TW200411044A - Solvent compositions - Google Patents

Abstract

This invention provides an azeotropic solvent composition consisting of 38.2 % (by mass) of 1,1,1,2,2,3,3,4,4-nonafluorohexane and 61.8 % (by mass) of trans-1,2-dichloroethylene; and a solvent composition which comprises 1,1,1,2,2,3,3,4,4-nonafluorohexane and trans-1,2-dichloroethylene and in which the content of 1,1,1,2,2,3,3,4,4-nonafluorohexane is 25 to 75 % (by mass) based on the total amount of 1,1,1,2,2,3,3,4,4-nonafluorohexane and trans-1,2-dichloroethylene.

Description

200411044 (1) 发明. Description of the invention [Technical field to which the invention belongs] The present invention relates to a grease, a printed circuit board, which can be used to remove articles attached to electronic parts, precision mechanical parts, glass substrates, etc., etc. Non-combustible solvent composition for stains such as flux and dust. [Previous technology] In the past, precision cleaning in the precision machinery industry, optical machinery industry, electrical and electronic industry, and plastic processing industry was required to remove oil, plastic, dust, paraffin, etc. attached to the manufacturing process, so it was incombustible. In addition, fluorinated solvents with excellent chemical and stability properties and the ability to dissolve oils and fats can be widely used, such as chlorofluorocarbons (hereinafter referred to as HCFC) (hereinafter referred to as HCFC). Also, the HCFC's ozone destruction coefficient is not 0, so it has the problem of abolishing production in the advanced countries in 2,020 years. In view of this, although 1,1,252,3,3,4,4-nonafluorohexane ((^ 3 (〇? 2) 3 (:) ^ 2 (: 113) has an ozone destruction number of 0 and For the fluorine-based solvents with a small influence on the global environment, it has the problem of low solubility of oils and fats. It is also known that 112, 2, 3, 3, 4, 4-nonafluorohexane 50 to 99% by weight and methyl If ] ~ 50% by weight of the mixed solvent composition (refer to Japanese Patent Application Laid-Open No. 7-17 3498), 3,3,4,4-Ninefluorohexane 50 ~ 99% by weight and ethanol 丨 ~ 5 0% by weight of a mixed solvent composition (refer to Japanese Patent Application Laid-Open No. 7-1 8 296), ^, ^^ nonafluorohexane 50 to 99% by weight and propanol 1 to 50% by weight A mixed solvent of 4- (2) (2) 200411044 (refer to Japanese Patent Application Laid-Open No. 7-62 3 94). It was revealed that these compositions can be used for cleaning greases and fluxes. Therefore It has been revealed that these compositions may contain trans-1,2-dichloroethylene if necessary. On the other hand, trans-1,2-dichloroethylene oils have a high dissolving power, but ignite If the temperature is 4 ° C, it is low and there is danger of fire, etc. Handle complicated problems. [Summary of the invention] The present invention provides a 1,1,1,2,2,2,3,3 5 4,4-nonafluorohexane 6 8 · 2% (quality basis. The same below.) And An azeotropic solvent composition made of 61.8% of trans-1,2-dichloroethylene. The present invention provides a solvent composition containing 1,1,152,2,3; 354,4-nonafluorin Alkane and trans-1,2-dichloroethylene are characterized in that for the total amount of 1515152,253,35454-nonafluorohexane