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. 17, 2009
Filed:
May. 29, 2002
Anthony Jay Dias, Houston, TX (US);
Andy Haishung Tsou, Houston, TX (US);
David Yen-lung Chung, Bellaire, TX (US);
Weiqing Weng, Houston, TX (US);
Anthony Jay Dias, Houston, TX (US);
Andy Haishung Tsou, Houston, TX (US);
David Yen-Lung Chung, Bellaire, TX (US);
Weiqing Weng, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The present invention includes blends of a halogenated elastomer such as a butyl rubber or an interpolymer of, on one embodiment, a Cto Cisomonoolefin, a para-methylstyrene and a para-(halomethylstyrene), the interpolymer having been pre-mixed with an exfoliating compound and clay, the entire blend forming a nanocomposite in one embodiment. The clay may or may not have undergone an additional exfoliating treatment prior to blending with the halogenated elastomer. The interpolymer/clay mixture forms a distinct phase in the nanocomposite blend of the invention. The blend of the invention has improved air barrier properties and is suitable as an air barrier.