Cement dispersion agent
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United States of America Patent
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-
Jul 26, 1988
Grant Date -
N/A
app pub date -
Oct 31, 1986
filing date -
Nov 7, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A hydraulic cement composition is effectively dispersed with the use as a dispersion agent of a reaction product obtained by oxidizing and polymerizing a condensate of formaldehyde with a naphthalenesulfonic acid salt and/or an alkylnaphthalenesulfonic acid salt to produce a constitutional unit which is derived by elimination of a methylene group, hydroxyzation and condensation polmerization, or oxidation and ring-opening of the naphthalene ring.
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