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:
Jun. 11, 2002
Filed:
Jul. 10, 2000
Applicant:
Inventors:
Michiel Barend Eleveld, Amsterdam, NL;
Willem Karzijn, Amsterdam, NL;
Ronald Van Kempen, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 1/848 ;
U.S. Cl.
CPC ...
C08G 1/848 ;
Abstract
Process for the preparation of a macramer suitable as a stabilizer precursor in a polymer polyol, which process comprises reacting a polyol with a cyclic dicarboxylic acid anhydride not containing any polymerizable double bond, and subsequently reacting the adduct thus obtained with an epoxide compound containing a polymerizable double bond. The macromers can be applied for the preparation of polymer polyols which are, in turn, very suitable for manufacturing flexible polyurethane foams.