Compagnie Generale Des Etablissements Michelin

Jessica McDowell

Xavier Saintigny

Constantine Khripin

Etienne Munch

Anne-Frédérique Salit Salit

Anne-Frédérîque Salit

Anne-Frédérique Salit

Didler Vasseur

Rubber compositions having a modified rubber component selected from a modified polybutadiene rubber, a modified styrene-butadiene rubber, or combinations thereof, the modification being with a functional group having a hydrogen bond acceptor atom. Such functional group may be selected from a pyridine, a pyrrolidone, an ether, a ketone or an epoxide, the rubber composition having a Tg of between &#x2212;80&#xb0; C. and &#x2212;110&#xb0; C. The rubber composition may include an efficient plasticizing resin, which when included in a mixture consisting of the modified rubber component and 67 phr of the efficient plasticizing resin, causes a Tg of the mixture to be at least 14&#xb0; C. higher than the Tg of the modified rubber component. The rubber composition may described as having the hydrogen bond acceptor atom located at least two covalent bond lengths or alternatively three covalent bond lengths from a backbone of the modified rubber component.

Functionalized rubber composition

Rubber compositions and articles made from such rubber compositions that are based upon a cross-linkable elastomer composition, the cross-linkable elastomer composition comprising, per 100 parts by weight of rubber (phr) between 70 phr and 100 phr of an epoxidized rubber component selected from an epoxidized polybutadiene rubber (eBR), an epoxidized styrene-butadiene rubber (eSBR), or combinations thereof, wherein the epoxidized rubber component has a Tg of between &#x2212;80&#xb0; C. and &#x2212;110&#xb0; C. and an epoxy-function content of between 1 mol % and 25 mol %. Such rubber compositions may further include between 30 phr and 150 phr of a plasticizing resin, silica and a coupling agent that is a monohydroxysilane polysulfide having a form (Formula I) wherein radicals R, identical or different, are hydrocarbon groups, radicals R', identical or different, are divalent linking groups and x is equal to or greater than 2. 

Epoxidized rubber compositions

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Greenville, SC, United States of America

Jessica McDowell