Mixture Contains Solid Polymer Derived From Reactant Containing A Fused- Or Bridged-ring System Patents (Class 525/97)
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Patent number: 4698389Abstract: A process for the production of a nonaqueous stable emulsion feedstock comprising a rubber, a block copolymer having at least one component miscible with the rubber and at least one component miscible with the monomer, and at least two unsaturated organic monomers capable of free radical polymerization is disclosed. At least one of the monomers must be miscible with the rubber and the mixture of the monomers is substantially a nonsolvent for the rubber. The block copolymer maintains the rubber or rubber-rich particles in emulsified form within the mixture of monomers. In general, the process comprises (1) mixing the rubber, block copolymer and at least a portion of the rubber miscible monomers to form a first nonaqueous solution, (2) mixing the remaining monomers and the remaining portion of the rubber miscible monomers to form a second solution, and (3) combining the two solutions to form the nonaqueous stable emulsion feedstock.Type: GrantFiled: June 6, 1985Date of Patent: October 6, 1987Assignee: The Standard Oil CompanyInventors: Wen B. Shyu, David A. Woodhead, Vincent P. Quigley
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Patent number: 4661549Abstract: Graft polymers are prepared by reacting an ethylenically unsaturated polymerizable monomer with a polymer of an olefin of 2 to about 8 carbon atoms in a process wherein the olefin polymer is substantially insoluble in the monomer but is capable of absorbing the monomer. In a preferred aspect, a vinyl halide polyolefin graft polymer is produced by reacting a solid polyolefin particle with a vinyl halide monomer in which the polyolefin is substantially insoluble, but is capable of absorbing the monomer. The solid particles can be contacted with the monomer in one step or in stages. When the stage-wise reaction is continued until the proportion of polyolefin in the polymer product is about 2 to about 20 weight percent, the resulting product can be formed to a transparent or translucent article.Type: GrantFiled: October 12, 1983Date of Patent: April 28, 1987Assignee: Occidental Chemical CorporationInventor: Leigh E. Walker
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Patent number: 4609697Abstract: There is provided a hot melt adhesive for bonding shaped articles and surface structures of ethylene-propylene terpolymer (EPDM) between one another, or with other materials, consisting 100 parts by weight of styrene-ethylene-butylene-styrene block copolymer rubber; 10-150 parts by weight phr (per hundred rubber) aliphatic hydrocarbon resins; 50-300 parts by weight phr (per hundred rubber) aromatic hydrocarbon resins; and up to 1,000 parts by weight phr (per hundred rubber) bitumin with a softening point, according to the Ring and Ball method (DIN test 52011), 37/44-54/59.Type: GrantFiled: August 16, 1984Date of Patent: September 2, 1986Assignee: Phoenix AktiengesellschaftInventor: Gunter Albers
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Patent number: 4588775Abstract: Blends of sequentially polymerized ethylene-propylene copolymers, high density ethylene homopolymers, EPM or EPDM rubber and linear low density polyethylene possess extremely good impact resistance.Type: GrantFiled: June 22, 1984Date of Patent: May 13, 1986Assignee: Shell Oil CompanyInventor: J. Douglas McCullough, Jr.
