Opacification of paint

Details Opacification of paint Opacification of paint

1982-12-09

1984-10-02

Jacobs, Lewis T.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523223, 524413, C08K 716

Patent

active

044749104

ABSTRACT:
Aqueous paints are disclosed having improved hide at lowered titanium dioxide content in which the dispersed pigment is present in an amount providing a pigment volume concentration of from 20% to 80%, and in which the pigment contains from 5% to 65% of titanium dioxide, rutile, and the balance of the pigment consists essentially of pigmented vesiculated beads and opaque polymer particles in a ratio of 30/70 to 90/10. The proportion of opaque polymer particles is smaller at higher pigment volume concentrations to avoid excessive impairment of the burnish and scrub resistance, but a large gain in hide is obtained, nonetheless. Gloss paints are particularly contemplated having a pigment volume concentration of from 20% to 40%, the pigment contains from 35% to 65% of titanium dioxide, rutile, and the ratio of pigmented vesiculated beads to opaque polymer particles is 30/70 to 50/50.

REFERENCES:
patent: 3933579 (1976-01-01), Kershaw et al.
patent: 4243417 (1981-01-01), Grourke et al.

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