Method for production of aqueous dispersion of inorganic pigment

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...

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524430, 524437, 524501, 524503, 525 57, C08L 2904

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048187836

ABSTRACT:
A method for the production of an aqueous dispersion by the dispersion of an inorganic pigment such as calcium carbonate and aluminum hydroxide in an aqueous medium, which method comprises incorporating in said inorganic pigment as a dispersant a carboxyl group-containing water-soluble polymer possessing a number average molecular weight in the range of 2,000 to 80,000 and/or a water-soluble condensed phosphate and a water-soluble anionic modified polyvinyl alcohol possessing a polymerization degree in the range of 30 to 700, a saponification degree in the range of 30 to 100 mol %, and an anionic modification degree in the range of 0.5 to 20 mol %.

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patent: 4470935 (1984-09-01), Egawa
patent: 4477970 (1969-11-01), Beeman
patent: 4519920 (1985-05-01), Fukumoto
patent: 4555557 (1985-11-01), Fukumoto
patent: 4581394 (1986-04-01), Yoshida

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