Use of comb-branched copolymers in gypsum compositions
AssigneeArco Chemical Technology, L.P.
InventorsSteven A. Schwartz, Mohamad A. Dehyar
Life of this patent
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Abstract
A gypsum composition suitable for use in the manufacture of construction materials is provided. The gypsum composition includes gypsum, water, and a dispersant formulation comprising an acrylic/polyether comb-branched copolymer. A method of making a gypsum composition is also provided. The method includes mixing together, in any combination, gypsum, water, and a dispersant formulation comprising an acrylic/polyether comb-branched copolymer. A wallboard is provided including two sheets of board paper, and a gypsum core between the sheets of board paper.
Claims22
A gypsum composition suitable for use in the manufacture of construction materials, said gypsum composition comprising:
- a) gypsum;
- b) water;
- and
- c) a dispersant formulation comprising an acrylic/polyether comb-branched copolymer.
A method of making a gypsum composition suitable for use in the manufacture of construction materials, said method comprising mixing together, in any combination:
- a) gypsum;
- b) water;
- and
- c) a dispersant formulation comprising an acrylic/polyether comb-branched copolymer.
Dependencies are inferred from the claim text.