Bis-amide linked rosin acid derivatives

Details Bis-amide linked rosin acid derivatives Bis-amide linked rosin acid derivatives

1990-08-23

1992-06-02

Welsh, Maurice J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524262, 524274, 530221, C08L 702

Patent

active

051187400

ABSTRACT:
The present invention relates to bis-amide linked rosin acid derivatives which are useful as a rubber additive. In one embodiment, the amide linked rosin acid derivative may serve as a total or partial replacement for antiozonants. The bis-amide linked rosin acids are prepared by reacting abietic acid and/or dehydroabietic acid with a diamine under amidation conditions.

REFERENCES:
patent: 2510063 (1950-06-01), Bried
patent: 3313754 (1967-04-01), Logan
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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