Waterproof gypsum molded product

Details Waterproof gypsum molded product Waterproof gypsum molded product

1982-01-29

1983-10-25

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106111, C04B 1114

Patent

active

044117019

ABSTRACT:
The present invention provides a gypsum molded product having excellent waterproof properties without impaired strength by adding alkaline metal alkylsiliconates or phenylsiliconates together with calcium hydroxide or calcium oxide to gypsum; poly(.alpha.,.beta.-unsaturated carboxylic acid) may be used in combination with the above, if desired. According to the present invention, the preparation of a gypsum molded product, particularly a gypsum from desulfurization of exhaust gas, is contemplated.

REFERENCES:
patent: 4040850 (1977-08-01), Kyri et al.
patent: 4042409 (1977-08-01), Tereda et al.

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