Texaco Chemical Company

Texaco Inc.

Huntsman Petrochemical Corporation

Texaco Development Corporation

Texaco Chemical Inc.

Huntsman Corporation

Jefferson Chemical Company, Inc.

Huntsman Pertochemical Corporation

Edward T Marquis

John R Sanderson

James R Machac, Jr

John F Knifton

Lewis W Watts, Jr

Susan A Woodrum

Kenneth P Keating

Robert A Meyer

George P Speranza

Howard P Klein

William A Smith

Ernest L Yeakey

Yu-Hwa E Sheu

William K Culbreth, Iii

David G Pottratz

Robert E Baldwin

Wheeler C Crawford

Robert M Gipson

John H Clements

Katty Darragas

Howard F Payton

Michael Cuscurida

John M Larkin

Mark A Mueller

Jiang-Jen Lin

Wei-Yang Su

Pei-Shing E Dai

Heinz Schulze

Jerome W Darden

Ronald L Savage

Mercy Mathai Varghese

Mike W McKinney

Harold G Waddill

Terry L Renken

Steven H Vanderpool

Kenneth G Hammond

Stanley B Cavitt

Walter H Brader, Jr

Raeda M Smadi

Martin J Plishka

Clifford L Lambert, Jr

Ralph M DiGuilio

Timothy L Lambert

Chris E Godinich

Edward Chung-Yit Nieh

Sanderson John R

Joseph C Sendra

Jonathan Lustri

A composition useful as a paint remover which may include a carbonate, a dibasic ester and a mono-ester. The paint stripping composition may also contain an organic sulfur-containing compound such as dimethyl sulfoxide (DMSO), a glycol ether, a ketone, or combination thereof. The composition may be used in a process for removing paint by applying it to a painted surface. A degreasing composition is also disclosed which may comprise a carbonate and a alkyl-substituted cyclo-alkane such as naphthene. The compositions have several important attributes, including low toxicity and high efficacy in removing paint and coatings.

Degreasing compositions

This invention concerns a composition useful as a paint remover, comprising: an organic carbonate, an alcohol, an activator, hydrogen peroxide, and water. The alcohol may be benzyl alcohol. The organic carbonate may be propylene carbonate, ethylene carbonate, or combination thereof. The activator may be an alkyl-substituted cycloalkane (naphthene), a soy oil, an alkyl soyate, or combination thereof.

Paint stripping compositions

A method of preparing hydroxyalkylcarbamates from six-membered cyclic carbonates. The method involves reacting a six-membered cyclic carbonate with anhydrous ammonia or aqueous ammonium hydroxide. The present invention also provides for hydroxyalkylcarbamates prepared from six-membered cyclic carbonates, and for coating compositions comprising hydroxyalkylcarbamates prepared according to the present invention.

Preparation of hydroxyalkylcarbamates from six-membered cyclic carbonates

Provided herein are moist towelettes useful for cleansing, among other things, hard surfaces and human skin. The moist towelettes of the invention comprise a towelette portion which is moistened with a liquid composition of matter wherein the liquid composition includes an alkylene carbonate as one of its components. According to one preferred form of the invention, the liquid composition from which the towelettes are made moist are alcohol-free. In another embodiment, a substantial portion of the alcohol in a given formulation is replaced with an alkylene carbonate component. Preferred alkylene carbonate components include propylene carbonate, butylene carbonate, and glycerine carbonate.

Advances in towelettes containing organic carbonates

Identified herein are inhibitors which may be added to the boiling pot portion of a distillation apparatus prior to or during the distillation of an alkylene carbonate. The inhibitors retard the occurrence of undesirable reactions of the alkylene carbonate with itself and impurities present in the pot, and hence greatly reduce or minimize the formation of undesirable by-products which otherwise tend to reduce overall yields of alkylene carbonate recovered by the distillation process. Higher distillation temperatures at higher pressures over the prior art are possible without attendant losses of significant amounts of recovered alkylene carbonate, which confers heretofore unseen flexibility in alkylene carbonate distillation.

Polymerization-inhibited distillation

The present invention includes methods and compositions for the removal of coatings such as paint from surfaces. The methods of the present invention are typically conducted between about 45&deg; C. and about 75&deg; C., and the compositions typically contain a carbonate, a dibasic ester, a pyrrolidine, a mono-ester. The formulations of the present invention typically exhibit a high efficacy in the removal of paint while having a low level of toxicity.

Process and formulations to remove paint and primer coatings from thermoplastic polyolefin substrates

Propylene carbonate based cleaning compositions. The compositions comprise propylene carbonate, a glycol ether, water, and an acid activator. The compositions may optionally also comprise hydrogen peroxide. The present invention also provides for a method of removing a soil from a hard surface, wherein a cleaning composition comprising propylene carbonate, a glycol ether, water, and an acid activator is applied to the hard surface. After application of the cleaning composition, the soil is removed from the hard surface without the exertion of mechanical force.

