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:
Mar. 09, 1999
Filed:
Aug. 16, 1996
Tyler Housel, Lansdale, PA (US);
Ira S Katuran, Elkins Park, PA (US);
Rocco Burgo, Cherry Hill, NJ (US);
Oleg I Bleyman, Holland, PA (US);
Inolex Investment Corporation, Wilmington, DE (US);
Abstract
Polymeric acid functional polyols are provided which are the reaction product of at least one hydroxyl-terminated polymer and a nonaromatic polyanhydride. Polymeric acid functional polyols are also provided which are the esterification reaction product of a first component which is at least one of an aliphatic dicarboxylic acid, a polyol and mixtures thereof and a second component which has at least two unhindered functional groups and at least one hindered carboxylic acid functional group. Methods of making such polymeric acid functional polyols by reacting a hydroxyl-terminated polymer and a nonaromatic dianhydride or by the esterification reaction of the first and second component described herein are also included in the invention. Further, hydrophilic polyurethane foams and water borne polyurethanes formed from the reaction of these polymeric acid functional polyols with polyisocyanates are also provided.