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:
Oct. 15, 1991
Filed:
May. 14, 1990
Applicant:
Inventors:
Makoto Uchida, Otake, JP;
Yutaka Toyooka, Otake, JP;
Kazuo Kishida, Hiroshima, JP;
Akira Nakata, Otake, JP;
Naoki Yamamoto, Hiroshima, JP;
Assignee:
Mitsubishi Rayon Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
525 85 ; 525 75 ; 525 77 ; 525 78 ; 526328 ; 526342 ; 526346 ;
Abstract
A process for producing an .alpha.-alkyl-substituted aromatic vinyl copolymer constituted of 60 to 85 parts by weight of the .alpha.-alkyl-substituted aromatic vinyl monomer, 15 to 35 parts by weight of a vinyl cyanide monomer, and 0 to 40 parts by weight of another vinyl monomer copolymerizable with these monomers, which process is characterized in that