JPH02200789A - Dewaxing detergent - Google Patents

Abstract

PURPOSE:To produce a dewaxing detergent having a significant deterging effect by preparing a detergent contg. a specified chlorofluorohydrocarbon having a specified number of carbon atoms as an effective component. CONSTITUTION:A dewaxing detergent contg. at least one kind of 3C chlorofluorohydrocarbon selected among CF3CF2CHClF, CClF2CF2CHF2, CCl3CF2 CHCl2, CCl2FCF2CHCl2, CCl3CF2CHClF, CCl3CF2CHF2, CHCl2CF2CHCl2, CCl3CF2 CH2Cl, CCl2FCF2CH2Cl, CHCl2CF2CHClF, CCl3CF2CH2F, CCl3CF2CH3 and CHCl2 CF2CH2Cl as an effective component is prepd. At least one kind of org. solvent selected among hydrocarbons such as n-pentane, alcohols such as methanol, ketones such as acetone, chlorohydrocarbons such as methylene chloride, esters such as methyl formate, etc., may be added to the detergent by about 20-30wt.% in accordance with various purposes for which the detergent is used.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a degreasing cleaning agent used to remove oils adhering to metal parts processed using a metal working fluid. [Prior Art] Cutting oils are used in the cutting process of precision mechanical parts, electrical parts, etc., but in many cases, products cannot be manufactured if these oils remain attached. Therefore, in the finishing process of such parts, organic solvents are usually used for cleaning. 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, non-exposure, and has low toxicity (it also has excellent stability).In addition, it has the property of selectively dissolving various types of dirt without attacking base materials such as metals, plastics, and elastomers. Many of the products are composite parts made of metal, plastic, elastomer, etc. Therefore, from this point of view, R113
was advantageous.

