Method of manufacturing devulcanized rubber using high temperatu

Details Method of manufacturing devulcanized rubber using high temperatu Method of manufacturing devulcanized rubber using high temperatu

1996-12-18

2000-10-17

Henderson, Christopher

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

Synthetic resins

Treating polymer containing material or treating a solid...

523307, C08C 1908

Patent

active

061334138

ABSTRACT:
Devulcanized rubber in which sulfuric crosslinking bonds are cut and which contains carbon black particles having very small diameters. Vulcanized rubber of discarded products is devulcanized by heating it at a temperature of 180.degree. C. --350.degree. C. and applying a shearing pressure of 10-150 kg/cm.sup.2 thereto. Reclaimed rubber products are manufactured by vulcanizing and molding, into desired shapes, a material made of only devulcanized rubber in which sulfuric crosslinking bonds are cut and which contains carbon black particles having very small diameters or a material made of the devulcanized rubber mixed with virgin unvulcanized rubber.

REFERENCES:
patent: 2461192 (1949-02-01), Banbury

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