Scorch-safe acceleration of urethane vulcanization of unsaturate

Details Scorch-safe acceleration of urethane vulcanization of unsaturate Scorch-safe acceleration of urethane vulcanization of unsaturate

1980-06-23

1982-04-13

Hamrock, William F.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525341, C08F 834, C08F 840

Patent

active

043248705

ABSTRACT:
Improvements in scorch time of natural and synthetic rubber compositions in urethane crosslinking systems employing alkyl derivatives of dithiophosphoric acid as the scorch delay cure catalyst having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are alkyl having at least 12 carbon atoms, or connected together and forman alkylene group having at least 2 carbon atoms, and R.sub.3 is hydrogen or phenethyl.

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