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:
May. 21, 2013
Filed:
Mar. 30, 2012
Applicants:
Chitoshi Suzuki, Tokyo, JP;
Takeaki Arai, Tokyo, JP;
Masahito Furumi, Tokyo, JP;
Hideaki Tanaka, Tokyo, JP;
Takayuki Sasaki, Tokyo, JP;
Akio Horie, Tokyo, JP;
Inventors:
Chitoshi Suzuki, Tokyo, JP;
Takeaki Arai, Tokyo, JP;
Masahito Furumi, Tokyo, JP;
Hideaki Tanaka, Tokyo, JP;
Takayuki Sasaki, Tokyo, JP;
Akio Horie, Tokyo, JP;
Assignee:
Asahi Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G 64/00 (2006.01); C08G 63/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing a polyether having at least one hydroxy group by subjecting a cyclic monomer to ring-opening addition polymerization to an initiator having a hydroxy group in the presence of a double metal cyanide complex catalyst, comprising the following steps: