JPH05239766A - Detergent for dry cleaning - Google Patents

Abstract

PURPOSE:To obtain a detergent for dry cleaning, comprising a specific organic solvent as an active component and holding excellent characteristics in place of fluorocarbon R113 destroying the ozonosphere. CONSTITUTION:The objective detergent for dry cleaning is obtained as a substitute for 1,1,2-trichloro-1,2,2-trifluoroethane (hereinafter referred to as R113) by including >=50wt.% 1H,6H-perfluorohexane as an active component. This detergent holds excellent characteristics possessed by the R113 and is useful as a substitute for the R113 having the high ability to destroy the ozonosphere. Organic solvents are selected from 5-15C hydrocarbons, alcohols, ketones, esters, chlorinated hydrocarbons, etc., as a preferred organic solvent to be included in combination.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cleaning agent for dry cleaning.

[0002]

2. Description of the Related Art For cleaning clothes, cleaning with a solvent (dry cleaning) is widely used for reasons such as good cleaning power and excellent drying property, but it is nonflammable, has low toxicity, and is chemically Stable and has little effect on clothing,
1,1,2-Trichloro-1,2,2-trifluoroethane (hereinafter referred to as R113) is widely used because it has many characteristics.

[0003]

As described above, R113
Has many excellent features. However, it is chemically stable, has a long life in the troposphere, and is not decomposed by strong ultraviolet rays until it reaches the stratosphere, releasing chlorine and destroying the ozone layer. It has recently been pointed out that it has a serious impact on the ecosystem on the earth. For this reason, there is an active international movement to regulate the production and consumption of fluorocarbons such as R113, which has a high ozone depletion potential, and to abolish them. In response to these movements, the present invention provides a new dry cleaning solvent which does not have ozone depletion ability and retains the excellent properties of R113.

[0004]

SUMMARY OF THE INVENTION The present invention provides a new dry cleaning solvent for achieving the above object. That is, the present invention is a cleaning agent for dry cleaning containing 1H, 6H-perfluorohexane as an active ingredient. The present invention will be described below.

The dry cleaning solvent of the present invention preferably contains 50% by weight or more of 1H, 6H-perfluorohexane as an active ingredient. More preferably 7
It is 0% by weight or more. The dry cleaning solvent of the present invention may optionally contain at least one selected from organic solvents such as hydrocarbons, alcohols, ketones, ethers, esters and chlorinated hydrocarbons. it can. The addition amount of these organic solvents is preferably less than 50% by weight, but when an azeotropic composition is present, it is preferably used in the vicinity thereof.

As the hydrocarbons, chain or cyclic saturated or unsaturated hydrocarbons having 5 to 15 carbon atoms are preferable, for example, n-pentane, 2-methylbutane, n-hexane, 2-methylpentane, 2 , 2-dimethylbutane,
2,3-dimethylbutane, n-heptane, 2-methylhexane, 3-methylhexane, 2,3-dimethylpentane, 2,4-dimethylpentane, n-octane, 2,
2,3-trimethylpentane, isooctane, n-nonane, 2,2,5-trimethylhexane, decane, dodecane, 1-pentene, 2-pentene, 1-hexene, 1-
Heptene, 1-nonene, 1-decene, cyclopentane,
Examples thereof include methylcyclopentane, cyclohexane, methylcyclohexane, ethylcyclohexane, paramenthane, cyclohexene, α-pinene, dipentene, decalin, petroleum ether, petroleum benzine, ligroin, gasoline, and kerosene.

Examples of alcohols include methanol, ethanol, 1-propanol, isopropanol, 1-butanol, 2-butanol, isobutanol, t-butanol, 1-pentanol, 2-pentanol, 3-pentanol, 2-methyl-1-butanol, isopentyl alcohol, t-pentyl alcohol, 3-methyl-2-butanol, neopentyl alcohol, 1-hexanol, 2-methyl-1-pentanol, 4-methyl-2-pentanol , 2-ethyl-1-
Butanol, 1-heptanol, 2-heptanol, 3
-Heptanol, 1-octanol, 2-octanol, 2-ethyl-1-hexanol, 1-nonanol,
1-decanol, 1-undecanol, 1-dodecanol, cyclohexanol, methylcyclohexanol,
Examples thereof include ethylene glycol and propylene glycol.

Examples of ketones include acetone, methyl ethyl ketone, 2-pentanone, 2-hexanone,
Methyl isobutyl ketone, 2-heptanone, 4-heptanone, diisobutyl ketone, phorone, isophorone, cyclohexanone, methylcyclohexanone and the like can be mentioned. Examples of ethers include diethyl ether,
Examples thereof include dipropyl ether, diisopropyl ether, dibutyl ether, tetrahydrofuran and the like.

Examples of the esters include methyl formate, ethyl formate, propyl formate, butyl formate, pentyl formate, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, pentyl acetate, isopentyl acetate, 3-methoxybutyl. Acetate, sec-hexyl acetate, 2-ethylbutyl acetate, 2-ethylhexyl acetate, cyclohexyl acetate, methyl propionate, ethyl propionate, butyl propionate, isopentyl propionate, methyl acetate, ethyl acetate, ethyl isovalerate, γ- Butyrolactone and the like can be mentioned.

Examples of chlorinated hydrocarbons include methylene chloride, 1,1-dichloroethane, 1,2-dichloroethane, 1,1-dichloroethylene, 1,2-dichloroethylene, trichloroethylene and tetrachloroethylene. Etc. If necessary, various auxiliary agents such as a surfactant and an antistatic agent can be added to the cleaning agent of the present invention.

The 1H, 6H-perfluorohexane of the present invention is, for example, "compound of fluorine" (published by Kodansha) 94.
It can be synthesized by the method described on the page.

[0012]

EXAMPLES Next, examples of the present invention will be shown, but the present invention is not limited to the following examples.

[0013]

[Example 1] Using a cleaning tester manufactured by Ueshima Seisakusho, a carbon-contaminated cloth (wool) manufactured by Test Fabric Co. was used at 23 ° C.
Table 1 shows the results of the visual evaluation of the washing effect after washing for 10 minutes.

[0014]

[Table 1]

[0015]

As is apparent from the examples, the solvent of the present invention is useful as a cleaning agent for dry cleaning in place of R113, which has a high ozone depleting ability.

Claims (1)

[Claims] 1. A cleaning agent for dry cleaning containing 1H, 6H-perfluorohexane as an active ingredient.