Esters Of Cyclohexane Polycarboxylic Acids As Plasticizers In Rubber Compounds
AssigneeBridgestone Corporation
InventorsTerrence E. Hogan, William J. Corsaut
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Abstract
It has been discovered that the use of a plasticizer, an ester of a cyclohexanepolycarboxylic acid, especially a 1,2-cyclohexanedicarboxylic acid ester, that is environmentally non-toxic, can replace environmentally unfriendly phthalate plasticizers, such as dioctyl phthalates used in vulcanizable rubber compositions, especially for tires, on a one to one weight basis (phr) without sacrificing beneficial rubber properties.
Claims16
A vulcanizable rubber composition comprising:
- (a) an elastomer;
- (b) a reinforcing filler comprising a selection from the group consisting of silica, carbon black, and mixtures thereof;
- (c) a plasticizer comprising a 1,2-cyclohexanedicarboxylic acid ester;
- and
- (d) a cure agent.
A pneumatic tire including at least one component comprising a vulcanized rubber compound made from a vulcanizable rubber composition that comprises an elastomer;
- a reinforcing filler comprising a selection from the group consisting of silica, carbon black, and mixtures thereof;
- a plasticizer comprising 1,2-cyclohexane-dicarboxylic acid ester;
- and a cure agent.
Dependencies are inferred from the claim text.