Inorganic pigments and methods for producing the pigments and aq

Details Inorganic pigments and methods for producing the pigments and aq Inorganic pigments and methods for producing the pigments and aq

1975-09-15

1977-07-19

Poer, J.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106288B, 106309, 106306, C08J 300, C08K 902, C09C 100, C08K 300

Patent

active

040366634

ABSTRACT:
Finely divided inorganic pigments having improved wetting characteristics and which may be rapidly dispersed in an aqueous medium, and methods for preparing same, are disclosed. The improved pigments comprise blends or mixtures of inorganic pigment particulates, such as calcium silicate, hydrated silica, aluminum hydrates and sodium alumino silicates, etc. and a soluble deliquescent salt, such as the sulfates, nitrates and chlorides of aluminum and other metals. The pigments are produced by dry blending mixtures of the inorganic pigment and the soluble deliquescent salt. Conventional soaking periods on the order of 12 to 24 hours are reduced to less than 2 hours by the use of the improved pigments of the invention.

REFERENCES:
patent: 2260871 (1941-10-01), Sawyer
patent: 2786777 (1957-03-01), Allen
patent: 3000749 (1961-09-01), Bachmann et al.
patent: 3009827 (1961-11-01), Deuel et al.
patent: 3291626 (1966-12-01), Shurling et al.
patent: 3790396 (1974-02-01), Fitton

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