Novel azeotropic or azeotrope-like mixture of 2,2,2-trifluoroeth

Details Novel azeotropic or azeotrope-like mixture of 2,2,2-trifluoroeth Novel azeotropic or azeotrope-like mixture of 2,2,2-trifluoroeth

1991-04-24

1992-02-11

Lieberman, Paul

Compositions

Water-softening or purifying or scale-inhibiting agents

134 12, 134 31, 134 38, 134 39, 134 40, 203 67, 252162, 252170, 252364, 252DIG9, C11D 730, C11D 750, C23G 5028, B08B 300

Patent

active

050873830

ABSTRACT:
The invention relates to a novel azeotropic or azeotrope-like mixture which essentially comprises about 90-97% by mass of 2,2,2-trifluoroethyl 1,1,2,2-tetrafluoroethyl ether and about 3-10% by mass of ethanol and also to a process for cleaning electrical or electronic components, in particular soldered circuit boards or printed circuits, but also other solid surfaces, with the aid of said mixture. Soldering fluxes, in particular, can be removed from circuit boards with the aid of said mixture.

REFERENCES:
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patent: 4559154 (1985-12-01), Powell
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patent: 4999127 (1991-03-01), Merchant
Chemical Abstract No. 102:165172v abstract of Shere et al. "Extractive Fermentation using Fluorinated Hydrocarbons" Can. Bioenergy R & D Semin., Proc. J., 5th 1984 pp. 548-552.

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