Bp Chemicals Limited

The University of Southern Mississippi

Ineos Acetyls UK Limited

Nicholas John Hazel

John Glenn Sunley

Andrew Richard Lucy

Nevin John Stewart

Stephen Paul Goodwin

Richard George Chapman

Benjamin Patrick Gracey

David John Law

Evert Jan Ditzel

Mark Stephen Roberts

Bogdan Costin Gagea

David Linke

Thomas Edward Clark

Gordon John Haining

Lesley Ann Key

A process for the production of methyl acetate by carbonylating at a temperature of 250 to 350&#xb0; C., in the presence of a zeolite catalyst, a feed comprising dimethyl ether, a gas comprising carbon monoxide and hydrogen at a molar ratio of hydrogen to carbon monoxide of at least 1, methyl acetate and one or more compounds containing a hydroxyl functional group.

Carbonylation process for the production of methyl acetate

A carbonylation process in the presence of a pretreated zeolite catalyst which comprises the sequential steps (i) pretreating the catalyst and (ii) carbonylating dimethyl ether with a carbon monoxide-containing gas to produce methyl acetate in which the catalyst pretreatment step (i) comprises a step (a) contacting the catalyst with a first treatment mixture comprising water vapour; and a step (b) contacting the treated catalyst of step (a) with a second treatment mixture comprising an inert gas and at least one of dimethyl ether and methanol.

Carbonylation process using a pretreated zeolite catalyst

Process for treating a zeolite catalyst for the carbonylation of dimethyl ether to produce methyl acetate, in which the catalyst is contacted with a treatment gas containing water vapor in an amount of at least 1 mol % and at a temperature below which dealumination of the zeolite structure occurs. The zeolite contains at least one channel which is defined by an 8-member ring and is mordenite.

Process for treating zeolite catalysts

Process for the production of methyl acetate by carbonylating dimethyl ether with carbon monoxide in the presence of hydrogen and a zeolite catalyst. The process is carried out with a molar ratio of hydrogen to carbon monoxide of at least 1 and the catalyst has been calcined at a temperature of from about 375&#xb0; C. to about 475&#xb0; C.

Carbonylation process

A process for the production of methyl acetate by reacting dimethyl ether with carbon monoxide into a carbonylation reactor containing a mordenite catalyst in the presence of added methyl acetate and/or acetic acid.

Process for treating a mixed Cstream comprising iso-butene and 1,3-butadiene by (a) reacting the stream with acetic acid in an addition reactor, (b) withdrawing product comprising iso-butene acetate, sec-butenyl acetate, n-butenyl acetate and t-butyl acetate, and recovering n-butenyl acetate from the product and separating and recycling t-butyl acetate to the addition reactor. The process provides increased efficiency of acetic acid utilisation together with useful products, e.g. n-butenyl and sec-butenyl acetates which can be separated and sold as such or converted to other products. The unreacted isobutene can be separated and used as such, or recycled and allowed to dimerise to di-isobutene, another useful product.

Process for the production of acetic acid C4-esters

2-methylbutoxy ethoxyethanol

Ether cosolvents for resin formulations

Non-conjugated diolefins having the formula: ##STR1## wherein R.sup.3 and R.sup.4 are either hydrogen, alkyl or substituted alkyl and n is an integer,

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Beverley, United Kingdom

Nicholas John Hazel