CN113710788A - Solvent composition and use thereof - Google Patents

Abstract

The present invention relates to a solvent composition which is a solvent composition having low environmental load and excellent solubility in a resin or the like, and which contains (a) p-chlorotrifluoromethylene and optionally 1 or more (B) other components selected from the group consisting of: (b1) nitro compounds, (b2) ethers, (b3) esters (excluding (b2) ethers), (b4) alcohols (excluding (b2) ethers), (b5) amide compounds, (b6) chloroolefins, (b7) hydrofluoroolefins, (b8) hydrobromohydrocarbons, (b9) hydrofluorocarbons, (b10) hydrofluoroethers, (b11) hydrocarbons, (b12) chlorinated hydrocarbons (excluding (b6) chloroolefins, (b7) hydrofluoroolefins and (b11) hydrocarbons) and (b13) combinations of 1 or more selected from the group consisting of alkylbenzene sulfonic acids and their salts with sulfuric acid.

Description

Solvent composition and use thereof

Technical Field

The present invention relates to solvent compositions and uses thereof. In particular, the present invention relates to: a solvent composition, and a cleaning agent, an aerosol composition for cleaning, a solvent for a cured product of a resin, an adhesive for a cured product of a resin, and a coating agent for a resin, each using the solvent composition.

Background

A large amount of organic solvents including hydrocarbon solvents, such as heptane, 1,1, 1-trichloroethylene, which are halogenated as the case may be, are used as base solvents of the solvent composition used in the cleaning agent and the like. A large number of organic solvents including heptane described in patent document 1 are designated as Volatile Organic Compounds (VOCs).

Volatile Organic Compounds (VOCs) are a general term for organic chemical substances that are easily volatilized into the atmosphere at normal temperature and pressure. When Volatile Organic Compounds (VOCs) are released into the environment, suspended particulate matter and photochemical oxidants are generated, which may cause atmospheric pollution such as photochemical smog. It is noted that 90% or more of the photochemical oxidant is composed of ozone, and is called "tropospheric ozone" in order to distinguish it from "stratospheric ozone".

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 7-278029

Disclosure of Invention

Problems to be solved by the invention

In order to cope with environmental problems, a solvent composition having low environmental load is required which can reduce Volatile Organic Compounds (VOC) causing air pollution. Accordingly, an object of the present invention is to provide: a solvent composition having low environmental load and excellent solubility in resins and the like.

According to the findings of the inventors, it was found that: in U.S. EPA and GB38508-2020, p-chlorotrifluoromethane is a solvent that is not considered to be a VOC, and a solvent composition based on this solvent has low environmental load and excellent solubility in resins and the like.

The present invention has the following configuration.

[1] A solvent composition comprising (a) p-chlorotrifluoromethylene.

[2] The solvent composition according to [1], which comprises 1 or more of (B) other ingredients selected from the group consisting of: (b1) nitro compounds, (b2) ethers, (b3) esters (excluding (b2) ethers), (b4) alcohols (excluding (b2) ethers), (b5) amide compounds, (b6) chloroolefins, (b7) hydrofluoroolefins, (b8) hydrobromohydrocarbons, (b9) hydrofluorocarbons, (b10) hydrofluoroethers, (b11) hydrocarbons, (b12) chlorinated hydrocarbons (excluding (b6) chloroolefins, (b7) hydrofluoroolefins and (b11) hydrocarbons) and (b13) combinations of 1 or more selected from the group consisting of alkylbenzene sulfonic acids and their salts with sulfuric acid.

[3] The solvent composition according to [1], further comprising 1 or more selected from the group consisting of (b1) nitro compounds, (b5) amide compounds, (b6-1) hydrochloroolefins, (b7) hydrofluoroolefins, (b8) hydrobromohydrocarbons, (b9) hydrofluorocarbons, and (b10) hydrofluoroethers.

[4] The solvent composition according to [1], further comprising 1 or more selected from the group consisting of (b8) hydrobromohydrocarbon and (b6-1) hydrochloroolefin, (b8) is 1-bromopropane, and (b6) is trans-1, 2-dichloroethylene.

