JPH02166199A - Cleaning agent for degreasing - Google Patents

Abstract

PURPOSE:To prepare a cleaning agent excellent in the degreasing power and free from the fear of environment pollution, skin cancer, composite part corrosion, etc., by compounding a specific chlorofluorohydrocarbon as an effective component of the cleaning agent for degreasing. CONSTITUTION:At least one chlorofluorohydrocarbon selected from the group consisting of 3,3-dichloro-1,1,2,2,3-pentafluoropropane, 1,3-dichloro-1,2,2,3- tetrafluoropropane, 3,3-dichloro-1,1,2,2-tetrafluoropropane, 3-chloro-1,2,2,3- tetrafluoropropane, 3-chloro-1,1,1,2,2-pentafluoropropane, 1-chloro-1,1,2,2,3- pentafluoropropane, 1,3-dichloro-2,2,3-trifluoropropane, 3-chloro-1,2,2- trifluoropropane, 3,3-dichloro-1,2,2,3-tetrafluoropropane, 1-chloro-1,1,2,2- tetrafluoropropane, 3,3-dichloro-1,2,2-trifluoropropane, and 3-chloro-2,2,3- trifluoropropane is compounded as an effective component to give a cleaning agent for degreasing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a degreasing detergent used for removing oils adhering to metal parts processed using a metal working oil.

[Conventional technology] Cutting oils are used in the cutting process of precision mechanical parts, electrical parts, etc., but in many cases, products cannot be produced if these oils remain attached to them. Therefore, the finishing of such parts is usually In the process, cleaning is performed using an organic solvent. As an organic solvent, it has various advantages as listed below: 1.
1,2-Trichloro-1,2,2-trifluoroethane (hereinafter referred to as R113) is widely used.

R113 is nonflammable, egg-weighted, has low toxicity, and has excellent stability. Furthermore, it has the property of selectively dissolving various types of dirt without attacking base materials such as metals, plastics, and engineered elastomers. In general, many of the items to be washed are composite parts made of metals, plastics, elastomers, etc. Therefore, from this point of view, R113
was advantageous.

[Problem to be solved by the invention]

The present invention developed R113 in response to the fact that although conventionally used R113 has various advantages, it is suspected that it destroys the ozone of adult Hl and may even cause skin cancer. It is an object of the present invention to provide a new degreasing detergent that has similar various advantages and can perform equivalent cleaning.

[Means for Solving the Problems J The present invention has been made to achieve the above-mentioned objects,
A degreasing detergent containing a specific chlorofluorinated hydrocarbon having 3 carbon atoms as an active ingredient.

The chlorofluorinated hydrocarbon of the present invention is 3,3-dichloro-
1,1,2,2,3-pentafluoropropane (C11
F.

-(:F, -CC1,F, b, p, 64.1℃)
, 1,3-dichloro-1,2,2,3-tetrafluoropropane (C)ICIP-CF, -C)ICIP, b
, p, 82.6°C), 3.3-dichloro-1,1,2,
2-tetrafluoropropane (CIIFI-CF, -C
) ICI o.

b, p, 82.1'C), 3-chloro-1,2
, 2,3-tetrafluoropropane (CLF-CFt-
CHCIF, b, p.

78.8°C), 3-chloro-1,1,1,2,2-pentafluoropropane (CF, -CFI-CHICI,
b, p, 27.2°C), l-chloro-1,1,2,2
,3-pentafluoropropane (CCIFmaro-CF, -
CHmF, b, p, 36.2°C), 1,3-dichloro-2,2,3-trifluoropropane (C) IIC
I-CFs-CHCIF, b, 9.93°4°C),
3-chloro-1,2,2-trifluoropropane (CH
IF-CFI-CI (ICI, b, p.

96.1'C), 3,3-dichloro-1,2,2,
3-tetrafluoropropane (CHIF-CFI-CC
1iF, b, p, 58.1"C), l-chloro-i
, i, 2,2-tetrafluoropropane (CGIF
m-CF++-CI5. b, p, 19.9℃), 3
．． 3-dichloro-1,2,2-trifluoropropane (
C'H*F-CF.

-C) IcI□b, p, 69.8°C)% 3-chloro2.2.3-trifluoropropane (C1(s-CFg
-CHCIF, b, p.