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Patent number: 4578420Abstract: An eraser composition composed of conventional fillers and additives wherein the binder is a styrene-butadiene-styrene block polymer having a butadiene portion of 10 to 40%. The eraser composition can be easily extruded using simple commercial machines presently available and thus is inexpensive to manufacture. Furthermore, the use of this particular material as a binder produces a superior eraser composition.Type: GrantFiled: February 10, 1981Date of Patent: March 25, 1986Assignee: J. S. StaedtlerInventor: Werner Handl
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Patent number: 4552921Abstract: A process for the production of a nonaqueous stable emulsion feedstock comprising a rubber, a block copolymer having at least one component miscible with the rubber and at least one component miscible with the monomer, and at least two unsaturated organic monomers capable of free radical polymerization is disclosed. At least one of the monomers must be miscible with the rubber and the mixture of the monomers is substantially a nonsolvent for the rubber. The block copolymer maintains the rubber or rubber-rich particles in emulsified form within the mixture of monomers. In general, the process comprises (1) mixing the rubber, block copolymer and at least a portion of the rubber miscible monomers to form a first nonaqueous solution, (2) mixing the remaining monomers and the remaining portion of the rubber miscible monomers to form a second solution, and (3) combining the two solutions to form the nonaqueous stable emulsion feedstock.Type: GrantFiled: February 25, 1985Date of Patent: November 12, 1985Assignee: The Standard Oil CompanyInventors: Wen B. Shyu, David A. Woodhead, Vincent P. Quigley
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Patent number: 4543099Abstract: A purpose of the disclosed method is to impart gathers and elasticity to a relatively inelastic film, membrane, or web substrate, through elastic banding with a viscoelastic hot melt pressure-sensitive adhesive (PSA). Typically, the resulting elastic-banded substrate product (e.g. 40) will be cut into discrete units and formed in to garments or body-encircling members such as disposable diapers. One step of the preferred method involves extruding a ribbon or band (13 or 113) comprising a viscoelastic hot melt PSA, which PSA has unusually high cohesion, stretchiness, and elasticity without excessive loss of adhesive bonding strength. (The viscoelastic behavior of the PSA is believed to be determined, at least in part, by the relative size of its crystalline domains and its rubbery domains and the glass transition temperatures and softening point of its components.Type: GrantFiled: July 19, 1982Date of Patent: September 24, 1985Assignee: H. B. Fuller CompanyInventors: William L. Bunnelle, Richard C. Lindmark, Jr.
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Patent number: 4533700Abstract: A hydrocarbon resin consisting essentially of a copolymer of (A) an unsaturated chain hydrocarbon or a cyclic hydrocarbon having a vinylidene group and (B) 9,10-dihydrodicyclopentadiene or its derivative, or a hydrocarbon resin modified by addition reacting an ethylenically unsaturated carboxylic acid or its anhydride, or hydrogen, to the above-mentioned copolymer. The hydrocarbon resin and the modified hydrocarbon resin have a high softening point and a low melt viscosity, and are suitable for use in adhesives and traffic paints.Type: GrantFiled: January 19, 1984Date of Patent: August 6, 1985Assignee: Mitsui Petrochemical Industries Ltd.Inventors: Kinya Mizui, Masami Takeda, Tadao Iwata
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Patent number: 4526927Abstract: A thermoplastic molding material contains a styrene polymer, a polyphenylene ether and, as a component for improving the impact strength, a block copolymer obtained by reacting an ethylene copolymer with an active polymeric anion.Type: GrantFiled: June 30, 1983Date of Patent: July 2, 1985Assignee: BASF AktiengesellschaftInventors: Juergen Hambrecht, Franz Brandstetter, Walter Ziegler, Wolfgang F. Muller, Klaus Bronstert, Adolf Echte
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Patent number: 4504627Abstract: Polymer alloys containing copolymers of methylmethacrylate/N-phenylmaleimide are disclosed. In one embodiment the polymer alloy is an alloy of methylmethacrylate/N-phenylmaleimide and styrene/acrylonitrile. In another embodiment, the polymer alloy is an alloy of methylmethacrylate/N-phenylmaleimide and stryene/acrylonitrile/N-phenylmaleimide.Type: GrantFiled: September 12, 1983Date of Patent: March 12, 1985Assignee: Atlantic Richfield CompanyInventor: Barry D. Dean
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Patent number: 4493923Abstract: Blends of sequentially polymerized ethylene-propylene copolymers, high density ethylene homopolymers, EPM or EPDM rubber and linear low density polyethylene subjected to peroxide-contacting possess extremely good impact resistance along with high melt flows without excessive loss of stiffness.Type: GrantFiled: March 27, 1984Date of Patent: January 15, 1985Assignee: Shell Oil CompanyInventor: J. Douglas McCullough, Jr.
