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. 13, 1977
Filed:
Aug. 05, 1976
Applicant:
Inventors:
Glenn R Svoboda, Grafton, WI (US);
John T Suh, Mequon, WI (US);
William L Carlstrom, West Bend, WI (US);
Gary L Maechtle, West Bend, WI (US);
Assignee:
Freeman Chemical Corporation, Port Washington, WI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08J / ; C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ; 260-23 ;
Abstract
Polyisocyanate prepolymers for use in preparing polyurethane products elastomers, adhesives and foams, are prepared by combining (1) organic polyisocyanate with (2) polyols which are the hydroxyl-terminated digestion products of (a) waste or scrap polyalkylene terephthalate polymers and (b) organic polyols. Polyurethane products resulting from the polyisocyanate prepolymers exhibit useful and unexpected properties.