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| Number | Title | Issue Date |
| 7524901 | Recyclable isotactic polypropylene An easily recyclable cross-linked isotactic polypropylene that is additionally miscible with polyethylene is formed from a chemical reaction of combining a polymer, sulfur, peroxide, an accelerator, and at least one additive. The polymer can be mixtures of isotactic... | 04/28/2009 |
| 7309744 | Article formed from cross-linking isotactic polymers in the presence of peroxide An article of manufacture made of an isotactic polymer, a cross-linking agent, and an accelerator. The cross-linking agent includes a peroxide and a sulfur. The peroxide has an activity ranging from about 40% to about 100%. The ratio of the accelerator to the sulfur... | 12/18/2007 |
| 7285058 | Pre-vulcanized or pre-crosslinked materials for golf balls The present invention relates to golf ball components and golf balls comprising high levels of pre-vulcanized or pre-crosslinked materials, as well as methods of making same. The pre-vulcanized or pre-crosslinked materials are typically thermoset materials that are ... | 10/23/2007 |
| 7265186 | Multi-arm block copolymers as drug delivery vehicles The invention provides methods for making copolymers and multi-arm block copolymers useful as drug delivery vehicles. The multi-arm block copolymers comprise a central core molecule, such as a residue of a polyol, and at least three copolymer arms covalently attache... | 09/04/2007 |
| 7262253 | Process for the preparation of amphiphilic poly (N-vinyl-2-pyrrolidone) block copolymers The instant invention provides a two-step polymerization process for preparing amphiphilic poly(N-vinyl-2-pyrrolidone), (PVP)-block-polyester copolymers and other diblock and triblock copolymers consisting of PVP as one block. The block copolymers of the invention c... | 08/28/2007 |
| 7258904 | Absorber and method for producing it According to the present invention, a water absorbent material and materials to be sucked included in a water permeable bag type member form a water absorber. Thus, the water absorber is small both in weight and volume upon its transportation, and accordingly, the w... | 08/21/2007 |
| 7255804 | Process for making photonic crystal circuits using an electron beam and ultraviolet lithography combination A process for making photonic crystal circuit and a photonic crystal circuit consisting of regularly-distributed holes in a high index dielectric material, and controllably-placed defects within this lattice, creating waveguides, cavities, etc. for photonic devices.... | 08/14/2007 |
| 7241844 | Method for cross-linking isotactic polymers in the presence of peroxide A method for making isotactic polymer using a cross-linking agent entails introducing the cross-linking agent to a polymer and an accelerator. The cross-linking agent includes a peroxide and a sulfur. The peroxide has an activity ranging from about 40% to about 100%... | 07/10/2007 |
| 7141196 | Method of manufacturing a golf ball having one or more layers The present invention relates to golf ball components and golf balls comprising high levels of pre-vulcanized or pre-crosslinked materials, as well as methods of making same. The pre-vulcanized or pre-crosslinked materials are typically thermoset materials that are ... | 11/28/2006 |
| 7132482 | Method for vulcanizing caoutchouc or latex by applying a mixture of sulfur and a complexing agent The invention relates to a method for vulcanizing caoutchouc or latex by adding a mixture M which contains a component a) from a1) 20 to 96% by weight of sulfur, a2) 4 to 80% by weight of a complexing agent, and optionally other additives b) to caoutchouc or latex a... | 11/07/2006 |
| 6987149 | Isostatic polypropylene crosslinking in the presence of peroxide This invention concerns the crosslinking of isotactic polypropylene, which has always been considered a non-crosslinkable polymer. Isotactic polypropylene crosslinking not only generates new uses but also the prospects of both economic and environmentally friendly m... | 01/17/2006 |
| 6977102 | Absorber and method of manufacturing the absorber According to the present invention, a water absorbent material and materials to be sucked included in a water permeable bag type member form a water absorber. Thus, the water absorber is small both in weight and volume upon its transportation, and accordingly, the w... | 12/20/2005 |
