Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1991-02-07
1992-10-06
Lieberman, Paul
Compositions
Water-softening or purifying or scale-inhibiting agents
134 12, 134 31, 134 38, 134 39, 134 40, 252153, 252162, 252170, 252364, 252DIG9, C11D 730, C11D 750, C23G 5028
Patent
active
051529130
ABSTRACT:
For replacing cleaning compositions based on 1,1,2-trichloro-1,2,2-trifluoroethane (F113), the invention provides a composition comprising 55 to 79.5% by weight of 1,1-dichloro-1-fluoroethane (F141b), 20 to 40% by weight of methyl formate and 0.5 to 5% of methanol. These three compounds form a positive azeotrope (b.p.=28.3.degree. C. at atmospheric pressure).
The composition, which may be stabilized, can be used for cleaning solid surfaces, in particular for removing flux from printed circuits and for degreasing mechanical parts.
REFERENCES:
patent: 2101993 (1937-02-01), Fleischer
patent: 3607755 (1971-09-01), Murphy et al.
patent: 3914191 (1975-10-01), Scott
patent: 4483917 (1984-11-01), Archer et al.
patent: 4804493 (1989-02-01), Gorski
patent: 4816174 (1989-03-01), Lund et al.
patent: 4836947 (1989-06-01), Lund et al.
patent: 4842764 (1989-06-01), Lund et al.
patent: 4945119 (1990-07-01), Smits et al.
patent: 4960804 (1990-10-01), Doerge
Chem. Abstr., vol. 95, 1981, p. 693, Abstract No. 42331a.
Desbiendras Daniel
Martin Jean-Jacques
Michaud Pascal
Lieberman Paul
Skaling Linda D.
Societe Atochem
LandOfFree
Cleaning composition based on 1,1-dichloro-1-fluoroethane, methy does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cleaning composition based on 1,1-dichloro-1-fluoroethane, methy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cleaning composition based on 1,1-dichloro-1-fluoroethane, methy will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1187291