Hydroxycarboxylic acid/Unsaturated aromatic hydrocarbon resin us

Details Hydroxycarboxylic acid/Unsaturated aromatic hydrocarbon resin us Hydroxycarboxylic acid/Unsaturated aromatic hydrocarbon resin us

1987-10-07

1990-05-29

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

503200, 503210, 528206, 528207, 528392, 528397, C08G 8300

Patent

active

049297104

ABSTRACT:
Hydroxycarboxylic acid derivatives of the formula ##STR1## are particularly suitable for use as color developers in recording materials.

REFERENCES:
patent: 3004953 (1961-10-01), Sonnabend
patent: 3657430 (1972-04-01), Tsung-Ying Shen et al.
patent: 3924027 (1975-12-01), Saito et al.
patent: 4357459 (1982-11-01), Runavot et al.
patent: 4701517 (1987-10-01), Daughenbaugh

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