High-purity perfluoro-4-methyl-2-pentene and its preparation and

Details High-purity perfluoro-4-methyl-2-pentene and its preparation and High-purity perfluoro-4-methyl-2-pentene and its preparation and

1994-10-12

1996-09-17

Siegel, Alan

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

Organic compounds

Halogen containing

C07C 1738

Patent

active

055570208

ABSTRACT:
The toxic perfluoro-2-methyl-2-pentene can be removed from perfluoro-4-methyl-2-pentene by treating the mixture with lower alkanols, the toxic isomer being converted into high boiling-point compounds which can be easily removed. The high-purity perfluoro-4-methyl-2-pentene so obtained is suitable as a substitute for chlorofluorocarbons.

REFERENCES:
patent: 2918501 (1959-12-01), Brehm et al.
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patent: 3917724 (1975-11-01), Martini
patent: 4042638 (1977-08-01), Ozawa et al.
patent: 4766261 (1988-08-01), Bierl
patent: 4973774 (1990-11-01), Rozen et al.
patent: 5254774 (1993-10-01), Prokop
patent: 5352785 (1994-10-01), Herzberg
Chemical Abstracts, vol. 83, No. 19, Nov. 10, 1975, Columbus Ohio (abstract No. 163550).
Chemische Berichte, Bd. 106, Nr. 9, 1973 pp. 2850-2959, Sigmar P. V. Halasz et al.

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