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:
Aug. 01, 2017
Filed:
Mar. 05, 2014
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Keiko Ichinose, Nagoya, JP;
Makito Yokoe, Nagoya, JP;
Daisuke Yamamoto, Nagoya, JP;
Koji Yamauchi, Nagoya, JP;
Kohei Yamashita, Nagoya, JP;
Assignee:
TORAY INDUSTRIES, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 81/00 (2006.01); C08G 75/14 (2006.01); C08G 69/14 (2006.01); C08L 71/00 (2006.01); C08G 69/42 (2006.01); C08G 69/48 (2006.01);
U.S. Cl.
CPC ...
C08G 81/00 (2013.01); C08G 69/14 (2013.01); C08G 69/42 (2013.01); C08G 69/48 (2013.01); C08G 75/14 (2013.01); C08L 71/00 (2013.01); C08G 2261/126 (2013.01); C08G 2650/40 (2013.01);
Abstract
A block comprised of a copolymer is obtained by ring-opening polymerization of a cyclic polyarylene sulfide, so that a block copolymer is produced to have a maximum peak molecular weight measured by size exclusion chromatography (SEC) in a range of not less than 2,000 and less than 2,000,000 and have a unimodal molecular weight distribution in this range.