Surface-modified micaceous particulates having improved dispersi

Details Surface-modified micaceous particulates having improved dispersi Surface-modified micaceous particulates having improved dispersi

1991-11-15

1993-12-14

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523212, 428405, C08K 906

Patent

active

052703525

ABSTRACT:
Compounds useful for improving the dispersibility of micaceous particulates in aqueous-based coating compositions comprise urethanes or ureas which are the reaction products of silylalkyl or silylaryl isocyanates with alcohols, amines, polyether alcohols or amine-terminated polyethers. The compounds may also be the reaction products of silylalkyl- or silylarylamines with half-blocked diisocyanates which are themselves the reaction products of a diisocyanate with an alcohol, amine, polyether alcohol or amine-terminated polyether.
Micaceous particulates which have been surface modified by reaction with these compounds, as well as coating compositions comprising such surface-modified micaceous particulates, and coated substrates are also disclosed.

REFERENCES:
patent: 4062693 (1977-12-01), Berger
patent: 4184880 (1980-01-01), Huber et al.
patent: 4435220 (1984-03-01), Watanabe et al.
patent: 4482389 (1984-11-01), Franz et al.
patent: 4509988 (1985-04-01), Bernhard
patent: 5013770 (1991-05-01), Carpenter et al.

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