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. 06, 2011
Filed:
Jun. 26, 2009
Michael Brendan Rodgers, Seabrook, TX (US);
David J. Lohse, Bridgewater, NJ (US);
Scott C. Solis, Houston, TX (US);
Rick D. Davis, Ijamsville, MD (US);
Jung Hun Lee, Seoul, KR;
Michael Brendan Rodgers, Seabrook, TX (US);
David J. Lohse, Bridgewater, NJ (US);
Scott C. Solis, Houston, TX (US);
Rick D. Davis, Ijamsville, MD (US);
Jung Hun Lee, Seoul, KR;
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
Elastomeric compositions comprising at least one Cto Cmonoolefin elastomer, at least one polyalphaolefin, and optionally at least one hydrocarbon polymer additive are disclosed. The PAO comprises oligomers of one or more Cto Calpha-olefins having a kinematic viscosity at 100° C. of 3 to 3000 cSt and a Mw/Mn of less than 4. In one aspect, the elastomeric composition may have improved flex fatigue properties and have a fatigue life of 450,000 Kc or more as measured by ASTM D 412 die C. In another aspect, an elastomeric composition may have improved impermeability and have a permeation coefficient at 40° C. of 160 cc*mm/(m−day) or less.