Process for the production of aqueous dispersions of pigmentary

Details Process for the production of aqueous dispersions of pigmentary Process for the production of aqueous dispersions of pigmentary

1982-03-25

1984-05-15

Higel, Floyd D.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106288B, 106288Q, 106308R, 106308B, 106308Q, 106309, 106300, 252356, C09C 136, C09C 302, C08J 300

Patent

active

044486090

ABSTRACT:
Stable high concentration aqueous slurries of pigmentary metal oxide particles having a hydrous oxide surface-treatment comprising alumina, for example alumina surface-treated pigmentary titanium dioxide, may be formed by the use of a specified combination of anionic and amine dispersants and a milling in the presence of grinding elements, for example in a sand mill, to develop suitable viscosity and gloss characteristics. The slurries may show thixotropic properties and are suitable for incorporation in vinyl silk aqueous emulsion paints.

REFERENCES:
patent: 3172772 (1965-03-01), Rowe
patent: 3567479 (1971-03-01), Portes et al.
patent: 3653936 (1972-04-01), Wolf et al.
patent: 3702773 (1972-11-01), Hall et al.
patent: 3942999 (1976-03-01), Hinley et al.

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