Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Raymond Stubblefield

Olivier Piffard

Xavier Saintigny

William Marshall Thompson

Anthony Derbin Cato

Elizabeth L Hotaling

Rubber compositions and articles made such rubber compositions having at least 80 phr of a styrene-butadiene elastomer modified with a functional group that is capable of interacting with a silica reinforcing filler and having a glass transition temperature of between &#x2212;60&#xb0; C. and less than &#x2212;40&#xb0; C. The rubber compositions may also include an effective amount of a plasticizing system having a plasticizing resin and a plasticizing liquid, wherein the effective amount of the plasticizing system provides the rubber composition with a shear modulus G* measured at 60&#xb0; C. of between 0.9 MPa and 1.5 MPa and a Tg of between &#x2212;35&#xb0; C. and &#x2212;15&#xb0;. The filler for the rubber compositions is silica and there is further a curing system.

Tire thread with low Tg rubber

A tire tread formed at least in part from a rubber composition that is based upon a cross-linkable rubber composition that may include between 50 phr and 90 phr of a first highly unsaturated elastomer being middle chain functionalized with an aminoalkoxysilane group and having a Tg of between &#x2212;108&#xb0; C. and &#x2212;45&#xb0; C. and between 10 phr and 50 phr of a second highly unsaturated elastomer being end-chain functionalized with a silanol group and having a Tg of between &#x2212;108&#xb0; C. and &#x2212;10&#xb0; C. The rubber composition may further include between 50 phr and 150 phr of a silica filler and a plasticizing system comprising between 5 phr and 120 phr of a plasticizing resin having a Tg of at least 25&#xb0; C. and between 0 phr and 60 phr of a plasticizing liquid.

Functionalized polymer blends for improved wear

Growing community of inventors

Greenville, SC, United States of America

Raymond Stubblefield