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| Number | Title | Issue Date |
| 7288597 | Process of making polymeric hydrogels by reactive extrusion What is described is a reactive extrusion process of making a polymeric hydrogel of a polymeric anhydride or acid, e.g. maleic anhydride or maleic acid polymer, or copolymer thereof, crosslinked with a crosslinking agent containing at least 2 crosslinkable groups, p... | 10/30/2007 |
| 7122602 | Process of making polymeric hydrogels by reactive extrusion What is described is a reactive extrusion process of making a polymeric hydrogel of a polymeric anhydride or acid, e.g. maleic anhydride or maleic acid polymer, or copolymer thereof, crosslinked with a crosslinking agent containing at least 2 crosslinkable groups, p... | 10/17/2006 |
| 6770701 | Acrylic-halogenated polyolefin copolymer adhesion promoters The present invention is directed to a method for producing a copolymer and a copolymer product of the method. The copolymer is prepared by a controlled radical polymerization process, typically an atom transfer radical polymerization process, in which polymerizable... | 08/03/2004 |
| 6706817 | Polymeric hydrogels What is described is a polymeric hydrogel of a polymeric anhydride or acid, e.g. maleic anhydride or maleic acid polymer, or copolymer thereof, crosslinked with a crosslinking agent containing at least 2 crosslinkable groups, particularly, —OH or —NH2... | 03/16/2004 |
| 6583225 | Polymeric hydrogels What is described is a polymeric hydrogel of a polymeric anhydride or acid, e.g. maleic anhydride or maleic acid polymer, or copolymer thereof, crosslinked with a crosslinking agent containing at least 2 crosslinkable groups, particularly, --OH or --NH | 06/24/2003 |
| 6458896 | Superabsorbent powders of high absorption and high capillary suction Certain mixtures of two superabsorbent powders having very different capillary suctions exhibit a resulting capillary suction which approaches the higher value. The resulting mixtures simultaneously exhibit a high capillary suction and a high intrinsic ab... | 10/01/2002 |
| 6031051 | Liquid crystal displays containing spacers and methods for producing the spacer Methods for preparing uniformly sized polymer particles comprised of multi-functional monomers such as poly(1,4-butanediol diacrylate) and poly(1,6-hexanediol diacrylate) are disclosed. The particles are of a size, uniformity, and contain physical charact... | 02/29/2000 |
| 5652309 | Method of preparing water-absorbing resin A method of preparing a water-soluble resin, which comprises the steps of: subjecting an aqueous solution of a first water-soluble ethylenically unsaturated monomer to a first-stage water-in-oil type of reverse-phase suspension polymerization using a wate... | 07/29/1997 |
| 5652292 | Suspension polymerized aqueous absorbent polymer particles A process for making clusters of individual polymer beads bonded together to minimize attritition in use or processing but characterized by an open structure for fast absorption of aqueous solutions comprises suspending a monomer mixture in a continuous p... | 07/29/1997 |
| 5612419 | Fluorinated thermoplastic elastomers having superior mechanical and elastic properties, and the preparation process thereof Fluorinated thermoplastic elastomers comprising monomeric units deriving from a bis-olefin having general formula: ##STR1## wherein: R1, R2, R3, R4, R5, R6, equal or different from eac... | 03/18/1997 |
| 5408005 | Process for the manufacture of an impact-resistant thermoplastic resin A process for preparing a rubber modified thermoplastic resin, in which a latex in aqueous emulsion is prepared in the presence of an ionic surfactant; a vinyl monomer insoluble or substantially insoluble in water is added, and the particles of the latex ... | 04/18/1995 |
| 5314966 | Process for the preparation of a finely divided vinyl chloride graft copolymer and its use as viscosity-reducing agent and flatting agent The present invention is directed to a process for the preparation of a finely divided vinyl chloride graft copolymer and to the use of this product as a viscosity-reducing agent for plastisols.... | 05/24/1994 |
| 5300578 | Method for preparing a vinyl polymer-polyolefine composite A method for preparing a polyolefine--vinyl polymer composite, wherein about 10-200 parts by weight of vinyl monomer and about 0.01-4.0 parts by weight of a free radical polymerization initiator, based on 100 parts by weight of vinyl monomer, are impregna... | 04/05/1994 |
| 5270395 | Process of dispersion polymerization of butadiene in propane or butane Butadiene is polymerized alone or with a monomer such as styrene in a dispersion in propane, butane or its mixtures with minor amounts of other C4 -C6 alkanes, e.g., n-pentane and a dispersant which is preferably a hydrogenated styre... | 12/14/1993 |
