B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/81
B60C 1/00 (2006.01) C08L 9/00 (2006.01) C09J 123/28 (2006.01)
Patent
CA 1318842
Abstract of the Disclosure TIRE COMPOUNDS CONTAINING SYNDIOTACTIC-1,2-POLYBUTADIENE The subject invention discloses the use of syndiotactic-1,2-polybutadiene in the supporting carcass and/or innerliner of a tire. The incorporation of syndiotactic-1,2-polybutadiene into rubber compositions which are utilized in the supporting carcass or innerliner of tires greatly improves the green strength of those compositions. The incorporation of syndiotactic-1,2-polybutadiene into halogenated butyl rubbers which are utilized as innerliner compositions also greatly improves the scorch safety of such compositions. The subject invention more specifically discloses a pneumatic rubber tire which comprises a circumferential rubber tread, a supporting carcass therefor, two spaced beads, two rubber sidewalls connecting said beads and an innerliner; wherein said supporting carcass is comprised of from 1 to 25 phr of syndiotactic-1,2-polybutadiene having a melting point which is within the range of 120°C to 190°C and at least one rubber selected from the group consisting of polyisoprene, styrene-butadiene rubber, and polybutadiene rubber.
576524
Maly Neil Arthur
Marinko Mark Andrew
Sandstrom Paul Harry
Smart & Biggar
The Goodyear Tire & Rubber Company
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