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AssigneeDiamond Shamrock Chemicals Company
InventorsJohn G. Papalos, Arpad Savoly
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A dispersing agent which is (a) a condensation product of a substituted phenol sulfonic acid which is an arylphenol sulfonic acid or an aralkylphenol sulfonic acid with from about 0.5 to about 4 moles of formaldehyde per mole of substituted phenol sulfonic acid, or (b) a condensation product of (i) a substituted phenol sulfonic acid which is an arylphenol sulfonic acid or an aralkylphenol sulfonic acid and (ii) an aryl sulfonic acid with from about 0.5 to about 4 moles of formaldehyde per mole of substituted phenol sulfonic acid and aryl sulfonic acid wherein the weight ratio of substituted phenol sulfonic acid to aryl sulfonic acid is from about 0.95:0.05 to about 0.05:0.95. The dispersing agent may be used directly or reacted with a salt forming cation to obtain a salt. The condensation product is useful as a dispersing agent in hydraulic cement, mortar, concrete or the like.
A process for producing a slurry selected from the group consisting of
A cement slurry selected from the group consisting of
A hardened cement slury having improved compressive strength selected from the group consisting of
Dependencies are inferred from the claim text.