Novel pigment grinding vehicles

Details Novel pigment grinding vehicles Novel pigment grinding vehicles

1975-11-12

1977-07-12

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25D 1306

Patent

active

040352757

ABSTRACT:
It has been found that quaternary onium (e.g., ammonium, sulfonium, and phosphonium) salt group-containing epoxy resins are particularly useful as grinding media in preparing stable pigment disperions useful in water-dispersible coating systems, for example, electrodepositable compositions. The resins are prepared by reacting a material selected from the group consisting of amine salts, phosphine-acid mixtures, and sulfide-acid mixtures with a 1,2-epoxy group containing material wherein a ratio of at least about 0.4 equivalents of quaternary onium groups are produced per equivalent of epoxy group initially present. Preferably, the system contains at least a small amount of polyoxyalkylene glycol.

REFERENCES:
patent: 3793278 (1974-02-01), De Bona
patent: 3799854 (1974-03-01), Jerabek
patent: 3839252 (1974-10-01), Bosso et al.
patent: 3894922 (1975-07-01), Bosso et al.
patent: 3925180 (1975-12-01), Jerabek
patent: 3937679 (1976-02-01), Bosso et al.
patent: 3947339 (1976-03-01), Jerabek et al.

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