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. 29, 1985
Filed:
Jun. 01, 1984
Applicant:
Inventors:
James M O'Connor, Clinton, CT (US);
Wilhelm J Schnabel, Branford, CT (US);
Assignee:
Olin Corporation, Cheshire, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
524591 ; 4273855 ; 528 67 ; 528 73 ;
Abstract
Uretdione group-containing polyurethane oligomers are prepared by reacting a hydroxyl-terminated prepolymer with a dicarboxylic acid anhydride. The hydroxyl-terminated prepolymer is the reaction product of a uretdione group-containing organic polyisocyanate with an isocyanate reactive hydrogen atom-containing compound. The polyurethane oligomers are useful in the preparation of aqueous polyurethane dispersions, which can be used as adhesives in making molded wood products, and as coatings and other useful products.