Kraton Chemical, LLC

Jeffrey R Warmkessel

Wolfgang Pille-Wolf

Blaisdell Benedict Willis

Godefridus J H Buisman

Hannes Hendrik Peter Van Erp

Jérémie Guillaume Pichereau

Godefridus JH Buisman

Blaisdell B Willis

The disclosure relates to a composition for use in a number of applications including tires. The composition comprises a blend of a rubber component, reinforcing particulate fillers, and based on 100 parts by weight (phr) of the rubber component; from about 5 phr to about 70 phr of a terpene phenol resin having a softening point temperature in the range of from about 100&#xb0; C. to about 170&#xb0; C. and having a hydroxyl value in the range from about 5 to about 30. In one embodiment, the terpene phenol resin has a number average molecular weight of from about 700 Da to about 790 Da, a weight average molecular weight of from about 930 Da to about 1090 Da, and a polydispersity index of from about 1.25 to about 1.45.

Rubber compositions containing improved tread enhancement additives and use thereof

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

Growing community of inventors

Savannah, GA, United States of America

Jeffrey R Warmkessel