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. 15, 2003
Filed:
Mar. 27, 2001
Applicant:
Inventors:
Thomas Clayton Forschner, Richmond, TX (US);
Wyndham Henry Boon, North Canton, OH (US);
Aisa Sendijarevic, Troy, MI (US);
Kurt Charles Frisch, late of Grosse Ile, MI (US);
David Eric Gwyn, Houston, TX (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 1/844 ; C08G 1/865 ; C08G 1/832 ; C08G 1/818 ; C08G 1/822 ;
U.S. Cl.
CPC ...
C08G 1/844 ; C08G 1/865 ; C08G 1/832 ; C08G 1/818 ; C08G 1/822 ;
Abstract
Disclosed is a new class of TPUs with improved properties, based on poly(1,3-propanediol carbonate) diol, using 10 to 55% hard segment concentration, and cured with a diisocyanate. The composition provides a broader range of mechanical and thermal properties for TPU formulations, including improvements in hardness, higher elasticity modulus, and improved softening temperature and coefficient of thermal expansion, in addition to improved clarity.