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US 5,901,766 AGranted
Pneumatic tire having a tread compound containing high levels of low Tg polymer and resin
AssigneeThe Goodyear Tire & Rubber Company
InventorsPaul Harry Sandstrom, Edward John Blok, John Joseph Andre Verthe
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Abstract
The present invention relates to a pneumatic tire having a tread containing (a) from 50 to 90 phr (parts by weight of rubber per 100 total parts of rubber) of a rubber which, in its uncured state, has a glass transition temperature in the range of from -80.degree. C. to -110.degree. C. and (b) from 15 to 50 phr of a resin.
Claims10
A pneumatic tire having an outer circumferential tread where said tread is a sulfur-cured composition comprising
- (a) 50 to 90 phr of a rubber which, in its uncured state, has a glass transition temperature (Tg) in the range of from -80.degree. C. to -110.degree. C.;
- (b) 10 to 50 phr of at least one rubber which, in its uncured state, has a glass transition temperature (Tg) in the range of from -79.degree. C. to +20.degree. C. and which is selected from the group consisting of cis 1,4-polyisoprene, 3,4 polyisoprene, styrene/butadiene rubber, styrene/isoprene/butadiene terpolymer rubber, solution-polymerized polybutadiene rubber, emulsion-polymerized polybutadiene, isoprene/butadiene rubber and mixtures thereof;
- and
- (c) 15 to 50 phr of a resin selected from the group consisting of hydrocarbon resins, phenol/acetylene resins, rosin-derived resins and mixtures thereof.
1 more element
Dependencies are inferred from the claim text.