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:
Feb. 18, 1992
Filed:
Dec. 04, 1990
Applicant:
Inventors:
Henry W Bonk, Wallingford, CT (US);
Augustin T Chen, Cheshire, CT (US);
Benjamin S Ehrlich, League City, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
525457 ; 525458 ;
Abstract
High molecular weight thermoplastic polyurethane resins with narrow molecular weight distribution and good physical properties are prepared by regenerating thermally degraded and/or off-grade thermoplastic polyurethane resins. The regenerated high molecular weight thermoplastic polyurethane resins do not present any processing difficulties inherent to high molecular weight resins.