Claims
- 1. A pneumatic tire having a rubber component made from a rubber composition comprising
(a) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (b) 1 to 50 phr of a dendrimer.
- 2. The pneumatic tire of claim 1 wherein said dendrimers have a functionally active terminal moiety selected from the group consisting of carboxyl, vinyl, aryl, aziridenyl, oxazolinyl, haloalkyl, oxiranyl, hydroxy, isocyanato, amine, carboxylic ester moieties, trialkoxysilane, acrylate, methacrylate and polyethylene oxide.
- 3. The pneumatic tire of claim 1 wherein said dendrimer is selected from the group consisting of polyamidoamine dendrimers, polyether dendrimers, polysulfide dendrimers, polyaminosulfide dendrimers, carbosilane based dendrimers, hydrocarbon and polysiloxane dendrimers.
- 4. The pneumatic tire of claim 1 wherein said dendrimer is made via the polycondensation of cyclic anhydrides with diisopropanolamine.
- 5. The pneumatic tire of claim 1 wherein the number of generations range from 2 to 12.
- 6. The pneumatic tire of claim 1 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, carboxylated rubber, EPDM, silicon-coupled star-branched polymers, tin-coupled star-branched polymers and mixtures thereof.
- 7. The pneumatic tire of claim 1 wherein from 0.5 to 20 phr of a sulfur containing organosilicon compound is present and is of the formula:
- 8. The pneumatic tire of claim 1 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.
- 9. The pneumatic tire of claim 1 wherein said tire is selected from the group consisting of race tires, passenger tires, aircraft tires, agricultural, earthmover, off-the-road and truck tires.
- 10. The pneumatic tire of claim 1 where said tire is a radial.
- 11. A pneumatic tire of claim 1 wherein said rubber component is selected from the group consisting of tread, sidewall, apex, chafer, sidewall insert, wirecoat and innerliner.
- 12. The pneumatic tire of claim 11 wherein said component is a tread.
Parent Case Info
[0001] The Applicants hereby incorporate by reference prior U.S. Provisional Application Ser. No. 60/222,723, filed on Aug. 3, 2000.
Provisional Applications (1)
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Number |
Date |
Country |
|
60222723 |
Aug 2000 |
US |