[5] The solvent composition according to [1], further comprising (b8) a hydrobromohydrocarbon, and 1 or more selected from the group consisting of (b1) a nitro compound, (b2-2) a cyclic ether (wherein (b2-3) epoxide is excluded) and (b2-3) epoxide, (b8) is 1-bromopropane.

[6] The solvent composition according to [4], further comprising (b2-1) an acyclic ether, (b2-1) propylene glycol monomethyl ether.

[7] The solvent composition according to [5], further comprising (b2-1) an acyclic ether, (b2-1) propylene glycol monomethyl ether.

[8] The solvent composition according to [1], further comprising 1 or more selected from the group consisting of (b5) amide compounds, (b5) N-methyl-2-pyrrolidone, 3-methoxy-N, N-dimethylpropionamide.

[9] The solvent composition according to [1], further comprising (b13) a combination of 1 or more selected from the group consisting of alkylbenzenesulfonic acids and salts thereof with sulfuric acid.

[10] The solvent composition according to [9], further comprising 1 or more selected from the group consisting of (b9) hydrofluorocarbons and (b10) hydrofluoroethers.

[11] The solvent composition according to any one of [1] to [10], wherein the content of the component (A) is 3 parts by weight or more and 100 parts by weight or less, based on 100 parts by weight of the total amount of the solvent composition.

[12] A cleaning agent for cleaning an object to be cleaned, which uses the solvent composition according to any one of [1] to [11], and to which at least 1 selected from the group consisting of oily stains, oils, fluxes, and uncured resins are attached.

[13] The cleaning agent according to [12], which is used as a cleaning agent for hand wiping.

[14] A cleaning aerosol composition comprising: [1] the solvent composition according to any one of [1] to [11], and a sparge gas.

[15] A cleaning method comprising spraying [14] a cleaning aerosol composition to perform cleaning.

[16] A cleaning agent used in a method for cleaning an object to be cleaned, which is the cleaning agent of [12], comprising the steps of: step (1A): immersing the object to be cleaned in the cleaning agent of [12 ]; and, a step (1B): and (3) generating a vapor containing the component (A) from the cleaning agent of [12], and bringing the generated vapor containing the component (A) into contact with the object to be cleaned.

[17] A solvent for a cured product of a resin, which uses the solvent composition according to any one of [1] to [11 ].

[18] The dissolving agent according to [17], wherein the resin is at least 1 selected from the group consisting of an acrylic resin, a polycarbonate resin, an acrylonitrile/butadiene/styrene resin, a silicone resin, a polyamide resin, a urethane resin, a polyacetal resin, an epoxy resin, a styrene resin and a polyvinyl chloride resin.

[19] An adhesive agent for a cured product of a resin, which uses the solvent composition according to any one of [1] to [11 ].

[20] The adhesive according to [19], wherein the resin is at least 1 selected from the group consisting of acrylic resins, polycarbonate resins, acrylonitrile/butadiene/styrene resins, silicone resins, polyamide resins, urethane resins, polyacetal resins, epoxy resins, styrene resins, and polyvinyl chloride resins.

[21] A coating agent for a resin, which is obtained by dissolving a cured product of the resin in a solvent composition according to any one of [1] to [11 ].

[22] The coating agent according to [21], wherein the resin is at least 1 selected from the group consisting of an acrylic resin, a polycarbonate resin, an acrylonitrile/butadiene/styrene resin, a silicone resin, a polyamide resin, a urethane resin, a polyacetal resin, an epoxy resin, a styrene resin and a polyvinyl chloride resin.

The present invention includes the following embodiments.

[1a] Use of the solvent composition according to any one of [1] to [11] as a cleaning agent for cleaning an object to be cleaned to which 1 or more selected from the group consisting of oily stains, oil, flux and uncured resin are attached, a solvent for a cured product of the resin, or an adhesive for a cured product of the resin.

[2a] A method for producing a cleaning agent for cleaning an object to be cleaned, a dissolving agent for a cured product of a resin, or an adhesive for a cured product of a resin, wherein the method uses the solvent composition according to any one of [1] to [11], and the object to be cleaned is adhered with at least 1 selected from the group consisting of oily stains, oil, flux, and uncured resin.

[3a] Use of the solvent composition according to any one of [1] to [11] in which a cured product of a resin is dissolved as a coating agent for the resin.

