Cleaning compositions based on trichlorotrifluoroethane and alco

Details Cleaning compositions based on trichlorotrifluoroethane and alco Cleaning compositions based on trichlorotrifluoroethane and alco

1983-03-02

1986-07-08

Willis, Prince E.

Compositions

Water-softening or purifying or scale-inhibiting agents

134 26, 134 40, 252170, 252364, C11D 344

Patent

active

045991871

ABSTRACT:
A cleaning composition suitable for removing ionic flux residues from printed circuit boards comprises an approximate azeotropic mixture of 1,1,2-trichloro-1,2,2-trifluoroethane and an aliphatic alcohol having from 1 to 3 carbon atoms containing as additives and aliphatic alcohol having from 4 to 6 carbon atoms, preferably isobutyl alcohol, and a polyol, preferably ethylene glycol. Contaminated articles are cleaned by bringing them into contact with the cleaning composition which preferably is employed at the boil.

REFERENCES:
patent: 3340199 (1967-09-01), Clay et al.
patent: 3846327 (1974-11-01), Schofield
patent: 3904430 (1975-09-01), Tipping et al.
patent: 3988256 (1976-10-01), Vandermey et al.
patent: 4052328 (1977-10-01), Figiel
patent: 4260510 (1981-04-01), Hey et al.
patent: 4269630 (1981-05-01), Stephenson
patent: 4303558 (1981-12-01), Hey

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