Self-sealing vehicle tire and sealant composition

Details Self-sealing vehicle tire and sealant composition Self-sealing vehicle tire and sealant composition

1974-07-15

1976-02-03

Czaja, Donald E.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

156115, 428912, 260 336AQ, 260 4232, 260 4247, 260876B, 260880B, B60C 514, B60C 1700

Patent

active

039358933

ABSTRACT:
A vehicle tire is disclosed having an internal circumferential layer of self-sealing composition on an internal surface, particularly behind the tire tread. The sealant layer is initially made up of the combination of specific quantities of a high molecular weight curable butyl rubber, a low molecular weight curable butyl rubber, a liquid polybutylene tackifier, a partially hydrogenated block copolymer of styrene and a conjugated diene, carbon black and suitable curing agents for the butyl rubber components. When cured, this sealant layer effectively heals most punctures one-quarter inch in diameter or less in a vehicle tire at temperatures over the range of about - 20.degree. F. to 270.degree. F. without significant loss of air.

REFERENCES:
patent: 2765018 (1956-10-01), Connell
patent: 2818902 (1958-01-01), Schutz
patent: 3485787 (1969-12-01), Haefele et al.
Rubber World --Materials & Compounding Ingredients for Rubber (Bill Publications) (N.Y.) (1968), p. 230.

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