Pigment dispersants having anionic functionality for use in...

Details Pigment dispersants having anionic functionality for use in... Pigment dispersants having anionic functionality for use in...

2005-07-19

2005-07-19

Cain, Edward J. (Department: 1714)

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...

C524S804000, C524S812000

Reexamination Certificate

active

06919402

ABSTRACT:
The present invention provides a compound having anionic functional groups that is useful as a pigment dispersant in waterborne coating compositions, particularly in anodic electrocoat compositions. The compound comprises an acrylic backbone having a stabilizing substituent and a plurality of anionic groups. The anionic groups result from the incorporation of a plurality of acid groups into the acrylic backbone followed by reaction with organic amine.

REFERENCES:
patent: 4663385 (1987-05-01), Chang et al.
patent: 6075089 (2000-06-01), Jaeger et al.
patent: 6160048 (2000-12-01), Uyeda et al.

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