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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 |
| 7230144 | Methods of making intermediates from polyhydroxyalkanoates Methods of forming intermediates from PHAs are disclosed. ... | 06/12/2007 |
| 7166743 | Methods of making intermediates from polyhydroxyalkanoates Methods of forming acrylic acid by heating a PHA are disclosed. The PHA can be derived from a biomass of a non-fossil source. The PHA can be, for example, poly 3-hydroxypropionate or a 3-hydroxypropionate containing polymer. The methods can include, for example, hea... | 01/23/2007 |
| 7128973 | Expanded polystyrene bead having functional skin layer, manufacturing process thereof, and functional EPS product and manufacturing process thereof using the same Expanded polystyrene particles having a polyvinyl acetate resin-based functional skin layer, and a process thereof are provided. The particle includes an inner expanded polystyrene layer; and a functional skin layer. The inner expanded polystyrene layer is formed by... | 10/31/2006 |
| 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 |
| 6960638 | Depot polymerization starter beads The invention relates to polymer beads having a high content of diacyl peroxides. A prolongation of the pot life in reaction resins based on high-boiling methacrylate esters is achieved due to this high content of peroxides. ... | 11/01/2005 |
| 6933404 | Methods of making intermediates from polyhydroxyalkanoates In some embodiments, this invention relates to a method that includes contacting a PHA with an aprotic catalyst to form an ester. The ester has only one monomer unit from the PHA. In certain embodiments, this invention relates to a method that includes treating a PH... | 08/23/2005 |
| 6831142 | Pulverulent, crosslinked polymers which absorb aqueous liquids and blood The invention relates to absorptive, crosslinked polymers which are based on partly neutralized, monoethylenically unsaturated monomers carrying acid groups, and have improved properties, in particular in respect of their capacity for transportation of liquids in th... | 12/14/2004 |
| 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 |
| 6313203 | Use of polyalcohols as polymer stabilizers Natural cyclic polyalcohols such as polyfructoses and, dehydration products of sugar alcohols can be used for stabilising thermoplastic polymers, at a ratio of 0.001-5 phr of polyol with respect to the polymer. The cyclic polyol is in particular inulin or... | 11/06/2001 |
| 5891971 | Polymerization processes A process for the preparation of a resin comprising: heating a mixture of at least one free radical polymerizable monomer, a free radical initiator compound, a stable free radical compound, and a reducing agent.... | 04/06/1999 |
| 5804662 | Agglomerated, finely divided, crosslinked vinylimidazole copolymers, preparation thereof, and use thereof Agglomerated, finely divided, crosslinked vinylimidazole copolymers obtainable by free-radically initiated polymerization of N-vinylimidazoles of the formula ##STR1## where R, R1 and R2 are identical or different and each is H, ... | 09/08/1998 |
| 5795944 | Programmed addition of heavy ethers for microstructure control of diene polymers A process for the polymerization of dienes which comprises anionically polymerizing dienes in the presence of an anionic polymerization initiator and a microstructure control agent is improved by adding the control agent to the polymerization mixture in t... | 08/18/1998 |
| 5563218 | Superabsorbent polymers Superabsorbent, high gel strength/short gel time acrylic polymers, well suited for the production of items of feminine hygiene/adult incontinence, are prepared by (a) inversely suspending an aqueous acrylic monomer phase in an organic solvent in the prese... | 10/08/1996 |
| 5529850 | Fibers produced from crystalline propylene polymers having high melt flow rate values and a narrow molecular weight distribution Crystalline propylene polymers having P.I. values lower than or equal to 3.7, and having, at an MFR (Melt Flow Rate) ranging from 600 to 1000 g/10 min., an Mw value from 100,000 to 60,000, and at a MFR ranging from 1000 to 2000 g/10 min., an Mz value high... | 06/25/1996 |
| 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 |
| 5395880 | Manufacturing method of resin granules The present invention provides a method which makes it possible to manufacture substantially spherical resin granules with a narrow grain size distribution by a simple operation. According to the present invention, there is provided a method of manufactur... | 03/07/1995 |
| 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 |
