Method of preparing a vulcanizing compound and utilization there

Details Method of preparing a vulcanizing compound and utilization there Method of preparing a vulcanizing compound and utilization there

1991-05-28

1992-04-14

Henderson, Christopher

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

Synthetic resins

Processes of preparing a desired or intentional composition...

525349, C08L 9500

Patent

active

051049163

ABSTRACT:
A vulcanization composition for elastomers, the compostion comprising, by weight: 0.5 parts to 3 parts mercaptobenzothiazole, 0.5 parts to 3 parts tetramethylthiuram disulfide, 3 parts to 5 parts zinc oxide, 1 part to 3 parts stearic acid, 1 part to 4 parts anti-oxidant, and 1 part to 5 parts vulcanization agent constituted by 0% to 100% sublimated sulfur, 0% to 75% sulfur donor selected from thiurams and dithiomorpholines, and 0% to 50% sulfenamide, with the weight ratio of sulfenamide to sulfur donor lying in the range 1/3 to 1. The invention is applicable to vulcanizing a three-sequence copolymer of styrene-butadiene-styrene mixed with bitumen.

REFERENCES:
Journal of Applied Polymer Science, vol. 23, pp. 185-200 (1979).

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