Cement dispersion agent

C - Chemistry – Metallurgy – 04 – B

Patent

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402/100, 261/56.

C04B 24/22 (2006.01)

Patent

CA 1271879

Abstract of the Disclosure A hydraulic cement composition is effectively dispersed with use as a dispersion agent of a reaction product obtained by oxidizing and polymerizing a condensate between formaldehyde and a naphthalenesulfonic acid salt or an alkyl- naphthalenesulfonic acid salt to have a constitutional unit derived by cutting of the methylene group, that derived by hydroxyzation and condensation polymerization and that derived by the oxidation and the ring-opening of the naphthalene ring.

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