Cognis IP Management Gmbh

Henkel Corporation

Charles M White

Dean A Oester

C William Blewett

A Fred Elsasser

Gary L Pritt

Gary Pritt

A method for improving air entrainment comprising the steps of: providing a compound selected from an amphoteric, an alkyl polyglycoside, an ester, a triglyceride, a triglyceride derivative, a fatty alcohol, an alkoxylated fatty alcohol, an alkoxylated polyhydric fatty alcohol, and mixtures thereof; dispersing the compound on a finely particulate carrier to form a treated carrier; and adding the treated carrier to a cementitious mixture is provided. A composition for improving air entrainment, including a compound selected from an amphoteric, an alkyl polyglycoside, an ester, a triglyceride, a triglyceride derivative, a fatty alcohol, an alkoxylated fatty alcohol, an alkoxylated polyhydric fatty alcohol, and mixtures thereof, wherein the compound is dispersed on an organic particulate carrier and added to a cementitious mixture, is also provided. The composition may be incorporated into a concrete structure.

Methods and compositions for improving air entrainment in cementitious mixtures

A method is provided for reducing the amount of ammonia evolved from a cementitious or pozzolanic mixture containing contaminated fly ash, including: providing fly ash contaminated with ammonia or ammonium-containing compounds; and adding a halogenated hydantoin to the contaminated fly ash, wherein upon the formation of a slurry, the halogenated hydantoin reacts with ammonia to reduce the evolution of ammonia gas from the slurry. Another method includes adding a halogenated succinimide to the contaminated fly ash, adding sodium dichloroisocyanurate to the contaminated fly ash, or adding a halogenated sulfamate to the contaminated fly ash.

Methods for reducing ammonia evolution from cementitious and pozzolanic mixtures

Sulfur and soap contaminants are removed from carboxylic acid esters by a process comprising the steps of: (1) contacting a carboxylic acid ester with an aqueous base at a temperature of from about 225&deg; F. to about 280&deg; F. while removing water to form a dry, crude ester; (2) contacting the dry, crude ester with an absorbent selected from the group consisting of silica gel, hydro-silica gel and mixtures thereof; (3) separating the absorbent from the ester.

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Cincinnati, OH, United States of America

Charles M White