Polymer Substrate Derived From Hydrocarbon Reactants Only Patents (Class 525/84)
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Patent number: 5780549Abstract: The impact resistance of PVC compounds has been shown to be improved by blending with a polybutene polymer. Enhanced thermal stability was also unexpectedly improved with the addition of the polybutene polymer.Type: GrantFiled: July 29, 1996Date of Patent: July 14, 1998Assignee: General Electric CompanyInventor: Paul Anthony Ludwig
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Patent number: 5741853Abstract: Thermoplastic moulding compositions of the ABS type ofI) at least one graft copolymer which is obtainable by emulsion polymerization of styrene and acrylonitrile in the weight ratio 90:10 to 50:50, wherein styrene and/or acrylonitrile can be completely or partly replaced by .alpha.-methylstyrene, methyl methacrylate or N-phenylmaleimide, in the presence of at least two butadiene polymer latices of types (A) and (B), which each contain, copolymerized, 0 to 50 wt. % of a further vinyl monomer, and wherein the weight ratio of monomers used to butadiene polymers used is 25:75 to 70:30, andII) at least one copolymer of styrene and acrylonitrile in the weight ratio 90:10 to 50:50, wherein styrene and/or acrylonitrile can be completely or partly replaced by .alpha.-methylstyrene, methyl methacrylate or N-phenylmaleimide, characterized in that the butadiene polymer latex (A) has a particle diameter d.sub.50 .ltoreq.320 nm, a width of the particle size distribution (measured as d.sub.90 -d.sub.Type: GrantFiled: May 22, 1996Date of Patent: April 21, 1998Assignee: Bayer AGInventors: Herbert Eichenauer, Ulrich Jansen, Karl-Erwin Piejko, Edgar Leitz
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Patent number: 5733975Abstract: A polyolefin resin composition which comprises:(A) a polyolefin,(B) 0.1 to 100 parts of a core-shell graft copolymer prepared by graft copolymerizing (b) 5 to 60 parts by weight of a monomer component comprising a copolymerizable vinyl compound selected so that the glass transition temperature of a polymer of said monomer component alone is not less than 25.degree. C., onto (a) 40 to 95 parts by weight of a crosslinked rubber-like polymer having a glass transition temperature of not more than 25.degree. C., and(C) 0 to 400 parts of an inorganic filler, said parts of (B) and (C) being parts by weight per 100 parts by weight of (A). The above-mentioned polyolefin resin composition shows the excellent processability, impact resistance, rigidity and surface property.Type: GrantFiled: March 31, 1997Date of Patent: March 31, 1998Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Taizo Aoyama, Kazuhiro Hara, Yoshihiko Okimura, Akinori Kitora Shu, Hiroki Kobayashi, Michinobu Izumi
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Patent number: 5719232Abstract: ABS type thermoplastic moulding compounds obtainable byA) producing a rubber latex with an average particle diameter d.sub.50 of 30 to 160 nm and a gel content of 75 to 100 wt. %B) emulsion polymerization of an amount of butadiene and optionally up to 50 wt. % (with reference to the total amount of monomer in stage B) of a comonomer in the presence of the rubber obtained in stage A, such that a rubber latex (B) with an average particle diameter d.sub.50 =220 to 330 nm and a gel content of 25 to 70 wt. % is produced,C) emulsion polymerization of 40 to 95 parts by wt. of a mixture of styrene and acrylonitrile, which optionally contains up to 50 wt. % (with reference to the total amount of monomers used in stage C) of one or more comonomers, in the presence of 5 to 60 parts by wt. (with reference to the solids) of the rubber obtained in stage B by introducing the monomer in such a way that 55 to 90 wt.Type: GrantFiled: April 19, 1995Date of Patent: February 17, 1998Assignee: Bayer AktiengesellschaftInventors: Adolf Schmidt, Herbert Eichenauer, Ulrich Jansen
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Patent number: 5684089Abstract: A pregellable adhesive containing several polymers, of which at least one is olefinically unsaturated and the other capable of curing by esterification, prepared in such a way that it cures by two different chemical reaction mechanisms which can be activated successively and catalyzed at least substantially independently of one another.Type: GrantFiled: December 13, 1996Date of Patent: November 4, 1997Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Thierry Lanoye, Anne-Marie Garnault
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Patent number: 5674940Abstract: Thermoplastic molding compounds of the ABS type ofA) at least one graft polymer obtainable by emulsion polymerization of styrene and acrylonitrile in a ratio by weight of 90:10 to 50:50, the styrene and/or acrylonitrile being completely or partly replaceable by .alpha.-methyl styrene, methyl methacrylate or N-phenyl maleic imide, in the presence of at least two butadiene polymer latices of type (A) and (B), of which each contains 0 to 50% by weight of another vinyl monomer in copolymerized form, the ratio by weight of the monomers used to the butadiene polymers used being 25:75 to 70:30, andB) at least one copolymer of styrene and acrylonitrile in a ratio by weight of 90:10 to 50:50, the styrene and/or acrylonitrile being completely or partly replaceable by .alpha.-methyl styrene, methyl methacrylate or N-phenyl maleic imide,characterized in that the butadiene polymer latex (A) has a particle diameter d.sub.50 of .ltoreq.250 nm, a width of the particle size distribution (measured as d.sub.90 -d.sub.Type: GrantFiled: June 7, 1996Date of Patent: October 7, 1997Assignee: Bayer AGInventors: Herbert Eichenauer, Ulrich Jansen, Karl-Erwin Piejko
