Compositions: coating or plastic – Coating or plastic compositions – Proteinaceous material containing
Patent
1975-10-21
1977-11-22
Garvin, Patrick P.
Compositions: coating or plastic
Coating or plastic compositions
Proteinaceous material containing
106115, 106315, 106111, C04B 1122, C04B 1124, C04B 1314, C04B 1114
Patent
active
040594564
ABSTRACT:
A composition for accelerating the setting of an aqueous calcined gypsum slurry, the composition comprising finely ground calcium sulfate dihydrate and a lignosulfonate. The composition, when added to an aqueous calcined gypsum slurry, accelerates the setting process and shortens the set time period as determined by the temperature rise set test procedure. The composition is useful for making gypsum wallboard.
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Annes Erle C.
Arnold Billy G.
Daniel Thell D.
DeRooy Felix J.
Garvin Patrick P.
Kurlandsky Samuel
Roberts Kenneth E.
Robinson Robert H.
United States Gypsum Company
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