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Patent number: 4469847Abstract: A process for preparing graft styrene copolymers is effected by a two-stage polymerization of styrene in the presence of an EPDM elastomer and styrene block copolymer. The resultant graft styrene copolymer has a fine microstructure, good impact resistance and good resistance to aging.Type: GrantFiled: February 9, 1983Date of Patent: September 4, 1984Assignee: Societe Chimiques des CharbonnagesInventor: Robert Roussel
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Patent number: 4463133Abstract: A rubber composition suitable for use in tire tread is disclosed, which contains at least 20 parts by weight of a block copolymer per 100 parts by weight of total rubber content. This block copolymer comprises (A) a polymer segment obtained by starting from conjugated diolefin and monovinyl aromatic hydrocarbon and having a content of monovinyl aromatic hydrocarbon bond of not more than 10% by weight and (B) a copolymer segment obtained by copolymerization of conjugated diolefin and monovinyl aromatic hydrocarbon and having a content of monovinyl aromatic hydrocarbon bond of 15-50% by weight.Type: GrantFiled: June 2, 1982Date of Patent: July 31, 1984Assignees: Bridgestone Tire Company Limited, Japan Synthetic Rubber Co., Ltd.Inventors: Yasumasa Takeuchi, Mitsuhiko Sakakibara, Fumio Tsutsumi, Akio Takashima, Tatsuo Fujimaki, Shinsuke Yamaguchi, Seisuke Tomita
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Patent number: 4444953Abstract: A novel block copolymer having particular utility in adhesive compositions has the structure (A-B).sub.x Y(C).sub.z where A is a poly(monoalkenyl) block, B and C are poly(conjugated diene) polymer blocks, Y is the residue of a multifunctional coupling agent, and x plus z is greater than 6. Also disclosed are adhesive compositions containing such block copolymers.Type: GrantFiled: April 18, 1983Date of Patent: April 24, 1984Assignee: Shell Oil CompanyInventor: David J. St. Clair
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Patent number: 4444952Abstract: A thermoplastic molding composition containing a non-equimolar copolymer containing less than 50 mole percent of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic acid or its anhydride and more than 50 mole percent of a monovinyl-substituted hydrocarbon monomer and an impact modifying substance consisting of a styrene/butadiene star block thermoplastic elastomer, is disclosed.Type: GrantFiled: August 23, 1982Date of Patent: April 24, 1984Assignee: Atlantic Richfield CompanyInventors: Stewart Feinberg, Harold Nicholson
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Patent number: 4418178Abstract: Impact modified polycycloolefin is made by ring opening bulk polymerization of at least one monomer containing at least one norbornene group in presence of an organoammonium molybdate or tungstate catalyst and an alkoxyalkylaluminum halide cocatalyst as well as a sufficient amount of a polyolefin powder and a rubbery material to produce ductile polycycloolefin.Type: GrantFiled: September 29, 1982Date of Patent: November 29, 1983Assignee: The B. F. Goodrich CompanyInventor: Elmer J. DeWitt
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Patent number: 4376179Abstract: This invention relates to hot melt adhesive compositions which include a highly unsaturated hydrocarbon rubber, about 5 to about 100 parts by weight of a neutralized sulfonated elastomeric polymer per 100 parts by weight of the highly unsaturated hydrocarbon rubber, wherein the neutralized sulfonated elastomeric polymer has about 5 to about 50 meq. of neutralized sulfonate groups per 100 grams of the neutralized sulfonated elastomeric polymer, and about 25 to about 200 parts by weight of a hydrocarbon resin of a petroleum or coal tar distillate, aliphatic dienes and mono- and di-olefins, cyclic olefins of 5 or 6 carbon atoms and hydrogenated polycyclics per 100 parts by weight of the highly unsaturated hydrocarbon rubber.Type: GrantFiled: October 14, 1980Date of Patent: March 8, 1983Assignee: Exxon Research and Engineering Co.Inventors: Pawan K. Agarwal, Robert D. Lundberg
