The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 1985
Filed:
Jul. 07, 1983
Akira Takaki, Kobe, JP;
Hideki Hosoi, Kobe, JP;
Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, Osaka, JP;
Abstract
A MBS resin useful as a reinforcement for vinyl chloride polymers and capable of improving the impact resistance of the vinyl chloride polymers without impairing the transparency thereof, which is prepared by graft-polymerizing a monomer mixture comprising an aromatic vinyl compound and an alkyl methacrylate onto a butadiene copolymer comprising styrene and butadiene, the butadiene copolymer being present in the polymerization system in a higher proportion as compared with a conventional MBS resin and present in the form of an aqueous latex of particles having a structure such that a portion formed in the last stage of a polymerization for the preparation of the butadiene copolymer amounting to 20% by weight of the produced butadiene copolymer, has a very high butadiene content of 80 to 100% by weight and moreover has at least 5% by weight higher butadiene content than the average butadiene content of the produced butadiene copolymer.