Process for separation of 1,1-difluoroethane from its mixture wi

Details Process for separation of 1,1-difluoroethane from its mixture wi Process for separation of 1,1-difluoroethane from its mixture wi

1995-04-10

1997-05-06

Warden, Robert J.

Distillation: processes, separatory

Vaporization zone under positive pressure or vacuum

203 80, 570178, B01D 310

Patent

active

056267258

ABSTRACT:
The invention relates to a process for separating 1,1-difluoroethane from its mixtures with hydrogen fluoride, in which the mixture is subjected to a distillation in a column operating at a pressure of less than 10 bar.

REFERENCES:
patent: 4021312 (1977-05-01), Carter
Abstract of Soviet Union Patent No. 341788, 1972.
Yang et al: "Preparation, separation and purification of 1,1-difluoroethane". Chemical Abstracts, vol. 119, No. 11, Sep. 13, 1993, Colombus, Ohio, US, abstract No. 116776 & CN-A-1069019, Feb. 17, 1993.

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