and trans-], 2-dichloroethylene, 2,3,3, 4,4-Ninefluorohexane is 25 to 75%. ≪ Best mode for carrying out the present invention > The non-combustible azeotropic composition system of the present invention is 1,1,1,2,2,3,3,4 3,4% nonafluorohexane and 61.8% trans-1,2-dichloroethylene. The boiling point of the azeotropic solvent composition is 45 ± 1 ° C under a pressure of 10Ohpa. The solvent of the present invention The composition system contains 1,1 51,2,2,2,3,3,4,4, nonafluorohexane and trans-1,2-dichloroethylene, which is characterized by], 1,1525253 ^ 54, Combination of 1,19-fluorofluorohexane and trans-1,2-dichloroethylene (3) (3) 200411044 Quantitatively, 1,1,1,2,2,3,3,4,4, 1 nine The content of hexane is 25 to 75%. The solvent composition of the present invention is substantially only 1,1,1,25,525,353,4,45-nonafluorohexane and trans-1], 2 dichloroethylene In the case of a solvent composition made of 2 components, if the amount of 1,1,1,2,5,2,3,354,4, and nonafluorohexane is 25% or more, there is no ignition point; the right is 75% The following 'has sufficient detergency. If the amount of 1,1,1,2,2,3,354,45-nonafluorohexane is 28 ~ 48%, it is more preferable. If the amount of the 1,1,1,2,2,5,3,3,4,4, -nonafluorohexane is 2 8 ~ 4 8%, the composition of the solvent composition will change little, and it is used in common. The azeotropic solvent composition is the same as the azeotropic solvent composition. The solvent composition of the present invention is preferably only 15.1,1,2,253; 3,4,4,19,9,9,5,9,9,9,9,9,9,9,9,9,9,5,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,5,9,9,5,9,9,9,9,5,9,9,9,9,5,9,9,9,9,5,9,9,9,5,9,9,9,9,5,9,9,9,9,5,9,9,9,9,5,9,9,9,5,9,9,4,9,9,9,5,1,9,5,9,9,9 九 (己 · 氟 氟 己) are preferable, but further containing other compounds are more preferable. Other components include, for example, at least one selected from the group consisting of hydrocarbons, alcohols, ketones, and halogenated hydrocarbons (however, except for Thirteen Fluorine and trans-1, 2-1, 2-chloroethylene.) Ethers and esters Groups of classes. The content ratio of these other components in the solvent composition is preferably 20% by mass or less, and more preferably 10% by mass or less. Cigarettes include, for example, chained or cyclic saturated or unsaturated hydrocarbons having 5 to 15 carbon atoms, and n-pentane, h methylbutane, n-hexane, methylpentane, 2, 2 · Dimethyl butane, 2,3-dimethylbutane, n-pentane, plant methylhexane, 3-methylhexane, 2,4-dimethylpentane, n-octane, 2-methyl Heptane, 3-methylheptane, 4-methylheptane '2,2-dimethylhexane' 2,5-dimethylhexane, 3,3-dimethylhexane, 2, -Methyl-3_ethylpentanyl, methyl-G-(4) (4) 200411044 yl-3-ethylpentane, 2,353-trimethylpentane, 2,3,4 · trimethylpentane , 2,253-trimethylpentane, 2-methylheptane, 2,254_trimethylpentane, 2,2,5-trimethylhexane, decane, n-dodecane, pentene, 2- Pentene, 1-hexene, heptene, 1-nonene, b-decene, cyclo-n-pentane, methylcyclopentane, cyclohexane, methylcyclohexane, ethylcyclohexane, dicyclohexane , Cyclohexane, cyclopentene, dipentene, decalin, naphthyl, amine naphthalene, and the like. More preferred are hydrocarbons having 5 to 7 carbon atoms such as n-pentane, cyclopentane, n-hexane, cyclohexane, and n-heptane. Examples