Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1994-09-29
1999-01-12
Henderson, Christopher
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525349, C08C 1920
Patent
active
058591427
ABSTRACT:
A rubber composition suitable for reinforcing beads of tires, having high hardness, high durability and high aging resistance, which comprises a rubber component containing 30 to 70% by weight of a butadiene rubber containing syndiotactic crystals, 60 to 75 parts by weight of a carbon black having a specified iodine adsorption number and a specified oil absorption, 1 to 2 parts by weight of sulfur and 2 to 4 parts by weight of a sulfenamide accelerator, respectively, per 100 parts by weight of the rubber component, wherein the total amount of sulfur and the sulfenamide accelerator is from 3 to 5 parts by weight.
REFERENCES:
patent: 5023301 (1991-06-01), Burlett
patent: 5026762 (1991-06-01), Kida
patent: 5104941 (1992-04-01), Wolpers
patent: 5341863 (1994-08-01), Sandstrom
Fukumoto Takahiro
Iizuka Toru
Koyama Kaoru
Muraoka Kiyoshige
Nakada Yoko
Henderson Christopher
Sumitomo Rubber Industries Ltd.
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