Process for conjointly preparing methyl tert.-butyl ether and ob

Details Process for conjointly preparing methyl tert.-butyl ether and ob Process for conjointly preparing methyl tert.-butyl ether and ob

1980-06-19

1982-03-16

Evans, Joseph E.

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

Organic compounds

Oxygen containing

568907, 585639, C07C 4106

Patent

active

043202322

ABSTRACT:
A process for conjointly preparing methyl tert.-butyl ether and obtaining isobutene from an isobutene-containing C.sub.4 -hydrocarbon mixture. In the process the C.sub.4 -hydrocarbon mixture is reacted, in one or more etherification stages, with methanol and a primary C.sub.3 - or C.sub.4 -alcohol in the presence of an acid condensing agent, the resulting reaction mixture or mixtures are then separated into a fraction containing the unconverted hydrocarbons, the methyl tert.-butyl ether and a fraction containing the C.sub.3 - or C.sub.4 -alkyl tert.-butyl ether. Thereafter, the C.sub.3 - or C.sub.4 -alkyl tert.-butyl ether is decomposed at an elevated temperature, in the presence of an acid catalyst, into isobutene and primary C.sub.3 - or C.sub.4 -alcohol.

REFERENCES:
patent: 3119766 (1964-01-01), Voltz et al.
patent: 3121124 (1964-02-01), Verdol
patent: 3170000 (1965-02-01), Verdol
patent: 3629478 (1971-12-01), Haunschild
patent: 3637889 (1972-01-01), Watanabe et al.
patent: 3979461 (1976-09-01), Ancillotti et al.
patent: 4071567 (1978-01-01), Ancillotti et al.
patent: 4242526 (1980-12-01), Laky et al.

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