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Patent number: 5674939Abstract: Moulding compounds the ABS type consisting of at least one resin matrix and a particulate graft-rubber polymer distributed therein and produced by emulsion polymerisation, wherein at least 70% of the graft-rubber particles (number) exhibit a structure of the rubber phase which can be detected by photographs taken with the aid of a transmission electron microscope and in which the individual particles contain irregular cellular inclusions of resin-forming polymer and the surface of the particles exhibits an irregularly jagged structure such that, for each particle illustrated, 5 to 30 of such jagged projections are present which differ from an idealised round particle (with a diameter d) by virtue of a diameter d+d/x with x=3 to 15, as well as a process for the manufacture of said moulding compounds.Type: GrantFiled: November 13, 1995Date of Patent: October 7, 1997Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Adolf Schmidt, Edgar Leitz, Karl-Erwin Piejko
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Patent number: 5658985Abstract: Thermoplastic molding composition, containing: A) 5-95 weight percent of a thermoplastic homo-, co-, or terpolymer of styrene, alpha-methylstyrene, ring-substituted styrene, methyl methacrylate, acrylonitrile, methacrylonitrile, maleic anhydride, N-substituted maleimide, vinyl acetate or mixtures thereof; B) 5-95 weight % of a graft polymer of B.1) 5-90 parts by weight of styrene, alpha-methylstyrene, ring-substituted styrene, methyl methacrylate, acrylonitrile, methacrylonitrile, maleic anhydride, N-substituted maleimide, vinyl acetate or mixtures thereof on B.2) 95-10 parts by weight of a rubber with a glass transition temperature .ltoreq. 10.degree. C; and C) 0.1-10 parts bye weight per 100 parts by weight of A+B of one or more EPM and/or EPDM rubbers.Type: GrantFiled: February 16, 1996Date of Patent: August 19, 1997Assignee: Bayer AGInventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
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Patent number: 5641833Abstract: A homogeneous polyolefinic blend and a preparation process thereof, are provided wherein the blend comprises polyolefin and a polymer which has a barrier property to organic liquid and vapor permeability. The barrier property is improved through the inclusion of mixed compatibilizing substances comprising an alkylcarboxyl-substituted polymer and reactive low molecular weight compounds. The compatibilizing substances are included by the means of ordinary processing equipment. The polymer with the barrier property having low organic liquid and vapor permeability is distributed as a multitude of thin, wide, disc-like layers in a polyolefin phase. The compatibilizing substances minimize the interfacial energy between the two polymers to adhere them together.Type: GrantFiled: January 11, 1995Date of Patent: June 24, 1997Assignee: Yukong Ltd.Inventors: Kwang Sik Jung, Moon Seok Lee, Yong Ho Kwon, Seong Jo Kim
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Patent number: 5635565Abstract: A rubber-modified thermoplastic resin is obtained by polymerizing (b) an aromatic vinyl compound and (c) a vinyl cyanide compound in the presence of (a) a rubbery polymer, and in which the content of the component (a) is 50 to 85% by weight, the content of the component (b) is 5 to 48% by weight and the content of the component (c) is 2 to 45% by weight, and which resin has a Q value of 30.times.10.sup.-4 to 50.times.10.sup.-3 and a grafting degree of 5% by weight or more. A thermoplastic resin composition comprising the above rubber-modified thermoplastic resin and at least one other thermoplastic resin is prepared.Type: GrantFiled: December 18, 1995Date of Patent: June 3, 1997Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Hajime Miyajima, Tsugio Asakawa, Noriaki Ijuin, Hiroo Nakamura, Toshihiro Ogawa, Shinichi Kimura
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Patent number: 5631323Abstract: Thermoplastic molding materials preparedA) from 35 to 99.5% by weight of a matrix copolymer (A) ofa.sub.1) from 50 to 95% by weight of styrene and/or .alpha.-methylstyrene,a.sub.2) from 5 to 50% by weight of acrylonitrile anda.sub.3) from 0 to 20% by weight of further comonomersB) from 0 to 50% by weight of a particulate graft copolymer (B) which is insoluble in (A), has a median particle diameter of from 0.03 to 1 .mu.m and preparedb.sub.1) from 30 to 80% by weight of a core comprising an elastomeric polymer having a glass transition temperature of less than -10.degree. C. andb.sub.2) from 20 to 70% by weight of a graft shell comprising a polymer which is compatible or partly compatible with (A)andC) from 0.5 to 30% by weight of a particulate crosslinked copolymer (C) which is insoluble in (A), has a median particle diameter of from 0.5 to 50 .mu.m and comprisesc.sub.1) from 50 to 89.95% by weight of styrene and/or .alpha.-methylstyrene,c.sub.2) from 10 to 50% by weight of acrylonitrile,c.sub.3) from 0.Type: GrantFiled: December 4, 1995Date of Patent: May 20, 1997Assignee: BASF AktiengesellschaftInventors: Norbert Guntherberg, Ekkehard Jahns, Wolfgang Fischer, Graham E. McKee, Bernhard Rosenau
