Claims
- 1. A method of processing a rubber composition comprising mixing(A) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (B) 1.5 to 50 phr of a silicon coupled oligomer of the formula: where R1 and R2 are individually selected from the group consisting of wherein R3, R4 and R5 are individually selected from the group consisting of alkyls having from 1 to 4 carbon atoms; R6 is individually selected from the group consisting of from alkyls having 1 or 4 carbon atoms; w is an integer of from 30 to 1000, x is an integer of from 1 to 100, y is an integer of from 1 to 100, and z is an integer of from 1 to 100 with the proviso that the sum total of x, y and z in each R1 and R2 ranges from 3 to 100.
- 2. The method of claim 1 wherein said rubber containing olefinic unsaturation is selected from the group consisting of natural rubber, neoprene, polyisoprene, butyl rubber, halobutyl rubber, polybutadiene, styrene-butadiene copolymer, styrene/isoprene/butadiene rubber, methyl methacrylate-butadiene copolymer, isoprene-styrene copolymer, methyl methacrylate-isoprene copolymer, acrylonitrile-isoprene copolymer, acrylonitrile-butadiene copolymer, EPDM, silicon-coupled star-branched polymers, tin-coupled star-branched polymers and mixtures thereof.
- 3. The method of claim 1 wherein the silicon coupled oligomers and rubber containing olefinic unsaturation are mixed in the presence of an organic solvent.
- 4. The method of claim 1 wherein said rubber composition is thermomechanically mixed at a rubber temperature in a range of from 140° C. to 190° C. for a mixing time of from 1 to 20 minutes.
- 5. A rubber composition comprising(A) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (B) 1.5 to 50 phr of a silicon coupled oligomer of the formula: where R1 and R2 are individually selected from the group consisting of wherein R3, R4 and R5 are individually selected from the group consisting of alkyls having from 1 to 4 carbon atoms; R6 is individually selected from the group consisting of from alkyls having 1 or 4 carbon atoms; w is an integer of from 30 to 1000, x is an integer of from 1 to 100, y is an integer of from 1 to 100, and z is an integer of from 1 to 100 with the proviso that the sum total of x, y and z in each R1 and R2 ranges from 3 to 100.
- 6. The composition of claim 5 wherein said rubber is selected from the group consisting of natural rubber, neoprene, polyisoprene, butyl rubber, halobutyl rubber, polybutadiene, styrene-butadiene copolymer, styrene/isoprene/butadiene rubber, methyl methacrylate-butadiene copolymer, isoprene-styrene copolymer, methyl methacrylate-isoprene copolymer, acrylonitrile-isoprene copolymer, acrylonitrile-butadiene copolymer, EPDM, silicon-coupled star-branched polymers, tin-coupled star-branched polymers and mixtures thereof.
- 7. The composition of claim 5 wherein said composition is thermomechanically mixed at a rubber temperature in a range of from 140° C. to 190° C. for a total mixing time of from 1 to 20 minutes.
- 8. A sulfur vulcanized rubber composition which is prepared by heating the composition of claim 5 to a temperature ranging from 100° C. to 200° C. in the presence of a sulfur vulcanizing agent.
- 9. The rubber composition of claim 8 in the form of a tire, belt or hose.
- 10. A pneumatic tire having a rubber component where the rubber composition in said component is comprised of(A) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (B) 1.5 to 50 phr of a silicon coupled oligomer of the formula: where R1 and R2 are individually selected from the group consisting of wherein R3, R4 and R5 are individually selected from the group consisting of alkyls having from 1 to 4 carbon atoms; R6 is individually selected from the group consisting of from alkyls having 1 or 4 carbon atoms; w is an integer of from 30 to 1000, x is an integer of from 1 to 100, y is an integer of from 1 to 100, and z is an integer of from 1 to 100 with the proviso that the sum total of x, y and z in each R1 and R2 ranges from 3 to 100.
- 11. The pneumatic tire of claim 1 wherein said tire s selected from the group consisting of passenger tires, motorcycle tires, aircraft tires, agricultural, earthmover, off-the-road and truck tires.
- 12. The pneumatic tire of claim 1 where said tire is a radial.
- 13. A pneumatic tire of claim 1 wherein said rubber component is selected form the group consisting of a tread cap, tread base, sidewall, apex, chafer, innerliner, sidewall insert, wirecoat and ply coat.
Parent Case Info
The Applicants hereby incorporate by reference prior U.S. Provisional Application Serial No. 60/275,741, filed on Mar. 14, 2001.
US Referenced Citations (12)
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Provisional Applications (1)
|
Number |
Date |
Country |
|
60/275741 |
Mar 2001 |
US |