Ecolab USA Inc.

Nalco Company

Ondeo Nalco Company

Alan Smith

Weiguo Cheng

Yulin Zhao

Jun Li

Qing Rao

Jochen Friedrich Knauer

James J Svarz

Aleksandar Todorovic

Stephen B Ashton

José Rafael Hernández Carucci

Qing Long Rao

Qinglong Rao

Gilles Corbel

Aleksander Todorovic

An apparatus for preparing and dispensing a flocculant solution to dewatering an aqueous process stream includes a mixing pump, a maturing tank, and a feeding unit. The mixing pump mixes the flocculant solution and builds up a pressure onto the flocculant solution. The maturing pressure tank is fluidly connected with the mixing pump, so that the pressurized diluted flocculant solution is led from the mixing pump into the maturing pressure tank and matured therein under pressure that is above atmosphere pressure.

Apparatus for preparing and dispensing a flocculant solution to dewatering an aqueous process stream

A process for flocculating filler particles in water is provided. The process comprises adding a flocculant to a mixture comprising filler particles and water, wherein the flocculant has a reduced specific viscosity ('RSV') of from about 5 dL/g to about 16 dL/g, a viscosity average molecular weight of from about 1,200,000 to about 7,500,000, and a cationic charge of from about 5 mol % to about 50 mol %. Flocs formed by flocculation of the filler particles and the flocculant have a median particle size of from about 10 &#x3bc;m to about 150 &#x3bc;m. The filler is not precipitated calcium carbonate alone. The flocs provided by the process are useful in increasing ash content of a paper product.

Papermaking process of increasing ash content of a paper product and a paper product obtained by the same

Methods of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength, and enhancing filler retention in a papermaking process are disclosed. The methods improve the efficiency of drainage aids, wet web strength aids, and/or wet strength aids by coating at least some of the filler particles with a material that prevents the filler materials form adhering to a those additives.

Method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in papermaking

The invention provides a method of improving dewatering efficiency, increasing sheet wet web strength, increasing sheet wet strength and enhancing filler retention in a papermaking process The method improves the efficiency of drainage aids or wet web strength aids or wet strength aid by coating at least some of the filler particles with a material that prevents the filler materials form adhering to a those additives. The drainage additive or wet web strength additive or wet strength aid holds the cellulose fibers together tightly and is not wasted on the filler particles.

Aqueous defoamer composition

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Sandbach, United Kingdom

Alan Smith