| 6907911 | Thermoplastic blend The invention generally relates to thermoplastic blends having improved properties. Optionally, these blends may be dynamically vulcanized. More specifically, this invention is directed to a composition comprising a blend of chloromethylated(styrene-isobutylene) pol... | 06/21/2005 |
| 6727323 | Process for reducing odor emission in aqueous polymer dispersions and in polymer powders A process for reducing odor emission in aqueous polymer dispersions and in polymer powders comprises admixing an aqueous dispersion of a polymer obtained by free-radical polymerization of one or more ethylenically unsaturated monomers, after conclusion of the polyme... | 04/27/2004 |
| 6703446 | Hetero-telechelic polymers and processes for making same Hetero-telechelic polymers having the formula: wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hyd... | 03/09/2004 |
| 6699939 | Hetero-telechelic polymers and processes for making same Hetero-telechelic polymers having the formula: wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by incorporation of a compound selected from the group consisting of conjugated diene hyd... | 03/02/2004 |
| 6617390 | Method of making synthetic hydrophilic polymers and products resulting therefrom The present invention involves a method of making a multiblock copolymer containing two or more types of sequences of derivatives of acrylic acid with at least one derivative being acrylic acid salt and at least one being acrylamide. The method includes: ... | 09/09/2003 |
| 6559237 | Sulfonated perfluorocyclobutane ion-conducting membranes Disclosed are sulfonated aromatic perfluorocyclobutane polymers meeting a condition selected from: a) the equivalent weight of the polymer is 5000 or less, and b) the proton conductivity of the polymer at 25° C. is 0.01 Siemens per centimeter (S/cm) or h... | 05/06/2003 |
| 6512051 | Elastomer composition An elastomer composition including an elastomer having a functional group, and a compound having a functional group, in which corresponding functional groups form a cross-link by at least one of an ionic bond, a hydrogen bond, and Diels-Alder reaction wit... | 01/28/2003 |
| 6476152 | Method of preparation of products which absorb water intermolecularly A method of crosslinking polystyrene polymers and co-polymers for the formation of macroreticular materials of an Mc 30,000 to 50,000 is described. The materials forming an insoluble gel which is shaped in an extruder to 3 to 5 cm pieces and is subject to... | 11/05/2002 |
| 6451922 | Method of making synthetic hydrophilic polymers and products resulting therefrom The present invention involves a method of making a multiblock copolymer containing two or more types of sequences of derivatives of acrylic acid with at least one derivative being acrylic acid salt and at least one being acrylamide. The method includes: ... | 09/17/2002 |
| 6350797 | Use of cyclic sulfur silanes as coupling agents in sulfur-vulcanizable, silica-reinforced tire rubber compositions New sulfur-vulcanizable, silica-reinforced tire rubber compositions and tires and tire parts, vulcanized and unvulcanized, made employing them are made with coupling agent compositions comprising a sulfur-containing norbornanyl silicon compound of the str... | 02/26/2002 |
| 6300421 | Preparation of peroxide vulcanized rubber composition and articles having at least one component thereof The invention relates to preparation of EPDM-based and EPR-based rubber compositions which are vulcanized with peroxide together with a specified combination of sulfur and acrylate co-agents. The invention further relates to articles having at least one c... | 10/09/2001 |
| 6281296 | Curable perfluoroelastomer composition Perfluoroelastomer compositions comprising perfluoroelastomers having copolymerized units of tetrafluoroethylene, a perfluoro(vinyl ether), and a nitrile-containing cure site monomer are cured with compounds that are capable of generating ammonia at tempe... | 08/28/2001 |
| 6232406 | Hydrogel and method of making The present invention is a method of making acrylonitrile copolymers having multi block structure comprising acrylic acid, acryl amids and acrylamidine hydrophilic groups in hydrophilic blocks and residual nitrile groups in hydrophobic blocks, by partial ... | 05/15/2001 |
| 6221991 | Methacrylate and acrylate polymers and processes for making same Polar polymers having the following formula: FG-(Q)d -Rn -Z-J-[A(R1 R2 R3)]x (I) wherein FG is H or a protected or non-protected functional group; Q is a polar hydrocarbyl group derived by incorpor... | 04/24/2001 |
