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. 10, 1991
Filed:
Aug. 10, 1989
Applicant:
Inventors:
Eric J Lind, Schaumburg, IL (US);
Manfred L Genz, Dearborn, MI (US);
Michele L Lee, River Rouge, MI (US);
Thomas B Lee, Southgate, MI (US);
Assignee:
BASF Corporation, Wyandotte, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
521137 ; 521914 ; 521174 ; 528 75 ; 528103 ;
Abstract
Polyurethane systems are disclosed utilizing polyvinyl acetate/allyl alcohol random copolymers to produce rigid polyurethane foams and a process for producing the same. The resulting foams exhibit improved K-factors, utilized reduced amounts of fluorocarbons as blowing agents, and maintained insulating properties when formulated with increased amounts of water.