| 5173533 | Dispersion of reactive polymer particles A dispersion of reactive polymer particles obtained by polymerization of monomer in an organic liquid which dissolves the monomer but does not dissolve a polymer formed from the monomer, in the presence of a dispersion stabilizer composed of a high molecu... | 12/22/1992 |
| 5115000 | Biodegradable starch plastics incorporating modified polyethylene A composition is disclosed for a biodegradable, blendable plastic having improved tensile strength. It consists of starch, oxidized polyethylene, and polyethylene. The starch is included in an amount up to 50% by weight, the oxidized polyethylene up to 15... | 05/19/1992 |
| 5115031 | Process for the manufacture of an impact resistant thermoplastic resin A process for preparing a rubber modified thermoplastic resin, in which a latex in aqueous emulsion is prepared in the presence of a non-ionic surfactant; a vinyl monomer insoluble or substantially insoluble water is added, and the particles of the latex ... | 05/19/1992 |
| 4985505 | Process of dispersion polymerization of butadiene in propane or butane Butadiene is polymerized alone or with a monomer such as styrene in a dispersion in propane, butane or its mixtures with minor amounts of other C4 -C6 alkanes, e.g., n-pentane and a dispersant which is preferably a styrene/hydrogenat... | 01/15/1991 |
| 4952635 | Process for the manufacture of an impact resistant thermoplastic resin A process for preparing a rubber modified thermoplastic resin, in which a latex in aqueous emulsion is prepared in the presence of a non-ionic surfactant; a vinyl monomer insoluble or substantially insoluble water is added, and the particles of the latex ... | 08/28/1990 |
| 4871814 | High impact, highly transparent linear styrene-diene block copolymers with five or more blocks and their preparations by anionic dispersion polymerization High molecular weight linear block copolymers containing 5 or more alternating blocks of (A) polymerized styrene or alkyl substituted styrene units, and (B) polymerized conjugated diene units, terminated by (A) units, are prepared by anionic dispersion po... | 10/03/1989 |
| 4822858 | Process for the preparation of polybutadiene grafted with styrene and acrylonitrile and having a very low end content of unreacted residual monomers During the reaction of grafting of styrene and acrylonitrile to polybutadiene, the conversion of the graft monomers is increased from the values of 92.div.94% usually obtained, to values very close to 98%, by carrying out a redox-type reaction additional ... | 04/18/1989 |
| 4789715 | Process for polymerizing vinyl chloride with polyglycosyl polyol esters A polyvinyl chloride is produced by suspension polymerization in the presence of two suspension agents, namely (a) 10-90% by weight, based on the mixture, of a carbohydrate ester of a carbohydrate having the following formula ##STR1## wherein n is a... | 12/06/1988 |
| 4719265 | Process for the production of a pourable polyvinyl chloride with high proportions of acrylate elastomers A pourable polyvinyl chloride having an acrylate content of at least 30 percent by weight, is formed through a process wherein the emulsion polymerization of an acrylic acid ester forming soft polymers is conducted together with a diene crosslinking agent... | 01/12/1988 |
| 4652511 | Process for producing resin composition useful as electrophotograhic toner A process for producing a resin composition which comprises suspension-polymerizing at least one vinyl monomer in an aqueous medium in the presence of a dispersing agent, said suspension polymerization being carried out using a nonionic dispersant as said... | 03/24/1987 |
| 4574141 | Method for producing graft-copolymers of vinyl chloride and polyfluorine resin by copolymerization This invention relates to a method for graft-copolymerizing vinyl chloride monomer to a polyfluorine resin to produce resins of improved physical properties and processability parameters. The vinyl chloride monomer and polyfluorine resin are first treated... | 03/04/1986 |
| 4208490 | Process for preparing polymer resins A process for preparing polymer resins by polymerization of at least one ethylenic monomer onto at least one rubbery polymer optionally grafted with at least one ethylenic monomer which comprises initiating the polymerization in an emulsion system, adding... | 06/17/1980 |
| 4187202 | Process for preparing polymer resins of high impact resistance A process for preparing polymer resins of high impact resistance which comprises coagulating a latex of a rubbery polymer grafted or not with at least one ethylenic monomer in the presence of a suspension stabilizer and a coagulating agent to make a stabl... | 02/05/1980 |