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Patent number: 5605960Abstract: Polymers containing a high percentage of vinyl alcohol units are difficult to process into sheet, film, injection-molded objects, or fibers. Such melt-processing is greatly enhanced by admixing certain core/shell copolymers having either a rubbery, crosslinked core mainly formed from polymerization of butadiene and/or of an alkyl acrylate, or a non-cross-linked core derived mainly of units derived from an alkyl acrylate, and an outer shell mainly formed from polymerization of methyl methacrylate. Such copolymers do not require the presence of functional groups capable of reaction with the hydroxyl groups of the poly(vinyl alcohol) to impart the improved processing.Type: GrantFiled: February 26, 1996Date of Patent: February 25, 1997Assignee: Rohm and Haas CompanyInventors: Jean M. Brady, Thierry C. C. Diaz
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Patent number: 5605963Abstract: ABS polymer compositions consisting ofA) 5 to 80 parts by weight of at least one ABS polymer prepared by mass polymerization or solution polymerization, having rubber particles with an average particle diameter of from 800 to 15,000 nm and a rubber content of from 1 to 20% by weight,B) 1 to 50 parts by weight of at least one ABS polymer prepared by emulsion polymerization, having an average particle diameter of from 50 to 500 nm and a rubber content of from 20 to 80% by weight,C) 0 to 70 parts by weight of at least one thermoplastic vinyl resin prepared by radical polymerization of at least two monomer components selected from styrene, .alpha.-methylstyrene, methyl methacrylate, acrylonitrile, N-phenylmaleimide andD) 0.5 to 10 parts by weight of at least one polybutadiene prepared by emulsion polymerization, having an average particle diameter d.sub.50 in the latex form of from 80 to 500 nm and a gel content of from 10 to 95% by weight.Type: GrantFiled: February 6, 1995Date of Patent: February 25, 1997Assignee: Bayer AktiengesellschaftInventors: Edgar Leitz, Herbert Eichenauer, Karl-Erwin Piejko, Dieter Wittmann, Ekkehard Frohberg
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Patent number: 5576385Abstract: Thermoplastic molding materials containing a mixture of(A) from 15 to 70% by weight of a methacrylate polymer,(B) from 10 to 50% by weight of a copolymer obtained by polymerization of a mixture of(B1) a vinylaromatic monomer and(B2) a vinyl cyanide,(C) from 20 to 50% by weight of a graft copolymer of(C1) 50-80% by weight of a core of(C11) from 50 to 100% by weight of a 1,3-diene and(C12) from 0 to 50% by weight of a vinylaromatic monomer and(C2) 20-50% by weight of a graft shell of(C21) a C.sub.1 -C.sub.8 -alkyl ester of methacrylic or acrylic acid and(C22) a vinylaromatic monomer,with the proviso that the medium particle size (d.sub.50) of the graft copolymer is chosen in the range from 40 to 500 nm, and(D) from 0.5 to 15% by weight of a crosslinked methacrylate polymer.Type: GrantFiled: August 29, 1995Date of Patent: November 19, 1996Assignee: BASF AktiengesellschaftInventors: Kristin Tiefensee, Norbert G untherberg, Rainer Neumann, Ekkehard Jahns
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Patent number: 5574099Abstract: A rubber-reinforced styrene resin composition consisting essentially of:(1) 2-30% by weight of a grafted rubbery polymer wherein less than 30 parts by weight of a polymer of at least an aromatic alkenyl compound and an alkenyl cyanide compound are grafted onto 100 parts by weight of a conjugated diene rubber (I) having a weight average particle size of 0.26-0.6 .mu.m and a gel content of 30-80% by weight;(2) 5-40% by weight of a grafted rubbery polymer wherein 30 parts by weight or more of a polymer of at least an aromatic alkenyl compound and an alkenyl cyanide are grafted onto 100 parts by weight of a conjugated diene rubber (II) having a weight average particle size of 0.26-0.6 .mu.m and a gel content of 30-80% by weight; and(3) 40-93% by weight of a styrene copolymer of a monomer component consisting of at least one aromatic alkenyl compound and an alkenyl cyanide compound, and the difference between grafting degree of the component (1) and the grafting degree of component (2) being 15% by weight or more.Type: GrantFiled: January 20, 1995Date of Patent: November 12, 1996Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Masahiko Noro, Noriaki Ijuin, Akio Matsuda, Tateki Furuyama
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Patent number: 5571219Abstract: An aqueous composition comprises a natural rubber modified with a graft-polymerised methylmethacrylate polymer such as a graft-polymerised methlmethacrylate, an acrylic polymer, an acrylonitrile synthetic rubber and optionally, minor ingredients. The minor ingredients may be a quaternary ammonium surfactant and a polysiloxane. The composition is applied to an article such as of natural and/or synthetic rubber to effect coating. The process is especially suited to coating of medical gloves.Type: GrantFiled: December 6, 1994Date of Patent: November 5, 1996Assignee: Wembley Rubber Products (M) Sdn. Bhd.Inventor: Anthony D. T. Gorton
