Adipic acid as a scorch inhibitor for carboxylated rubbers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524432, 524433, C08K 509

Patent

active

044355351

ABSTRACT:
Scorch (the premature crosslinking of an elastomer) is a problem that is often encountered in carboxylated rubbers in the presence of metal oxides which are used as crosslinking agents. Adipic acid can be used to greatly improve the scorch resistance of carboxylated rubbers. Adipic acid can be distributed throughout a carboxylated rubber before or after coagulation using any procedure that will result in a thorough mixing to form a rubber composition with improved scorch resistance.

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