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Patent number: 4371663Abstract: Several important features and characteristics, particularly and pronouncedly environmental stress crack resistance (i.e., "ESCR") as well as other desirable physical properties of blends or intimate admixtures, known as "polyblends" and usually made by melt-blending, of various styrene polymers (i.e., "SP's"), notably homopolystyrene (i.e., "PS"), and thermoplastic elastomers (i.e., "TE's") are significantly and in emphasized measure enhanced by thorough incorporation in (and simultaneous or subsequent heat action-initiating and crosslink-effecting of) the SP/TE polyblend in low level concentration(s) of a thermally-activatable, organic peroxide in combination with any one (or even a mixture) of an optimizing cross-linking supplement provided in effectively reactive amounts of, for illustration, either a styrene (or the like alkenyl aromatic) monomer or a reagent that is reactive towards alkenes (such as certain dithiols, amino-derivatives, etc.Type: GrantFiled: November 30, 1979Date of Patent: February 1, 1983Assignee: The Dow Chemical CompanyInventor: Robert J. Russell
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Patent number: 4359492Abstract: Thermoplastic elastomers useful in formulating certain pressure-sensitive hot-melt adhesives are normally very tacky and thus are hard to handle. The present invention relates to a method of eliminating problems due to this tackiness by dusting the elastomer pellets with a friable polymer resin having a ring and ball softening point of at least 95.degree. C. Selection of a polymer resin which is normally used in adhesive formulations allows one to overcome tackiness without having detrimental effects on the ultimate adhesive properties of formulations based on the elastomer.Type: GrantFiled: March 13, 1981Date of Patent: November 16, 1982Assignee: Atlantic Richfield CompanyInventor: James A. Schlademan
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Patent number: 4350787Abstract: An eraser composed of conventional fillers and additives and, in addition, a binder of a styrene-isoprene-styrene block copolymer. The eraser composition does not require any aftertreatment, e.g., vulcanization, and can be fabricated into erasers utilizing single equipment.Type: GrantFiled: February 10, 1981Date of Patent: September 21, 1982Assignee: J. S. StaedtlerInventor: Gunter Kimpel
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Patent number: 4346195Abstract: Thermoplastic compositions comprising, in intimate admixture, polyethylene terephthalate and a rubber-modified graft copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride. These compositions display desirable thermal properties, particularly elevated heat deflection temperatures.Type: GrantFiled: September 14, 1981Date of Patent: August 24, 1982Assignee: Ethyl CorporationInventors: Edwin D. Hornbaker, Jesse D. Jones
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Patent number: 4325770Abstract: A process for making a pressure-sensitive adhesive coated product from an elastomer utilizing dry blending of powders and dry coating steps is described. Compositions suitable for use in this process are also described.Type: GrantFiled: June 27, 1980Date of Patent: April 20, 1982Assignee: PermacelInventor: Ralf Korpman
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Patent number: 4313867Abstract: This invention relates to injection moldable type elastomeric compositions having improved physical and rheological properties. The compositions used for elastomeric articles include a styrene-ethylene/butylene-styrene block copolymer or compounds thereof, a neutralized sulfonated EPDM terpolymer and a non-polar process oil; and optionally a polypropylene thermoplastic resin.These blend compositions can be readily processed due to their superior rheological properties on conventional plastic fabrication equipment, especially on low pressure injection molding equipment into elastomeric articles having excellent physical properties and desirable rubbery characteristics.Type: GrantFiled: January 5, 1981Date of Patent: February 2, 1982Assignee: Exxon Research & Engineering Co.Inventor: Ilan Duvdevani
