Composition based on 1,1-dichloro-1-fluoroethane, 1,1,1,3,3-pent

Details Composition based on 1,1-dichloro-1-fluoroethane, 1,1,1,3,3-pent Composition based on 1,1-dichloro-1-fluoroethane, 1,1,1,3,3-pent

1992-04-30

1993-12-07

Skane, Christine

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252170, 252171, 252364, 252DIG9, 134 12, 134 31, 134 38, 134 40, 134 42, 203 67, 570164, 570177, 570178, C11D 730, C11D 750, C23G 5028, B08B 300

Patent

active

052681203

ABSTRACT:
To replace the cleaning compositions based on 1,1,2-trichloro-1,2,2-trifluoroethane (F113), the invention proposes a composition comprising, on a weight basis, 60 to 90% of 1,1-dichloro-1-fluoroethane (F141b), 9 to 33% of 1,1,1,3,3-pentafluorobutane (F365 mfc) and 1 to 7% of methanol. These three compounds form a positive azeotrope (b.p.=29.1.degree. C. at normal pressure).
The composition, optionally stabilized, can be employed for the cleaning and/or drying of solid surfaces, in particular for the defluxing of printed circuits and for the degreasing of mechanical components.

REFERENCES:
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patent: 4816174 (1989-03-01), Lund et al.
patent: 4842764 (1989-06-01), Lund et al.
patent: 4943622 (1990-07-01), Naraki et al.
patent: 4950364 (1990-08-01), Wismer
patent: 5059728 (1991-10-01), Li et al.
patent: 5073291 (1991-12-01), Robeck et al.
patent: 5099081 (1992-03-01), Bolmer et al.
patent: 5099082 (1992-03-01), Bolmer et al.
patent: 5145598 (1992-09-01), Swan et al.
patent: 5152913 (1992-10-01), Desbiendrus et al.
patent: 5211867 (1993-05-01), Shankland et al.
patent: 5219490 (1993-06-01), Basn et al.
French Search Report Dated Jan. 16, 1992.

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