A gypsum slurry includes water, a hydraulic component including stucco and
a polycarboxylate dispersant. The dispersant has two repeating units
wherein the first repeating unit is an olefinic unsaturated
mono-carboxylic acid repeating unit or an ester or salt, and the second
repeating unit is a vinyl or allyl group bound to a polyether by an ether
linkage. The slurry can be made into a gypsum panel.