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Patent number: 5556917Abstract: A polymer alloy is provided which comprises:(I) from 10-50 parts by weight of an impact resistant styrene acrylate alloy which comprises (i) from 90 to 30 parts by weight of a brittle polymer (e.g. a styrene/alkyl (meth)acrylate copolymer, optionally with a (meth)acrylic acid comonomer), (ii) from 3 to 50 parts by weight of a rubbery polymer (e.g. a styrene/conjugated diolefin linear, tapered, radial di-block or tri-block copolymer), and (iii) from 15 to 67 parts by weight of a ductile polymer (e.g. a a styrene/conjugated diolefin linear, radial di-block or tri-block copolymer), and(II) from 90 to 50 parts by weight of an impact modified styrene polymer.The resulting polymer blends have good impact strength, tensile strength and gloss.Type: GrantFiled: October 8, 1993Date of Patent: September 17, 1996Assignee: Novacor Chemicals (International ) SAInventors: Michael B. Colella, Michael Castriotta
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Patent number: 5545689Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.Type: GrantFiled: May 1, 1995Date of Patent: August 13, 1996Assignee: Rohm and Haas CompanyInventors: Robert M. Amici, Edward E. LaFleur, William J. Work
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Patent number: 5543461Abstract: High impact polystyrene (HIPS) and other impact modified styrenic polymers such as ABS and MBS tend to suffer from environmental stress cracking. On extended exposure to oily or fatty substances the plastic tends to craze, then crack and finally break. Unfortunately, a number of applications for impact modified polymers is in areas where there is a high potential to contact with oily or fatty substances. The environmental stress crack resistance (ESCR) of impact modified styrenic polymers may be increased by increasing the particle size of the impact modifier and including a low molecular weight polybutene.Type: GrantFiled: March 9, 1994Date of Patent: August 6, 1996Assignee: Novacor Chemicals (International) SAInventors: Brenda C. Nke-Aka, Richard Delaney
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Patent number: 5516840Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.Type: GrantFiled: May 1, 1995Date of Patent: May 14, 1996Assignee: Rohm and Haas CompanyInventors: Robert M. Amici, Edward E. LaFleur, William J. Work
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Patent number: 5504153Abstract: Polymers containing a high percentage of vinyl alcohol units may be blended with copolymers of alkyl methacrylates and unsaturated organic acids and processed into sheet, film, fiber and other objects which exhibit an useful balance of barrier and strength properties.Type: GrantFiled: April 25, 1994Date of Patent: April 2, 1996Assignee: Rohm and Haas CompanyInventors: Robert M. Amici, Edward E. LaFleur, William J. Work
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Patent number: 5492966Abstract: Impact modified resin compositions are provided containing bi-lobed graft copolymers. The lobed graft copolymers contain a rigid lobe and a rubbery lobe. The rubber lobes exhibit an affinity for each other and tend to agglomerate during compounding resulting in large rubber particle sizes which provide the compositions with reduced gloss. The resin compositions are useful as molding resins.Type: GrantFiled: April 3, 1992Date of Patent: February 20, 1996Assignee: General Electric CompanyInventor: Kevin R. Kidder
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Patent number: 5491195Abstract: High impact polystyrene resins are provided having a surprisingly good combination of toughness and gloss characteristics. Such resins contain small (i.e., 0.1 to 0.4 micron) capsule morphology rubber particles in combination with relatively small (i.e., 0.25 to 1 micron) entanglement morphology rubber particles. It has been found that such resins are capable of providing Izod impact strength values in the range of 2.5 to 3.5 ft-lb/in (133.4 to 186.7 J/m) and higher at an overall volume average rubber size of less than 0.4 micron with corresponding gloss values in excess of 90 percent.Type: GrantFiled: December 21, 1994Date of Patent: February 13, 1996Assignee: The Dow Chemical CompanyInventors: David Schrader, Mark E. Soderquist, Mark D. Heires
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Patent number: 5475055Abstract: A thermoplastic molding material containing, based on the sum of its constituents A, B and C,A: 70 to 99% by weight of a thermoplastic resin A comprising, based on A,A1: 50 to 100% by weight of a hard matrix A1 comprising, based on A1,A11: 50 to 95% by weight of units of an aromatic vinyl compound or methyl methacrylate or their mixtures (A11) andA12: 5 to 50% by weight of units of acrylonitrile A12;A2: up to 50% by weight of a rubber-elastic particulate graft copolymer A2 comprising, based on A2,A21: 30 to 80% by weight of at least one elastomeric graft base A21 having a median particle size of from 30 to 1000 nm comprising, based on A21,A211: 50 to 100% by weight of units of a 1,3-diene or a C.sub.4 -C.sub.Type: GrantFiled: October 24, 1994Date of Patent: December 12, 1995Assignee: BASF AktiengesellschaftInventors: Andreas Deckers, Norbert Guentherberg, Rainer Bueschl, Ekkehard Jahns
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Patent number: 5468801Abstract: Dispersed polymers comprising microparticles stabilized with two kinds of steric stabilizers are disclosed. The first stabilizer is an essentially linear polymer having a terminal end attached to the microparticle. The second stabilizer is a graft or comb polymer comprising an acrylic backbone having side chains. This stabilizer, in contrast to the first stabilizer may be attached to the core by means of a plurality of functional groups placed along the backbone of the graft polymer.Type: GrantFiled: September 22, 1994Date of Patent: November 21, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Joseph A. Antonelli, Christopher Scopazzi
