Azeotrope-like compositions of trichlorofluoromethane, dichlorot

Details Azeotrope-like compositions of trichlorofluoromethane, dichlorot Azeotrope-like compositions of trichlorofluoromethane, dichlorot

1988-09-06

1990-02-13

Welsh, Maurice J.

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 38, 134 39, 134 40, 252 67, 252126, 252162, 252172, 252364, 252DIG9, 521131, C08G 1814, C08J 914

Patent

active

049003658

ABSTRACT:
Azeotrope-like compositions comprising trichlorofluoromethane, a dichlorotrifluoroethane selected from the group consisting of 1,1-dichloro-2,2,2-trifluoroethane and 1,2-dichloro-1,1,2-trifluoroethane and isopentane are novel compositions particularly useful as blowing agents in the preparation of polyurethane and polyisocyanurate foams.

REFERENCES:
patent: 3249546 (1966-05-01), Eiseman
patent: 3332881 (1967-07-01), Burt et al.
patent: 3940342 (1976-02-01), Hutchinson
patent: 4002573 (1977-01-01), Hutchinson
patent: 4055521 (1977-10-01), Taub et al.
patent: 4531950 (1985-07-01), Burt
patent: 4531951 (1985-07-01), Burt et al.
patent: 4624970 (1986-11-01), Dwyer et al.
patent: 4771080 (1988-09-01), Ikuki et al.
CRC Handbook of Chemistry & Physics, Weast, 62nd Ed., 1981, pp. D1-D9.

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