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:
Nov. 15, 1983
Filed:
Sep. 16, 1981
Shoichi Matsumura, Kobe, JP;
Yoshihiko Hashimoto, Kobe, JP;
Hiroyasu Furukawa, Kobe, JP;
Masaaki Azuma, Kobe, JP;
Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, Osaka, JP;
Abstract
A nitrile based resin produced by graft polymerizing in the presence of a rubber, a first group of monomers in a first polymerization step, then a second group of monomers in a second polymerization step, and then a third group of monomers in a third polymerization step; wherein the resin comprises (A) 5 to 25 parts by weight of the rubber and (B) 75 to 95 parts by weight of (I) 5 to 40 weight percent of the product of the first polymerization step comprising .lambda. weight percent unsaturated nitrile and 100-X weight percent vinyl compound having aromatic vinyl compound as an essential element; (II) 2 to 35 weight percent of the product of the second polymerization step comprising Y weight percent unsaturated nitrile and 100-Y weight percent vinyl compound having aromatic vinyl compound as an essential element; and (III) 25 to 93 weight percent of the product of the third polymerization step comprising Z weight percent unsaturated nitrile and 100-Z weight percent vinyl compound having aromatic vinyl compound as an essential element, wherein