Polymerizing In The Presence Of A Solid Polymer Derived From Ethylenic Reactants Only Patents (Class 524/461)
  • Publication number: 20020160182
    Abstract: An aqueous composition suitable for use, when dry, as an improved elastomeric coating, caulk, sealant, fabric treatment, or pressure sensitive adhesive is provided including a predominantly acrylic aqueous emulsion polymer, the polymer having a glass transition temperature (Tg) from −90° C. to 20° C., formed by the free radical polymerization of at least one ethylenically unsaturated nonionic acrylic monomer and 0-7.5%, by weight based on the total weight of said polymer, ethylenically unsaturated acid monomer until 90-99.7% of said monomers by weight, based on the total weight of said polymer, has been converted to polymer and subsequently at least half of the remaining monomer is converted to polymer in the presence of 0.01-0.099%, by weight based on the total weight of said polymer, t-alkyl hydroperoxide, t-alkyl peroxide, or t-alkyl perester wherein the t-alkyl group includes at least 5 Carbon atoms or, alternatively, the polymer is formed in the presence of 0.01-1.
    Type: Application
    Filed: October 17, 2001
    Publication date: October 31, 2002
    Inventors: Dennis Paul Lorah, Robert Victor Slone
  • Patent number: 6462114
    Abstract: A process for forming a microgel which comprises a crosslinked core and a multiplicity of linear polymeric arms attached to the core, wherein the process comprises (a) first forming a halogen atom terminated prepolymer with a weight average molecular weight from 1,000 to 25,000 by polymerizing monoethylenically unsaturated monomers in the presence of an organic sulfonyl halide, an organic complexing agent and a transition metal (i.e., Cu, Ru, Ni, Re, Pd, Fe, or Rh); and (b) subsequently polymerizing the prepolymer with a mixture of monoethylenically unsaturated monomers and 0.5 to 60 mole percent, based on the total moles of monomer and prepolymer, of multi-olefinic polymerizable monomers to form a microgel with a weight average molecular weight of 10,000 to 100,000,000 and crosslinked core.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: October 8, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles T. Berge, Michael Fryd, Jeffrey W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
  • Patent number: 6455616
    Abstract: A composition comprising: (a) polyethylene; (b) as a stabilizer, (A) 1,6-hexanediamine, N,N′-bis(2,2,6,6-tetramethyl-4-piperidinyl)-polymer with 2,4,6-trichloro-1,3,5-triazine, reaction products with N-butyl-1-butanamine and N-butyl-2,2,6,6-tetramethyl-4-piperidinamine (CAS number 192268-64-7) or (B) poly[(6-morpholino-s-triazine-2,4-diyl) [2,2,6,6-tetramethyl-4-piperidyl)imino]-hexamethylene[(2,2,6,6-tetramethyl-4-piperidyl)imino]] (CAS number 082451-48-7); and (c) an organic peroxide.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: September 24, 2002
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventor: Jeffrey Morris Cogen
  • Patent number: 6372840
    Abstract: In a dispersion containing acrylic polymer microparticles, particularly useful in automotive coatings, the dispersion is formed by free radical addition copolymerization of unsaturated monomers in a hydrocarbon dispersing medium in the presence of first and second polymeric dispersion stabilizers. The first polymeric dispersion stabilizer has an acrylic backbone and polyester side chains, and the second polymeric dispersion stabilizer is a branched polyester formed from the reaction of polyol, polyacid or anhydride, and fatty acid.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: April 16, 2002
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Mohamad D. Shalati, Susana C. Steppan, Michael A. Mayo
  • Patent number: 6355718
    Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises: I) introducing mono-olefinic monomer, catalyst, and initiator into a reactor in the absence of multi-olefinic monomer and producing an activatable prepolymer, component B; II) contacting the product of I) with multi-olefinic monomer to produce components A and C, optionally in the presence of additional initiator; also optionally in the presence of additional mono-olefinic monomer and initiator; the ratio of components A/(B+C) can be controlled by varying the mole ratio of Component B/ multi-olefinic monomer from 0.05/1 up to 5/1, by decreasing the mole ratio to increase the ratio of A/(B+C), and increasing the mole ratio to decrease the ratio of A/(B+C).
