Sulfur-containing unsaturated hydrocarbon polymer and method for production thereof, additive for rubber, rubber composition, and tire
AssigneeENEOS Materials Corporation
InventorsKeisuke Chino, Yusuke Matsuo, Makoto Ashiura
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Abstract
Provided is a sulfur-containing unsaturated hydrocarbon polymer which can improve wet grip performance and fuel efficiency of a tire in a well-balanced manner by being blended into a rubber composition for a tire. A sulfur-containing unsaturated hydrocarbon polymer of the present invention is a reaction product obtained by reacting sulfur with an unsaturated bond in a polymer of an unsaturated hydrocarbon.
Claims14
A method for producing a rubber composition comprising a step of combining a sulfur-containing unsaturated hydrocarbon polymer and a rubber component and a step of kneading the sulfur-containing unsaturated hydrocarbon polymer and the rubber component,
- wherein the sulfur-containing unsaturated hydrocarbon polymer is a reaction product obtained by reacting sulfur with an unsaturated bond of a polymer of an unsaturated hydrocarbon, the reaction product is composed only of sulfur and the polymer of the unsaturated hydrocarbon, the polymer of the unsaturated hydrocarbon is a petroleum resin comprising a norbornene skeleton, and the amount of sulfur reacted with the petroleum resin is 0.3 to 5 equivalent per unsaturated bond of the petroleum resin.
Dependencies are inferred from the claim text.