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:
Jul. 04, 1978
Filed:
Mar. 11, 1976
Applicant:
Inventors:
Henry W Bonk, Wallingford, CT (US);
Benjamin S Ehrlich, Cheshire, CT (US);
Joseph Pleckaitis, North Haven, CT (US);
Assignee:
The Upjohn Company, Kalamazoo, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528 49 ; 2641 / ; 264D / ; 528 76 ;
Abstract
The processing temperatures of thermoplastic polyurethane elastomers are reduced, and the extrudability and the sensitivity to degradation by shear and by moisture are improved, by including a minute proportion (from 0.0005 to 0.05 equivalents, per equivalent of isocyanate) of a monohydric aliphatic alcohol in the reaction mixture (diisocyanate, polymeric diol and difunctional extender) employed to prepare thermoplastic polyurethane elastomers by the one-shot procedure.