[4a] A method for producing a resin coating agent, comprising the steps of: a cured product of the resin is dissolved in the solvent composition according to any one of [1] to [11 ].

[5a] Use of an aerosol composition as a cleaning aerosol composition, the aerosol composition comprising: [1] the solvent composition according to any one of [1] to [11], and a sparge gas.

[6a] A method for producing an aerosol composition for cleaning, which comprises using an aerosol composition comprising a solvent composition according to any one of [1] to [11] and a propellant gas.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, there is provided: a solvent composition having low environmental load and excellent solubility in resins and the like.

Drawings

Fig. 1 is a diagram showing an outline of a cleaning system 1.

Fig. 2 is a diagram showing an outline of the cleaning system 2.

Fig. 3 is a diagram showing an outline of the cleaning system 3.

Fig. 4 is a diagram showing an outline of the cleaning system 4.

Detailed Description

(definition of terms)

The "(A) p-chlorotrifluoromethylene" may be referred to as "(A)" or "(A) component". The same applies to other components such as "(B) other component".

In the numerical range, "-" means values including both ends thereof. That is, "70 to 90 parts by weight" means "70 parts by weight or more and 90 parts by weight or less. In addition, "below" means "the same as or lower than" and "above" means "the same as or higher than".

[ solvent composition ]

The solvent composition comprises (A) p-chlorotrifluoromethylene. The solvent composition is excellent in solubility of a resin and the like. In the present specification, "resin or the like" means at least oil, flux, uncured resin or cured product of resin.

In addition, the solvent composition has low environmental load. The organic solvent cleaning agent specified in GB38508-2020 in China is not limited by GB38508-2020 if the VOC content in the composition is less than 900 g/L. In addition, the content of p-chlorotrifluoromethane which is considered not to be VOC can be subtracted when calculating the VOC content, and therefore, by combining p-chlorotrifluoromethane with various organic solvents, a cleaning agent which is not GB38508-2020 can be provided.

P-chloro-benzotrifluoride (A)

(A) The component (A) is a main agent of the solvent composition. Para-chlorotrifluoromethylene (CAS No.98-56-6) is also known as PCBTF (para-chlorotrifluoromethylene), para-chlorotrifluoromethylene, 4-chloro-alpha, alpha-trifluorotoluene, p-chlorotrifluoromethylene, para-chloro-alpha, alpha-trifluorotoluene, 1-chloro-4- (trifluoromethyl) benzene, and the like.

(A) Para-chlorotrifluoromethylene is not a VOC in U.S. EPA and Chinese regulation GB 38508-2020. Therefore, the solvent composition containing the component (a) as a main component has low environmental load.

The solvent composition may contain (A) a structural isomer or dichloro-substituted compound such as 2-chlorotrifluoromethylbenzene or 3, 4-dichlorotrifluoromethylbenzene which may be produced in the production process of p-chlorotrifluoromethyltoluene.

Examples of commercially available products of (a) p-chlorotrifluoromethylene include OXSOL100 (manufactured by Occidental co.

< (A) Components other than component (A) >

The solvent composition may contain (B) other components than the (a) component and (C) additives within a range not to impair the effects of the present invention. In addition, the solvent composition may contain impurities of the components (a), (B) and (C) as components other than the components (a), (B) and (C).

< (B) other component >

Examples of the other component (B) include (B1) nitro compounds, (B2) ethers, (B3) esters (excluding (B2) ethers), (B4) alcohols (excluding (B2) ethers), (B5) amide compounds, (B6) chloroolefins, (B7) hydrofluoroolefins, (B8) hydrobromohydrocarbons, (B9) hydrofluorocarbons, (B10) hydrofluoroethers, (B11) hydrocarbons, (B12) chlorinated hydrocarbons (excluding (B6) chloroolefins and (B11) hydrocarbons), and (B13) combinations of sulfuric acid with 1 or more selected from the group consisting of alkylbenzene sulfonic acids and salts thereof.

(b1) Nitro Compound

(b1) The nitro compound is not particularly limited as long as it has 1 or more nitro groups in the molecule. Examples of the component (b1) include nitroalkanes such as nitromethane, nitroethane, 1-nitropropane and 2-nitropropane. (b1) The component may be nitromethane.

