Arizona Chemical Company, LLC

Kraton Chemical, LLC

Godefridus J H Buisman

Wolfgang Pille-Wolf

Jeffrey R Warmkessel

Blaisdell Benedict Willis

Chenchy Jeffrey Lin

Yubin Wu

Provided herein are novel tire tread compositions. The tire tread compositions include a rubber, a terpene-based resin and at least one filler. The terpene-based resin comprises one terpene-based monomer such as &#x3b1;-pinene, referred to as a hompolymer, or combinations of several terpene-based monomers selected from &#x3b1;-pinene, &#x3b2;-pinene, &#x3b4;-3 carene, &#x3b2;-phellandrene and pyrolysates of &#x3b1;-pinene, &#x3b2;-pinene, &#x3b4;-3 carene, &#x3b4;-2 carene, turpentine, and combinations thereof. The terpene-based resin is generally substantially free of limonene. The terpene-based resin has a softening point of about 80&#xb0; C. to about 130&#xb0; C., a number average molecular weight (M) ranging from about 500 g/mol to about 775 g/mol and a glass transition temperature (T) of from about 38&#xb0; C. to about 81&#xb0; C. The tire tread composition having the terpene-based resin shows improvements of tan &#x3b4; at 0&#xb0;, wet grip and rolling resistance as compared with the compositions without the terpene-based resin or comprising alpha methyl styrene resin.

Tread enhancement additives

The instant invention relates to rubber compositions comprising silica, an organomercaptosilane having a bulky group and/or a polyether group bound to the silicon atom and a rosin-containing material. The instant invention also relates to tires comprising such rubber compositions, to methods of preparation of such rubber compositions or tires thereof, and to the use of rosin-containing materials for improving the Mooney viscosity and mechanical properties of rubbers comprising the same (e.g. in a tire).

Additives for rubber compositions

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Savannah, GA, United States of America

Godefridus J H Buisman