Nalco Chemical Company

Nalco Company

Ondeo Nalco Company

James J Svarz

Prasad Y Duggirala

Gary S Furman, Jr

Alan Smith

Gilles Corbel

Ryan A Gabel

Grady E Worley

Methods of increasing the yield of tall oil soap from a black liquor are provided. In an embodiment, the method comprises adding a separation aid to the black liquor. The separation aid comprises alkyl alcohol alkoxylates of formula RO[(CHCHCHO)(CHCHO)]M and combinations thereof, wherein R is straight or branched alkyl of about 8 to about 22 carbon atoms; x is 1 to about 20; y is about 20 to about 80 and M is H or an alkali metal.

Additives for increasing the separation yield of tall oil soap from black liquors

This invention is a method of reducing the resin content of chemical pulps comprising heating wood chips in an aqueous alkaline medium in the presence of an effective deresinating amount of an alkyl alcohol alkoxylate of formula RO[(CHCHCHO)(CHCHO)]M wherein R is Cto Calkyl; x is 1&#x2013;50; y is 0&#x2013;100 and M is H or an alkali metal, a cooking liquor comprising sodium hydroxide and sodium sulfite and the alkyl alcohol alkoxylate and a deresinated pulp prepared according to the method.

Method of deresinating pulp using alkyl alcohol alkoxylate surfactants

A method of dewatering an aqueous cellulosic pulp slurry comprising adding to an aqueous slurry of washed cellulosic pulp an effective dewatering amount of a mixture of one or more nonionic surfactants and one or more anionic surfactants.

Method of dewatering pulp

Aqueous defoamer composition

The present invention provides an antifoam emulsion with improved shelf-life and a method for making same. The improved shelf-life results from dispersing a fatty alcohol dispersion in an emulsion of another liquid. To this end, the antifoam emulsion of the present invention includes an internal phase of a fatty alcohol dispersion, an emulsifier, and an external phase including a water insoluble or partially miscible liquid.

Fatty acid defoamers with improved shelf life

An antifoam/defoamer composition comprising a polyether surfactant and a polyhydric alcohol fatty acid ester. The polyether surfactant being admixed with the polyhydric alcohol fatty acid ester in a ratio in the range between 10:90 to 90:10% by weight.

Antifoam/defoamer composition

An antifoam/defoamer composition a polyether surfactant and a polyhydric alcohol fatty acid ester. The polyether surfactant being admixed with the polyhydric alcohol fatty acid ester in a ratio in the range between 10:90 to 90:10% by weight.

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Naperville, IL, United States of America

James J Svarz