One or a mixture of two or more hydrogen-containing chlorofluorinated hydrocarbons such as 37.8° C.) is preferred.

The degreasing detergent of the present invention can contain various other components depending on various purposes. For example, to increase the dissolving power, hydrocarbons, alcohols, ketones,
A small amount of at least 1 fit selected from organic solvents such as chlorinated hydrocarbons or esters can be contained.

The content ratio of these organic solvents in the degreasing detergent is 0 to 5.
0% by weight, preferably 10 to 40 m1%, more preferably 20 to 30% by weight.0 If the mixture of the chlorinated hydrocarbons and organic solvent of the present invention has an azeotropic composition,
Use in its azeotropic composition is preferred.

The hydrocarbons are preferably linear or cyclic saturated or unsaturated hydrocarbons having 1 to 15 carbon atoms, such as n-pentane, isopentane, n-hexane, isohexane, 2-methylpentane, 2,2-dimethylbutane, 2.3-dimethylbutane, n-hebutane, isohebutane, 3-methylhexane, 2,4-dimethylpentane, n-octane, 2-
Methylhebutane, 3-methylhebutane, 4-methylhebutane, 2.2-dimethylhexane, 2.5-dimethylhexane, 3.3-dimethylhexane, 2-methyl-3-
Ethylpentane, 3-methyl-3-ethylpentane, 2
, 3.3-trimethylpentane, 2.3.4-F-
Dimethylpentane, 2,2.3-trimethylpentane, isooctane, nonane, 2,2.5-)-dimethylhexane, decane, dodencane, l-pentene, 2-pentene, 1-hexene, 1-octene, l-nonene , l-
It is selected from decene, cyclopentane, methylcyclohexane, cyclohexane, methylcyclohexane, ethylcyclohexane, bicyclohexane, cyclohexene, α-pinene, dipentene, decalin, tetralin, amidino, amylnaphthalene, and the like. More preferably n-pentane, n-hexane, cyclohexane,
n-hebutane, etc.

The alcohols are preferably linear or cyclic saturated or unsaturated alcohols having 1 to 17 carbon atoms, including methanol, ethanol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, 5ea-butyl alcohol, and isobutyl alcohol. , tert-butyl alcohol.

Pentyl alcohol, 5ec-amyl alcohol, l-
Ethyl-1-propatol, 2-methyl-1-butanol, impentyl alcohol, tart-pentyl alcohol, 3-methyl-2-butanol, neopentyl alcohol, 1-hexanol, 2-methyl-! -Pentanol, 4-methyl-2-pentanol, 2-ethyl-
1-butanol, 1-heptatool, 2-heptatool, 3-heptatool, 1-octanol, 2-octanol, 2-ethyl-l-hexanol, l-nonanol, 3,5.5-trimethyl-1-hexanol ,! -decanol, 1-undecanol,! -dodecanol, allyl alcohol, propargyl alcohol, benzyl alcohol, cyclohexanol, 1-methylcyclohexanol, 2-methylcyclohexanol.

3-methylcyclohexanol, 4-methylcyclohexanol, α-terpineol, avinitinol, 2.
It is selected from 6-dimethyl-4-heptatool, trimethylnonyl alcohol, tetradecyl alcohol, heptadecyl alcohol, and the like. More preferred are methanol, ethanol, isopropyl alcohol and the like.

, as rockettones, R-CO-R, R-GO, R-CO
-R'-Saturated or unsaturated hydrocarbon group having 1 to 9 carbon atoms) is preferably represented by the general formula.

Acetone, methyl ethyl ketone, 2-pentanone, 3-
Pentanone, 2-hexanone, methyl-n-butyl ketone, methyl butyl ketone, 2-hebucnone, 4-heptanone, diisobutyl ketone, acetonylacetone, mesityl oxide, holon, methyl-〇-amyl ketone, ethyl butyl ketone, methyl hexyl ketone , cyclohexanone, methylcyclohexanone, isophorone, 2.4
- selected from bentanedione, diacetone alcohol, acetophenone, fenchen, etc. More preferred are acetone, methyl ethyl ketone and the like.