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: March 12, 2002
    Assignees: E. I. du Pont de Nemours and Company, Commonwealth Scientific and Industrial Research Organization, University of Melbourne, Australia
    Inventors: Charles T. Berge, Michael Fryd, Jeffrey W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
  • Publication number: 20020022684
    Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises:
    Type: Application
    Filed: October 3, 2001
    Publication date: February 21, 2002
    Inventors: Charles T. Berge, Michael Fryd, Jeffery W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San H. Thang
  • Publication number: 20020019476
    Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises:
    Type: Application
    Filed: October 3, 2001
    Publication date: February 14, 2002
    Inventors: Charles T. Berge, Michael Fryd, Jeffrey W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
  • Publication number: 20020019475
    Abstract: A process for preparing microgel(s) that uses a wide range of activatable prepolymers; in the process, a polymer composition of crosslinked component A and soluble components B and C is formed from mono-olefinic and multi-olefinic monomers in the presence of catalyst and initiator; the process comprises:
    Type: Application
    Filed: October 3, 2001
    Publication date: February 14, 2002
    Inventors: Charles T. Berge, Michael Fryd, Jeffery W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
  • Patent number: 6288148
    Abstract: Acrylic emulsions are obtained by carrying out a polymerization reaction of a first acrylic monomer dispersion, adding a second acrylic monomer dispersion, and carrying out a further polymerization reaction wherein the first acrylic monomer dispersion contains acrylic monomer and tackifier in a first proportion to acrylic monomer contained in the first acrylic monomer dispersion and wherein the second acrylic monomer dispersion contains acrylic monomer and tackifier in a second proportion to acrylic monomer contained in the second acrylic monomer dispersion, and wherein the proportion of tackifier in the first acrylic monomer dispersion is lower than the proportion of tackifier in the second acrylic monomer dispersion. A high molecular weight acrylic polymer is obtained when the first acrylic monomer dispersion is polymerization reacted. The second acrylic monomer dispersion is added to the first acrylic monomer dispersion after the first acrylic monomer dispersion is polymerization reacted.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: September 11, 2001
    Assignee: Sony Chemicals Corp.
    Inventors: Hiroshi Samukawa, Kazuki Shibata
  • Patent number: 6262159
    Abstract: Described is a polymer dispersion comprising in an aqueous medium (a) dispersed particles of a polymer containing more than from 5 to 20% by weight of &agr;,&bgr;-ethylenically unsaturated mono- or dicarboxylic acid, (b) a dissolved polymer containing from 60 to 100% by weight of &agr;,&bgr;-ethylenically unsaturated mono- or dicarboxylic acid, and (c) an alkoxylated long-chain amine. Heat-curable compositions are obtained by adding polyfunctional alcohols and, optionally, reaction accelerant. The polymer dispersions and the heat-curable compositions are suitable for use as binders for textile sheetlike structures and for moldings.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: July 17, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Dreher, Bernd Reck, Michael Seufert, Johannes Türk
  • Patent number: 6218456
    Abstract: An aqueous polymer dispersion obtainable by emulsion polymerization of a monomer mixture A) comprising from 50 to 100% by weight of C1-C18 alkyl (meth)acrylates, vinyl esters, vinylaromatic compounds, or mixtures thereof, in the presence of a protective colloid B) composed of b1) from 2 to 40% by weight of ethylenically unsaturated copolymerizable compounds (monomers) having at least one phosphate or phosphonate group b2) from 0 to 98% by weight of C1-C18 alkyl (meth)acrylates, vinyl esters or vinylaromatic compounds b3) from 0 to 50% by weight of further monomers, the amounts by weight being based on the protective colloid.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: April 17, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernhard Schlarb, Harm Wiese, Gerald Wildburg, Maria Gyopar Rau
  • Patent number: 6197855
    Abstract: The present invention provides polyamide compositions comprising a polyamide, nylon 2,2, and a phosphorous-containing whitening agent having Formula I: Formula I: wherein R is hydrogen, an alkyl group with 1 to 6 carbons, a cycloalkyl group with 5 to 6 carbons, or a phenyl or methylphenyl aromatic group, and M is hydrogen or a metal. In a preferred embodiment, the polyamide is nylon 6,6 (polyhexamethylene adipamide) and the phosphorous-containing whitening agent is a hypophosphorous acid or a metal hypophosphite. Sodium hypophosphite is especially preferred. The polyamide compositions of the present invention have improved molding cycle times, and are tough, white and color-stable.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: March 6, 2001
    Assignee: Solutia Inc.
