Method for recovering 1,1,1-trichloroethane from textile materia

Details Method for recovering 1,1,1-trichloroethane from textile materia Method for recovering 1,1,1-trichloroethane from textile materia

1979-12-14

1982-01-26

Tungol, Maria Parrish

Bleaching and dyeing; fluid treatment and chemical modification

Cleaning or laundering

Dry cleaning

203 6, 203 7, 570262, D06L 110, B01D 336, C07C 1738

Patent

active

043126332

ABSTRACT:
1,1,1-trichloroethane is recovered in an excellent yield from textile material without deterioration in quality of the textile material by a method in which a textile material is introduced into a hot water bath having a temperature of 64.degree. C. or more and a pH of 4.0 or more, so as to allow 1,1,1-trichloroethane to vaporize together with water, the mixture of vapors of 1,1,1-trichloroethane and water is condensed by cooling it, and then, the condensed 1,1,1-trichloroethane is separated from the condensed water.

REFERENCES:
patent: 3404943 (1968-10-01), Morris
patent: 3481685 (1969-12-01), White
patent: 3493320 (1970-02-01), Case et al.
patent: 3660248 (1972-05-01), Tsao
patent: 3708260 (1973-01-01), Marshall
Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 5, 1965, p. 155.

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