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Patent number: 4309513Abstract: A resin composition based on a polyphenylene ether comprising 99 to 1 part by weight of a polyphenylene ether copolymer derived from 99.5 to 85 mole-% of 2,6-dimethylphenol and 0.5 to 15 mole-% of 3-methyl-6-tert-butylphenol and 1 to 99 parts by weight of a styrene polymer (making up 100 parts by weight in total); and said resin composition further containing 0.1 to 100 parts by weight of a rubber-like polymer for 100 parts by weight of the said resin composition. These resin compositions have excellent mechanical strength, heat resistance, and moldability and are suitable as molding resin materials in practical use fields.Type: GrantFiled: January 13, 1981Date of Patent: January 5, 1982Assignee: Sumitomo Chemical Company, LimitedInventors: Katsuji Ueno, Haruo Inoue, Akihiro Furuta
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Patent number: 4288567Abstract: Adhesive composition comprised of an unvulcanized block polymer product and a compatible tackifier resin. Said adhesive composition is required to be prepared by (A) mixing a solution of a block styrene/isoprene polymer product with a solution of a tackifying resin and (B) optionally removing the solvent.Type: GrantFiled: August 27, 1979Date of Patent: September 8, 1981Assignee: The Goodyear Tire & Rubber CompanyInventors: George W. Feeney, William G. Stevenson
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Patent number: 4272431Abstract: A new elastomeric composition is described, having an improved combination of characteristics, which is composed of an intimate admixture of(a) 25-85% by weight of a substantially amorphous ethene-.alpha.-alkene copolymer, having a relatively low X-ray crystallinity of below about 4% by weight; and a tensile strength of at least 10 kg/cm.sup.2, and(b) 15-75% by weight of an at least partially crystalline block copolymer of propene and ethene, having an ethene content of between about 1 and 25% by weight and relatively high X-ray crystallinity of at least about 25% by weight.Type: GrantFiled: October 30, 1979Date of Patent: June 9, 1981Assignee: Stamicarbon, B.V.Inventor: Herman A. J. Schepers
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Patent number: 4248758Abstract: A blend of a crosslinked ethylene-propylene-diene monomer (EPDM) and a thermoplastic elastomer. Such blends exhibit improved ozone resistance.Type: GrantFiled: May 10, 1978Date of Patent: February 3, 1981Assignee: Phillips Petroleum CompanyInventor: Roy F. Wright
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Patent number: 4247661Abstract: Certain thermoplastic blends have substantially improved hot strength (i.e., cohesive strength and resistance to sagging or tearing during milling or other hot processing). The blends comprise (1) at least one ethylene-propylene (EP) or ethylene-propylene-diene (EPDM) polymer and (2) at least one highly crystalline polyallomer, and are useful for tubing, wire and cable insulation, molded items and the like.Type: GrantFiled: December 26, 1979Date of Patent: January 27, 1981Assignee: The B. F. Goodrich CompanyInventors: Richard M. Herman, Martin Batiuk
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Patent number: 4210579Abstract: A thermoplastic mixture comprising (A) from 2 to 40% by weight of a partially crystalline ethylene/propylene copolymer or terpolymer having an ethylene content of from 70 to 90% by weight and an endothermic heat of fusion of from 6 to 18 cal/g, (B) from 30 to 93% by weight of a crystalline polypropylene, and (C) from 5 to 30% by weight of a copolymer of ethylene and vinyl acetate containing from 20 to 70% by weight of vinyl acetate, the percentages being based on the sum of (A)+(B)+(C).Type: GrantFiled: March 12, 1979Date of Patent: July 1, 1980Assignee: Bayer AktiengesellschaftInventors: Ulrich Grigo, Josef Merten, Rudolf Binsack, Erhard Tresper
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Patent number: 4172860Abstract: An adhesive composition having particular reference to solution cast and hot melt adhesives comprised of an admixture of a tackifier and an unvulcanized block polymer product produced by the process of contacting conjugated diolefinic monomers mixed with a suitable amount of divinylbenzene under solution polymerization conditions with a polystyryl lithium catalyst.Type: GrantFiled: October 2, 1978Date of Patent: October 30, 1979Assignee: The Goodyear Tire & Rubber CompanyInventors: George W. Feeney, Thomas G. Chambers, Shirley L. Church