of the alcohols include chain or cyclic saturated or unsaturated alcohols having 1 to 16 carbon atoms. Methanol, ethanol, n-propanol, isopropanol, n-butanol, second butanol, Isobutanol, tertiary butanol, 1-pentanol, 2-pentanol, 1-ethane-propanol, 2-methylbutanol, 3-methyl-b-butanol, 3-methyl-2_ _, Neopentyl alcohol, 1-hexanol, 2-methyl-pentyl alcohol, 4-methyl-2 -pentyl alcohol, 2-ethyl-1 -butanol, diheptanol, 2-heptanol, 3 -Heptanol, 1-octanol, 2-octanol, 2-ethyl-buhexanol, 1-nonanol, 3,5,5-trimethylhexanol, 1-decane I, 1-undecane Alcohol, dodecanol, allyl alcohol, propynyl alcohol, benzyl alcohol, oxohexanol, 1-methylcyclohexanol, 2-methylcyclohexanol, 3-methylcyclohexanol, methyl ring Hexanol, α-terpineol, 2,6-dimethyl-4-heptanol, nonanol, tetradecanol and the like. More preferred are alkanols having a carbon number of 3 to T, such as methanol, ethanol, and isopropanol. As the ketones, chain or cyclic saturated or unsaturated ketones having 3 to 9 carbon atoms are preferred. Specific examples include acetone, methyl ethyl ketone, 2-pentanone, and 3-pentanone. , Octahexanone, methyl isobutyl ketone, 2-heptanone, 3-heptanone, t-heptanone, diisobutyl ketone, isopropylacetone, phorone, 2-octanone, -7- ( 5) (5) 200411044 cyclohexanone, methylcyclohexanone, isophorone, 2,4-pentanedione, 2,5-hexanedione, diacetone alcohol, formamidine acetone, etc. More preferred are ketones having 3 to 4 carbon atoms such as acetone and methyl ethyl ketone. As halogenated tobaccos, the most preferred is carbon number] ~ 6 of saturated or unsaturated chlorinated or chlorinated fluorinated hydrocarbons. Examples include dichloromethane, 1,1-dichloroethane, and 1,2-dichloro. Ethane, 15l, 2-trichloroethane, m2-tetrachloroethane, 1,1,2,2-tetrachloroethane, pentachloroethane, 丨 dichloroethylene, cis-n — 'Qi Yi Xi, Di Qi Yi Su, Tetrachloroethylene bromide, 1,2-chlorochloropropane, dichloropentafluoropropane, dichlorofluoroethane, decafluoropentane, etc. More preferred are chlorinated hydrocarbons having 1 to 2 carbon atoms such as methylene chloride, trichloroethylene, and tetrachloroethylene. The ethers are preferably chain or cyclic saturated or unsaturated ethers having 2 to 8 carbon atoms, and examples thereof include diethyl ether, dipropyl ether, diisopropyl ether, dibutyl ether, Ethyl vinyl ether, vinyl butyl ether, anisole, phenyl ether, methyl anisole, dioxane, furan, methylfuran, tetrahydrofuran and the like. More preferred are ethers having 4 to 6 carbon atoms such as diethyl ether, diisopropyl ether, dioxane, and tetrahydrofuran. As the esters, chained or cyclic saturated or unsaturated vinegars having a carbon number of 2 to 9 are preferred. Specifically, for example, methyl acetate, ethyl acetate, and propyl formate are mentioned. , Butyl formate, isobutyl formate, pentyl formate, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, second butyl acetate 'pentyl acetate, Methoxybutyl acetate, second hexyl acetate, 2-ethylbutyl acetate, 2-ethylhexyl acetate, cyclohexyl acetate, benzyl acetate, methyl propionate, ethyl propionate, propionic acid Butyl, methyl butyrate, ethyl butyrate, butyl butyrate, isobutyl butyrate, 2-but-8- (6) (6) 200411044 ethyl-2-methylpropionate, benzoin Methyl ester, ethyl benzoate, propyl