The chlorinated hydrocarbons are preferably saturated or unsaturated chlorinated hydrocarbons having 1 to 2 carbon atoms, such as methylene chloride, carbon tetrachloride, 1,1-dichloroethane, 1,2-dichloroethane, 1,1. 1-trichloroethane, 1,1.2-
Trichloroethane, 1. l, 1,2-tetrachloroethane,! , 1,2,2-tetrachloroethane, pentachloroethane, 1,1-dichloroethylene, 1,2-dichloroethylene, trichlorethylene, tetrachloroethylene, and the like. More preferably methylene chloride, 1, 1. These include 1-trichloroethane, trichloroethylene, and tetrachloroethylene.

Examples of esters include Ro0OR4 represented by the following general formula (where R,,R IRIIR41R@IL is ("or OH or a hydrocarbon group having 1 to 19 carbon atoms and having a saturated or unsaturated bond") Specifically, methyl formate, ethyl formate, propyl formate,
Butyl formate, isobutyl formate, pentyl formate, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, 5ec-butyl acetate, pentyl acetate, isopentyl acetate, 3-methoxybutyl acetate, 5ec-hexyl acetate, 2-Ethylbutyl acetate, 2-ethylhexyl acetate, cyclohexyl acetate, benzyl acetate, methyl propionate, ethyl propionate, butyl propionate, isopentyl propionate, methyl butyrate, ethyl butyrate, butyl butyrate, isoperatyl butyrate, isobutyl isobutyrate, 2 -Hydroxy-
Ethyl 2-methylpropionate, stearate, butyl phosphate, pentyl stearate, methyl benzoate, ethyl benzoate, propyl benzoate, butyl benzoate, isopentyl benzoate, benzyl benzoate, ethyl abietate,
Benzyl abietate, adipine bis-2-ethylhexyl, γ-butyrolact, diethyl oxalate, dibutyl oxalate, dibentyl chelate, diethyl malonate,
Dimethyl maleate, diethyl maleate, dibutyl maleate, dibutyl tartrate, tributyl citrate, dibutyl sebacate, bis-2-ethylhexyl sebacate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, bis-2-ethylhexyl phthalate , dioctyl phthalate, etc. More preferred are methyl acetate, ethyl acetate and the like.

The degreasing detergent of the present invention may further be mixed with various cleaning aids and stabilizers, or hydrogen-containing chlorinated fluorinated hydrocarbons that have little effect on ozone destruction.Cleaning methods include hand wiping, soaking Ordinary methods such as spraying, shaking, ultrasonic cleaning, steam cleaning, etc. can be used.

[Examples] Examples 1 to 17 Cutting oil cleaning tests were conducted using the degreasing detergents shown in Table 1 below.

5LIS-304 test piece (25mm x 30m
+++X 2mm thick) is immersed in spindle oil,
The test piece was immersed in a degreasing detergent for 5 minutes and then taken out, and the residual state of spindle oil on the surface of the test piece was visually observed. The results are shown in Table 1.

, Table 1 [Effects of the Invention J] As is clear from the Examples, the degreasing detergent of the present invention has an excellent cleaning effect on oils and fats. In addition, like R113, which has been used conventionally, it has an appropriate dissolving power, so it can degrease and clean composite parts made of metals, plastics, elastomers, etc. without adversely affecting them.

(): Mixing ratio [wt%] 0; Can be removed well Δ; trace amount remaining O; Good condition ×: Significantly remaining

Claims (2)

[Claims] (1) 3,3-dichloro-1,1,2,2,3-pentafluoropropane, 1,3-dichloro-1,2,2,3
-tetrafluoropropane, 3,3-dichloro-1,1
, 2,2-tetrafluoropropane, 3-chloro-1,
2,2,3-tetrafluoropropane, 3-chloro-1
, 1,1,2,2-pentafluoropropane, 1-chloro-1,1,2,2,3-pentafluoropropane, 1
, 3-dichloro-2,2,3-trifluoropropane,
3-chloro-1,2,2-trifluoropropane, 3,
3-dichloro-1,2,2,3-tetrafluoropropane, 1-chloro-1,1,2,2-tetrafluoropropane, 3,3-dichloro-1,2,2-trifluoropropane and 3- A degreasing detergent containing as an active ingredient at least one member selected from the group of chloro-2,2,3-trifluoropropanes. (2) Degreasing detergents contain hydrocarbons, alcohols,
The degreasing detergent according to claim 1, containing at least one selected from ketones, chlorinated hydrocarbons, and esters.