JPH02221388A - Degreasing detergent - Google Patents

Abstract

PURPOSE:To produce a new degreasing detergent not breaking an ozone layer by incorporating unsatd. chlorofluorohydrocarbon having a specified number of carbon atoms as an effective component. CONSTITUTION:A degreasing detergent contg. one or more kinds of 3C unsatd. chlorofluorohydrocarbons such as 1-chloro-2-fluoropropene, 2,3-dichloro-3,3- difluoropropene, 1,1-dichloro-3,3,3-trifluoropropene and 1,2-dichloro-3,3,3- trifluoropropene as effective components is prepd. At least one kind of org. solvent selected among hydrocarbons such as n-pentane, alcohols such as methanol, ketones such as acetone, halogenated hydrocarbons such as dichloromethane, esters such as methyl acetate, etc., may be incorporated into the detergent by about 0-50wt.%. The detergent is fit to degrease metal parts, etc.

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 and the like processed using a metal processing oil.

[Conventional technology] Cutting oils are used in the cutting process of precision mechanical parts, electrical parts, etc., but if these oils remain attached, the products often cannot be produced. 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.
．． 1,2-Trichloro-1,2,2-trifluoroethane (hereinafter referred to as R113) is widely used.

R113 is nonflammable, has low toxicity, and has excellent stability.

Moreover, it has the property of selectively dissolving various stains without attacking base materials such as metals, plastics, and elastomers. Generally, many of the items to be washed are composite parts made of metals, plastics, elastomers, etc. Therefore, R113 was advantageous from this point as well.

[Problems to be solved by the invention] Despite the fact that conventionally used R113 has various advantages, it has a long lifetime in the troposphere and diffuses into the stratosphere, where it is decomposed by sunlight and becomes chlorine. The use of R113 has been regulated because it generates radicals that cause a chain reaction with ozone and destroy the ozone layer.

Therefore, in response to this, it is an object of the present invention to provide a new degreasing detergent that has various advantages similar to R113 and can perform equivalent cleaning.

[Means for Solving the Problems] The present invention has been made to achieve the above-mentioned objects, and
The present invention provides a degreasing detergent containing an unsaturated chlorinated fluorinated hydrocarbon having 3 carbon atoms as an active ingredient.The unsaturated chlorinated fluorinated hydrocarbon of the present invention includes 1-chloro-2- Fluoropropene (b, p, 59°C), 2
．． 3-dichloro-3,3-difluoropropene (b,
p, 57°C), 1.1-dichloro-3,3,3-trifluoropropene (b, p, 54°C), 1.2-
Dichloro-3°3,3-trifluoropropene (b,
p, 53°C), 1,3-dichloro-1,3,3-trifluoropropene (b, p, 57°C), 1,3-dichloro-2,3,3-trifluoropropene (b.

p, 67°C), 3.3-dichloro-1,1,3-trifluoropropene (b, p, 52°C), 3.3
-dichloro-2,3-difluoropropene (b, p,
One type or a mixture of two or more types selected from hydrogen-containing unsaturated chlorinated fluorinated hydrocarbons such as 54° C.) is preferred.

The degreasing detergent of the present invention may contain various other components depending on various purposes. For example, in order to increase the dissolving power, hydrocarbons, alcohols, ketones,
At least one kind selected from organic solvents such as halogenated hydrocarbons and esters can be contained. The content ratio of these organic solvents in the degreasing detergent is 0 to 50
% by weight, preferably 10-40% by weight, more preferably 20-30% by weight.0 If the mixture of the chlorinated fluorinated hydrocarbons and organic solvent of the present invention has an azeotropic composition, the Particular preference is given to the use in azeotropic compositions.

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, neohexane, 2,3-dimethylbutane, 3-methylpentane,
n-hebutane, isohebutane, 3-methylhexane, 2
．． 4-dimethylbencune, n-octane, 2-methylhebutane, 3-methylhebutane, 4-methylhebutane, 2
．． 2-dimethylhexane, 2.5-dimethylhexane,
3.3-dimethylhexane, 2-methyl-3-ethylpentane, 3-methyl-3-ethylpenkune, 2.3.3
- trimethylpentane, 2.3.4-trimethylpentane, 2.2.3- trimethylpentane, isooctane, nonane, 2.2.5-) dimethylhexane, decane, dodecane, 1-pentene, 2-pentene, 1- Hexene, 1-octene, 1-nonene, 1-decene, cyclopentane, methylcyclopentane, cyclohexane, methylcyclohexane, ethylcyclohexane, bicyclohexane, cyclohexene, α-pinene, dipentene,
It is selected from decalin, tetralin, amidino, amylnaphthalene, etc. More preferred are rhopentane, neohexane, 2,3-dimethylbutane, n-hexane, cyclopentane, cyclohexane, n-hebutane, and the like.

