Patent ID: 8399552

Claim:
A lightweight finish composition comprising: a) lightweight aggregate wetted out by the combination of an alkali metal phosphate (AMP) and an alkylolammonium salt of a polyfunctional polymer (ASPP) wherein the AMP is present in an amount of from about 0.05% to about 3% and the ASPP is present in an amount of from about 0.05% to about 3% by weight of the lightweight finish composition, wherein the total amount of ASPP and AMP utilized is less than about 4.5 weight percent of the lightweight finish composition, with the proviso that if the total amount of ASPP and AMP is greater than about 3 weight percent of the lightweight finish composition, the ratio of ASPP to AMP or the ratio of AMP to ASPP is greater than about 3:1; and, b) a resin dispersion or emulsion, wherein the combination of the ASPP and the AMP 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.