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. 27, 1988
Filed:
Mar. 24, 1986
Applicant:
Inventors:
Shohei Inoue, Tokyo, JP;
Takuzo Aida, Tokyo, JP;
Michihide Honma, Kobe, JP;
Katsuhiko Isayama, Kobe, JP;
Assignee:
Kanegafuchi Chemical Industry Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560224 ; 568607 ; 568613 ; 568616 ; 502163 ; 560221 ;
Abstract
Polypropylene oxide having unsaturated end groups is prepared by polymerizing alkylene oxide in the presence of a complex catalyst prepared by reacting an organoaluminum compound with a porphyrin compound and an active hydrogen-containing compound and converting at least one hydroxyl end groups into an unsaturated end group(s), the prepared polymer having a narrow distribution of molecular weight.