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. 04, 2008
Filed:
Mar. 14, 2006
Applicants:
Tatsuya Yamauchi, Niigata, JP;
Yasuhiro Kushida, Niigata, JP;
Yuuichi Sugano, Niigata, JP;
Yoshikazu Shima, Niigata, JP;
Inventors:
Tatsuya Yamauchi, Niigata, JP;
Yasuhiro Kushida, Niigata, JP;
Yuuichi Sugano, Niigata, JP;
Yoshikazu Shima, Niigata, JP;
Assignee:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 8/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
In the production of a nuclear-hydrogenated polymer, the hydrogenation of an aromatic vinyl compound—(meth)acrylate copolymer is conducted in a mixed solvent comprising an ester compound and an alcohol compound in the presence of a catalyst. By this method, a highly transparent nuclear-hydrogenated polymer is produced safely, stably and quickly, even when the degree of nuclear-hydrogenation is low.