| 5219943 | Process for producing monodispersed vinyl polymer fine particles A process for producing monodispersed fine particles of a vinyl polymer is disclosed, which comprises polymerizing monomers containing at least one vinyl monomer selected from the group consisting of aromatic vinyl compounds, acrylic esters, and a methacr... | 06/15/1993 |
| 5112904 | Liquid coating composition including, as a crosslinking agent, an unblocked monoprimary amine A liquid coating composition is provided which comprises, as a binder, a compound containing at least two pendant activated unsaturated groups and, as a crosslinking agent for the activated unsaturated groups, a particular unblocked monoprimary amine comp... | 05/12/1992 |
| 4935469 | Process for producing monodispersed vinyl polymer fine particles A process for producing monodispersed fine particles of a vinyl polymer is disclosed, which comprises polymerizing monomers containing at least one vinyl monomer selected from the group consisting of aromatic vinyl compounds, acrylic esters, and a methacr... | 06/19/1990 |
| 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 |
| 4385156 | Process for producing coated styrenic polymer beads for heat resistant foams Styrenic polymer expandable beads that are useful in forming heat-resistant foamed articles are prepared by forming an aqueous suspension of initial styrenic polymer beads and adding thereto a portion of a comonomer solution of styrenic monomer and methac... | 05/24/1983 |
| 4382800 | Free amine-containing polymeric dyes Soluble polymeric colorants composed of free amine groups and chromophoric groups covalently bonded to an organic backbone are disclosed. The number of free amine groups is not less than one-half the number of chromophoric groups. The colorants are charac... | 05/10/1983 |
| 4269960 | Peroxygen compound-6-O-alkanoyl-L-ascorbic acid redox catalyst system for vinyl monomer polymerization A process for the bulk or suspension polymerization of vinyl monomers, particularly vinyl chloride, in the presence of a redox catalyst system consisting of a peroxyester or diacyl peroxide and an ascorbic acid ester of a carboxylic acid.... | 05/26/1981 |
| 4230643 | Process for the manufacture of a vinyl ester copolymer Copolymers of vinyl esters and crotonic acid are commonly prepared by polymerizing the monomers in bulk or in solution by means of a radical-forming initiator in the presence of a regulator. The polymers should be free from residual monomers and impuritie... | 10/28/1980 |
| 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 |
| 4151128 | Graft copolymers by suspension process following emulsion In the process disclosed herein, a latex comprising a diene rubber pregrafted with styrene/acrylonitrile type monomer mixtures, for example, about 5 to 50% by weight styrene/acrylonitrile emulsion-grafted thereon, is added to an aqueous solution of suspen... | 04/24/1979 |
| 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 |
| 4134927 | Production of thermoplastic olefin elastomers A process for preparing thermoplastic olefin elastomers which comprises mixing and extruding in a screw extruder (A) an olefin rubber having a number average molecular weight of about 10,000 to 100,000 and composed of a copolymer of ethylene with an ... | 01/16/1979 |
| 4133793 | Compositions containing novel methacrylic polymers having allyl functionality Polymers of esters of methacrylic acid having an average chain length of about 6 to about 50 mers are prepared by an anionic polymerization reaction, carried out in the presence of a chain-regulating alcohol and a catalytic amount of an alkoxide anion, in... | 01/09/1979 |
| 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 |
| 4082818 | Mercaptan activation by acid in the copolymerization of acrylonitrile Molecular weight control is achieved in the production of acrylonitrile copolymers by means of an acid-activated mercaptan chain transfer agent.... | 04/04/1978 |
| 4064116 | ABS polymer and process for its preparation ABS polymers having improved physical properties are prepared by graft polymerizing, in an aqueous medium, and in the presence of a suspending agent, styrene and acryonitrile onto a butadiene polymer in the form of a latex using certain peroxy ester catal... | 12/20/1977 |
| 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 |
| 4046839 | Compositions having high impact at low rubber levels ABS polymers having improved physical properties are prepared by graft polymerizing, in an aqueous medium and in the presence of an effective amount of suspending agent and polymerization catalyst, styrene and acrylonitrile onto a butadiene polymer in the... | 09/06/1977 |
