Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1991-07-10
1993-06-15
Ziegler, Jacob
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
152209R, 524515, 524518, 525210, 525237, C08L 902, C08L 4700
Patent
active
052199444
ABSTRACT:
An all season tire tread rubber blend comprises about 30 to 50 parts per hundred low vinyl polybutadiene; about 25 to 60 parts per hundred natural rubber and/or synthetic polyisoprene; and about 10 to 25 parts per hundred high styrene styrene/butadiene rubber and/or other diene polymer having a glass transition temperature of about -5.degree. to about -20.degree. C. A preferred embodiment comprises about 40 parts per hundred low vinyl solution polybutadiene, about 40 parts per hundred natural rubber, and about 20 parts per hundred high styrene solution styrene/butadiene. Tires employing the tire tread rubber of this invention exhibit improved wet and winter traction and superior abrasion resistance and treadwear without increased rolling resistance.
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patent: 4192366 (1980-03-01), Scriver et al.
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Bhakuni, et al., Encyclopedia of Polymer Science and Engineering, 2nd ed., vol. 16, John Wiley, 1989, pp. 838, 842.
Eirich, F., Science and Technology of Rubber, Academic Press, New York, 1978, pp. 374, 375.
Rubber Technology Handbook, Hofmann, W., Oxford Press, 1989, p. 128.
Mroczkowski Tomasz S.
Patkar Shailesh D.
Scriver Richard M.
Pirelli Armstrong Tire Corporation
Ziegler Jacob
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