Amide linked rosin acid derivatives

Details Amide linked rosin acid derivatives Amide linked rosin acid derivatives

1989-09-25

1991-02-26

Kight, III, John

Chemistry: natural resins or derivatives; peptides or proteins;

Natural resins or derivatives

Rosin or derivative used as starting material in process, or...

524270, 524272, 524274, 530211, C09F 104

Patent

active

049962957

ABSTRACT:
The present invention relates to amide linked rosin acid derivatives which are useful as a total or partial replacement for extender or processing oil in rubber formulations. The amide linked rosin acid derivatives improve Strebler adhesion in rubber compositions and also significantly reduce rheometer t25 and t90 values. The amide linked rosin acids are prepared by reacting abietylamine or dehydroabietylamine with abietic acid or dehydroabietic acid under amidation conditions.

REFERENCES:
patent: 2510063 (1950-06-01), Bried
patent: 4324710 (1982-04-01), Davis et al.
patent: 4419470 (1983-12-01), Davis et al.
patent: 4566997 (1986-01-01), Satoh et al.
patent: 4775496 (1988-10-01), Wideman et al.

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