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Patent number: 5466750Abstract: A nonflammable injection-molding resin composition. The composition includes a nonflammable resin component containing a low-molecular-weight styrene resin having a high .alpha.-methylstyrene content; a rubbery polymer having grafted thereon a vinyl cyanide and/or alkyl (meth)acrylate monomer and an aromatic vinyl monomer; a low-molecular weight post-chlorinated polyvinyl chloride resin and, optionally, a vinyl chloride resin; and, as a moldability-improving agent, a specific alkyl acrylate resin comprising a vinyl cyanide monomer, an alkyl acrylate monomer and an optional copolymerizable vinyl monomer. The nonflammable resin composition provides injection-molded articles with a good balance of impact strength and non-peeling properly and is excellent in moldability.Type: GrantFiled: March 25, 1994Date of Patent: November 14, 1995Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Ikuhiro Mishima, Munehiro Ikeda, Hideki Hosoi
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Patent number: 5457157Abstract: Molding materials contain from 5 to 50% by weight of a first polymer obtained by polymerizing a C.sub.1 -C.sub.20 -alkyl ester of methacrylic or acrylic acid;from 5 to 50% by weight of a second polymer obtained by polymerizing a monomer mixture offrom 75 to 82% by weight of a vinyl aromatic monomer and from 18 to 25% by weight of acrylonitrile or methacrylonitrile;from 10 to 40% by weight of a third polymer containing from 10 to 90% by weight of units of the general formula I ##STR1## where R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sup.2 is C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.12 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryl-C.sub.1 -C.sub.4 -alkyl, andfrom 10 to 90% by weight of a C.sub.1 -C.sub.20 -alkyl ester of methacrylic or acrylic acid;from 5 to 60% by weight of a graft copolymer having a mean particle diameter (weight average) of less than 200 nm and obtained by polymerizing from 20 to 70% by weight of a monomer mixture offrom 30 to 100% by weight of a C.sub.1 -C.sub.Type: GrantFiled: December 28, 1993Date of Patent: October 10, 1995Assignee: BASF AktiengesellschaftInventors: Andreas Deckers, Norbert Guentherberg, Kristin Tiefensee
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Patent number: 5451636Abstract: A blend and a process for producing that blend in which a high ethylene content ethylene-propylene polymer and a lower ethylene content ethylene-propylene polymer are subjected to simultaneous blending and shearing to reduce their molecular weights and molecular weight distribution and to yield a product that can be recovered as a solid using conventional plastic processing equipment. The sheared blend of polymers can function as a shear stable viscosity index improver with improved lower temperature properties.Type: GrantFiled: November 9, 1994Date of Patent: September 19, 1995Assignee: DSM Copolymer, Inc.Inventors: Errol J. Olivier, Robert T. Patterson, Peter N. Nugara
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Patent number: 5442012Abstract: Core/shell additives, useful in modifying the processing and/or physical properties of poly(vinyl chloride) and other thermoplastic matrix polymers, are prepared separately at small particle sizes by emulsion polymerization, co-agglomerated, further encapsulated by a final shell, and isolated by spray-drying or coagulation. The isolated powders are readily re-dispersed to their original particle sizes in the matrix polymer.Type: GrantFiled: October 26, 1993Date of Patent: August 15, 1995Assignee: Rohm and Haas CompanyInventors: James S. Kempner, Hsing-Yeh Parker, Janis C. Stevenson, Morris C. Wills, Judith L. Allison
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Patent number: 5434218Abstract: Rubber-modified, impact-resistant molding materials contain, based on the sum of A, B1 and B2,A: from 70 to 98% by weight of a polymer matrix A formed by free radical polymerization of a mixture of from 60 to 90% by weight of styrene and from 10 to 40% by weight of acrylonitrile,B1: from 1 to 29% by weight of a particulate, first graft copolymer B1 which is distributed in the matrix A and consists of a grafting base of polybutadiene and grafts of a copolymer of styrene and acrylonitrile having a mean particle size of about 100-500 nm, andB2: from 1 to 29% by weight of a particulate, second graft copolymer B2 distributed in the matrix A and consisting of a grafting base of polybutadiene and grafts of a copolymer of styrene and acrylonitrile having a mean particle size of from 600 to 10,000 nm, as obtained if both graft copolymers have been prepared by solution and/or mass polymerization and have been incorporated in the polymer matrix in a conventional manner.Type: GrantFiled: April 11, 1994Date of Patent: July 18, 1995Assignee: BASF AktiengesellschaftInventors: Ehrenfried Baumgartner, Juergen Hofmann, Rudolf H. Jung, Rainer Moors, Hansjoerg Schaech