(b2) Ether

The ether (b2) is an ether solvent containing a carbon atom, a hydrogen atom and an ether bond (-O-), and is optionally linear or branched, cyclic or acyclic. Examples of the component (b2) include (b2-1) acyclic ethers, (b2-2) cyclic ethers (excluding (b2-3) epoxides, and (b2-3) epoxides. Specific examples of the acyclic ether include dipropyl ether, diisopropyl ether, diethyl ether, diisobutyl ether, dibutyl ether, methyl tert-butyl ether, methyl cellosolve, ethyl cellosolve, isopropyl cellosolve, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, ethylene glycol monopropyl ether, diethylene glycol monopropyl ether, triethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, propylene glycol monomethyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monomethyl ether, propylene glycol monoethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monoethyl ether, propylene glycol monopropyl ether, dipropylene glycol monopropyl ether, tripropylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monobutyl ether, tripropylene glycol monobutyl ether, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, tripropylene glycol, diethylene glycol monobutyl ether, methyl butyl ether, methyl tert-butyl ether, methyl cellosolve, ethyl cellosolve, ethylene glycol monopropyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, propylene glycol monobutyl ether, and the like, Ethylene glycol dimethyl ether (1, 2-dimethoxyethane), diethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol diethyl ether, triethylene glycol dimethyl ether, diethylene glycol dibutyl ether, dimethoxy tetraethylene glycol, dipropylene glycol dimethyl ether, propylene glycol monomethyl ether acetate, diethylene glycol monobutyl ether acetate, diethylene glycol monoethyl ether acetate, ethylene glycol monophenyl ether, ethylene glycol methyl ether, ethylene glycol ethyl ether, 3-methoxy-3-methyl-1-butanol, diethylene glycol monohexyl ether, diethylene glycol ethyl methyl ether, dipropylene glycol ethyl methyl ether, and the like. Specific examples of the cyclic ether include tetrahydrofuran, methyltetrahydrofuran, 4-methyltetrahydropyran, 1, 4-dioxane, 1, 3-dioxolane, and the like. Specific examples of the epoxides include 1, 2-epoxybutane, epichlorohydrin, epibromohydrin, propylene oxide, cyclohexene oxide, pentene oxide, hexene n-oxide, heptene oxide, octene oxide, methyl glycidyl ether, ethyl glycidyl ether, isopropyl glycidyl ether, other alkyl glycidyl ethers, and alkyl glycidyl esters. (b2) The ingredient may be propylene glycol monomethyl ether.

Esters (b3) (excluding (b2) ethers)

Examples of the (b3) ester (excluding the (b2) ether) include monoester solvents, ester solvents having two carbonyl groups, carbonate solvents, and cyclic ester solvents. Specific examples of the component (b3) include methyl acetate, ethyl acetate, n-propyl acetate, isopropyl acetate, butyl acetate, sec-butyl acetate, methoxybutyl acetate, amyl acetate, soybean fatty acid methyl ester, methyl lactate, ethyl lactate, propyl lactate, dibasic acid ester (DBE), ethyl acetoacetate, γ -butyrolactone, dimethyl carbonate, ethylmethyl carbonate, diethyl carbonate, dimethyl oxalate, and diethyl oxalate. (b3) The component (b) may be 1 or more selected from the group consisting of dimethyl carbonate and gamma-butyrolactone.

(b4) alcohol (excluding (b2) ether)

Examples of the (b4) alcohol (excluding the (b2) ether) include monoalcohol solvents. Specific examples of the component (b4) include ethanol, methanol, 1-propanol, isopropanol, 1-butanol, isobutanol, tert-butanol, sec-butanol, benzyl alcohol, diacetone alcohol, 2-propyn-1-ol, and 2-ethylhexanol.

(b5) amide Compound

(b5) The amide compound is a cyclic or acyclic compound having an amide bond. Examples of the component (b5) include N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, 3-methoxy-N, N-dimethylpropionamide, 3-butoxy-N, N-dimethylpropionamide, dimethylformamide, dimethylacetamide, 1, 3-dimethyl-2-imidazolidinone, and the like. (b5) The component (A) may be at least 1 selected from the group consisting of N-methyl-2-pyrrolidone and 3-methoxy-N, N-dimethylpropionamide.

