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, 2002
Filed:
Oct. 26, 2000
Applicant:
Inventors:
Zoran S. Petrovic, Pittsburg, KS (US);
Ivan J. Javni, Pittsburg, KS (US);
Assignee:
Pittsburg State University, Pittsburg, KS (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L 7/504 ;
U.S. Cl.
CPC ...
C08L 7/504 ;
Abstract
An isocyanate prepolymer for application in polyurethanes. The prepolymer is synthesized by combining epoxidized natural oils with isocyanates and a catalyst. The prepolymer contains oxazolidone rings that will react with polyols to form polyurethane. The invention provides a method of using a renewable resource in a fast, simple process to produce substantial amounts of isocyanate prepolymer and a minimum of homopolymers.