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Patent number: 5434219Abstract: A thermoplastic resin composition comprising: (I) a rubber-modified thermoplastic resin, and (II) a transparent thermoplastic resin, a thermoplastic elastomer or combination thereof, provided that said resin (I) is excluded from component (II), wherein the rubber-modified thermoplastic resin (I) is a resin prepared by polymerizing (B) 30-100% by weight of at least one member selected from the group consisting of an aromatic alkenyl compound monomer and an alkyl (meth)acrylate monomer and (C) 70-0% by weight of at least one other monomeric compound copolymerizable therewith, in the presence of 5-45% by weight of (A) a hydrogenated diene copolymer of component (I) obtained by hydrogenating a diene copolymer comprising a random copolymer of 50% by weight or more of at least one conjugated diene and 50% by weight or less of an alkenyl aromatic compound until at least 70% by weight of the olefinic unsaturation of the diene copolymer is hydrogenated.Type: GrantFiled: February 9, 1994Date of Patent: July 18, 1995Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Katsuro Oomura, Tateki Furuyama, Kazuhiko Yamamoto, Toshihiro Shimamura, Yoshinobu Suzuki
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Patent number: 5427851Abstract: A pressure sensitive adhesive composition is provided for use on cellulosic substrates which will not become tacky under high temperatures, lose adhesive properties due to contact with silicone oils, "block" when stacked prior to printing, or lose bond-forming ability with age. Non-thermoplastic pigment particles and a compound selected from the group consisting of a natural rubber latex, a graft copolymer of natural rubber and acrylic monomer and a blend of the natural rubber latex and the graft copolymer are mixed together to form an adhesive with a glass transition temperature in the range of -10.degree. to -78.degree. C., a dielectric constant of about 2.25 to 2.62 and a green strength of 0.05 to 0.75 p.s.i. The adhesive may also optionally contain a chloroprene-methacrylic acid copolymer latex and a vinyl-methacrylic acid copolymer latex.Type: GrantFiled: February 16, 1994Date of Patent: June 27, 1995Assignee: The Standard Register CompanyInventor: Rajendra Mehta
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Patent number: 5391585Abstract: Foamable thermoplastic resin compositions are provided having vinyl chloride polymer, a graft copolymer having a superstrate grafted to a substrate wherein the superstrate has alphamethyl styrene, unsaturated nitrile, and unsubstituted styrene therein, and the substrate is a butadiene rubber, a rubber-free copolymer having alkylmethacrylate, vinyl aromatic, and unsaturated nitrile therein, and a chemical blowing agent. The foamable thermoplastic resin composition may be coextruded with a non-foamed thermoplastic resin skin to produce a coextruded rigid foamed structure by a process of coextruding the skin and foamable thermoplastic composition. The composition and process are useful for making coextruded rigid foam structures which are useful in rigid foam applications such as foamed pipe and foamed sheet.Type: GrantFiled: April 14, 1994Date of Patent: February 21, 1995Assignee: General Electric CompanyInventor: Martin Grohman
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Patent number: 5391617Abstract: A blend and a process for producing that blend in which a high ethylene content ethylene-propylene polymer and a lower ethylene content ethylene-propylene polymer are subjected to simultaneous blending and shearing to reduce their molecular weights and molecular weight distribution and to yield a product that can be recovered as a solid using conventional plastic processing equipment. The sheared blend of polymers can function as a shear stable viscosity index improver with improved lower temperature properties.Type: GrantFiled: August 2, 1993Date of Patent: February 21, 1995Assignee: DSM Copolymer, Inc.Inventors: Errol J. Olivier, Robert T. Patterson, Peter N. Nugara
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Patent number: 5382625Abstract: Particulate graft polymers composed of a core (a) of cross-linked diene rubber, a first envelope (b) of a cross-linked acrylate rubber, a second envelope (c) of a copolymer of resin-forming monomers and polyallyl monomers having at least three allyl groups in the molecule, and a third envelope (d) of a copolymer or homopolymer of resin forming monomers.Type: GrantFiled: December 12, 1985Date of Patent: January 17, 1995Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Walter Uerdingen, Karl-Heinz Ott, hans-Eberhard Braese
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Patent number: 5373060Abstract: A particulate graft polymer A ofA1: a grafting base based on a polydiene rubber A1 of, based on A1,A11: 70 to 100% by weight of a polymerizable diene, andA12: up to 30% by weight of a copolymerizable, ethylenically unsaturated monomer having a first graft sheath A2 of, based on A2,A21: 75 to 99.8% of at least one C.sub.1 -C.sub.8 alkyl acrylate A21,A22: 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A22,A23: 0.1 to 20% by weight of at least one monomer A23 containing one or more acidic or basic groups, and a second graft sheath A3 comprising, based on A3,A31: 40 to 89.9% by weight of at least one aromatic vinyl monomer A31,A32: 10 to 49.9% by weight of at least one polar, ethylenically unsaturated monomer A32,A33: 0.1 to 20% by weight of at least one monomer A33 containing one or more basic or acidic groups, andA34: up to 5% by weight of at least one polyfunctional, crosslinking monomer A34,A23 and A33 in each case being different groups.Type: GrantFiled: July 6, 1993Date of Patent: December 13, 1994Assignee: BASF AktiengesellschaftInventors: Norbert Guentherberg, Wolfgang Fischer, Norbert Niessner
