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AssigneeE. I. Du Pont de Nemours and Company
InventorDouglas R. Anton
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Mixtures of the compound 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane with alcohols, ethers, esters, ketones, nitrogen-containing organic compounds, and halogenated hydrocarbons are disclosed; as is a process for cleaning a solid surface which comprises treating the surface with said mixtures. Binary mixtures of 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane with about 5 to 13 weight percent methanol, with about 3 to 11 weight percent ethanol, with about 4 to 12 weight percent isopropanol, with about 52 to 60 weight percent trans-1,2-dichloroethylene, with about 47 to 55 weight percent dichloromethane, with about 1 to 9 weight percent trichloroethane, with about 0.1 to 7 weight percent acetonitrile, and with about 0.1 to 5 weight percent nitromethane, and ternary mixtures of from about 75 to 83 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane, about 8 to 16 weight percent acetone, and from about 5 to 13 weight percent ethanol, are disclosed as azeotrope or azeotrope-like compositions and are particularly suited for use where solvent recovery and reuse is practiced.
A cleaning composition consisting essentially of (i) between 5 and 99 percent by weight 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and (ii) at least about 1 percent by weight of at least one solvent selected from the group consisting of alcohols containing from 1 to 4 carbon atoms, esters containing from 3 to 6 carbon atoms, ethers containing from 2 to 6 carbon atoms, ketones containing from 3 to 6 carbon atoms, halogenated hydrocarbons containing from 1 to 4 carbon atoms wherein the halogen is chlorine or both chlorine and fluorine, acetonitrile, and nitromethane.
A composition comprising from about 87 to 95 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and from about 5 to 13 weight percent methanol.
A composition comprising from about 89 to 97 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and from about 3 to 11 weight percent ethanol.
A composition comprising from about 88 to 96 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane, and from about 4 to 12 weight percent isopropanol.
A composition comprising from about 40 to 48 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and from about 52 to 60 weight percent trans-1,2-dichloroethylene.
A composition comprising from about 45 to 53 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and from about 47 to 55 weight percent dichloromethane.
A composition comprising from about 91 to 99 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and from about 1 to 9 weight percent trichloroethene.
A composition comprising from about 93 to 99.9 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and from about 0.1 to 7 weight percent acetonitrile.
A composition comprising from about 95 to 99.9 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and from about 0.1 to 5 weight percent nitromethane.
The composition of claim 29, consisting essentially of an azeotrope-like mixture of from about 95 to 99.9 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and from about 0.1 to 5 weight percent nitromethane wherein the composition has a boiling point of about 67.degree. C. at substantially atmospheric pressure.
A composition comprising from about 75 to 83 weight percent 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane, from about 8 to 16 weight percent acetone, and from about 5 to 13 weight percent ethanol.
A process for cleaning a solid surface which comprises treating said surface with a composition comprising from about 5 to 99 weight percent of 1,1,1,2,2,3,5,5,5-nonafluoro-4-trifluoromethylpentane and at least about 1 percent by weight of at least one solvent selected from the group consisting of alcohols containing 1 to 4 carbon atoms, esters containing from 3 to 6 carbon atoms, ethers containing from 2 to 6 carbon atoms, ketones containing from 3 to 6 carbon atoms, halogenated hydrocarbons containing from 1 to 4 carbon atoms wherein the halogen is chlorine or both chlorine and fluorine, acetonitrile and nitromethane.
Dependencies are inferred from the claim text.