Borontrifluoride recovery from alkyl phenol mixture

Details Borontrifluoride recovery from alkyl phenol mixture Borontrifluoride recovery from alkyl phenol mixture

1975-10-06

1977-04-12

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260624C, 423293, C07F 502

Patent

active

040175480

ABSTRACT:
A mixture of BF.sub.3 gas and vapors of an alkane hydrocarbon having a normal boiling point in the range of about 80.degree. to about 125.degree. C are recovered as exhaust from the partial-condensing zone of a stripping system to which is fed 6-25 weight percent of said alkane as a liquid dissolved in the fluid reaction mixture from BF.sub.3 -phenolate catalyzed alkylation of phenol with 500-3000 M.W. liquid viscous mono-olefinic polymer of propylene or butylene and BF.sub.3 -free portion of the fluid reaction mixture is withdrawn as liquid from the partial-reboiling zone of said system. The removal of BF.sub.3 by use of such stripping operation is successful without boiling a mixture of said alkane and said alkylation reaction mixture.

REFERENCES:
patent: 2378968 (1945-06-01), Axe
patent: 2739172 (1956-03-01), Peters
patent: 3000964 (1961-09-01), Milligan
patent: 3360464 (1967-12-01), Otto
patent: 3692844 (1972-09-01), Hollis et al.
patent: 3929749 (1975-12-01), Cooper et al.
Chemical Abstracts, v. 74, 66318u, (1971).

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