Aqueous portland cement precursors comprising salts or...

Details Aqueous portland cement precursors comprising salts or... Aqueous portland cement precursors comprising salts or...

C - Chemistry, Metallurgy

04

B

261/56.4

C04B 7/00 (2006.01) C04B 35/00 (2006.01)

Patent

CA 1049679

ABSTRACT The amount of water required for processing wet process portland cement slurries is sharply reduced by adding to the slurry from 0.01 to 0.2 weight per cent, based on slurry solids, of a water-soluble salt of a styrene-maleic anhydride copolymer having a mole- cular weight of 1000 to 5000. The copolymer contains from 33 to 50 mole per cent of maleic anhydride and from 50 to 67 mole percent of styrene. The sodium salt is the preferable salt for use in the process.

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