Sinterable, finely particular molding composition based on vinyl chloride polymers
Patent 4636547 Issued on January 13, 1987. Estimated Expiration Date: 
July 19, 2005. 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.
July 19, 2005. 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 References 2868763 3865799 Sinterable, finely divided molded material based on polyvinyl chloride Patent #: 4546135 InventorsApplicationNo. 06/756970 filed on 07/19/1985US Classes:524/523, Solid polymer derived from carboxylic acid ester monomer264/126, Of organic material264/331.18, Carboxylic acid or derivative (e.g., acrylic, etc.)521/919, SINTERED PRODUCT524/186, Organo nitrogen compound other than unsubstituted ammonium salt as sole nitrogen atom DNRM524/236, Trivalent or tetravalent nitrogen atom other than unsubstituted ammonium524/504, Solid graft or solid graft-type copolymer with other solid polymer, SICP, or SPFI525/227, Ester derived from an unsaturated carboxylic acid525/239, Solid polymer derived from vinyl(idene) chloride525/80, Mixture contains solid polymer derived from reactant containing carboxylic acid ester group525/85Polymer substrate derived from an unsaturated carboxylic acid esterExaminersPrimary: Seccuro, Carman J.Attorney, Agent or FirmInternational ClassesC08K 5/19 (20060101)C08L 27/06 (20060101) C08L 27/00 (20060101) C08K 5/00 (20060101) H01B 3/44 (20060101) H01M 2/16 (20060101) Foreign Application Priority Data1984-07-21 DEAbstractA molding composition which is essentially composed of a mixture of at least two polymers based on vinyl chloride and at least one water-soluble surfactant is described. One of the polymers is a sinterable vinyl chloride/alkyl acrylate copolymer which can contain, in addition, polymerized units of vinyl acetate and ethylene. At least one further polymer is a vinyl chloride polymer which can contain up to 5% by weight of polymerized units of vinyl acetate and ethylene. The molding composition is suitable for the production of sintered, porous, flexible moldings, in particular separator compartments for electric cells.Other References
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