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:
Mar. 19, 2013
Filed:
May. 30, 2003
Caiguo Gong, Pearland, TX (US);
Anthony Jay Dias, Houston, TX (US);
Andy Haishung Tsou, Houston, TX (US);
Beverly Jean Poole, Houston, TX (US);
Kriss Randall Karp, Cleveland, TX (US);
Caiguo Gong, Pearland, TX (US);
Anthony Jay Dias, Houston, TX (US);
Andy Haishung Tsou, Houston, TX (US);
Beverly Jean Poole, Houston, TX (US);
Kriss Randall Karp, Cleveland, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
An embodiment of the present invention is a nanocomposite comprising a clay and an elastomer comprising at least Cto Colefin derived units; wherein the elastomer also comprises functionalized monomer units pendant to the elastomer. Desirable embodiments of the elastomer include poly(isobutylene-co-p-alkylstyrene) elastomers and poly(isobutylene-co-isoprene) elastomers, which are functionalized by reacting free radical generating agents and unsaturated carboxylic acids, unsaturated esters, unsaturated imides, and the like, with the elastomer. The clay is exfoliated in one embodiment by the addition of exfoliating agents such as alkyl amines and silanes to the clay. The composition can include secondary rubbers such as general purpose rubbers, and curatives, fillers, and the like. The nanocomposites of the invention have improved air barrier properties such as are useful for tire innerliners and innertubes.