Celanese Gmbh

Celanese International Corporation

William E Slinkard

Anthony B Baylis

Charles A Dalton

Tobin Jay Marks

Michael P Hughes

Carolyn Supplee

Jerry A Broussard

Edward G Zey

Peter B DeGroot

Edwards G Zey

Donald K Raff

A process for treating a composition containing a substantial proportion of trimethyflolpropane bis-monolinear formal (TMP-BMLF) or trimethylolethane bis-monolinear formal (TME-BMLF), e.g., a heavy ends residue obtained from the purification of a crude trimethylolpropane (TMP) or trimethylolethane (TME) product, wherein the composition is contacted at an elevated temperature with a strong acid catalyst, e.g., methanesulfonic acid, to produce a composition containing significantly increased amounts of TMP and trimethylolpropane monocyclic formal (TMP-MCF) or TME and trimethylolethane monocyclic formal (TME-MCF) respectively. Also disclosed is a process for reacting TMP-MCF or TME-MCF, either in substantially pure form or as present in the light ends overhead stream obtained in a finishing treatment of crude TMP or TME, with a monohydric or dihydric alcohol, e.g., ethylene glycol, in the presence of a strong acid catalyst to obtain additional TMP or TME and an acetal by-product, e.g., 1,3-dioxolane; and a process for directly reacting the TMP-BMLF or TME-BMLF present in a composition, e.g., the heavy ends residue obtained in the purification of TMP or TME, with a monohydric or dihydric alcohol, e.g., ethylene glycol, in the presence of a strong acid to obtain additional TMP or TME and an acetal by-product, e.g., 1,3-dioxolane.

Treatment of a composition comprising a trimethylolalkane bis-monolinear formal

A latex containing particles of a film-forming polymer emulsified or suspended in an aqueous medium and a coalescing solvent comprising trimethylolpropane monocyclic formal (TMPMCF) or trimethylolethane monocyclic formal (TMEMCF) is disclosed.

Latex compositions containing a trimethylolalkane monocyclic formal as a

A process for treating a composition containing a substantial proportion of trimethylolpropane bis-monolinear formal (TMP-BMLF) or trimethylolethane bis-monolinear formal (TME-BMLF), e.g., a heavy ends residue obtained from the purification of a crude trimethylolpropane (TMP) or trimethylolethane (TME) product, wherein the composition is contacted at an elevated temperature with a strong acid catalyst, e.g., methanesulfonic acid, to produce a composition containing significantly increased amounts of TMP and trimethylolpropane monocyclic formal (TMP-MCF) or TME and trimethylolethane monocyclic formal (TME-MCF) respectively.

Treatment of a composition comprising a trimethylolalkane bis-monolinear

Olefin oxidation catalysts having improved attrition resistance are produced by incorporating a substantially uniform-appearing coating of a partially calcined catalytic material onto an inert porous support containing sorbed aqueous silica sol and then completing the calcination of the catalyst. Such catalysts are useful in a variety of exothermic chemical processes, including vapor phase oxidation of olefinically unsaturated hydrocarbons to the corresponding unsaturated aldehydes, especially propylene to acrolein.

Process for the oxidation of olefinically unsaturated hydrocarbons to

The present invention provides a supported catalyst for use in a vapor phase reaction for the high yield conversion of lower aliphatic hydrocarbons such as butane to corresponding monocarboxylic acids such as acetic acid. The catalyst is prepared by the carbon monoxide reduction of a vanadium pentoxide-impregnated, inert porous carrier.

Hydrocarbon oxidation via carbon monoxide reduced catalyst

Catalysts having improved attrition resistance are produced by incorporating a substantially uniform appearing coating of completely calcined, catalytically active oxide material onto an inert porous support containing sorbed aqueous silica sol. Such catalysts are useful in the gas phase oxidation of unsaturated aldehydes to unsaturated acids, especially acrolein to acrylic acid.

Process for the catalytic conversion of olefinically unsaturated

Attrition resistant catalysts

A butene may be oxidized in the vapor phase at elevated temperatures to produce acetic acid by reacting the butene with molecular oxygen in the presence of a catalyst comprising a composition of the empirical formula:

Catalyst for the oxidation of butene

Oxidation of butene to acetic acid

A process for the reacting of methanol with carbon monoxide and hydrogen to produce increased amounts of methyl acetate, acetaldehyde and dimethyl acetal utilizing a catalyst comprising a cobalt carbonyl in complex with an organic nitrogen ligand.

Reaction of methanol with synthesis gas

The present invention provides an unsupported catalyst with superior crush strength for use in a vapor phase reaction for the high yield conversion of lower aliphatic hydrocarbons such as n-butane to corresponding monocarboxylic acids used as acetic acid. The catalyst is prepared by the reduction of a vanadium oxide containing chromium catalyst.

Oxidation of aliphatic hydrocarbons with high strength hydrocarbon

The present invention provides a highly efficient process for use in the high pressure catalytic vapor phase reaction for the high yield conversion of lower aliphatic hydrocarbons such as n-butane to corresponding monocarboxylic acids such as acetic acid. The oxidation reaction takes place under hydrocarbon rich conditions. The increased efficiency in this process is realized by the judicious use of steam and the catalyst systems set forth in the instant invention.

Steam assisted hydrocarbon oxidation process

The present invention provides a vapor phase process for high yield conversion of C.sub.4 -hydrocarbons to maleic acid and acetic acid with a heteropolymolybdic acid catalyst.

Hydrocarbon oxidation process

An improvement in the process wherein carbon monoxide and hydrogen are reacted in the liquid phase in the presence of a cobalt carbonyl catalyst whereby increased amounts of ethanol may be produced, which improvement comprises conducting the reaction in the presence of a non-polar, substantially inert, oxygenated hydrocarbon solvent.

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Corpus Christi, TX, United States of America

William E Slinkard