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:
Sep. 30, 2003
Filed:
Mar. 29, 2002
Applicant:
Inventors:
Il Kim, Ulsan, KR;
Sang Hyun Lee, Ulsan, KR;
Assignee:
SK Evertec Co., Ltd., Ulsan, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 2/726 ;
U.S. Cl.
CPC ...
B01J 2/726 ;
Abstract
A double metal cyanide complex catalyst for producing polyol, which is produced by using monovalent alcohol and polyvalent alcohol as a complexing agent. The double metal cyanide complex catalyst has advantages in that when polyol is produced by an epoxide polymerization reaction, the amount of unsaturated polyol produced is small, catalyst activation time is short, and the production yield of polyol is increased. There is no need to remove remaining catalyst from polyol after the polymerization reaction.