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Patent number: 5362795Abstract: Rubber-containing graft copolymer particles having excellent powder properties are prepared by mixing, with 100 parts by weight (as solid content) of a slurry of a rubber-containing graft copolymer (A), 0.1 to 10 parts by weight (as solid content) of a rigid non-elastic polymer (B) having a glass transition temperature of 40.degree. C. or higher and a weight-average molecular weight of 10,000 to 500,000 in a substantially slurry state.Type: GrantFiled: March 16, 1993Date of Patent: November 8, 1994Assignee: Mitsubishi Rayon Company, Ltd.Inventors: Koji Matsumoto, Masaru Morimoto, Susumu Hirano
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Patent number: 5352739Abstract: This invention relates to a compatibilized rubber composition and a process for compatibilizing polar/nonpolar rubber blends comprising blending compatiblizers such as ethylene/vinyl acetate copolymer, ethylene/methacrylate copolymer EPDM or EP rubber grafted with a polar monomer such as methyl methacrylate.Type: GrantFiled: November 6, 1992Date of Patent: October 4, 1994Assignee: Exxon Chemical Patents Inc.Inventor: Palanisamy Arjunan
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Patent number: 5349017Abstract: A polyvinyl chloride resin composition comprising (i) 100 parts by weight of a polyvinyl chloride resin and (ii) 2 to 40 parts by weight of a multi-stage copolymer obtained by polymerizing resin component formable monomers in the range of from more than 30 parts by weight to 50 parts by weight in three stages onto 50-70 parts by weight of a butadiene elastomer having a glass transition temperature ranging from -40.degree. C. to 5.degree. C. obtained by a copolymerization of a monomer mixture of 70 to 90% by weight of butadiene, 10 to 30 percent by weight of an aromatic vinyl monomer and a polyfunctional monomer added in an amount corresponding to 3 to 10 parts by weight per 100 parts by weight of the total amount of the butadiene and aromatic vinyl monomer.Type: GrantFiled: December 1, 1992Date of Patent: September 20, 1994Assignee: Mitsubishi Rayon Company Ltd.Inventors: Koji Matsumoto, Masaru Morimoto, Masahiro Osuka, Naomi Uno
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Patent number: 5346953Abstract: Core-shell ABS copolymers having an SAN shell completely surrounding the diene core are provided by melt blending an aliphatic diene polymer with an SAN copolymer, said copolymer containing functional groups capable of reacting with the diene polymer. For example, the SAN copolymer may contain azide groups capable of reacting with the olefinic groups in the diene polymer, or both the SAN copolymer and the diene polymer may contain other functional groups capable of interreaction, such as acidic (e.g., maleic anhydride) groups in the diene and epoxy (e.g., glycidyl methacrylate) groups in the SAN copolymer.Type: GrantFiled: October 7, 1993Date of Patent: September 13, 1994Assignee: General Electric CompanyInventors: James J. Scobbo, Jr., Gregory J. Stoddard
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Patent number: 5344878Abstract: There is a demand for very clear tough polymers or polymer blends, particularly in the packaging industry. Crystal polystyrene is clear but lacks toughness. HIPS is tough but lacks the required clarity. Blends of styrene-ester polymers with a very small amount of HIPS do provide a very clear tough polymer alloy.Type: GrantFiled: March 3, 1993Date of Patent: September 6, 1994Assignee: Novacor Chemicals (International) S.A.Inventors: Michael Colella, Brian Marcoulier
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Patent number: 5338804Abstract: Disclosed is a methacrylic resin cast plate which is comprised of 100 parts by weight of [I] polymethyl methacrylate or a methyl methacrylate copolymer containing at least 90% by weight of methyl methacrylate units and, dispersed therein, a graft copolymer [IV] obtained by graft-polymerizing a hard resin component [III] containing at least 90% by weight of methyl methacrylate units onto a crosslinked rubbery copolymer [II] containing at least 45% by weight of butyl acrylate units and having an average particle diameter of 0.1 to 1 .mu.m, the amount of the graft copolymer [IV] being 2 to 30 parts by weight as the amount of the crosslinked rubbery copolymer.The methacrylic resin cast plate has a high transparency and impact resistance.Type: GrantFiled: July 17, 1992Date of Patent: August 16, 1994Assignee: Mitsubishi Rayon Company, Inc.Inventors: Akihiro Toritani, Suehiro Tayama, Yasunori Kawachi
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Patent number: 5334660Abstract: A vinyl chloride resin composition having an improved impact resistance with a good transparency that the vinyl chloride resin itself possesses originally; which comprises (A) a graft copolymer prepared by (i) adding a water-soluble electrolyte to a butadiene polymer (a) (ii) adding a monomer mixture (b) containing mainly an aromatic vinyl monomer to polymerize, (iii) adding a monomer mixture (c) containing mainly an alkyl methacrylate to polymerize and (iv), when desired, adding a monomer mixture (d) containing mainly an aromatic vinyl monomer.Type: GrantFiled: April 13, 1992Date of Patent: August 2, 1994Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Akira Takaki, Hiroto Mori, Toshihiko Hasegawa
