Chemtek, Incorporated

Basf Corporation

Other

Sewerkote LLC

Michael Gates Kinnaird

Jay G Otten

Edward J Parker

Wolfgang Hoelderich

Thirumurti L Narayan

Gerhard D Wolf

John J Burke

Robert R Roelofs

Ronald E Greenough

Ronnie Steven Padgett

David Linith Rigsbee

John Clifton Mason

Jochen Houben

Vernon Leon Tyson

Compositions for cleaning concrete or other cementitious substrates that do not contribute to the alkali-silicate reaction are provided, and methods for use thereof The cleaning compositions comprise lithium salts such as lithium hydroxide, lithium oxide and/or lithium carbonate, at least one surface active agent, optionally a glycol ether and/or hydrocarbon solvent, a sodium-free or substantially sodium-free chelating agent or agents and/or one or more adjuncts at least partially contributing to the useful properties of the composition.

Sodium-free, lithium-containing concrete cleaning compositions and method for use thereof

This invention relates to a method of protecting concrete sewer pipe, manholes, lift stations, pump stations, wet wells, sewage treatment plant components, and septic tanks and/or septic tank components comprising coating said concrete items by rolling, spraying, or brushing on a coating system consisting essentially of a primer, intermediate coat and topcoat. Each coat is a polymeric coating prepared in situ by combining a hardener with a prepolymer formulation. The pepolymer is an amine-containing material, resulting in a polyurea-based coating. The chief advantages of the coating are that it can be applied utilizing conventional, simple equipment, and the increased drying time allows for excellent adhesion on the substrate. Also, it is a tough elastomeric material resistant to attack by water or the sulfuric acid microbial metabolic end-product.

Protective system for concrete sewer applications

An improved self-cleaning polish is obtained by adding a wax to an oil either pre-heated, or then subsequently heated, with stirring. Subsequently, and optionally, water and/or an acetic acid source, preferably vinegar, is added, either before or after partly or completely cooling the heated wax/oil mixture. Special-purpose additives may be added, such as salts, abrasives, suspending aids, preservatives, emulsifiers, colorants, fragrances, etc. However, no solvent other than the oil is necessary, a decided improvement over existing technology.

Polish compositions and method of use

A useful composition for protecting metal equipment from corrosion and/or other damage comprises 1) gilsonite, which is a mined asphalt; and/or some other natural-origin or naturally-derived resin, 2) a naturally-derived solvent such as d-limonene and/or other terpenes, and 3) a naturally-derived non-drying plasticizer such as fatty acid triglycerides. 4) Optionally, additives for controlling rheology, viscosity, lubricity, corrosion rates etc. can be added to obtain specific properties which may be desirable. The invention also relates to a method of preventing corrosion or other damage to metal equipment by applying the above-mentioned coating to the equipment by spraying, rolling and/or brushing.

Protective coating compositions containing natural-origin materials, and method of use thereof

A method of preventing tar, asphalt and related material from sticking to paving equipment involves spraying a release agent concentrate diluted with water contemporaneously with spraying, utilizing a carbonator pump capable of about 1 gallon per minute pumping rate at about 200 psi, an appropriately-sized motor, a pushbutton momentary contact switch, a timing relay capable of switching the motor on and running it for about 1-2 minutes, a spray gun and appropriately-sized nozzle, appropriate fittings and hoses, and such optional ancillary devices as solenoid valves, particulate screens and freeze protection. The major advantages of the instant invention are that it is simple and economical to build, very robust, and is capable of delivering a good spray pattern at relatively high concentrations of viscous release agents.

Method and apparatus for preventing asphalt from sticking to paving equipment

A method of preventing asphalt and tar from sticking to paving equipment comprises diluting a concentrate with about four to about 50 parts water to one part concentrate and spraying, rolling or brushing the diluted concentrate on the equipment, coating the dilution on equipment prior to its coming into contact with tar or asphalt. The concentrate comprises a fatty acid amide or mixture of fatty acid amides, a fatty acid neutralized with an excess of an alkyl- or alkanol- or mixed-type amine or ammonia, and an optional solvent or solvents. The chief advantages of the instant invention are that the dilutions are viscous, and so prevent the diluted material from running off of the equipment prior to contact with tar or asphalt, and that the diluted material leaves a lubricious film on the surface even after all the water in the diluted film has evaporated.

Method of releasing asphalt from equipment using surfactant solutions

This invention relates to a method for cleaning bituminous asphalt- and tar-coated equipment, using combinations of alkyl esters with terpene cosolvents and/or surfactants. The specific invention is the use of ester solvents in combination with terpene solvents, optionally with emulsifiers and other additives. The combination of the two is found surprisingly to exhibit the excellent solvency of terpene solvents, but with the slower evaporating rate and higher flashpoint properties of ester solvents.

Method of cleaning tar and asphalt off of paving or other equipment

Stable urea group-containing dispersions are obtained in situ by reacting carbon dioxide with an amine in the presence of a continuous phase carrier. These amine/carbon dioxide condensation adducts dispersed in the carrier are employed in the formation of polyurethane foams, polyurethane elastomers and coatings, and polyurethane microcellular foams.

Poyurea based dispersions, foams prepared therefrom, and a process for

Alkoxylates of active hydrogen compounds having a peaked molecular weight distribution are prepared by reacting the active hydrogen compound with an alkylene oxide of from 2 to 4 carbon atoms using iron oxides as alkoxylation catalysts.

Alkoxylation of active hydrogen compounds

An alkyl and/or aryl silyl ether capped polyether surfactant useful in cleaning compositions. The polyether is described in conjunction with automatic dishwashing detergent composition having improved chlorine bleach stability comprising:

Stable alkyl and/or aryl silyl ether capped polyether surfactants for

Cleaning compositions, especially liquid detergent compositions containing chlorine bleach, are disclosed. The compositions include a chlorine bleach stable nonionic surfactant which is a mixture of the formula

Sterically hindered polyether polyols as chlorine bleach stable

A composition of matter comprising a metal pyrethione salt, an amine having the following formula

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Durham, NC, United States of America

Michael Gates Kinnaird