Exxonmobil Chemical Patents Inc.

James Richard Ayers

Weiqing Weng

Anthony Jay Dias

Peijun Jiang

Aspy Keki Mehta

Sunny Jacob

David John Lohse

Armenag Hagop Dekmezian

Palanisamy Arjunan

Caiguo Gong

Beverly Jean Poole

Peter William Manders

Molly Westermann Johnston

Kriss Randall Karp

Carmen Neagu

David Y Chung

Alan Anthony Galuska

Yuan-Ju (Ray) Chen

Beverly J Poole

Kriss P Karp

The present invention relates to processes to produce nanocomposites. In particular, the invention relates to solution processes using organic solvents and mixtures of solvents to produce polymeric nanocomposites.

Polymeric nanocomposites and processes for making the same

This invention relates to the preparation of thermoplastic vulcanizates (TPVs) with unique morphological features, more specifically, this invention relates to a method for preparing TPV compositions wherein the mixing of plastomers and elastomers are carried out in solvent with curatives to induce cross-linking.

Solution blending process for preparing thermoplastic vulcanizates

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.

Processable branched isoolefin-alkylstyrene elastomers

A nanocomposite of a halogenated elastomer and an inorganic, exfoliated clay, suitable for use as an air barrier, is disclosed. The halogenated elastomer can be a polymer comprising Cto Cisoolefin derived units, para-methylstyrene derived units, and para(halomethylstyrene) derived units, or can be a butyl-type rubber. The nanocomposite can be formed by contacting an aqueous slurry of inorganic clay with a polymer cement while agitating vigorously to form emulsions or micro-emulsions to intimately mix the inorganic clay and the elastomer. The nanocomposite so formed has improved air barrier properties and is suitable for use as an innerliner or innertube.

Functionalized isobutylene polymer-inorganic clay nanocomposites and organic-aqueous emulsion process

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Highlands, TX, United States of America

James Richard Ayers