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US Patent 4468487 - Polymer composition comprising nitrile copolymer, CPE and rubber
US Patent Issued on August 28, 1984
Estimated Patent Expiration Date:
September 24, 2002Estimated 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.
Estimated Patent Expiration Date:
September 24, 2002Estimated 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.AbstractDisclosed is an impact-resistant polymer composition based on a copolymer of an unsaturated nitrile, a substantially saturated rubber and a chlorinated polyethylene. To maintain high impact resistance while retaining good processing properties, the polymer composition comprises:A. 40-95 parts by weight of at least one copolymer obtained by polymerizing a mixture of:(1) 10-90 weight % of one or more monomers selected from the group consisting of styrene and derivatives thereof, and(2) 90-10 weight % of one or more monomers selected from the group containing of acrylonitrile and methacrylonitrile; andB. 5-60 parts by weight of a mixture comprising:(1) a substantially saturated rubber, and(2) chlorinated polyethylene having a chlorine content of from 32 to 45 weight %, a DSC crystallinity viscosity of at least 1.0, and wherein the weight ratio between rubber and chlorinated polyethylene is from 2:1 to 1:10. | InventorsAssigneeApplicationNo. 06/423313 filed on 09/24/1982US Classes:524/87, Nitrogen ring directly fused or bridged to a ring system524/100, Six-membered nitrogen ring having two or more ring nitrogen atoms525/192, Treating polymer or polymer mixture with a chemical treating agent other than solid polymer525/211, Fused- or bridged-ring reactant contains at least two ethylenic groups525/215, Halogenated hydrocarbon contains at least two ethylenic groups and is devoid of an aryl ring525/230, Polymer derived from nitrogen-containing reactant525/233, Polymer derived from nitrogen-containing reactant525/238Solid polymer derived from (meth)acrylonitrileField of Search525/192, Treating polymer or polymer mixture with a chemical treating agent other than solid polymer525/211, Fused- or bridged-ring reactant contains at least two ethylenic groups525/230, Polymer derived from nitrogen-containing reactant525/233Polymer derived from nitrogen-containing reactantExaminersPrimary: Seccuro, Carman J.Attorney, Agent or FirmUS Patent References3819763, 4341884, Polymer compositionIssued on: 07/27/1982 Inventor: Schepers4341885Polymer composition Issued on: 07/27/1982 Inventor: Schepers International ClassesC08L 25/12 (20060101)C08L 25/00 (20060101) C08L 23/00 (20060101) C08L 23/16 (20060101) C08L 23/28 (20060101) Foreign Application Priority Data1981-09-25 NL |