| 4155899 | Post bulk polymerization process for polyvinyl halide and composition thereof An improved polyvinyl halide or a polyvinyl halide copolymer containing up to 50 percent of a comonomer can be obtained by post polymerizing in a single stage or two-stage bulk process in contact with a base polymer, the same or different monomer as the m... | 05/22/1979 |
| 4151226 | Process for producing thermoplastic resin highly resistant to impact and weather A process for producing a thermoplastic polymer highly resistant to impact and weather by graft-copolymerizing, in the presence of a water-soluble polymer and a radical polymerization initiator in an aqueous medium, [B] 90 to 60 parts by weight of a monom... | 04/24/1979 |
| 4141932 | Combined emulsion and suspension process for producing graft ABS bead-like particles A method of preparing a graft ABS polymer comprising first preparing a rubbery graft ABS polymer by emulsion polymerizing acrylonitrile and styrene in the presence of a rubber, coagulating the emulsion and then polymerizing a mixture of acrylonitrile and ... | 02/27/1979 |
| 4112021 | Process for producing thermoplastic resin A process for producing a thermoplastic resin having excellent impact resistance and processability, which comprises polymerizing an aromatic monovinyl monomer and a vinyl cyanide monomer in the presence of an aqueous elastomeric latex, mixing with agitat... | 09/05/1978 |
| 4110413 | Thermoplastic high acrylonitrile resins This invention concerns a method of polymerizing high acrylonitrile resins in the presence of polymerized copolymers or terpolymers to produce thermoplastic products susceptible to molding and processing operations and having high impact strength and high... | 08/29/1978 |
| 4080405 | Process for chemical modification of polyolefins to improve their wettability A process for chemical modification of polyolefins, particularly fibrillar, powder, granular or film polyolefins, in which one or more polar monomers are grafted to the polyolefins in an aqueous dispersion, by means of a free-radical generator. Grafting i... | 03/21/1978 |
| 4048260 | Thermoplastic compositions with improved processing properties Mixtures based on vinyl chloride polymers and small amounts of copolymer of an ester of acrylic acid or methacrylic acid, which mixtures have been obtained by polymerization of vinyl chloride in the presence of the above copolymer. The said copolymer cont... | 09/13/1977 |
| 4028329 | Process for the bulk polymerization of vinyl halide polymers showing reduced reactor scale formation An improved bulk polymerization of vinyl halide is disclosed wherein reactor scale formation is substantially reduced by polymerizing in a single or two stage bulk process a vinyl halide monomer containing up to 50% of a comonomer in contact with a combin... | 06/07/1977 |
| 4002812 | Production of uniform copolymer of acrylonitrile and aromatic olefines Copolymers of acrylonitrile and conjugated aromatic olefines, such as styrene, containing 50-95% molar of acrylonitrile are made using an aqueous suspension process in which hydroxyethyl cellulose is used as the suspension agent.... | 01/11/1977 |
| 4002811 | Production of uniform copolymer of acrylonitrile and aromatic olefines Copolymers of acrylonitrile and conjugated aromatic olefines, such as styrene, containing 50-95% molar of acrylonitrile are made using an aqueous suspension process in which polyvinyl pyrrolidone is used as suspension agent.... | 01/11/1977 |
| 4000220 | Method for producing thermoplastic resin The invention relates to a method for producing a thermoplastic resin useful particularly as an engineering plastics, which comprises suspending in an aqueous medium a solution comprising (a) a non-polar rubbery polymer having an iodine value of 2 to 40, ... | 12/28/1976 |
| 3970718 | Method of producing polymer compositions based on chlorinated polyethylene In a method for producing a polymer composition by contacting A. a polymer component selected from the group consisting of chlorinated polyethylene and a mixture consisting of a major amount of chlorinated polyethylene and a minor amount of copolymer selected ... | 07/20/1976 |
| 3944630 | Process for preparing an impact resistant thermoplastic graft copolymer composition An impact resistant plastic graft copolymer composition is prepared by 1. agglomerating 100 parts by weight in terms of the solids content of a synthetic rubber latex (A) containing small-sized rubber particles by adding 0.1 - 5 parts by weight, in terms of th... | 03/16/1976 |
