Process for the production of acetic acid C4-esters

Details Process for the production of acetic acid C4-esters Process for the production of acetic acid C4-esters

2005-09-27

2005-09-27

Zucker, Paul A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

Reexamination Certificate

active

06949671

ABSTRACT:
Process for treating a mixed C4stream 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.

REFERENCES:
patent: 31 05 399 (1982-10-01), None
patent: WO 00/26175 (2000-05-01), None

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