Cutting and chipping resistant tread for heavy service pneumatic

Details Cutting and chipping resistant tread for heavy service pneumatic Cutting and chipping resistant tread for heavy service pneumatic

1985-04-12

1987-10-27

Ball, Michael

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

152209R, 524496, B60C 1100, B60C 100

Patent

active

047030798

ABSTRACT:
A pneumatic tire is produced for off-the-road use having a tread formed from a silica-free rubber tread compound consisting essentially of particular types of rubber, and at least 55 phr of a particular high structure, fine particle carbon black having a CTAB from 130-150 m.sup.2 /g, N.sub.2 adsorption of 140-160 m.sup.2 /g, a tint of 125-140%, a DBPA of 120-140 ml/100 g, and a mean particle diameter of about 24 nanometers; and, from about 4 to about 8 phr of processing oil, antioxidant/antiozonants, curing agents and activators each present in an amount less than 10 phr. The result is a tire with substantially better cutting and chipping resistance than an identically produced tire with a tread containing silica in combination with a carbon black having essentially the same mean particle diameter but lower structure, without any noticeable loss in treadwear, or with an improvement in treadwear, that is, less loss due to treadwear.

REFERENCES:
patent: 4154277 (1979-05-01), Sato et al.
patent: 4281703 (1981-08-01), Ahmad
patent: 4398582 (1983-08-01), Yuto et al.
patent: 4477621 (1984-10-01), Sato et al.

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