Elementis Specialties, Inc.

Rheox Inc.

Wilbur S Mardis

Charles A Cody

Wouter Ijdo

Joseph G Doolan

Fred Whitton

Mahalingam Santhanam

Daphne Benderly

Thomas Lynch

Steven J Kemnetz

Keith R McNally

James Gambino

Barbara A Campbell

Burlon C Crowley

Anthony P Ricci

Henry Basson

Jose Sanchez

Uno Kruse

Richard Henderson

Chunzhao Li

A viscosity regulating composition having a polymeric structure with an internal hydrophobic unit located within the polymer's backbone, multiple hydrophilic units, and terminal hydrophobic units. In one embodiment, the internal hydrophobic unit may have at least three linked hydrophobic segments, of the same or different hydrophobic segments, with the proviso that the multiple hydrophobic segments are not linked to each other by one or more hydrophilic linking segments, for example water-soluble, polymeric groups.

Viscosity regulating composition

A film-forming composition including a coalescent aid comprising fatty acid esters of ethylene glycol and/or propylene glycol having the formula RCOO[(EO)(PO)]H wherein RCO is a linear saturated aliphatic acyl group, or a combination thereof, having from about 6 to about 22 carbon atoms, EO is &#x2014;CHCHO&#x2014;, PO is &#x2014;CHCH(CH)O&#x2014; or &#x2014;CH(CH)CHO&#x2014; or a combination thereof, where the acyl radical is bonded to a carbon atom of the EO or PO radical, and x=0 to about 5, y=about 0 to about 5, the sum of x and y is equal or greater than 0.5, z=1 to about 5, and (x+y)z is less than or equal to 6. It is to be understood that x, y, and z are average values for the composition.

VOC-free coalescing agent

An improved thickening composition for organic systems, including paints and coatings, is described. The additive provides paints and coatings more than adequate viscosity improvement without affecting intercoat adhesion characteristics. REEXAMINATION RESULTS The questions raised in reexamination request no. 90/007130, filed Jul. 21, 2004, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U. S. C. 307 as provided in 37 CFR 1.570(e), forreexamination, or the reexamination certificate required by 35 U. S. C. 316 as provided in 37 CFR 1.997(e) forreexamination.

Rheological additives and paint and coating compositions containing such additives exhibiting improved intercoat adhesion

A method for determining degree of organoclay delamination and degree of layer alignment in a polymer organoclay nanocomposite comprising one or more infrared light spectral measurements selected from the group consisting of (A) Si&#x2014;O absorption bandwidth, (B) Si&#x2014;O absorption band intensity, (C) Si&#x2014;O absorption band area, and (D) Si&#x2014;O absorption anisotropy.

Method to assess organoclay exfoliation and orientation in organoclay/polymer composites

A clay slurry is described using smectite clay, water, and a defined phosphonate additive that is hydrolytically stable over time. The viscosity of the clay slurry remains pourable and relatively unchanged over time compared to prior art slurries. The slurry is useful to provide rheological control to paints and coatings and is particularly useful as an anti-bleed additive for concrete.

Viscosity stable smectite clay slurries

An improved thickening composition for organic systems, including paints and coatings, is described. The additive provides paints and coatings more than adequate viscosity improvement without affecting intercoat adhesion characteristics.

An improved thickening composition for aqueous systems including latex paints and coatings is described. The substantially anhydrous composition comprises in specified ratios a solid thickener polymer, and one or more surfactants. The solid thickener polymer includes associative thickeners. Associative thickener polymers include polyurethanes, polyesters, polyacrylamides, modified hydroxyethyl celluloses, alkali soluble emulsions and other chemicals. Specific surfactants utilized include dialkyl sulfosuccinates, alkyl sulfates, alpha olefin sulfonates and sulfates of ethoxylated alcohols.

Super dispersable thickening composition for aqueous systems and a

The present invention relates to improved thickening compositions, often referred to as Theological additives, used to provide viscosity control, flow, leveling and other rheological properties to clear aqueous systems such as automotive clear-coat paints and coatings. The invention hereof involves the synthesis of a new family of Theological additives by combining, through a reaction process, chemicals used to make specified polyurethane polymer compositions. These novel copolymers provides the good flow and leveling and gloss retention that polyurethane associative thickeners impart to water-based systems, without the loss of clarity that such polymers have caused in the past. Levels of the rheological thickening composition, varying between about 0.01% and about 10%, based on the total weight of the system to be thickened, have been found to be useful to create novel clear aqueous systems containing such thickening compositions.

Polyurethane thickeners useful for clear and high gloss aqueous based

A novel organophilic clay comprising the reaction product of:

Organoclay compositions manufactured with organic acid derived ester

The invention involves biopolymer/oil suspension compositions for the oil service industry, most particularly drilling and completion fluids, which provide such fluids a variety of desirable properties. Biopolymers include water soluble polymers and water swellable polymers. Such biopolymer/oil suspension compositions are essentially mixtures of biopolymers such as cellulosics in an oil medium with a specific anti-settling additive. The invention is particularly directed to providing enhanced anti-settling properties to such biopolymer/oil compositions; that is, the ability of the biopolymer/oil composition to retain the biopolymers in suspension prior to the composition being introduced into drilling and completion fluids. The invention in one embodiment is described as a liquid biopolymer-in-oil additive compositions for use in aqueous-based completion fluids, containing an agent comprising: a) one or more polyamides, and b) hydrogenated caster oils including castorwax.

Biopolymer/oil suspension compositions utilized in aqueous-based fluids

A water dispersible, modified polyurethane which is the reaction product of polyisocyanate, polyether polyol, modifying agent containing at least one pendant hydrophobic group and at least two active hydrogen moieties and capping agent. The modified polyurethane may also include a second type of modifying agent which does not have a pendant hydrophobic group. The modified polyurethane can be prepared by reacting the polyisocyanate and the polyether polyol and then adding the capping agent and finally the modifying agent with or without the second modifying agent. The modified polyurethane resists microbial attack, exhibits superior efficiency in thickening aqueous compositions under high shear conditions and achieves acceptable sag and leveling.

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Southampton, PA, United States of America

Wilbur S Mardis