Preparation of gypsum compositions
AssigneeLyondell Chemical Technology, L.P.
InventorsSteven A. Schwartz, Frank J. Liotta, Jr., Edward A. Barsa
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Abstract
A gypsum composition containing a sulfonate-containing comb-branched copolymer is disclosed. The sulfonate-containing comb-branched copolymer comprises recurring units of a polyether macromonomer, an acrylic monomer, and a sulfonate monomer. The sulfonate-containing comb-branched copolymer not only increases the fluidity of gypsum slurry but also has reduced retardation on the gypsum setting.
Claims15
A gypsum composition comprising a gypsum and an aqueous solution of a sulfonate-containing comb-branched copolymer that comprises recurring units of a polyether macromonomer, an acrylic monomer, and a sulfonate monomer.
Dependencies are inferred from the claim text.