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US 4,378,303 AGranted
Azeotropic solvent composition
AssigneeDaikin Kogyo Co., Ltd.
InventorsIwao Hisamoto, Chiaki Maeda, Yukio Omure
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Abstract
An azeotropic solvent composition comprising about 64.6 to 89.0% by weight of tetrachlorodifluoroethane, about 3.7 to 34.2% by weight of an alcohol having carbon atoms of 1 to 5 and about 1.2 to 7.3% by weight of nitroethane.
Claims9
An azeotropic solvent composition comprising
- (a) about 64.6 to 89.0% by weight of 1,1,2,2-tetrachloro-1,2-difluoroethane or a mixture of 1,1,2,2-tetrachloro-1,2-difluoroethane and an isomer thereof,
- (b) about 3.7 to 34.2% by weight of an alcohol selected from the group consisting of ethyl alcohol, n-propyl alcohol, iso-propyl alcohol, n-butyl alcohol, iso-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol and tert-amyl alcohol,
- (c) about 0.4 to 7.3% by weight of nitroethane.
Dependencies are inferred from the claim text.