Eastman-kodak Company

Eastman Chemical Company

Other

Westlake Longview Corporation

Thomas Allen Puckette

Gerald Wayne Phillips

Jerome Leonard Stavinoha

Thomas James Devon

Jerome L Stavinoha

Gerald W Phillips

Jeffrey James Vanderbilt

Damon Ray Billodeaux

Charles Edwan Sumner, Jr

Brent Alan Tennant

Jerome Leonard Stavinoha, Jr

Garrett Clements Luce

Robert Thomas Hembre

Kenneth Alan Dooley

Clyde Neal Clubb

John L Dawes

Jonathan Michael Penney

Daniel Latham Terrill

Ginette Struck Tolleson

Lionel A Banda

Gregory O Nelson

Jerry C Dobbs

The disclosure relates to the efficient preparation of aromatic hydrocarbons useful as intermediates for di-, tri-, tetra- and poly-dentate organophosphorus ligands having value in particular as hydroformylation catalysts. The use of triarylphosphine halide catalysts have been found to be more efficient in forming these intermediates by the use of excess triarylphosphine in an amount beyond what is required to form a coordination complex.

Efficient catalyst for the formation of polyaryl hydrocarbons suitable as precursors for polydentate organophosphorus catalyst ligands

A new stable, catalytically active, tetradentate organophosphorus modified rhodium hydroformylation catalyst has been discovered that is capable of producing aldehyde products with a high linear/branched product ratio from linear olefins. The tetradentate organophosphorus modifier is a tetrasubstituted 2,2',2&#x2033;,5&#x2032;-tetramethyl-1,1&#x2032;:4&#x2032;-1&#x2033;-terphenyl, whereby, each methyl group has one hydrogen substituted by an R, R&#x2032;-diorganophosphine moiety. The R, R&#x2032; may comprise aromatic, alkyl, arylalkyl and alkylaryl groups. The precursor 2,2&#x2032;,2&#x2033;,5&#x2032;-tetramethyl-1,1&#x2032;:4&#x2032;,1&#x2033;-terphenyl hydrocarbon may be prepared from para-xylene and toluene derivatives.

Stable hydroformylation catalyst for preparation of high N/Iso ratio aldehyde product

A liquid phase hydrogenolysis of acetal compounds, such as cyclic acetals and cyclic ketals, is disclosed. The acetal compounds are fed to a reaction zone and reacted in the presence of a noble metal catalyst supported on a carbon or silica support to make hydroxy mono-ether compounds in high selectivity, without the necessity of using acidic co-catalysts such as phosphorus containing acids or stabilizers such as hydroquinone.

Production of hydroxy ether hydrocarbons by liquid phase hydrogenolysis of cyclic acetals or cyclic ketals

Catalyst compositions of alumina supports containing palladium and nickel are selective in a vapor phase hydrogenolyzis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products.

Nickel modified catalyst for the production of hydroxy ether hydrocarbons by vapor phase hydrogenolysis of cyclic acetals and ketals

Catalyst compositions of palladium supported on alumina or zirconium oxide supports having low or no silicon dioxide contents and having a specific surface area or modified with alkali, alkaline earth, or phosphine oxide compounds are selective in a vapor phase hydrogenolysis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products.

Catalysts for the production of hydroxy ether hydrocarbons by vapor phase hydrogenolysis of cyclic acetals and ketals

A vapor phase hydrogenolysis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products using a supported noble metal catalyst. The hydrogenolysis reaction can be carried out in the vapor phase and in the absence of a polyhydroxyl hydrocarbon co-solvent.

Production of hydroxy ether hydrocarbons by vapor phase hydrogenolysis of cyclic acetals and ketals

Catalyst compositions of alumina supports containing palladium and nickel are selective in a vapor phase hydrogenolysis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products.

Disclosed are processes for the preparation of glycolaldehyde in which formaldehyde is contacted with carbon monoxide and hydrogen in the presence of a rhodium catalyst and a solvent containing at least one N,N-dihexylbutyramide. The glycolaldehyde product is recovered by extraction with water. The process provides high selectivity to glycolaldehyde and efficient separation of hydroformylation products from the solvent and rhodium catalyst.

Process for the preparation of glycolaldehyde

Epoxide stabilization of fluorophosphite-metal catalyst system in a hydroformylation process

A catalyst and process for preparation of dihydroxy esters from specified hydroxy aldehydes is disclosed. In one embodiment, a catalyst liquid is provided which comprises from 10 percent to 60 percent magnesium salt of a specified alkanoic acid or acids, and from 90 percent to 40 percent of a particular alkanoic acid or acids, the molar ratio of alkanoic acid to magnesium salt being from about 1.5 to 20.3. The catalyst solution or liquid contacts or is contacted with a specified hydroxy aldehyde under suitable reaction conditions to form the desired dihydroxy ester. In another embodiment, dihydroxy esters are derived from specified hydroxy aldehydes by first forming a magnesium catalyst containing liquid by reacting magnesium or magnesium oxide, under suitable conditions, with a suitable alkanoic acid or acids, the acid or acids being provided in excess in specified molar ratios. The magnesium salt-alkanoic acid liquid produced is then employed as a catalyst liquid to convert the respective hydroxy aldehyde under suitable reaction conditions to form the desired dihydroxy ester.

Process of using a soluble magnesium catalyst for preparation of

Soluble magnesium catalyst for preparation of dihydroxy esters

Disclosed is a process for the preparation of alkali metal diarylphosphide compounds wherein at least one of the aryl radicals is substituted with an alkyl group. Also disclosed is the preparation of alkyl(diaryl)phosphine compounds which are obtained by the reaction of the alkali metal diarylphosphide compounds with alkyl halide alkylating agents.

Process for the preparation of lithium diarylphosphides and alkylated

Disclosed are bis-phosphine compounds having the general formula ##STR1## wherein: each of A.sup.1, A.sup.2, A.sup.3 and A.sup.4 is an arylene radical wherein (i) each phosphorus atom P is bonded to a ring carbon atom of A.sup.1 and A.sup.2 and to a ring carbon atom of A.sup.3 and A.sup.4, (ii) A.sup.1 and A.sup.2, and A.sup.3 and A.sup.4 are bonded to each other by ring carbon atoms and (iii) each of the residues ##STR2## constitutes a 5-membered ring; each of A.sup.5 and A.sup.6 is an arylene radical wherein A.sup.5 and A.sup.6 are bonded to each other and to residues R.sup.1 --C--R.sup.2 and R.sup.3 --C--R.sup.4 by ring carbon atoms and R.sup.1 --C--R.sup.2 and R.sup.3 --C--R.sup.4 are connected to each other through a chain of 4 carbon atoms; and

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Longview, TX, United States of America

Thomas James Devon