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US 6,281,186 B1Granted
Cleaning or drying compositions based on 43-10mee, on CH2C12, on cyclopentane and on CH3OH
AssigneeAtofina
InventorsPascal Michaud, Jean-Jacques Martin
Life of this patent
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Abstract
In order to replace compositions based on CFC or on HCFC in cleaning or drying applications on solid surfaces (in particular defluxing), the invention provides azeotropic or near-azeotropic compositions based on 1,1,1,2,3,4,4,5,5,5-decafluoropentane, on dichloromethane, on cyclopentane and on methanol.
Claims9
Azeotropic or near-azeotropic compositions comprising:
- from 35 to 55% of 1,1,1,2,3,4,4,5,5,5-decafluoropentane,
- from 20 to 40% of dichloromethane,
- from 10 to 20%, of cyclopentane, and
- from 0.5 to 10% of methanol.
1 more element
Dependencies are inferred from the claim text.