Rubber compounding material and composition

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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526290, 526308, 525211, 525216, C08F21014, C08L 700, C08L 900, C08L 2318

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active

049687646

ABSTRACT:
A rubber compounding material incorporating a cyclopentadiene-based pertroleum resin prepared by thermally copolymerizing 100 parts by weight of a cyclopentadiene-based feed or dicyclopentadiene-based feed with about 5 to 100 parts by weight of an .alpha.-olefin having from 6 to 16 carbon atoms at a temperature of from about 200.degree. to 300.degree. C. for a period of from about 10 minutes to 10 hours in the presence or absence of a solvent.
A rubber composition is also disclosed, composed of this rubber compounding material in combination with a diene-based polymer.
In rubber compositions for tires, the compounding material and rubber composition of the present invention greatly improve resistance to cutting and chipping of the tread.

REFERENCES:
patent: 3927144 (1975-12-01), Hayashi et al.
patent: 3987123 (1976-10-01), Lepert
patent: 4071676 (1978-01-01), Werner et al.
patent: 4330448 (1982-05-01), Iwata
European Search Report dated Oct. 16, 1989.
Translation of Japanese Kokai Pat. No. 53[1978]-98383 to Wata et al., published Aug. 28, 1978.
H. Staudinger, H. A. Bruson Ann., 447, 97, 110, (1926) (no translation).
J. Japan Pertol. Inst., 27, (1) 26 (1984) (no translation).

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