Patent ID: 8349979

Claim:
An admixture composition comprising a calcium sulfate based binder comprising a calcium sulfate compound, and an aqueous composition, said aqueous composition comprising a) a copolymeric dispersing component; b) an antifoaming agent component; c) a surfactant component; and d) water; wherein the copolymer of component a) consists of two monomer components wherein component a 1 ) is at least one of an olefinic unsaturated mono-carboxylic acid co-monomer, an ester thereof or a salt thereof, or an olefinic unsaturated sulfonic acid compound, or a salt thereof, and component a 2 ) is a co-monomer of the formula (I) wherein R 1 is and wherein R 2 is H or an aliphatic hydrocarbon group having from 1 to 5 carbon atoms, R 3 is a non-substituted or substituted aryl group, and R 4 is H or an aliphatic hydrocarbon group having from 1 to 20 carbon atoms, a cycloaliphatic hydrocarbon group having from 5 to 8 carbon atoms, a substituted aryl group having from 6 to 14 carbon atoms or a compound selected from the group wherein R 5 and R 7 are alkyl, aryl, aralkyl or alkaryl group and R 6 is an alkylidene, arylidene, aralkylidene or alkarylidene group and p is 0, 1, 2 or 3, m and n are independently 2, 3, 4 or 5, x and y are independently an integer from 1 to 350, and z is 0 to 200.