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Patent number: 5302665Abstract: A thermoplastic resin composition contains from 5 to 98 parts by weight of a styrene resin (A) and/or a vinyl chloride resin (B) and from 95 to 2 parts by weight of a modificed olefin polymer (C) having, per from 2 to 1,000 olefin-derived repeating units, one structural unit containing at least one amido group (a) and at least one reactive group (b) selected from glycidyloxy group and glycidyl group. The composition can be used for producing shaped articles required to have high strength such as interior automotive parts, housings for office appliances, various machine parts, and electrical or electronic parts.Type: GrantFiled: July 9, 1992Date of Patent: April 12, 1994Assignee: Kanegafuchi Kagaku Kabushiki KaishaInventors: Ikuhiro Mishima, Yoshihiko Hashimoto, Kazuhiko Tamai, Hisataka Hayashi
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Patent number: 5292786Abstract: Flame retardant polymer blend compositions exhibiting increased weld line strength comprise a polycarbonate polymer, an ABS resin, a phosphate flame retardant compound and a polyalkylmethacrylate. Preferred polyalkylmethacrylates comprise polymethylmethacrylate homopolymer and copolymers thereof with at least one C.sub.l -C.sub.4 alkyl acrylate.Type: GrantFiled: June 22, 1990Date of Patent: March 8, 1994Assignee: General Electric CompanyInventors: Satish K. Gaggar, James J. Ziegelmeyer
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Patent number: 5286792Abstract: Acrylonitrile-butadiene-styrene-ester compositions having a unique rubber phase morphology are prepared by a continuous mass polymerization process. The compositions have an improved balance between impact and tensile strengths and gloss.Type: GrantFiled: September 4, 1990Date of Patent: February 15, 1994Assignee: Monsanto CompanyInventors: Wan C. Wu, Vincent A. Aliberti
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Patent number: 5284694Abstract: An embossable sheet, having at least one stress-whitening layer comprising a blend of:a) at least one heat-stable polymer selected from the group consisting of polypropylene and a polymethyl alkene, said alkene having from about 3 to about 7 carbon atoms,b) at least one other polymeric material immiscible therewith, andc) an effective amount of an antioxidant, said sheet exhibiting stress-whitening which is stable at 136.degree. C. for at least about 7 days.Type: GrantFiled: August 25, 1992Date of Patent: February 8, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Rochelle L. Lockridge, Dennis L. Krueger, Philip G. Martin, Gary W. Schlaeger
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Patent number: 5283287Abstract: The present invention provides a process for preparing thermoplastic resin compositions having excellent HCFC resistance which comprises:a first step wherein 50 to 90 parts by weight of a monomer mixture of 50 to 80% by weight of a vinyl cyanide, 20 to 50% by weight of an aromatic vinyl compound and 5% by weight or less of an unsaturated carboxylic acid or esters thereof or a vinyl acetate are graft-polymerized in the presence of 10 to 50 parts by weight of a rubber latex and also in the presence of 0.001 to 2.0 parts by weight of a polymerization inhibitor to prepare a graft polymer(A);a second step wherein 100 parts by weight of a monomer mixture of 50 to 80% by weight of a vinyl cyanide, 20 to 50% by weight of an aromatic vinyl compound and 5% by weight or less of an unsaturated carboxylic acid or esters thereof are polymerized, while adding 2.Type: GrantFiled: December 16, 1992Date of Patent: February 1, 1994Assignee: Lucky LimitedInventors: Young M. Kim, Chan H. Lee, Jeong S. Yu
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Patent number: 5283286Abstract: A thermoplastic resin composition is prepared by blending 50-95 wt. % of a copolymer (A) of 10-75 wt. % of .alpha.-methyl styrene, 10-60 wt. % of methyl methacrylate, 5-35 wt. % of acrylonitrile and 0-20 wt. % of a monomer copolymerizable therewith; and 5-50 wt. % of a graft copolymer (B) comprising 50-85 wt. parts of a butadiene-based rubber polymer and 15-50 wt. parts of a vinyl monomer graft-polymerized onto the rubber polymer. The butadiene-based rubber polymer includes 50-98 wt. % of butadiene, 2-50 wt. % of an aromatic polycyclic vinyl monomer represented by a formula (I) below and 0-20 wt. % of a monomer copolymerizable therewith: ##STR1## wherein R denotes an optionally substituted biphenylyl or naphthyl group, and R.sub.1 denotes a hydrogen atom or a methyl group.Type: GrantFiled: May 8, 1992Date of Patent: February 1, 1994Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Yosuke Takahashi, Yasumasa Komatsu, Hiroshi Hagiwara, Takayuki Katto
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Patent number: 5281665Abstract: A thermoplastic resin composition is here provided which comprising99 to 50% by weight of at least one of engineering plastics (A) and1 to 50% by weight of an ethylene copolymer (B) having at least one of carbon-carbon unsaturated double bonds, and1 to 200 parts by weight, based on 100 parts by weight of the resin (A)+(B), of at least one selected from the group consisting of a rubber-like elastomer (C) and/or an olefin polymer or copolymer (D).Type: GrantFiled: July 29, 1991Date of Patent: January 25, 1994Assignee: Nippon Petrochemicals Co., Ltd.Inventors: Hirofumi Fukui, Katsufumi Suga