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. 30, 1988
Filed:
Dec. 02, 1985
Applicant:
Inventors:
Assignees:
Nippon Paint Company Limited, Osaka, JP;
The University of Manchester Institute of Science and Technology, Manchester, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H / ;
U.S. Cl.
CPC ...
536 186 ; 536 183 ; 536120 ; 568620 ;
Abstract
Polymeric polyols are prepared by reacting a polyhydroxy initiator compound with an epoxide in the presence of alkali metal hydroxide catalyst used in an amount of at least 10% by mole based on the molar amount of polyhydroxy initiator compounds. The polyols so obtained may be chain extended by reaction with further epoxide in the presence of at least 10% by mole of an alkali metal hydroxide catalyst based on the molar amount of the polymeric polyol.