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. 04, 1991
Filed:
Aug. 31, 1990
Applicant:
Inventors:
Cung Vu, Columbia, MD (US);
Norman E Blank, Heidelburg, DE;
Assignee:
W. R. Grace & Co.-Conn., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 66 ; 25218222 ; 4273881 ; 4273883 ; 427393 ; 4284231 ; 4284251 ; 4284255 ;
Abstract
The component polyol/polyisocyanate composition useful in forming an abrasion resistant polyurethane automotive undercoating. The polyol component is unmodified castor oil or castor oil modified with cyclohexanone-formaldehyde condensate. The modified castor oil may be further modified by adding the reaction product of neopentyl glycol and adipic acid. The polyisocyanate component comprises an MDI-based mixture containing polyisocyanate prepolymers based on alkylene oxides.