Propylene carbonate based cleaning compositions

The present invention is directed toward effective photoresist stripping compositions that are less corrosive and do not cause skin irritation. One form of the present invention is a composition useful as a photoresist remover that includes an alkylene carbonate, and one or more additional components chosen from the group that includes alkyl hydrogen peroxides, hydroxyalkyl ureas, urea-hydrogen peroxides, N-substituted morpholines and alcohols. Another form of the present invention is a composition for removing photoresist from a surface that includes an N-substituted morpholine.

Alternative photoresist stripping solutions

This invention concerns a composition useful as a paint remover, comprising: alkylene carbonate such as propylene carbonate or ethylene carbonate, hydrogen peroxide, and water, and optionally an alcohol such as benzyl alcohol. In another broad respect, this invention concerns a process for removing paint, comprising: applying a composition containing alkylene carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint. In another broad respect, this invention is a composition useful as a paint remover, comprising: dialkyl carbonate, hydrogen peroxide, and water, optionally containing an alcohol, optionally containing a glycol ether. In another broad respect, this invention is a process for removing paint, comprising: applying a composition containing dialkyl carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint. Advantageously, the composition of this invention may include a dibasic ester (DBE).

Paint and coating remover

A composition useful as a paint remover, including alkylene carbonate such as propylene carbonate or ethylene carbonate, and an alcohol such as benzyl alcohol. Also, a process for removing paint, comprising: applying a composition containing alkylene carbonate and an alcohol to a painted surface for a time and under conditions effective to reduce adhesion between the top coats and the primer or undercoat of the paint. In another aspect, this paint remover includes dialkyl carbonate and an alcohol, optionally containing a glycol ether. In another aspect, the process includes applying a composition containing dialkyl carbonate and an alcohol. This paint remover may include a thickener, a surfactant, or a corrosion inhibitor.

Paint stripper for aircraft and other multicoat systems

A method for preparing carbonates includes reacting an alkylene oxide with carbon dioxide in the presence of a catalyst and a non-protic solvent. The method further includes having the boiling point of the solvent greater than about 70 &deg; C., and removing the solvent from the reaction product. The solvent used in the various forms of the present invention can be glyme, diglyme, tetraglyme, cumene, toluene, tetrahydofuran, cyclohexanone, ethylbenzene, aromatic hydrocarbons, or ethers. The catalyst used can be a tetraalkyl ammonium halide, such as tetraethyl ammonium bromide. The alkylene oxide that can be used in the invention can include Bisphenol A, Bisphenol B, Bisphenol F, alkylene oxides that have alkyl substituent groups, alkylene oxides that have aryl substituent groups, and alkylene oxides that contain both alkyl and aryl substituent groups. An essentially solvent free carbonate can be prepared by flash removal of the solvent.

Process for the production of carbonates that melt at a high temperature

A composition comprising an organic carbonate such as propylene carbonate and O,O-diethyl-O-(2-isopropyl-4-methyl-6-pyrimidinyl)phosphorothioate, S-&lsqb;1,2-bis(ethoxycarbonyl)ethyl&rsqb;O,O-dimethylphosphorodithioate, or 6,7,8,9,10, 10-hexachloro-1,5,5 ,6,9,9 -hexahydro-6,9-methano-2,4,3-benzodioxathiepin-3-oxide, and methods thereof.

Water emulsifiable formulations

A method for the preparation of &ggr;-hydroxy ethers from cyclic organic carbonates and active-hydrogen-containing compounds in one form includes the steps of contacting an active-hydrogen-containing compound and a cyclic organic carbonate compound containing a six-membered ring, and a catalyst, running the reaction at a suitable temperature, and isolating the &ggr;-hydroxy ether as a mixture that can be purified or used directly as produced in the reaction.

Alkoxylation of 6-membered alkylene carbonates

A composition useful as a paint remover. The composition may include a carbonate, a dibasic ester and a mono-ester. The composition may also contain an organic sulfur-containing compound such as dimethyl sulfoxide (DMSO), a glycol ether, a ketone, or combination thereof. The composition may be used in a process for removing paint by applying it to a painted surface. The compositions have several important attributes, including low toxicity and high efficacy in removing paint and coatings.

Provided herein are cross-linked super absorbing polymers made by reacting a copolymer having an esterifiable acid group with a cyclic alkylene carbonate. The resulting cross-linked materials have an increased ability to retain absorbed liquids even under the influence of applied stress. Catalysts are also disclosed which are useful in promoting the reaction between the alkylene carbonate and copolymer.

Absorbent polymer modification

Growing community of inventors

Austin, TX, United States of America

Edward T Marquis