benzoate, butyl benzoate, benzyl benzoate, r-butyrolactone, diethyl nitrate, dibutyl nitrate, dipentyl nitrate, diethyl malonate Esters, dimethyl maleate, diethyl maleate, dibutyl maleate, dibutyl tartrate, tributyl citrate, dibutyl sebacate, dimethyl phthalate, benzene dicarboxylic acid Diethyl, dibutyl benzene and the like. More preferred are esters having 3 to 4 carbon atoms such as methyl acetate and ethyl acetate. In addition, mainly to improve stability, for example, one or two or more of the compounds listed below may be added to the solvent composition of the present invention in a range of 0.001 to 5% by mass. Nitromethane, nitroethane, nitropropane, nitrobenzene and other nitro compounds. Diamines such as diethylamine, triethylamine, isopropylamine, and n-butylamine. Phenol, o-phenol, m-phenol, p-phenol, thymol, pt-butylphenol, third butyl catechol, catechol, isoeugenol, o-methoxyphenol, bisphenol, salicylic acid Phenols such as amines, benzyl salicylate, methyl salicylate, 2; 6-di-t-butyl-P-cresol, etc. 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-methylphenyl) -5chlorobenzene Triazoles such as benzotriazole, 1,2,3-benzotriazole, 1-[(N, N-fluorene-2-ethylhexyl) aminomethyl] benzotriazole and the like. The solvent composition and the non-combustible azeotropic solvent composition of the present invention are the same as conventional dichloropentafluoropropane-based compositions, and are most suitable for use in various applications. Specific applications include applications such as cleaning agents for removing articles to which stains are attached, coating solvents for various compounds, and extraction solutions. As the material of the above-mentioned items -9- (7) (7) 200411044 Examples of the quality are glass, ceramic, plastic, rubber, or metal. Specific examples of the products include ICs, micromotors, relays, bearings, optical lenses, printed circuit boards, and glass substrates of electronic, electrical, mechanical, precision machinery, appliances, and optical components. The stain to be attached to the article may be, for example, a stain used to manufacture an article or a component constituting the article, and the stain which must be removed at the end or a stain to be attached to the article when used. Examples of the stain-forming substance include greases such as lubricants, mineral oils, waxes, and oil-based inks, fluxes, and dust. As the method for removing the above-mentioned stains, methods such as hand rubbing, dipping, spraying, shaking, ultrasonic cleaning, steam cleaning, or a combination of these methods can be adopted. The solvent composition of the present invention can adjust the dissolving power of stains and the like by changing the mixing ratio. [Embodiments] < Examples > Examples 1 to 3, 6 to 8, 1 2 to 1 4; [8 to 2 0, 2 2 examples, 4 to 5, 9 to 1 1, 1 5 ~ 1 7, 2 1 are comparative examples. 11-569: 1,1,1,2,2,353,5454-nonafluorohexane, 10 € £: trans-1,2-dichloroethylene. [Examples 1 to 5] A solvent composition made using the composition described in Table 1 and based on AS D 92-90 described in the Cleveland open flame tester -10- (8) (8) 200411044 Method to determine the ignition point of room temperature. The results are shown in Table 1.

