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:
Jan. 12, 1993
Filed:
Dec. 27, 1991
Applicant:
Inventors:
Steven E Wujcik, Romulus, MI (US);
Donald L Christman, Grosse Ile, MI (US);
Oscar M Grace, Troy, MI (US);
Assignee:
BASF Corporation, Parsippany, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521130 ; 521157 ; 524724 ; 524759 ; 524761 ; 528 44 ; 528 48 ; 528 49 ; 528 52 ; 528 53 ;
Abstract
Addition of minor quantities of mono- or dicarboxylic acids to polyurethane foam formulations which employ polyisocyanate polyaddition polymer polyol dispersions prevents shrinkage and tightness in polyurethane foams prepared therefrom. If acid addition is made directly after dispersion preparation, reduction of polyol viscosity and more rapid stabilization against viscosity change is observed.