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:
Mar. 22, 1994
Filed:
Sep. 28, 1992
Applicant:
Inventors:
Kazuo Kishida, Hiroshima, JP;
Kiyokazu Kitai, Westfield, NJ (US);
Assignee:
Mitsubishi Rayon Co., Ltd., , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ; C08F / ;
U.S. Cl.
CPC ...
525310 ; 525281 ; 525304 ; 525315 ; 525316 ; 525 67 ; 525 80 ;
Abstract
A weather resistant impact modifier for thermoplastic resins and a blend with the thermoplastic resin are disclosed. The modifier comprises a graft copolymer having a multi-layered structure which is obtained by graft polymerization of (c) 10-100 parts by weight of an aromatic vinyl compound or a monomer mixture mainly composed of an aromatic vinyl compound in a first stage and 10-100 parts by weight of a methacrylic ester or a monomer mixture mainly composed of a methacrylic ester in a second stage,