The alcohols are preferably chain or cyclic saturated or unsaturated alcohols having 1 to 17 carbon atoms, such as methanol, ethanol, n-propyl alcohol, isopropyl alcohol, and n-butyl alcohol. -ol, isobutyl alcohol, 5ee-butyl alcohol, tert-butyl alcohol, pentyl alcohol, 5ec-amyl alcohol, 1-ethyl-1-propanol, 2-methyl-
1-butanol, isopentyl alcohol, tert-
Pentyl alcohol, 3-methyl-2-butanol, neopentyl alcohol, 1-hexanol, 2-methyl-1-pentanol, 4-methyl-2-pentanol,
2-ethyl-1-butanol, 1-heptatool, 2-
heptatool, 3-heptatool, 1-octatool,
2-octatool, 2-ethyl-1-hexanol, 1
-nonanol, 3.5.5-) trimethyl-1-hexanol, 1-decanol, 1-undecanol, 1-dodecanol, allyl alcohol, propargyl alcohol
benzyl alcohol, cyclohexanol, 1-methylcyclohexanol, 2-methylcyclohexanol, 3-methylcyclohexanol, 4-methylcyclohexanol, α-terpineol, a-nitinol,
It is selected from 2,6-dimethyl-4-heptatool, trimethylnonyl alcohol, tetradecyl alcohol, heptadecyl alcohol and the like. More preferred are methanol, ethanol, isopropyl alcohol and the like.

1 to 9 saturated or unsaturated hydrocarbon groups) are preferred, including acetone, methyl ethyl ketone, 2-pentanone, 3-pentanone, 2-hexanone, methyl butyl ketone, methyl isobutyl ketone,
2-heptanone, 4-heptanone, diisobutyl ketone, acetonylacetone, mesityl oxide, holon, methyl-n-amyl ketone, ethyl butyl ketone, methylhexyl ketone, cyclohexanone, methylcyclohexanone, isophorone, 2,4-pentanedione, di It is selected from acetone alcohol, acetophenone, fenchen, etc. More preferred are acetone, methyl ethyl ketone and the like.

The halogenated hydrocarbons are preferably saturated or unsaturated halogenated hydrocarbons having 1 to 4 carbon atoms, such as dichloromethane, carbon tetrachloride, chloroform, 1.1-dichloroethane, 1.2-dichloroethane, 1,1 .1-trichloroethane, 1.1.2-trichloroethane, 1.
1.1.2-tetrachloroethane, 1.1.2.2-tetrachloroethane, pentachloroethane, 1,1-dichloroethylene, trans-1,2-dichloroethylene, cls-1,2-dichloroethylene, trichlorethylene, tetrachloroethylene, l -chloropropane, 2
-Chloropropane, 1-bromopropane, 2-bromopropane, etc. More preferably dichloromethane, 1.1.1-trichloroethane, tr
ans-1,2-dichloroethylene, cis-1,2-
These include dichloroethylene, trichloroethylene, tetrachloroethylene, 2-bromopropane, and the like.

As the esters, those represented by the following general formula are preferable, including R+ -CO0-Re, COORa R1-C0O-R2-COO-R3, (C0OR+)2
, ◎-〇〇0R+ COOR2 (here, R1, R2, R3, R4, Rs, Re is H 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, 5ee-hexyl acetate, 2 -Ethyl butyl acetate, 2-ethylhexyl acetate, cyclohexyl acetate, benzyl acetate, methyl propionate, 10 ethyl pionate, butyl propionate, isopentyl propionate, methyl butyrate, ethyl butyrate, butyl butyrate, isopentyl butyrate, isobutyl isobutyrate, 2 -Hydroxy-2
- Ethyl methylpropionate, butyl stearate, pentyl stearate, methyl benzoate, ethyl benzoate, propyl benzoate, butyl benzoate, isopentyl benzoate, benzyl benzoate, ethyl abietate, benzyl abietate, bis adipate - 2-ethylhexyl, γ-butyrolact, diethyl oxalate, dibutyl oxalate, dibentyl oxalate, diethyl malonate, dimethyl maleate, diethyl maleate, dibutyl maleate, dibutyl tartrate, tributyl citrate, dibutyl sebacate, bis sebacate -2-ethyl, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, bis-2-ethylhexyl phthalate, dioctyl phthalate, and the like. More preferably methyl acetate,
Ethyl acetate, etc.

The degreasing detergent of the present invention may be further 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, Conventional methods such as dipping, spraying, shaking, ultrasonic cleaning, and steam cleaning can be used.

[Examples] Examples 1 to 13 Cutting oil cleaning tests were conducted using degreasing detergents shown in Table 1 below.

5O8-304 test piece (25nuaX 30m
(m x 2 mm thick) was immersed in spindle oil, then immersed in a degreasing detergent for 5 minutes, and then taken out and visually observed for the residual status of spindle oil on the surface of the test piece. The results are shown in Table 1.

Table 1 [Effects of the Invention] The degreasing detergent of the present invention has an excellent cleaning effect on oils and fats, as is clear from the Examples. Moreover, since it has a fast dissolving power similar to the conventionally used R113, it can degrease and clean composite parts made of metals, plastics, elastomers, etc. without adversely affecting them.

Claims (1)

[Claims] 1. A degreasing detergent containing an unsaturated chlorinated fluorinated hydrocarbon having 3 carbon atoms as an active ingredient. 2. The unsaturated chlorinated fluorinated hydrocarbon is 1-chloro-2-fluoropropene, 2,3-dichloro-3,3-difluoropropene, 1,1-dichloro-3,3,3-trifluoropropene, 1 , 2-dichloro-3,3,3-trifluoropropene, 1,3-dichloro-1,3,3-trifluoropropene, 1,3-dichloro-2,3,3-trifluoropropene, 3,3 -dichloro-1,1,3-
The degreasing detergent according to claim 1, which is trifluoropropene or 3,3-dichloro-2,3-difluoropropene. 3. The degreasing detergent according to claim 1, wherein the degreasing detergent contains at least one selected from hydrocarbons, alcohols, ketones, halogenated hydrocarbons, or esters. .