    Inventors: Bruce A. Lysek, Rickey W. Ables
  • Patent number: 6136903
    Abstract: Repulpable PSA compositions and constructions that exhibit high adhesive performance on a wide range of substrates are provided. In one embodiment, a PSA composition comprises a blend of two emulsion acrylic copolymers. The first type is a repulpable, emulsion acrylic copolymer that passes TAPPI UM 213. Preferably, the copolymer is prepared by sequential polymerization. The second type of copolymer is a non-repulpable, gpp or removable, repositionable, emulsion acrylic copolymer, also preferably prepared by sequential polymerization. The PSA compositions are inherently tacky and can be used in labels and tapes. In addition, they can be added to other PSAs as external tackifiers.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: October 24, 2000
    Assignee: Avery Dennison Corporation
    Inventors: Shiaonung Su, Paul Keller, Graham Yeadon
  • Patent number: 6111007
    Abstract: A process is described for preparing a functionalized EPM or EPDM artificial latex from the EPM or EPDM polymerization reactor without isolating the polymer. The process includes i) post polymerization functionalizing of an EPM or EPDM copolymer, ii) dispersing the functionalized copolymer in water with an appropriate surfactant and iii) removing the solvents. The resulting latex is useful in paper coatings, latex coatings, adhesives, and in impact modifiers.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: August 29, 2000
    Assignee: OMNOVA Solutions Inc.
    Inventors: Barry M. Rosenbaum, Edward N. Kresge, Russell A. Livigni
  • Patent number: 6093766
    Abstract: The present invention relates to the preparation of heterogeneous, water-resistant polyvinyl ester dispersions having a film-forming temperature of below 10.degree. C., comprising the formation of a homo- or copolymer A, having a glass transistion temperature of more that 20.degree. C., by seed polymerization of a monomer mixture comprising 85-100% by weight of a vinyl ester of carboxylic acids having 1 to 18 carbon atoms,0-10% by weight of an .alpha.,.beta.-unsaturated carboxylic acid and/or of an N-functional compound and0-5% by weight of a polyethylenically unsaturated monomer in the presence of a seed base comprising a copolymer B having a glass transition temperature of below 20.degree. C., comprising45-98% by weight of a vinyl ester of carboxylic acids having 1 to 18 carbon atoms,2-50% by weight of an .alpha.-olefin having 1 to 4 carbon atoms and0-5% by weight of a polyethylenically unsaturated monomer.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: July 25, 2000
    Assignee: Clariant GmbH
    Inventors: Martin Jakob, Werner Prass
  • Patent number: 6028135
    Abstract: A process for the preparation of aqueous polymer dispersions of low viscosity with polymer volume concentrations of at least 50% by volume, based on the polymer dispersion, by free-radical emulsion polymerization of ethylenically unsaturated monomers, with the exception of vinyl halides and vinylidene halides, in the presence of at least one initiator and at least one initial polymer involves emulsifying the major proportion of the monomers in an aqueous dispersion of the initial polymer and supplying this emulsion continuously to the polymerization reaction.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: February 22, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Keller, Bernhard Schuler, Bernd Stanger
  • Patent number: 6025426
    Abstract: Hydrophilic cationic copolymers of acrylamide are prepared as dispersions in a salt media. These polymers have high molecular weights and are readily activated by diluting in water. These polymers are useful flocculants for such applications as sludge dewatering, raw water clarification aids, emulsion breakers and waste water clarification aids.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: February 15, 2000
    Assignee: Nalco Chemical Company
    Inventor: John R. Hurlock
  • Patent number: 6020438
    Abstract: An emulsion polymer comprising as one of its components a graft copolymer of a residual aromatic monomer-free support resin polymer and a vinyl chloride (co)polymer is disclosed. The emulsion polymer is prepared using a two-stage process. In the first stage, a chasing monomer is reacted in the presence of a support resin polymer having at least one aromatic monomer to form an polymer which is free of residual monomer and has monomeric units derived from the aromatic monomer(s). In a second stage, the vinyl chloride emulsion (co)polymer is made in situ in a reaction mixture comprising the polymer which is free of residual monomer. An extensive grafting at the second stage yields a novel water dispersible graft copolymer containing both styrene and vinyl chloride.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: February 1, 2000
    Assignee: The B. F. Goodrich Company
    Inventors: Alexander V. Lubnin, John E. Fitzwater, Vic Stanislawczyk, Michael W. Topp
  • Patent number: 6001424
