Method for washing an article with composition having a brominated hydrocarbon and stabilizer
AssigneeDipsol Chemicals Co., Ltd.
InventorsKatsuhide Oshima, Shigemi Tanaka
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Abstract
A deterring solvent essentially consists of (A) a brominated hydrocarbon of the formula: C.sub.n H.sub.2n+1 Br wherein n represents a number of 3 or above and/or a brominated hydrocarbon of the formula: C.sub.m H.sub.2m-1 Br wherein m represents a number of 2 or above. A deterging solvent composition comprises the above-described solvent (A) and a stabilizer selected from the group consisting of nitroalkanes, ethers, epoxides and amines. These solvent and solvent composition have an excellent deterging effect and usable as a substitute for the flon and chlorine solvents. Furthermore, the deterging solvent composition has a high stability.
Claims19
A method of cleaning oil or grease from an article comprising the steps of
- contacting said article with a non-chlorofluorocarbon deterging solvent,
- wherein said non-chlorofluorocarbon deterging solvent consists essentially of:
- (A) a brominated hydrocarbon of a formula selected from the group consisting of C.sub.n H.sub.2n+1 Br and C.sub.m H.sub.2m-1 Br, wherein n represents a number of 3 or above, and m represents a number of 2 or above, and
- (B) a stabilizer selected from the group consisting of:
- (i) a nitroalkane,
- (ii) an epoxide,
- (iii) an amine, and
- (iv) an ether selected from the group consisting of 1,2-dimethoxyethane, 1,4-dioxane, diethyl ether, diisopropyl ether, dibutyl ether, trioxane, acetal, acetone dimethylacetal, .gamma.-butyrolactone, methyl t-butyl ether, tetrahydrofuran, N-methylpyrrole and ethylene glycol monoalkyl ether;
- and
- removing said oil or grease from said article.
A method, comprising
- immersing an article in a non-chlorofluorocarbon deterging solvent to remove grease or oil therefrom,
- wherein said article comprises metal or plastic and has said grease or oil attached, and
- said non-chlorofluorocarbon deterging solvent consists essentially of:
- (A) a brominated hydrocarbon of a formula selected from a group consisting of C.sub.n H.sub.2n+1 Br and C.sub.m H.sub.2m-1 Br, wherein n represents a number of 3 or above, and m represents a number of 2 or above, and
- (B) a stabilizer selected from the group consisting of:
- (i) a nitroalkane,
- (ii) an epoxide,
- (iii) an amine, and
- (iv) an ether selected from the group consisting of 1,2-dimethoxyethane, 1,4-dioxane, diethyl ether, diisopropyl ether, dibutyl ether, trioxane, acetal, acetone dimethylacetal, .gamma.-butyrolactone, methyl t-butyl ether, tetrahydrofuran, N-methylpyrrole and ethylene glycol monoalkyl ether.
A method, comprising washing an article with a deterging solvent, wherein said deterging solvent comprises:
- (A) a brominated hydrocarbon selected from the group consisting of n-propyl bromide and iso-propyl bromide, and
- (B) a nitroalkane selected from a group consisting of nitromethane, nitroethane and nitropropane, and
- (C) a compound selected from the group consisting of ethylene glycol monoalkyl ethers.
Dependencies are inferred from the claim text.