Union Carbide Chemicals & Plastics Technology Corporation

Union Carbide Corporation

Union Carbide Chemicals and Plastics Company, Inc.

Davidson Textron Inc.

Chinsoo Stephen Lee

Kenneth L Hoy

David R Bassett

Kenneth A Nielsen

Richard W Wegman

William J Bartley

David McNeill Somerville

James A Condron

Marc D Donohue

David Michael Minahan

Richard A Engelman

Jeffrey Dale Goad

Hendrik F Bok

Glenn A Taylor

Fungau Ho

Maureen M Lein

Charles W Glancy

Barry Brent Fish

David Michael Anthony Minahan

Paul Frank Bryan

Gary F Pelletier

Raymond Edwin Rooks

This invention relates in part to a processes for the conversion of a feedstock stream comprising carbon monoxide and hydrogen to a product stream comprising at least one of an ester, acid, acid anhydride and mixtures thereof. This invention also relates in part to processes for converting an alcohol and/or ether feedstock to oxygenated products, e.g., esters, acids, acid anhydrides and mixtures thereof. The processes and catalysts are especially suitable for the production of acetic acid and methyl acetate from a synthesis gas feedstock or from an alcohol and/or ether feedstock.

Processes for preparing oxygenates

This invention relates in part to a processes and catalysts for the conversion of a feedstock comprising carbon monoxide and hydrogen to a product stream comprising at least one of an ester, acid, acid anhydride and mixtures thereof. This invention also relates in part to processes and catalysts for converting an alcohol, ether and/or ether alcohol feedstock to oxygenated products, e.g., esters, acids, acid anhydrides and mixtures thereof. The processes and catalysts are especially suitable for the production of acetic acid and methyl acetate from a synthesis gas feedstock or from an alcohol, ether or ether alcohol feedstock.

Process for preparing oxygenates and catalysts therefor

Processes for preparing oxygenates and catalysts therefor

The present invention is directed to methods and apparatus for effectively proportioning a mixture of compressible and non-compressible fluids, wherein the resulting mixture has an almost constant density. The present invention is particularly useful for admixing supercritical fluids with polymeric coating compositions for various spray applications.

Method and apparatus for proportioning and mixing non-compressible and

A process for manufacturing a metallized part using the island coating method, including spray depositing a primer layer, basecoat layer, or combined primer/basecoat layer. Each layer contains an increased amount of film forming polymer by using liquid CO.sub.2 as a supplemental carrier along with a reduced amount of organic solvent carrier thereby reducing waste disposal costs and environmental concerns. Further, this modified island coating system can be used to deposit layers of 1.5 to 2.0 mils thick and maintain the aesthetic properties of the metallizing island coating system at a reduced cost and with minimal variability among parts.

Reduced solvent island coating system

A process for inhibiting chemical reactions of a fluid functionally reactive organic material by mixing it with supercritical fluid ('SCF') or near supercritical fluid, especially carbon dioxide maintained under supercritical fluid conditions. The process includes the ability to restrain a chemical reaction that occurs otherwise between functionally compatible organic molecules by the inclusion of supercritical fluid, particularly CO.sub.2, with the molecules, so that the reaction can be made to occur according to a predetermined but different from normal pattern.

Chemical reaction suppression system

A liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid sprays. The coatings compositions are sprayed by passing the composition under pressure through an orifice into the environment of the substrate.

Liquid spray application of coatings with supercritical fluids as

This invention is directed to improved spraying apparatus for coating substrates with a coating material and supercritical fluid which apparatus is provided with various features, either alone or in combination, to prevent undesirable premature cooling of the coating mixture which might detrimentally affect the final coating on the substrate; to prevent undesirable depressurization of supercritical fluid contained in the coating mixture which remains in the spray gun after spraying has been stopped; and/or to desirably provide the ability to mix the components of the coating mixture directly in the spray gun. Methods for utilizing these features in the spraying apparatus of the present invention are also disclosed.

Apparatus and methods for application of coatings with supercritical

A process is provided for the preparation of a mixture of parylene dimers wherein the distribution of dimers within the mixture is predetermined by the proper selection of halogenated and non-halogenated 2,2-paracyclophane starting material. Since the dimers are free of alpha-halogens, the formation of environmentally undesirable acid halides during the deposition of parylene films and coatings is avoided. Since the dimers are useful in the preparation of inert, transparent, conformal coatings of parylene, desirable chemical and/or physical properties can be imparted to such coating by formation of a dimer mixture of a predetermined composition. The parylene film properties, composition and deposition conditions will be different by varying dimer distribution.

Process for the preparation of mixed parylene dimers free of

A liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid sprays.

Supercritical fluids as diluents in liquid spray application of coatings

A method is described for producing dispersions of polyurea and the like in polyols of increased stability by polymerizing an amine and an isocyanate in the presence of an aminoalcohol, typically an aminopolyol, having the following formula: ##STR1## wherein A and A' are individually connective atoms which may be same or different, and are selected from the group consisting of carbon and oxygen or combinations thereof with hydrogen atoms or the like satisfying the valences; B is a member selected from the group consisting of nitrogen, NR, R being alkyl or aryl, or CR', R' being hydrogen, alkyl or aryl; D is a member selected from the group consisting of ##STR2## wherein a has a value of one to four; X is a member selected from the group consisting of OH, NH.sub.2 or H; X' is a member selected from the group consisting of H or NHR' where R' is hydrogen, alkyl or aryl; n and d are individually integers of 0 to 10 and the sum of n and d is at least one and does not exceed 10; s is either 0 or 1; y is an integer of 0 to 4; and m is an integer of at least about 16, with the proviso that when B is nitrogen and either n or d is zero, X and X' are not both H. The dispersions are useful for the production of polyurethane foams.

Aminopolyol stabilizers

A process is provided for the preparation of the dimer, dichloro-[2,2]paracyclophane, which is useful as the starting material for the deposition of conformal parylene coatings employed, for example, in the electronics industry for the protection of various sensitive electronic components.

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Charleston, WV, United States of America

Chinsoo Stephen Lee