    Abstract: The invention relates to a process for the preparation of a two-coat finish on a substrate surface, in which process a basecoat is employed which contains as binder a polymer which can be obtained by subjecting an ethylenically unsaturated monomer or a mixture of ethylenically unsaturated monomers to free-radical polymerization in an aqueous dispersion of a polyurethane resin which has a number-average molecular weight of from 1000 to 30,000 and contains on average from 0.05 to 1.1 polymerizable double bonds per molecule, and in the presence of a water-insoluble initiator or of a mixture of water-insoluble initiators, the weight ratio of the polyurethane resin to the ethylenically unsaturated monomer or to the mixture of ethylenically unsaturated monomers being between 1:10 and 10:1.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: December 14, 1999
    Assignee: BASF Lacke + Farben Aktiengesellschaft
    Inventors: Bernd Lettmann, Gerhard Reusmann, Egon Wegner
  • Patent number: 5973054
    Abstract: A method which produces colored minute particles by suspending in an aqueous suspending medium a polymerizable monomer composition obtained by dispersing a coloring agent at least in a polymerizable monomer and polymerizing the resultant suspension is characterized in that the dispersion of the coloring agent in the polymerizable monomer is performed in the presence of a dispersing agent, the polymerizable monomer composition exhibits a viscosity of not more than 300 cP, and the suspension of the polymerizable monomer composition in the aqueous suspending medium exhibits a viscosity of not more than 100 cP. The dispersing agent is at least one resin selected from the group consisting of rosin derivatives, aromatic petroleum resins, pinene type resins, epoxy type resins, cumdrone resins, and styrene-acryl type resins.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: October 26, 1999
    Assignee: Nippon Shokubal Co., Ltd.
    Inventors: Mitsuo Kushino, Nobuaki Urashima, Makoto Matsumoto, Tatsuhito Matsuda, Kazuhiro Anan
  • Patent number: 5969031
    Abstract: The present invention relates to a method for preparing polymer composites. The method includes providing a mixture of concentrated emulsions and polymerizing the mixture of concentrated emulsions under conditions effective to form a polymer composite. The mixture of concentrated emulsions includes either a divinyl-terminated macromonomer and a first partially polymerized concentrated emulsion of a first monomer or a first partially copolymerized concentrated emulsion of a divinyl-terminated macromonomer and a first monomer. The mixture of concentrated emulsions further includes either a second partially polymerized concentrated emulsion of a second monomer or a second partially copolymerized concentrated emulsion of a divinyl-terminated macromonomer and a second monomer. Using the methods of the present invention, polymer blends and/or polymer networks containing compatibilizers can be produced.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: October 19, 1999
    Assignee: The Research Foundation of State University of New York
    Inventors: Eli Ruckenstein, Hangquan Li
  • Patent number: 5891947
    Abstract: The present invention relates to a process for the dispersion copolymerization of 35 to 70% by weight of vinyl substituted aromatic monomer and 30 to 65% by weight of conjugated diene monomer comprising carrying out the copolymerization in a reaction mixture containing a liquid aliphatic hydrocarbon dispersing medium, an anionic catalyst system, and an "A" block of a copolymer dispersing agent, the dispersing agent having at least two polymer blocks wherein at least one of the polymer blocks is soluble in the dispersing medium and at least another of the polymer blocks is insoluble in the dispersing medium and is formed in situ.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: April 6, 1999
    Assignee: Bridgestone Corporation
    Inventors: James E. Hall, David M. Roggeman
  • Patent number: 5889101
    Abstract: An aqueous polymer emulsion obtainable by free radical polymerization of monomers in aqueous emulsion in the presence of a polymeric protective colloid contains, as components,from 5 to 50% by weight of at least one ethylenically unsaturated monomer having at least one acid or acid anhydride group (monomers I),from 0.1 to 80% by weight of at least one (meth)acrylate of an aliphatic alcohol of at least 10 carbon atoms (monomers II),from 0 to 94.9% by weight of main monomers selected from the group consisting of C.sub.1 -C.sub.8 -alkyl (meth)acrylates, vinyl esters of carboxylic acids of up to 20 carbon atoms, vinyl aromatics of up to 20 carbon atoms, ethylenically unsaturated nitriles, vinyl halides and aliphatic hydrocarbons having 2 to 8 carbon atoms and 1 or 2 double bonds (monomers III) andfrom 0 to 60% by weight of further monomers (monomers IV),the stated weights being based on the polymeric protective colloid.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: March 30, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernhard Schlarb, Eberhard Schupp, Maria Gyopar Rau, Gunther Schulz, Harm Wiese
  • Patent number: 5817370
