Nalco Company

Ecolab USA Inc.

Championx USA Inc.

Heinrich Enoch Bode

Xiaojin Harry Li

Jing Wang

John David Kildea

Pious V Kurian

Michael Robert St John

Mei Liu

Paul J Zinn

Robert M Lowe

Ryan Chester

Christopher Steven Popeney

En-Wei Lin

Mark Dennis Levitt

Charles Allen Hodge

Amanda Ruth Blattner

Peter E Reed

Jasbir S Gill

Nathan Daniel Peitersen

Claire Lucille Notermann

William J Andrews

Nestor U Soriano, Jr

Rangarani Karnati

Frederick J Swiecinski

Mario Roberto Rojas

Zachary Wilson Logan

Jinfeng Wang

Joanna L Shih

Kerry C Brinkman

Shayan Moghadam

Martin David Biggs

Warren T Gillenwater

Paul Joseph Zinn

Copolymers and compositions containing copolymers having advantageous viscosity, friction reduction, dissolution, pH-stability, and temperature-stability are provided. These copolymers can be used as rheology modifiers for oil field applications.

Fast dissolving, water soluble, hydrophobically-modified polyelectrolytes

Compounds, compositions and methods of use thereof are provided, the compounds comprising a hydrophobically modified polyelectrolyte comprising a nonionic monomer, an ionic monomer, a monomer having the structure of Formula 1, and a monomer having the structure of Formula 2, wherein R, R, R, R, R, and Rare independently hydrogen, unsubstituted alkyl, substituted alkyl, carbonyl, carboxyl, aryl, or alkaryl; Ris linear Cto Calkyl; Ris branched Cto Calkyl; Xand Xareindependently &#x2014;C(O)O&#x2014;, &#x2014;C(O)NR&#x2014;, &#x2014;O&#x2014;, &#x2014;C(R)O&#x2014;, -arylene-, -arylene-C(R)O&#x2014;, -arylene-C(R)N(R)&#x2014; or -arylene-C(R)N(R)&#x2014;; Rand Ris independently hydrogen or a Cto Calkyl; and wherein a molar ratio of the monomer of Formula 1 to the monomer of Formula 2 is from about 1.5:1 to about 15:1. The compounds are useful as viscosifying agents in oil and gas applications.

Salt-tolerant, fast-dissolving, water-soluble rheology modifiers

Disclosed are cloud point depressants and methods of making and using them. The disclosed cloud point depressants comprise copolymers of an unsaturated anhydride polymerized with alkyl &#x3b1;-olefins and then contacted with a phenyl alkyl alcohol or alkyl phenol alkoxylate, fatty alcohol and primary or secondary fatty amine to provide a cloud depressant reaction product. When the disclosed reaction products are added to middle distillate fuels or blends of middle distillate fuels with biodiesel, the cloud point depressants inhibit the precipitation of waxes and/or biowaxes in the fuels and the fuels exhibit reduced precipitation, gelling, and/or crystallization when subjected to low or cold temperatures.

Cold flow additive for middle distillate fuels

Rheology modifying agents and methods of modifying the rheology of a slurry are disclosed. Methods for the prevention of fouling and methods for monitoring the rheology of a slurry are also provided. The slurry can be a lime slurry or a magnesium oxide slurry, for example. The rheology modifying agent can be polymer-grafted nanocrystalline cellulose. The rheology modifying agent can optionally include other components, such as a chelating agent.

Nanocrystalline cellulose and polymer-grafted nanocrystalline cellulose as rheology modifying agents for magnesium oxide and lime slurries

In the mining process, linear, branched, hyperbranched or dendrimeric polyols or mixtures thereof are employed as process stabilization aids for aqueous solutions and, or suspensions of metal salts. A specific application area of the polyols is the stabilization of bauxite liquor in the Bayer process of producing alumina from bauxite.

Use of polyols as scale control reagents in the mining processes

Disclosed herein are inversion systems and methods of diluting w/o lattices including about 10 wt % to 80 wt % of a water soluble polymer. Using the inversion systems and methods described herein, dilution of w/o lattices is carried out in a single step to form dilute lattices having 10,000 ppm or less polymer; the dilute lattices form polymer solutions with no further addition of mixing force or water. The solution viscosities of the polymer solutions obtained using the systems and methods of the invention are at least about 80% of solution viscosity expected in the absence of shear.

Apparatus and method for inverting polymer latices

The invention provides a method of efficiently producing branched, cyclic glycerol-based polyols with a co-product as anti-biodegrading agent from inexpensive readily available glycerol monomer. The method involves polymerizing glycerol or glycerol with at least another monomer to multiple other monomers in the presence of particular amount of a strong base as the catalyst under a particular distillation environment. The polyol produced by the inventive method is beneficial of reducing scales in Bayer liquid for aluminum production process and improving brightness of coated paper substrates without greening effect.

Production and composition of glycerol based polyols

A hyperbranched polyglycerol is employed as a process stabilization aid of pregnant liquor of a Bayer process of producing alumina from bauxite. The hyperbranched polyglycerol has a molecular weight of from about 1,000 to about 1,000,000.

Alkaline spray-on cleaners that can be delivered by pump or pressurized gas aerosol spray have been made with reduced choking mists are disclosed. The cleaning composition comprises the use of anti-mist components consisting of large anionic copolymer comprised of acrylamide and AMPS (acrylamide-sodium 2-acrylamido-2-methylpropane sulfonate), and polyethylene oxide polymers that create non-Newtonian solutions. The composition also includes a surfactant, and a source of alkalinity.

Reduced misting alkaline cleaners using elongational viscosity modifiers

The invention provides methods and compositions for improving the production of alumina hydrate. The invention involves adding one or more cross-linked ethylsulfonated polysaccharides to liquor or slurry in the fluid circuit of the production process. The one or more polysaccharides include cross-linked dextran or cross-linked dihydroxypropyl cellulose. The various polysaccharides can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.

Cross-linked ethylsulfonated dihydroxypropyl cellulose

The current invention includes a composition having stability additives of selected inorganic salts and/or organic incorporated into an aldehyde-functionalized polymer product. The stability additive can be post added to the finished polymer product, added to the reaction vessel prior to inducing functionalization of the non-functionalized polymer, or added at any stage during the functionalization reaction. Methods for forming the composition and using the composition to produce a cellulosic fiber-based medium are also disclosed.

Aldehyde-functionalized polymers with enhanced stability

The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scleroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.

Recovery of alumina trihydrate during the Bayer process using scleroglucan

The invention provides methods and compositions for improving the production of alumina hydrate. The invention involves adding one or more polysaccharides to liquor or slurry in the fluid circuit of the production process. The one or more polysaccharides can be a cross-linked polysaccharide (such as cross-linked dextran or cross-linked dihydroxypropyl cellulose). The various polysaccharides can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.

Recovery of alumina trihydrate during the bayer process using cross-linked polysaccharides

The invention provides methods and compositions for improving the production of alumina. The invention involves adding a product containing one or more polysaccharides to liquor within the fluid circuit of the production process, where one of the polysaccharides is scieroglucan. The use of scleroglucan can impart a number of advantages including at least some of: greater flocculation effectiveness, increasing the maximum effective dosage, faster settling rate. The production process can be a Bayer process.

Growing community of inventors

Aurora, IL, United States of America

Heinrich Enoch Bode