Rosinate esters of N-hydroxyphenyl maleamic acid

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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524274, 525289, C08L 2300

Patent

active

056986203

ABSTRACT:
The present invention relates to rosinate esters of N-hydroxyphenyl maleamic acid which are useful as a total or partial replacement for extender or processing oil in rubber formulations. Addition of these rosinate esters improve the modulus and tear of the vulcanizate. The rosinate esters of N-hydroxyphenyl maleamic acid are of the formula: ##STR1##

REFERENCES:
patent: 3951892 (1976-04-01), Drury, Jr. et al.
patent: 5614576 (1997-03-01), Rutherford et al.
patent: 5618883 (1997-04-01), Plamthottam et al.

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