초록

This invention relates to a rubber composition comprised of at least one conjugated diene-based elastomer containing triglyceride based algae oil and to a tire with a component thereof.

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1. A rubber composition comprised of, based on parts by weight per 100 parts by weight of elastomer (phr): (A) at least one conjugated diene-based elastomer, and(B) from about 5 to about 60 phr of triglyceride ester based algae oil, wherein fatty acid components of said triglyceride ester of said al

1. A rubber composition comprised of, based on parts by weight per 100 parts by weight of elastomer (phr): (A) at least one conjugated diene-based elastomer, and(B) from about 5 to about 60 phr of triglyceride ester based algae oil, wherein fatty acid components of said triglyceride ester of said algae oil comprise: (1) about 80 to about 95 percent mono-unsaturated oleic acid component,(2) about 1 to about 5 percent di-unsaturated linoleic acid component,(3) about 2 to about 6 percent palmitic acid component,(4) about 2 to about 6 percent stearic acid component, and(C) from about 30 to about 140 phr of reinforcing filler comprised of: (1) rubber reinforcing carbon black, or(2) combination of rubber reinforcing carbon black and precipitated silica,(D) silica coupling agent reactive with hydroxyl groups contained on said precipitated silica and another different moiety interactive with carbon-to-carbon double bonds of said conjugated diene-based elastomers. 2. The rubber composition of claim 1 wherein said triglyceride ester based algae oil is exclusive of synthetic triglyceride. 3. The rubber composition of claim 1 wherein the precipitated silica is provided as: (A) a precipitated silica hydrophobated by reaction in situ within the rubber composition with a silica coupling agent reactive with hydroxyl groups on said precipitated silica and another different moiety interactive with carbon-to-carbon double bonds of said conjugated diene-based elastomers, or(B) a pre-hydrophobated precipitated silica as a precipitated silica hydrophobated by reaction of the precipitated silica with a silica coupling agent reactive with hydroxyl groups on said precipitated silica and another different moiety interactive with carbon-to-carbon double bonds of a conjugated diene-based elastomer. 4. The rubber composition of claim 1 wherein said rubber composition is free of petroleum based rubber processing oil. 5. The rubber composition of claim 1 wherein said reinforcing filler is comprised of rubber reinforcing carbon black. 6. The rubber composition of claim 1 wherein the reinforcing filler is comprised of a combination of rubber reinforcing carbon black and precipitated silica. 7. The rubber composition of claim 1 which contains petroleum based rubber processing oil blended with the rubber composition in addition to said algae oil in an amount less than 50 percent of the combination of rubber processing oil and algae oil. 8. The rubber composition of claim 1 wherein at least one of said diene-based elastomers is a functionalized diene-based elastomer which contains at least one functional group comprised of at least one of amine, siloxy, carboxyl, hydroxyl and thiol reactive with hydroxyl groups contained on said precipitated silica. 9. The rubber composition of claim 1 wherein at least one of said diene-based elastomers is a tin or silicon coupled elastomer. 10. The rubber composition of claim 9 wherein said functionalized diene based elastomers is a tin coupled styrene/butadiene elastomer. 11. A tire having a component comprised of the rubber composition of claim 1. 12. A tire having a tread comprised of the rubber composition of claim 1. 13. A tire having a tread comprised of the rubber composition of claim 2. 14. A tire having a tread comprised of the rubber composition of claim 3. 15. A tire having a tread comprised of the rubber composition of claim 4. 16. A tire having a tread comprised of the rubber composition of claim 6. 17. A tire having a tread comprised of the rubber composition of claim 7. 18. A tire having a tread comprised of the rubber composition of claim 8. 19. A tire having a tread comprised of the rubber composition of claim 9. 20. A tire having a tread comprised of the rubber composition of claim 10.