    Abstract: Water dilutable binders, prepared by subjecting to free radical polymerization(A) from 20 to 90% by weight of a mixture of(a1) from 3 to 50% by weight of acrylic acid, methacrylic acid or a mixture of acrylic acid and methacrylic acid, and(a2) from 50 to 97% by weight of an ethylenically unsaturated monomer or a mixture of ethylenically unsaturated monomers,in the presence of(B) from 9.9 to 79.9% by weight of a halogen-free polyolefin free from maleic anhydride groups, or a mixture of halogen-free polyolefins free from maleic anhydride groups, and(C) from 0.1 to 10% by weight of a free radical initiator or a mixture of free radical initiatorsand, after neutralization of at least 20% of the carboxyl groups contained in the resulting polymerization product, dispersing the polymerization product in water, the sum of the percentages by weight of components (A), (B) and (C) and (a1) and (a2) in each case always being 100% by weight.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: October 6, 1998
    Assignee: BASF Lacke + Farben, AG
    Inventors: Horst Hinzte-Bruning, Harald Borgholte, Hans-Josef Oslowski, Albin Berger, Michael-Wolfgang Muller
  • Patent number: 5750613
    Abstract: This invention relates to aqueous, crosslinkable binder dispersions which have a low solvent content and contain hydroxy-functional polyethers, hydroxy-functional acrylate copolymers and hydroxy- and carboxy-functional acrylate copolymers, to a process for the production of these binders, to one and two-component binder compositions containing these binders and to the use of the binder compositions in coating compositions.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: May 12, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Harald Blum, Armin Sickert, Wieland Hovestadt
  • Patent number: 5661208
    Abstract: A dry, non-oily, non-greasy, rubber or vinyl surface protectant contains a silicone component and an acrylic component in its formulation. When only the silicone component is applied to rubber and vinyl surfaces, the surfaces become glossy but feel oily. When only the acrylic component is applied, they are glossy and feel dry but are tacky and draggy as if a heavy residue was present. When components are blended and applied to rubber and vinyl surfaces, the surfaces have a dry shine with good gloss and feel completely dry. The treated surfaces are also not tacky and give no sensation of heavy residue presence.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: August 26, 1997
    Assignee: Dow Corning Corporation
    Inventor: Tara Nicole Estes
  • Patent number: 5614579
    Abstract: A process is provided for the preparation of tapered copolymers by the nonaqueous dispersion polymerization of a mixture of 30 to 70% by weight of a conjugated diolefin monomer, preferably butadiene, and 30 to 70% by weight of a vinyl substituted aromatic monomer, preferably styrene, in a liquid hydrocarbon dispersion medium with an anionic initiator catalyst system in the presence of a block copolymeric dispersing agent. At least one block of the dispersing agent is prepared prior to the dispersion polymerization reaction and at least one block of the dispersing agent is prepared in situ during the dispersion copolymerization. The block of the dispersing agent that is prepared in situ has the polymer structure of the tapered copolymer.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: March 25, 1997
    Assignee: Bridgestone Corporation
    Inventors: David M. Roggeman, James E. Hall
  • Patent number: 5516865
    Abstract: A waterborne latex polymer composition having latex particles comprising (1) about 25 to about 75 weight percent of a first monomer, wherein the first monomer is at least one free-radically polymerizable long chain alkyl (meth)acrylate monomer; (2) about 75 to about 25 wt % of a second monomer, wherein the second monomer is a short alkyl chain (meth)acrylate monomer, wherein the alkyl group contains less than about 12 carbon atoms and the second monomer may be a mixture comprising; i) none, one or more (meth)acrylic acid monomers; ii) none, one or more vinyl nitrile monomers; and iii) none, one or more (meth)acrylic ester monomers, with the provisio that the second monomer mixture comprises at least one of (meth)acrylic acid monomer, vinyl nitrile monomer, and (meth)acrylic ester monomer and a method of making the latex particles.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: May 14, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Maria B. Urquiola
  • Patent number: 5447981
    Abstract: A poly(meth) acrylic acid dispersion with an organic solvent as outer phase, the dispersed phase particles having a low polydispersity is obtained by the free radical polymerization of (meth) acrylic acid and optionally co-monomers, which bring about a cross-linking of the poly(meth) acrylic acid, in a nonpolar, organic solvent in the presence of stabilizers, costabilizers, and initiators. The stabilizer is a block copolymer.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: September 5, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Jurgen Fock, Gotz Koerner, Karl-Heinz Reichert, Stephan Fengler, Roland Smolin
  • Patent number: 5444140