[Problems to be Solved by the Invention] The present invention proposes that although conventionally used R113 has various advantages, it is suspected that it destroys ozone in the stratosphere and may even cause skin cancer. Therefore, the purpose of this invention is to provide a new degreasing detergent that has various advantages similar to R1 and R13 and can perform the same cleaning. [Means for solving the problem] J The present invention aims to achieve the above-mentioned objects.
The present invention provides a degreasing detergent containing a specific chlorofluorinated hydrocarbon having 3 carbon atoms as an active ingredient. The chlorofluorinated hydrocarbons of the present invention include CF, CF, CHCQF (R226ea), CCQF
-CF-CHF* (R226eb), CC('5CF
tC)ICG! -(R222c), CCQ-FCF
*C) ICQ* (R223ea). CCQsCFsCHCQF (R223eb), CCQi
CFaCHF* (R224cc), C)ICII)l
CF, CMQ! (R232ca,), CC(
25cFtcH2CQ (R232cb), CCQ, F
CF, CM*CQ (R233eb), CH
C(2xcF x(:H(JF (R233ca), C
CQ, CFlCI(IF(R233CC), (:CG!
mcFicl1m (R242cbLC)ICQiCF
xC) One or a mixture of two or more selected from hydrogen-containing chlorofluorinated hydrocarbons such as IiCQ (R242ea) 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,
At least one kind selected from organic solvents such as chlorinated hydrocarbons and esters can be contained. The content of these organic solvents in the degreasing detergent is 0 to 50% by weight, preferably 1.0 to 40% by weight, and more preferably 20 to 30% by weight. When the mixture of the chlorinated hydrocarbon and organic solvent of the present invention has an azeotropic composition, it is preferable to use the azeotropic composition. The hydrocarbons are preferably linear or cyclic saturated or unsaturated hydrocarbons having 1 to 15 carbon atoms, <, 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-trimethylpentane, 2,2.3-trimethylpentane, isooctane, nonane, 2,2.5-1-dimethylhexane, decane, dodencane, ■-pentene, 2-pentene,
1-hexene, 1-octene, 1-nonene, 1-decene, cyclopentane, methylcyclopentane, cyclohexane, methylcyclohexane. It is selected from ethylcyclohexane, bicyclohexane, cyclohexene, α-pinene, dipentene, decalin, tetralin, amidino, amylnaphthalene, and the like. More preferred are n-pentane, n-hexane, cyclohexane, n-hebutane and the like. The alcohols are preferably linear or cyclic saturated or unsaturated alcohols having 1 to 17 carbon atoms, such as methanol, ethanol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, 5ee-butyl alcohol, Isobutyl alcohol, tert-butyl alcohol, pentyl alcohol, 5ec-amyl alcohol, 1-ethyl-1-propatol, 2-methyl-
1-butanol, isopentyl alcohol, tert-
Pentyl alcohol, 3-methyl-2-butanol, neopentyl alcohol, l-hexanol, 2-methyl-1-pentanol, 4-methyl-2-pentanol, 2-ethyl-1-butanol, ■-heptyl alcohol tools, 2
-heptatool, 3-heptatool, 1-octatool, 2-octatool, 2-ethyl-]-hexanol,
■-nonanol, 3.5.5-) riftyl-1-hexanol, l-decanol, 1-undecanol, I-
Dodecanol, allyl alcohol, propargyl alcohol, benzyl alcohol, cyclohexanol, 1-
Methylcyclohexanol, 2-methylcyclohexanol, 3-methylcyclohexanol, 4-methylcyclohexanol, α-terpineol, avinitinol, 2,6-dimethyl-4-heptatool, trimethylnonyl alcohol, tetradecyl alcohol, heptadecyl alcohol etc. More preferred are methanol, ethanol, isopropyl alcohol and the like. Acetone, methyl ethyl ketone, 2-pentanone, 3-pentanone, 2-
Hexanone, methyl-〇-butylketone, methylbutylketone, 2-heptanone, 4-heptanone, diisobutylketone, acetonylacetone, mesityl oxide, holon, methyl-〇-amylketone, ethylbutylketone, methylhexylketone, cyclohexanone, methyl It is selected from cyclohexanone, isophorone, 21.4-bentanedione, diacetone alcohol, acetophenone, fencheon, and the like. 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. , l trichloroethane, 1,1.2-
Trichloroethane, l, 1.1.2-tetrachloroethane, 1,1,2.2-tetrachloroethane, pentachloroethane, 1.1-dichloroethylene, 1,2-dichloroethylene, trichlorethylene, It is selected from tetrachlorethylene and the like. More preferably methylene chloride, 1, l, ! - trichloroethane, trichlorethylene, tetrachlorethylene, etc. The esters are preferably those represented by the following general formula: R, -COO-R,, R, -C-
R, -COO-R,. Ryo C0OR. (Here, l (i, Rs, Rs, R4, Rs, Rs are H, 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, ff1ec-butyl acetate,
Pentyl acetate, impentyl 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, isopentyl butyrate, isobutyl isoacetate, ethyl 2-hydroxy-2-methylpropionate, butyl stearate, pentyl stearate, methyl benzoate, ethyl benzoate, propyl benzoate, benzoic acid Butyl, isopentyl benzoate, benzyl benzoate, ethyl abietate,
Benzyl abietate, bis-2-ethylhexyl adipate, γ-butyrolact, diethyl chelate, dibutyl chelate, dipentyl oxalate, 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, stabilizers, or hydrogen-containing chlorinated fluorinated hydrocarbons that have little effect on ozone destruction. As a cleaning method, conventional methods such as hand wiping, dipping, spraying, shaking, ultrasonic cleaning, and steam cleaning can be used. [Example J Examples 1 to 18 A cutting oil cleaning test was conducted using the degreasing detergent shown in Table 1 below. S II S-304 test piece (25+o+o
After immersing a test piece (30 mm x 2 m 111 thick) 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. [Effects of the Invention] 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 the conventionally used R113, it has a moderate dissolving power.
Composite parts made of metal, plastic, elastomer, etc. can be degreased and cleaned without adversely affecting them. Figures in Table 1) indicate the mixing ratio [wt%] 0; Good removal △; Trace amount remaining ○; Very good ×; Significant residual

Claims (2)

[Claims] (1) CF_3CF_2CHClF, CClF_2CF
_2CHF_2, CCl_3CF_2CHCl_2, C
Cl_2FCF_2CHCl_2, CCl_3CF_2
CHClF, CCl_3CF_3CHF_2, CHCl
_2CF_2CHCl_2, CCl_3CF_3CH_
2Cl, CCl_3FCF_3CH_2Cl, CHCl
_2CF_2CHClF, CCl_3CF_2CH_2
F, CCl_3CF_2CH_3, CHCl_2CF_
A degreasing detergent containing at least one member selected from the group 2CH_2Cl as an active ingredient. (2) Degreasing detergents contain hydrocarbons, alcohols,
The degreasing detergent according to claim 1, containing at least one selected from ketones, chlorinated hydrocarbons, and esters.