Cure system for open steam curing of mineral-loaded chlorobutyl

Details Cure system for open steam curing of mineral-loaded chlorobutyl Cure system for open steam curing of mineral-loaded chlorobutyl

1990-03-05

1991-03-05

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...

C08C 1926, C08C 1922

Patent

active

049978896

ABSTRACT:
There is disclosed an improved method for open steam curing of mineral-loaded elastomers. It has been discovered that use of a vulcanization agent comprising a mixture of an alkyl phenol disulfide and a guanidine compound provides a synergistic curing system that is superior over the use of either component alone. The improved curing system of the present invention is particularly suited for the open steam curing of mineral-loaded chlorobutyl compounds. The cure system may be used in addition to zinc oxide and results in excellent states of cure as determined by tensile elongation and hardness measurements.

REFERENCES:
patent: 3865763 (1975-02-01), Feniak
patent: 3968062 (1976-07-01), Ecsedy
W. Warrach and Don Tsou, "A Curative for Chlorobutyl Rubber 3-Methyl-Thiazolidine-Thione-2" Elastomerics, Nov. 1984, pp. 26-29.

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