Ethylene-vinyl acetate copolymer rubbers
Patent 4309332 Issued on January 5, 1982. Estimated Expiration Date: 
May 5, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 5, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References3873494 InventorsAssigneeApplicationNo. 06/146926 filed on 05/05/1980US Classes:523/212, Product having a silicon atom as part of an organic compound524/409, Antimony524/430, A single type of metal atom and only oxygen atoms DNRM, e.g., metal oxide, etc.524/447, Kaolin or bentonite524/451, Talc (soapstone) DNRM524/507, With solid polymer derived from at least one -N=C=X (X is chalcogen) reactant wherein at least one of the reactants forming the solid polymer is saturated; or with SPFI or SICP derived from a -N=C=X reactant wherein at least one of the necessary reactants is saturated524/524, Ester derived from an unsaturated alcohol and a saturated acid, e.g., vinyl acetate, etc.524/87, Nitrogen ring directly fused or bridged to a ring system525/123, With saturated -N=C=X (X is chalcogen) reactant or polymer thereof; or with solid copolymer derived from at least one -N=C=X reactant wherein at least one of the reactants forming the solid copolymer is saturated; or with SPFI wherein at least one of the necessary ingredients contains a -N=C=X group or with a reaction product thereof; or with SICP containing a -N=C=X group525/170, Solid polymer derived from ethylenic reactants only derived from at least one reactant containing an oxygen atom525/186, At least one reactant which forms additional polymer contains a heterocyclic ring525/192, Treating polymer or polymer mixture with a chemical treating agent other than solid polymer525/194, Agent is an organic material525/211, Fused- or bridged-ring reactant contains at least two ethylenic groups525/222, Solid polymer derived from reactant containing a carboxylic acid ester group525/229Ester derived from an unsaturated alcoholExaminersPrimary: Seccuro, Carman J.Attorney, Agent or FirmInternational ClassesC08L 23/00 (20060101)C08L 23/08 (20060101) C08L 31/00 (20060101) C08L 31/04 (20060101) C08L 21/00 (20060101) AbstractThe Mooney viscosity and green strength of ethylene-vinyl acetate (EVA) copolymer gum stock is improved by the addition thereto of a suitable elastomer such as: high viscosity ethylene propylene rubber (EPR); nitrile rubber; polychloroprene; polyacrylate rubber; polyurethane; chlorinated polyethylene; polyester; ethylene-propylene diene monomer (EPDM) terpolymer; and other elastomers such as ethylene-methyl acrylate, ethylene butyl acrylate and acrylonitrile types.Field of SearchSolid polymer derived from reactant containing a carboxylic acid ester groupTreating polymer or polymer mixture with a chemical treating agent other than solid polymer Solid polymer derived from chlorine-containing reactant other than vinyl(idene) chloride With saturated -N=C=X (X is chalcogen) reactant or polymer thereof; or with solid copolymer derived from at least one -N=C=X reactant wherein at least one of the reactants forming the solid copolymer is saturated; or with SPFI wherein at least one of the necessary ingredients contains a -N=C=X group or with a reaction product thereof; or with SICP containing a -N=C=X group Solid polymer derived from ethylenic reactants only derived from at least one reactant containing an oxygen atom | |
