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:
Aug. 03, 2010
Filed:
Mar. 10, 2006
Weiqing Weng, Houston, TX (US);
David Y. Chung, Bellaire, TX (US);
Anthony Jay Dias, Houston, TX (US);
Yuan-ju (Ray) Chen, Torrence, TX (US);
Alan A. Galuska, Glen Gardener, NJ (US);
James R. Ayers, Highlands, TX (US);
Weiqing Weng, Houston, TX (US);
David Y. Chung, Bellaire, TX (US);
Anthony Jay Dias, Houston, TX (US);
Yuan-Ju (Ray) Chen, Torrence, TX (US);
Alan A. Galuska, Glen Gardener, NJ (US);
James R. Ayers, Highlands, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
A branched isobutylene-styrenic elastomer with a broad molecular weight distribution is disclosed comprising an interpolymer of an isoolefin monomer as isobutylene, a styrenic monomer such as p-methylstyrene, and a multiolefin such as divinylbenzene. The elastomer has improved green strength, relaxation characteristics, and processability in melt processing, while retaining excellent aging characteristics and barrier properties, and can be used in a blend with a linear isobutylene-p-alkylstyrene elastomer to improve processability of the linear elastomer. Also disclosed are a method for processing the linear elastomer with an effective amount of the branched elastomer to improve processability, and nanocomposites, curable compositions, cured compositions and useful articles formed from the branched elastomer and the linear-branched elastomer blends.