Inorganic-organic composite materials and a process for...

Details Inorganic-organic composite materials and a process for... Inorganic-organic composite materials and a process for...

C - Chemistry, Metallurgy

04

B

261/78.5

C04B 24/28 (2006.01)

Patent

CA 1228374

ABSTRACT OF THE DISCLOSURE A process for producing an inorganic-organic com- position material based on gypsum and polyurethane comprising exposing calcined gypsum or anhydrite to the action of water in the presence of a polyurethane or polyurethane-urea which is dispersible in water and in the presence of up to about 20% by weight (relative to the total mixture) of an alcohol and up to about 20% by weight (relative to the total mixture) of another organic solvent, and allowing the composition to set while permitting any solvents which may be present to evaporate. The calcium sulphate may be on a textile support or the com- position may be molded into flexible shaped articles of good mechanical properties.

455625

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