Gypsum compositions
AssigneeIdemitsu Kosan Co., Ltd.
InventorsMitsuo Hashimoto, Toshiyuki Takyu, Masaru Inoue, Masami Takasaki, Shinho Shiho
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Abstract
A gypsum composition comprising: (A) a lightweight spherical gypsum and (B) at least one binder selected from the group consisting of a water-soluble organic polymer, a water-dispersible organic polymer, a water-soluble inorganic compound, a water-dispersion medium colloid-forming inorganic compound, a water-hardenable compound and a mixture thereof. This gypsum composition provides a gypsum mold which is lightweight and, at the same time, has great mechanical strength.
Claims13
An improved gypsum composition comprising (a) gypsum particles and (b) at least one binder for gypsum particles, the improvement comprising
- said gypsum particles being light-weight spherical gypsum formed of intertwined short gypsum fibers and having a bulk density of from 0.05 to 0.5 g/cm.sup.3.
Dependencies are inferred from the claim text.