Process for making n-butyl esters from butadiene

a technology of butadiene and n-butyl esters, which is applied in the preparation of ester-hydroxy reactions, chemical apparatus and processes, organic chemistry, etc., can solve the problems of increasing capital costs, and achieve the effect of increasing activity and increasing the cost of reaction selectivity
USRE38864E1Inactive Publication Date: 2005-11-01UNIVERSITY OF SOUTHERN MISSISSIPPI
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
UNIVERSITY OF SOUTHERN MISSISSIPPI
Publication Date
2005-11-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

Process for making a butyl ester from butadiene, comprising (a) reacting butadiene with a saturated aliphatic monocarboxylic acid to form a mixture of n-butenyl and secondary butenyl esters, (b) separating the n-butenyl ester from the secondary butenyl ester, and (c) hydrogenating the n-butenyl ester separated in step (b) in the presence of a catalyst to the corresponding n-butyl ester.
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Description

[0001] This is a continuation of PCT application No. PCT / GB99 / 03452, filed Oct. 19, 1999, the entire content of which is hereby incorporated by reference in this application.

[0002] The present invention relates to a process for making n-butyl esters by reacting butadiene with a carboxylic acid in the presence of a Brønsted or Lewis acid catalyst to form the unsaturated ester which is subsequently hydrogenated to form the saturated ester.BACKGROUND OF THE INVENTION

[0003] It is known that n-butyl esters such as n-butyl acetate can be produced by a number of routes. For instance, the hydroformylation of propylene in the presence of acetic acid is a method which gives a mixture of n-butyl acetate and iso-butyl acetate. This method however requires a source of syngas which increases capital costs. An alternative method is to react ethylene with vinyl acetate in the presence of an acid catalyst followed by the hydrogenation of the resultant unsaturated ester. A further method is the reaction...

Claims

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