Fire resistant gypsum board containing calcium sulfate...

Details Fire resistant gypsum board containing calcium sulfate... Fire resistant gypsum board containing calcium sulfate...

C - Chemistry, Metallurgy

04

B

261/71

C04B 11/00 (2006.01) C04B 14/36 (2006.01) C04B 28/16 (2006.01) E04C 2/04 (2006.01)

Patent

CA 1225670

ABSTRACT FIRE RESISTANT GYPSUM BOARD CONTAINING CALCIUM SULFATE ANHYDRITE Increased fire resistant gypsum board core formulations and plaster fireproofing formulations are provided by incorpor- ating calcium sulfate anhydrite into the formulations. Particu- larly fire resistant effects are achieved with a fibrous form of calcium sulfate anhydrite, and with blends of calcium sulfate anhydrite II in particulate or fibrous form. Optionally, the formulations may contain either small amounts of textile glass fiber, wollastonite or vermiculite.

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