| 6160054 | Hetero-telechelic polymers and processes for making same Hetero-telechelic polymers having the formula: FG--(Q)d --Z--J--[A(R1 R2 R3)]x (I) wherein FG is a protected or non-protected functional group; Q is a saturated or unsaturated hydrocarbyl group derived by inc... | 12/12/2000 |
| 6066690 | Heat-vulcanizable rubber composition This application provides a heat vulcanizable rubber composition which prevents scorch in a molding process for the production of vulcanized rubber molded articles, and has good storage stability when the composition is formulated in the form of a one pac... | 05/23/2000 |
| 6051659 | Highly sensitive positive photoresist composition Positive resists sensitive to UV, electron beam, and x-ray radiation which are alkaline developable are formulated from a polymer material comprising recurrent structures having alkaline soluble groups pendent to the polymer backbone, a portion of which g... | 04/18/2000 |
| 5849828 | Metalation and functionalization of polymers and copolymers There is provided a method of introducing functionality into a copolymer of an isoolefin and an alkylstyrene at the alkylbenzyl carbon atom comprising the steps of: forming a solution of said copolymer in a hydrocarbon solvent; adding to said polymer solu... | 12/15/1998 |
| 5849847 | Telechelic polystyrene/polyethylene copolymers and processes for making same Polyalkenylaromatic-polyethylene copolymers are prepared using protected functional organolithium initiators. Polymerization of an alkenylsubstituted aromatic monomer followed by ethylene, results in a protected functional block polystyrene-co-polyethylen... | 12/15/1998 |
| 5827929 | Functionalized initiators for anionic polymerization A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure: M--Z--O--C(R1 R2 R3) wherein M is an alkali metal; Z is a branched or straight chain hydrocarbon grou... | 10/27/1998 |
| 5792815 | Functionalized polymer produced with functionalized initiators by anionic polymerization A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure: M--Z--O--C(R1 R2 R3) wherein M is an alkali metal; Z is a branched or straight chain hydrocarbon grou... | 08/11/1998 |
| 5721279 | Manufacture of cation exchange resins by pressurized sulfonation Cation exchange resins are prepared by sulfonating copolymer beads in the presence of a swelling solvent under pressure. Pressure sulfonation shortens cycle times and requires less energy while maintaining or improving product quality.... | 02/24/1998 |
| 5696193 | Immunoassay elements comprising polymers containing vandium IV (V+4) ions A dry immunoassay analytical element, for assaying a ligand, comprising in the following order: (a) a layer containing a labeled ligand; (b) a spreading layer; (c) a receptor layer containing a fixed concentration of an immobilized receptor for the labeled lig... | 12/09/1997 |
| 5696195 | Solutions of perfluorinated polymers in SF6 with or without CO2 Perfluorinated polymers are dissolved in supercritical carbon dioxide and/or sulfur hexafluoride at elevated temperatures and pressures. The solutions are useful for making foams, spun-bonded or paper-like webs, or for purification of polymers.... | 12/09/1997 |
| 5658995 | Copolymers of tyrosine-based polycarbonate and poly(alkylene oxide) Random block copolymers having the formula: ##STR1## wherein R1 is --CH.dbd.CH-- or (--CH2 --)j, in which j is zero or an integer from one to eight; R2 is selected from hydrogen, straight and branched alkyl... | 08/19/1997 |
| 5637627 | Method for producing a spherical ion exchange resin A method for producing a spherical crosslinked copolymer, which comprises polymerizing a monofunctional addition-polymerizable monomer and at least 0.5% by weight of a polyfunctional addition-polymerizable monomer on the basis of the total weight of monom... | 06/10/1997 |
| 5629386 | Halomethylation of polymer A process is provided for the halomethylation of the aromatic groups in an isoolefin-vinylidene aromatic monomer polymer by the in situ generation of the halomethylating species formed by the reaction of a methoxy alkoxy methane with a thionyl halide, the... | 05/13/1997 |
| 5624988 | Process for the production of polymer-bound rubber chemicals Process for the production of polymer-bound rubber chemicals, characterized in that the rubber chemicals and optionally additives are finely dispersed in a low molecular weight polymerizable liquid, polymerization is then initiated, optionally after addin... | 04/29/1997 |