    Abstract: Simultaneous control of the molecular weight and the molecular weight distribution in the production of toner resins can be accomplished by using a starve fed emulsion polymerization process, which includes: selecting a desired molecular weight and molecular weight distribution of the polymer resin; determining a starve fed fraction to achieve the desired molecular weight and molecular weight distribution; and charging a reaction vessel with a chain transfer agent and a first monomer emulsion, and polymerizing monomer in the first monomer emulsion while simultaneously adding to the reaction vessel additional monomer, in the form of a second monomer emulsion, and additional chain transfer agent. The resins thus produced may be used in dry toners, liquid developers and inks suitable, for example, for ink jet applications.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: August 22, 1995
    Assignee: Xerox Corporation
    Inventors: Anthony J. Paine, Fatima M. Pontes, Karen A. Moffat
  • Patent number: 5432210
    Abstract: A method for preparing polymer particles having diameters within the range from less than 0.1 micron to about 200 microns is described. The method involves encapsulating at least one water insoluble monomer within a water soluble polymer containing at least one thiol functional group. This is accomplished by combining an organic phase containing the monomers and a free radical source with an aqueous phase containing the polymer to form a two phase mixture, and subjecting the two phase mixture to agitation or ultrasonic irradiation. This invention allows for the preparation of polymer particles with sizes not available by conventional suspension or emulsion polymerization methods. It also provides for polymer particles within the specifed size range having compositions not readily obtained by other polymerization methods. The polymer particles made by this method have an exterior portion of water soluble polymer bound to an interior polymer.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: July 11, 1995
    Assignee: Rohm and Haas Company
    Inventor: Leonard E. Bogan, Jr.
  • Patent number: 5420182
    Abstract: A water retaining adhesive composition prepared by polymerizing and partially crosslinking 100 parts by weight of a 20 to 35 wt % solution of the acrylic polymer with 2 to 5 parts by weight of the amine group compound, amide group compound or amino group compound at a temperature of 20.degree. C. to 80.degree. C.; adjusting the pH value of the resultant partially crosslinked polymer to 6.0 to 7.0; and then sequentially compounding 10 to 40 parts by weight of modifiers and 2 to 5 parts by weight of water retaining agent in the partially crosslinked polymer. The modifier is a polyol, a polyalcohol or a poly(ether alcohol). The water retaining agent is 2-pyrrolidone-5-carboxylate.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: May 30, 1995
    Assignee: Industrial Technology Research Institute
    Inventors: Rong-Shuh Chang, Tsai-Wie Tseng, Shinn-Jen Chang, Chien-Hsin D. Cheng
  • Patent number: 5403878
    Abstract: Polycarbonate resin compositions suitable for optical uses and methods for their preparation are disclosed. The disclosed compositions are comprised of polycarbonate resins and .alpha.-olefin oligomers and exhibit good mold release and thermal stability while experiencing little discoloration or molecular weight reduction during molding.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: April 4, 1995
    Inventors: Kenichi Ishiwa, Hideyuki Itoi
  • Patent number: 5401800
    Abstract: Substantially flat surfaced emulsion particles polymerized vinyl monomer, having a concavity in at least one of the flat surfaces, a diameter D of from 0.1 to 5.0 .mu.m, and a particle diameter thickness d ratio (d/D) of 1.2 to 5.0 prepared by the step of (1) aqueous emulsion polymerizing a first vinyl monomer or mixture of monomers (a) to form vinyl polymer seed particles; and (2) aqueous emulsion polymerizing a second vinyl monomer or mixture of monomers (b) in the presence of the vinyl polymer seed particles and a non-aqueous organic solvent having a surface tention to water at 20.degree. C. of 48 dyne/cm or more, in a weight ratio of monomer (a) to monomer (b) of 0.5/99.5 to 50/50; and are useful in high performance recording material, paint compositions and paper coating compositions.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: March 28, 1995
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Futoshi Hoshino, Makoto Nakano, Takeshi Yanagihara
  • Patent number: 5369163
    Abstract: A process for preparing large dimension emulsion polymer particles and the polymer products of the process are disclosed. In one embodiment, the invention provides particles having a high aspect ratio, having a shape described by a long axis and an intersecting short axis. These particles range in shape from egg-like, through rod-like, up to extended filaments. In another embodiment, the invention relates to large, nearly spherical emulsion polymer particles.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: November 29, 1994
    Assignee: Rohm and Haas Company
    Inventors: Shang-Jaw Chiou, Miao-Hsun L. Sheng, John W. Hook, III, Travis E. Stevens
  • Patent number: 5354801
    Abstract: A novel method for producing compositions comprising polymeric solution droplets is disclosed. The products are useful as retention aids in paper pulps, as flocculating agents for flocculating a wide variety of dispersions of suspended solids and as drive fluids for use in oil recovery.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: October 11, 1994
    Assignee: Cytec Technology Corp.
