Celanese International Corporation

Barbara F M Kimmich

G Paull Torrence

Jan Cornelis Van Der Waal

Qiang Yao

Hannah E Toomey

Michael J Doyle

Melchior A Meilchen

Prashant Purushottam Barve

Ilias S Kotsianis

Milind Yashwant Gupte

Ravindra William Shinde

Sanjay Pandurang Kamble

Gopal Moreshwar Chaphekar

Hang Wang

Bhaskar Datttraya Kulkarni

Satish N Shintre

Mark O Scates

Ronald David Shaver

James H Zink

Jeremy J Patt

Bozena A A Silberova

A continuous process is provided for selective formation of a vinyl ester by reactive distillation from a corresponding carboxylic acid. Carboxylic acid, vinyl acetate, and a palladium acetate&#x2014;bidentate ligand catalyst complex are provided and reacted in a typical embodiment. Acetic acid and vinyl acetate are continuously removed from the reaction mixture and vinyl acetate is recycled to the reaction mixture. The vinyl ester product is separated from the vinyl acetate, residual carboxylic acid, residual acetic acid, and catalyst.

Process for the continuous transvinylation of carboxylic acids with vinyl acetate

A semi-continuous process is provided for selective formation of a vinyl ester by reactive distillation from a corresponding carboxylic acid. Carboxylic acid, vinyl acetate, and a palladium acetate&#x2014;bidentate ligand catalyst complex are provided and reacted in a typical embodiment. Acetic acid and vinyl acetate are continuously removed from the reaction mixture and vinyl acetate is recycled to the reaction mixture. The vinyl ester product is separated from the vinyl acetate, residual carboxylic acid, residual acetic acid, and catalyst.

Process for the semi-continuous transvinylation of carboxylic acids with vinyl acetate

A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene with a homogeneous catalyst is disclosed and claimed. In one aspect, esters of neoacids are provided.

Vinyl ester production from acetylene and carboxylic acid utilizing homogeneous catalyst

A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene with a homogeneous catalyst is disclosed and claimed. In a preferred embodiment of this invention, reaction of benzoic acid and acetylene in the presence of Group VIII metal complex catalyst at a temperature of about 50 to 180&#xb0; C. results in quantitative yields of vinyl benzoate.

A process for reducing the aldehyde concentration in a target stream of a carbonylation process is disclosed. More specifically, a process for reducing the aldehyde concentration in an internal process stream or feed stream of a carbonylation process is disclosed. In particular, a process in which a target stream comprising a carbonylatable reactant and a first aldehyde concentration is subjected to a reaction comprising a supported catalyst that comprises at least one Group 8 to Group 11 metal at conditions sufficient to reduce the first aldehyde concentration to a second aldehyde concentration is disclosed.

Process for the reduction of aldehyde concentration in a target stream

A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene under heterogeneous catalytic conditions is disclosed and claimed. In a preferred embodiment of this invention, reaction of benzoic acid and acetylene in the presence of supported platinum catalyst at a temperature of from about 100 to 180&#xb0; C. results in quantitative yields of vinyl benzoate.

Vinyl ester production from acetylene and carboxylic acid utilizing heterogeneous catalyst

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Bernardsville, NJ, United States of America

Barbara F M Kimmich