Calcium sulphate hemihydrate plaster

Details Calcium sulphate hemihydrate plaster Calcium sulphate hemihydrate plaster

C - Chemistry, Metallurgy

04

B

261/73

C04B 28/14 (2006.01) C04B 40/06 (2006.01) C09K 8/46 (2006.01) E21D 20/02 (2006.01) F16B 13/14 (2006.01)

Patent

CA 1113513

ABSTRACT Calcium sulphate hemihydrate plaster slurry comprising a set-inhibiting agent, for example, a polymer or copolymer of an acid having the formula R1HC=CR2-COOH wherein R1 and R2 are hydrogen or methyl. The invention also includes a method of rapid setting of the inhibited slurry by mixing therewith a promoter comprising a salt of iron, copper or aluminium.

285342

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