Modified carboxyl-containing polyphenylene ether resins
Patent 4751268 Issued on June 14, 1988. Estimated Expiration Date: 
November 12, 2006. 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.
November 12, 2006. 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 ReferencesPPO-Graft copolymer and process for producing the same Method for producing modified polyphenylene oxides Poly(phenylene ether)poly(vinyl aromatic) compositions Process for producing graft copolymers Patent #: 4338410 InventorsAssigneeApplicationNo. 06/929427 filed on 11/12/1986US Classes:525/132, With saturated phenolic reactant or polymer thereof; or with solid copolymer derived from at least one phenolic 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 is a phenolic reactant or with a reaction product thereof; or with a SICP containing a phenolic group Si-H or Si-C bond525/392, Unsaturated aromatic reactant or polymer thereof525/905POLYPHENYLENE OXIDEExaminersPrimary: Pertilla, Theodore E.Attorney, Agent or FirmInternational ClassesC08F 283/08 (20060101)C08F 283/00 (20060101) Foreign Application Priority Data1985-11-13 DEAbstractA process for the preparation of modified polyphenylene ether resins by grafting fumaric acid, preferably at from 270° to 350° C., onto polyphenylene ethers which are mixed with vinylaromatic polymers, and modified polyphenylene ether resins consisting of from 4.95 to 95 parts by weight of polyphenylene ether, from 95 to 4.95 parts by weight of vinylaromatic polymer and from 0.05 to 10 parts by weight of grafted fumaric acid.Field of SearchWith saturated phenolic reactant or polymer thereof; or with solid copolymer derived from at least one phenolic 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 is a phenolic reactant or with a reaction product thereof; or with a SICP containing a phenolic group Si-H or Si-C bondWith additional solid polymer derived from at least one nonethylenic reactant POLYPHENYLENE OXIDE Unsaturated aromatic reactant or polymer thereof | |
