Patent ID: 7538152

Claim:
A lightweight finish composition comprising: a) lightweight aggregate wetted out by the combination of an alkali metal phosphate and an alkylolammonium salt of a polyfunctional polymer wherein the alkali metal phosphate is present in an amount of from about 0.1% to about 0.9% and the alkylolammonium salt of a polyfunctional polymer is present in an amount of from about 0.1% to about 0.9% by weight of the lightweight finish composition; and b) a resin dispersion wherein the combination of the alkali metal phosphate and the alkylolammonium salt of a polyfunctional polymer provides stability to the lightweight finish composition by wetting out the lightweight aggregate such that three weeks after producing the lightweight finish composition the viscosity as measured in paste units (PU) does not measure more than about 140 paste units.