    Inventor: Michael P. O'Toole
  • Patent number: 5349004
    Abstract: Novel pressure-sensitive adhesives are described which show significant resistance to solvents and working fluids such as jet fuel, hydraulic fluid, de-icing fluid and the like. Adhesive compositions comprise nonaqueous dispersions of copolymers of acrylic monomers prepared in the presence of a vinyl-substituted fluoroalkyl siloxane having the general formula I and a macromonomeric stabilizer. The adhesives prepared from the adhesive compositions exhibit excellent adhesion to glass, aluminum, and low surface-energy materials such as fluoroalkyl siloxane elastomers.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: September 20, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ramesh C. Kumar, Albert I. Everaerts, Yvan A. Bogaert
  • Patent number: 5340868
    Abstract: A fibrous glass binder comprises a polycarboxy polymer, a .beta.-hydroxyalkylamide, and an at least trifunctional monomeric carboxylic acid.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: August 23, 1994
    Assignee: Owens-Corning Fiberglass Technology Inc.
    Inventors: Carl R. Strauss, Steven H. Williams
  • Patent number: 5331035
    Abstract: The present invention relates to a process for the dispersion copolymerization of 35 to 70% by weight of vinyl substituted aromatic monomer and 30 to 65% by weight of conjugated diene monomer comprising carrying out the copolymerization in a reaction mixture containing a liquid aliphatic hydrocarbon dispersing medium, an anionic catalyst system, and an "A" block of a copolymer dispersing agent, the dispersing agent having at least two polymer blocks wherein at least one of the polymer blocks is soluble in the dispersing medium and at least another of the polymer blocks is insoluble in the dispersing medium and is formed in situ.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: July 19, 1994
    Assignee: Bridgestone Corporation
    Inventor: James E. Hall
  • Patent number: 5189102
    Abstract: A method for producing a vinyl resin comprising the steps of dissolving or dispersing a polymerizable vinyl monomer in a polymerization solvent containing a silicone oil, and polymerizing the polymerizable vinyl monomer in the presence of a polymerization catalyst.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: February 23, 1993
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazuo Tsubuko, Shinichi Kuramoto, Kazuhiko Umemura, Hidemi Uematsu, Okawara, Makoto
  • Patent number: 5187221
    Abstract: A stryrene/butadiene graft copolymer latex has a graft substrate component with a comparatively high content of repeating units obtained by polymerization of styrene. The graft copolymer exhibits correspondingly comparatively hard and soft regions with a high and a low Tg, respectively.Vulcanizable compositions based thereon can be used for production of latex foams distinguished by a low compression set in a temperature range from 20.degree. to 70.degree. C., a high tensile strength, and a high elongation at break, and by a high compression resistance.
