Rheox Inc.

Elementis Specialties, Inc.

Nl Industries

Nl Chemicals, Inc.

Elements Specialties, Inc.

Elementis Specialities Inc.

Elementis Specialties, Rheox Inc.

Edward D Magauran

Charles A Cody

David Josehph Dino

Araxi Chiavoni

Wouter Ijdo

William W Reichert

Yanhui Chen

Steven J Kemnetz

Barbara A Campbell

Claude M Finlayson

Johnny R Johnson

Jeffrey D Thompson

William Reynolds

Gabriela Barbara Ber

Kamal Said Kamal Elsayed

Mauriello D Kieke

Lawrence DiCarlo

Modasser El-Shoubary

Kamal Said Elsayed

An organoclay composition where a phyllosilicate clay is exchanged with quaternary ammonium ions having a formula of [NRRRR]wherein at least one of R, Rand Ris a mixture of branched alkyl groups.

Organoclay compositions having quaternary ammonium ion having one or more branched alkyl substituents

An oil-based drilling fluid and a method for maintaining viscosity of an oil-based drilling fluid over a temperature range of about 120&#xb0; F. to about 40&#xb0; F. The oil-based drilling fluid comprises a quaternary ammonium ion having a corresponding quaternary ammonium salt having a neat shear strength value less than 6000 lb/100 ft. The organoclay drilling fluid additive imparts a first high shear viscosity to the oil-based drilling fluid at temperatures of 40&#xb0; F. or less and imparts a second high shear viscosity to the oil-based drilling fluid at temperatures greater than or equal to 120&#xb0;, wherein the difference between the first high shear viscosity and the second high shear viscosity is less than 110%. The organoclay drilling fluid additive, further imparts a first low shear viscosity to the oil-based drilling fluid at temperatures of 40&#xb0; F. or less and imparts a second low shear viscosity to the oil-based drilling fluid at temperatures greater than or equal to 120&#xb0; F., wherein the difference between the first low shear viscosity and the second low shear viscosity is less than 50%. The quaternary ammonium salt may be selected from dimethyl dicoco ammonium salt; dimethyl dicoco ammonium chloride; dimethyl didecyl ammonium salt; dimethyl didecyl ammonium chloride and combinations thereof.

Oil based drilling fluids useful having reduced change in high shear viscosity over a wide temperature range

This invention is a process for improving the rheological properties of oil well drilling fluids particularly useful for oil-based invert emulsion types of drilling fluids. The process is particularly useful when drilling in deep water from an off-shore drilling rig. The new process uses as a rheological viscosifier, for such fluids, a composition which is a mixture of organoclays and castor wax and/or castor was type rheological additives, which when added to a drilling fluid at from about 0.5 and 5% by weight, creates an inventive drilling fluid compositions less sensitive to the variety of different and varying, very hot and very cold temperatures found in the drilling hole, and in the long stem of drilling pipe. The present invention also relates to the discovery of oil based invert emulsion drilling fluids that exhibit greater efficiency and provides more stable drilling fluid viscosity and anti-settling performance over varying temperatures when compared to conventional fluids containing organoclays. Conventional organophilic clays, when used as rheological additives in oil based invert muds, display marked viscosity increases in the mud when these muds are cooled through the temperature range found today in deep water and directional drilling, whereas muds prepared according to the present invention are dramatically more viscosity stable over the same temperature ranges. As a result, the fluids of this invention are ideal candidates for reduced temperature applications such ad deep water drilling and directional drilling. Organoclays, also known as organophilic clays, are the reaction product of smectite-type clays (most often bentonite and hectorite) quaternary ammonium compounds (also called cationic organic salts). Castor wax type rheological additives are derivative of castor oil produced by the controlled hydrogenation of castor oil.

Less temperature dependent drilling fluids for use in deep water and directional drilling and processes for providing less temperature dependent rheological properties to such drilling fluids

Quaternary ammonium compositions are described which are made in diluents based on vegetable oil such as soya bean oil. Such diluents remain as diluents in the final product and generally have a vapor pressure of 1 mm of Hg or less at 25.degree. C., and are liquid at ambient temperature. The liquid quaternary ammonium compound/diluent compositions have low toxicity and low volatile organic compound emission rates and high flash points, and can be tailored to particular applications. Such applications include use in fabric softeners, as cosmetics ingredients, deinking additives, surfactants, and reaction materials in the manufacture of organoclays.

Non-volatile quaternary ammonium compositions and their uses

Quaternary ammonium compositions are described which are made using diluents including soya bean oil, caster oil, mineral oils, isoparaffin/naphthenic and coconut oil. Such diluents remain as diluents in the final product and generally have a vapor pressure of 1 mm of Hg or less at 25.degree. C., and are liquid at ambient temperature. The quaternary/ammonium diluent compositions have low volatile organic compound emission rates and high flash points, and can be tailored to particular applications. Such applications include use a fabric softeners, cosmetics ingredients, deinking additives, surfactants, and reaction materials in the manufacture of organoclays.

Process for producing organoclays with quaternary ammonium compositions

Organoclay compositions

A process for treating wastepaper to remove oily waste and inorganic components, which comprises: (a) forming an organoclay treating composition in a wastepaper aqueous system; (b) contacting the wastepaper aqueous system with an amount of the organoclay effective to remove from the wastepaper oily waste and inorganic components; and (c) recovering paper pulp from the aqueous system. The process is effective in wastepaper treatment systems using both air flotation removal as well as systems utilizing water-washing processes.

Process for removing inorganic components that form ash on ignition and

A theological additive especially for liquid organic systems containing a castor-oil derivative with hydroxyl values below that appearing in nature. The additive may also contain clays and other extenders. The preferred derivative is castor wax. The additive largely eliminates the long term problem of seeding exhibited by paints and coatings using castor-oil derived additives while simultaneously providing improved dispersability and viscosity modifying qualities.

Rheological additive comprising derivatives of castor oil

A process for deinking wastepaper, which comprises: (a) forming an organoclay deinking agent in an aqueous system; (b) contacting ink from wastepaper in the aqueous system with an amount of the organoclay deinking agent effective to deink the wastepaper; and ( c ) recovering deinked paper pulp from the aqueous system.

Process for deinking wastepaper utilizing organoclays formed in situ

A process for deinking wastepaper with an aqueous system, which includes:

Process for deinking wastepaper with organically modified smectite clay

A present invention relates to a method of treating waste water for organic contaminants by contacting the waste water with a water dispersible organoclay consisting of the reaction product of at least one ammonium salt and at least one smectite clay, or alternatively, separately with at least one ammonium salt and at least one smectite clay wherein at least one ammonium salt contains at least one hydrophobic group and at least one ammonium salt contains at least one hydrophilic group and wherein said at least one ammonium salt in combination with said at least one smectite clay has a modified methylene blue test value of at least 25 percent sites exchanged.

Method of treating waste water for organic contaminants with water

The present invention relates a method for detackifying paint overspray comprising contacting the paint overspray with reduced cation exchange capacity smectite clays and organoclays.

Growing community of inventors

Mount Holly, NJ, United States of America

Edward D Magauran