Example R-569 (% by mass) tDCE (% by mass) Ignition point 1 75 25 Μ y \\\ 2 38.2 6 1.8 None 3 25 75 ίκ j \ w 4 80 20 4® 5 2 0-80 _ Yes [Example 6 ~ 1 1] A solvent composition 'made with the composition described in Table 2 was used to perform a washing test on the metalworking oil. That is, a test piece (25 mm x 30 mm x 2 mm) of SUS-304 was immersed in a metal working oil: Ten Eight Oil (manufactured by Japan Klins Co., Ltd.), and the metal working oil was adhered to it. . After the test piece was taken out of the metalworking oil, it was moisturized in the solvent composition at 40 ° C and washed with ultrasound for 5 minutes. The degree of removal of the metalworking oil was evaluated visually. The results are shown in Table 3. In the table, 0: good removal, Δ: slight residual, χ: residual. -11-(9) 200411044 Table 2 Example R-569 (mass%) tDCE (mass%) Evaluation 6 75 25 〇 7 3 8.2 61.8 〇 8 25 75 〇 9 80 20 Δ 10 100 0 X 11 0 100 ^ 〇

[Example 1 2 to 1 7]

A solvent composition prepared using the composition described in Table 3 was used to perform an adjuvant cleaning test. That is, the flux-type JS-64ND made by Honghui Co., Ltd. was coated on the PCB-type electrode substrate of IPCB-2 25, dried at 100t for 10 minutes, and immersed in a solder bath at 260 ° C for 3 seconds and soldered. welding. After that, it was allowed to stand at room temperature for 2 hours, and then the 栉 -shaped electrode substrate was kept at 40 ° C. 〇, fe: stained in the cereal composition contained in Table 3 # after ultrasonic cleaning & minutes. The degree of removal of the flux was evaluated visually. The results are shown in Table 4. In the table, 0: Good removal, Δ: A small amount of white residue remained, and x: A white residue remained. -12- (10) 200411044 Table 3 Example R-569 (mass%) tDCE (mass%) Evaluation 12 75 25 〇 13 38.2 6 1.8 〇 14 25 75 〇 15 8 0. 20 △ 16 100 0 X 17 0 100 〇

[Example 1 8 to 2 2] The solvent composition described in Table 4 was placed in a 3-tank washing machine, and the solvent in the water separation tank after 8 hours of operation was measured by gas chromatography. The composition ratios of R-5 6 9 in the measurement results are shown in Table 4.

-13- (11) (11) 200411044

Example Composition ratio (mass%) before washing machine operation R-5 6 9 R-569 tDCE composition ratio (mass%) after 8 hours operation 18 28.0 62.0 28.9 19 38.2 6 1.8 38.2 20 48.0 52.0 47.3 2 1 2 〇.80.0 23.2 22 58.0 4 2.0 49.8 [Example 2 3] After adding R-5 69 and tDCE to the Osmium gas-liquid equilibrium device, and the temperature of the gas phase and liquid phase is fixed, take the gas phase and liquid phase A gas-liquid equilibrium diagram shown in FIG. 1 was prepared from the sample by the result of gas chromatography analysis. The intersection of the dotted line and the solid line in Figure 1 is an azeotropic composition. That is, it can be found that the ratio of R 5 6 9 to tDCE, and the mass ratio is the azeotropic composition in R-569 / tDCE = 38.2 / 61.8. The solvent composition of the present invention, especially an azeotrope-like or azeotrope-like composition, is cleaned or distilled using steam, and there is no change in composition even if it is recycled, and there is no change in detergency and various physical properties. Therefore, no major changes in the prior art are required. In addition, the azeotropic composition or a composition close to the composition of the solvent composition of the present invention, through steam washing and distillation, has little or no change even if it is recycled, so it can be the same as conventional R-2 2 5 etc. How to use -14- (12) 200411044, and has the advantages of excellent cleaning performance, without the need for major changes in the previous technology. [Schematic description] Figure 1 Gas-liquid equilibrium diagram of R- 5 6 9 / tDCE.

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Claims (1)

(1) 200411044 Scope of patent application 1. An azeotropic solvent composition characterized by 1,1,1,2,253,3,4,45 —Ninefluorohexane 38.2% (mass basis) and trans-1 , 2-Dichloroethylene 6 1 · 8% (quality basis). 2. A solvent composition containing 1, ^ 2,2,3,3,4,4, -nonafluorohexane and trans-1,2-dichloroethylene, characterized in that for 1,1, In terms of the total amount of 1,2,2,3,3,4,4,19-Fluorine House and trans-1,2-dichloroethylene, 1,1,12,2,353,454 The content is 25 to 75% (quality basis). 3. For the solvent composition in the second item of the patent application, the content of 1,151 5 2,2 5 3,3 5454, and nonafluorohexane is 28 ~ 48% (quality standard). 4. The solvent composition according to item 2 or item 3 of the patent application scope, wherein one of them contains at least one selected from the group consisting of hydrocarbons, alcohols, ketones, halogenated hydrocarbons (however, except for tridecanefluorohexane and trans-1 , 2-Dichloroethylene, ethers and esters in other groups. 5. If the solvent composition of the scope of patent application item 4, the content of other components is less than 20% by mass. 6. If the patent is applied for The solvent composition in the range of item 2 or item 3 is made of only 1,1,1,2,2,3,354,4, -nonafluorohexane and trans-1,2-dichloroethylene.- 16-