Rubber vulcanizing agents comprising reaction products of sulfur

Details Rubber vulcanizing agents comprising reaction products of sulfur Rubber vulcanizing agents comprising reaction products of sulfur

1987-10-21

1988-06-21

Page, Thurman K.

Coating processes

With post-treatment of coating or coating material

Heating or drying

10628732, 525289, 525290, 525291, 5253326, 525343, 525185, 528389, B05D 302, C08C 1920, C08G 7514

Patent

active

047525070

ABSTRACT:
Reaction products of sulfur with an unsaturated reactant selected from d-limonene, 5-ethylidene-2-norbornene, styrene, and dicyclopentadiene, reacted at a temperature above the melting point of sulfur and below 159.degree. C. until chemically combined, then further reacted above the melting point of sulfur until solidified. The resulting products serve as vulcanizing agents when compounded with rubber. The unvulcanized rubber compounds exhibit less blooming and better adhesion to a variety of substrates than rubber compositions compounded with soluble or insoluble sulfur. Vulcanizates containing the present compositions and a method for increasing the adhesion of rubber to a substrate during a vulcanization process are also disclosed.

REFERENCES:
patent: 3997355 (1976-12-01), Santucci et al.
patent: 4290816 (1981-09-01), Ludwig et al.
patent: 4333787 (1982-06-01), Erickson
patent: 4387167 (1983-06-01), Kidwell, Jr. et al.
patent: 4426453 (1984-01-01), Gillott et al.

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