Stable automotive aqueous metallic-flake tint dispersion

Details Stable automotive aqueous metallic-flake tint dispersion Stable automotive aqueous metallic-flake tint dispersion

1994-05-27

1995-11-14

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106403, C09C 162

Patent

active

054662869

ABSTRACT:
A stable, air-dry, low-VOC waterborne metallic flake pigment dispersion containing an aqueous carrier, film-forming binder and metallic-flake pigment and having a solids content of about 10-30% by weight; wherein the metallic surface is passivated with a hydrophobically-modified aliphatic organic phosphate ester which is subsequently combined with an aqueous resin binder to stabilize the metallic flakes against long-term settling, gassing, floating, and reagglomeration of flake particles. The VOC of the resulting dispersion is about 2.5 to 3.5 lbs/gallon (minus water) and contains metallic flake pigments in a pigment-to-binder weight ratio of about 10/100 to 50/100. The dispersion can be used neat as a bright metallic waterborne base coating or combined with other colored dispersions and other compatible resinous materials.

REFERENCES:
patent: 4350535 (1982-09-01), Ishijima et al.
patent: 4453982 (1984-06-01), Wilfinger et al.
patent: 4565716 (1986-01-01), Williams, Jr. et al.
patent: 4762568 (1988-08-01), Nakamura et al.
patent: 5011533 (1991-04-01), Kuwajima et al.
patent: 5057156 (1991-10-01), Kuwajima et al.

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