    Type: Grant
    Filed: January 20, 1988
    Date of Patent: February 16, 1993
    Assignee: Chemische Werke Huels Aktiengesellschaft
    Inventors: Herbert Schluter, Herbert Knipp, Alfred Wieland
  • Patent number: 5173523
    Abstract: Aqueous polymer emulsions whose polymer component essentially consists ofA) from 15 to 50% by weight of copolymer A ofI from 25 to 98.5% by weight of a C.sub.1 -C.sub.20 -alkyl acrylate or methacrylate or a mixture of these esters,II from 0 to 60% by weight of a monomer I or a vinylaromatic,III from 1.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: December 22, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Auchter, Gerhard Neubert, Rolf Osterloh
  • Patent number: 5166271
    Abstract: A heat resistant polyvinyl chloride copolymer or a heat and impact resistant polyvinyl chloride copolymer is prepared by conducting graft copolymerization of N-substituted maleimide on a vinyl chloride resin or a rubber containing vinyl chloride resin.The graft copolymerization reaction is carried out in the presence of a radical polymerizable monomer which is (1) liquid at the polymerization temperature, (2) capable of dissolving the N-substituted maleimide at the temperature, (3) 70.degree. C. or more in glass transition temperature of the polymer thereof, and (4) used in an amount sufficient to dissolve the N-substituted maleimide.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: November 24, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Seiichi Masuko, Hideaki Takahara, Akira Yamamoto
  • Patent number: 5104923
    Abstract: A non-polymerizable polycarboxylate imparts greater wet strength to nonwovens bound by an emulsion polymer containing a polymerizable cross-linker.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: April 14, 1992
    Assignee: Union Oil Company of California
    Inventors: Paul J. Steinwand, Dennis P. Stack
  • Patent number: 5071946
    Abstract: Reaction products of 1 mol of a cycloaliphatic diol corresponding to formula IHO--R--OH Iwith 2 mols cycloaliphatic carboxylic anhydrides corresponding to formulae II and/or III ##STR1## in which R is a cycloaliphatic hydrocarbon radical having 6 to 20 carbon atoms onto which the hydroxy groups are bonded directly or via methylene groups andX represents ##STR2## chemical bond obtainable by fusion of the cycloaliphatic diol and the cycloaliphatic carboxylic anhydride in an inert gas atmosphere at temperatures of from 100.degree. C. to 250.degree. C., and the alkali and ammonium salts of these reaction products, and their use as emulsifiers.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: December 10, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Adolf Schmidt, Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan
  • Patent number: 4940802
    Abstract: A 4,4'-bis(phthalimido)diphenyl sulfone compound having the formula: ##STR1## wherein X is a halogen atom, k=0 to 4, l=0 to 4, m=0 to 4 and n=0 to 4, provided k+l+m+n>1.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: July 10, 1990
    Assignee: Tosoh Corporation
    Inventors: Takao Matsuba, Masashige Kubo, Takumi Kagawa, Kiyotaka Oyama, Koji Kawabata
  • Patent number: 4845147
    Abstract: Nonaqueous polymer dispersions are obtainable by polymerization of esters (A) of acrylic acid and/or methacrylic acid and/or ethylacrylic acid with C.sub.1 -C.sub.20 -alcohols in an organic solvent or a mixture of organic solvents in which the polymers formed are insoluble, and in the presence of copolymers (B) having a molecular weight of from 500 to 20,000 and obtainable by bulk or solution polymerization of monoolefinically unsaturated monomers at from 180.degree. to 400.degree. C. and from 1 to 200 bar, and the said dispersions are used for the production of finishes, coating materials and adhesives.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: July 4, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Blum, Gerd Rehmer, Rolf Osterloh, Hans Sander
  • Patent number: 4798691
    Abstract: Capsule-shaped polymer particles and a process for the production thereof are described. In one embodiment of the process, a polymerizable monomer component containing a cross-linkable monomer and a hydrophilic monomer, and an oily substance are finely dispersed in water to prepare an oil-in-water emulsion and then the polymerizable monomer component is polymerized, whereupon capsule-shaped polymer particles containing the oily substance as a core material are obtained. Upon removal of the oily substance in the particles, there are obtained capsule-shaped hollow polymer particles. These capsule-shaped polymer particle are excellent in such properties as mechanical strength and heat resistance, and thus can find many applications.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: January 17, 1989
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Kiyoshi Kasai, Masayuki Hattori, Hiromi Takeuchi, Nobuo Sakurai
  • Patent number: 4746691
    Abstract: A colored opacified plastic material containing an organic binder, at least one pigment, a hydrophilic polymerizable plastic material and a cross linking agent is disclosed together with a method of making the same.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: May 24, 1988
    Assignee: Color Optics, Ltd.
    Inventor: Ari Fuhrman
  • Patent number: 4742108
    Abstract: A process for preparing a structure reinforced latex particle whose film has improved tensile and elongation properties prepared by an emulsion polymerization comprising a three-stage monomer feed addition. The second monomer feed is an amount form about 5 to about 30 parts per hundred parts monomer in said latex particle and is a polymer of which would have a T.sub.g greater than either the first or third monomer feed. The subject structure reinforced latex particle provides A film having improved tensile properties without a corresponding reduction in elongation. A pressure sensitive adhesive formulated with the structure reinforced latex particle is also provided.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: May 3, 1988
    Assignee: The Dow Chemical Company
    Inventors: Ashok C. Makati, Mezzie L. Ash, Do I. Lee