(b6) chloroolefins

(b6) Chloroolefins are olefinic compounds containing carbon and chlorine atoms, and optionally containing hydrogen atoms. Examples of the component (b6) include (b6-1) hydrochloroolefin, (b6-2) perchloroalkene and (b6-3) chlorofluoroalkene. Examples of the component (b6-1) include trans-1, 2-dichloroethylene and trichloroethylene. Examples of the component (b6-2) include tetrachloroethylene (perchloroethylene). Examples of the component (b6-3) include 1, 1-dichloro-2, 3,3, 3-tetrafluoropropene (CFO-1214ya) and 1,1, 2-trichloro-3, 3, 3-trifluoropropene (CFO-1213 xa).

(b7) hydrofluoroolefin

(b7) The hydrofluoroolefin is a halogenated fluoroolefin compound optionally containing 1 or more atoms selected from the group consisting of chlorine atoms and bromine atoms. Examples of the component (b7) include cis-1-chloro-3, 3, 3-trifluoropropene (HCFO-1233zd (Z)), (E) -1-chloro-2, 3, 3-trifluoropropene ((E) -1-chloro-2, 3, 3-trifluoro-1-propene, HCFO-1233yd (E)), (Z) -1-chloro-2, 3, 3-trifluoropropene ((Z) -1-chloro-2, 3, 3-trifluoro-1-propene, HCFO-1233yd (Z)), 2-bromo-3, 3, 3-trifluoro-1-propene, 1-dichloro-3, 3, 3-trifluoropropene (HCFO-1223za), (Z) -1, 2-dichloro-3, 3, 3-trifluoropropene (HCFO-1223xd (Z)), (E) -1, 2-dichloro-3, 3, 3-trifluoropropene (HCFO-1223xd (E)), 1-chloro-1, 3, 3-trifluoropropene, (Z) -1-chloro-2, 3,3,4,4,5, 5-heptafluoro-1-pentene (HCFO-1437dycc (Z)), (E) -1-chloro-2, 3,3,4,4,5, 5-heptafluoro-1-pentene (HCFO-1437 (dycc E)), (Z) -1,1,1,4,4, 4-hexafluoro-2-butene (HFO-1336mzz (Z)), and the like. The hydrofluoroolefin may be (E) -1-chloro-2, 3, 3-trifluoropropene ((E) -1-chloro-2, 3, 3-trifluoro-1-propene, HCFO-1233yd (E)), (Z) -1-chloro-2, 3, 3-trifluoropropene ((Z) -1-chloro-2, 3, 3-trifluoro-1-propene, HCFO-1233yd (Z)), or cis-1-chloro-3, 3, 3-trifluoropropene (HCFO-1233zd (Z)). Commercially available products of hydrofluoroolefins include CELEFIN (registered trademark) 1233Z (HCFO-1233zd (Z)) (Central Glass Co., Ltd., manufactured by Ltd.), AMOLEA (registered trademark) AS-300 (manufactured by AGC Co.) ((E) -1-chloro-2, 3, 3-trifluoropropene (HCFO-1233yd (E)), (Z) -1-chloro-2, 3, 3-trifluoropropene (HCFO-1233yd (Z)), (Z) -and a stabilizer mixture)).

(b8) hydrobromohydrocarbons

(b8) Hydrobromohydrocarbons are compounds consisting only of carbon atoms, bromine atoms, and hydrogen atoms. Examples of the component (b8) include n-propyl bromide (1-bromopropane) and isobutyl bromide.

(b9) hydrofluorocarbons

(b9) Hydrofluorocarbons (HFCs) are compounds consisting of only carbon atoms, fluorine atoms, and hydrogen atoms, and do not have a carbon-carbon double bond. Examples of the component (b9) include 1,1,1,3, 3-pentafluorobutane (HFC-365mfc), 1,1,2,2,3,3, 4-heptafluorocyclopentane (HFC-c447ef), 1,1,1,2,2,3,3,4,4,5,5,6, 6-tridecafluorooctane, and 1,1,1,2,2,3,4,5, 5-decafluoropentane (HFC-43-10 mee). Examples of the commercially available product of the component (c1) include Solcan (registered trademark) 365mfc (manufactured by Ltd., Japan) which is a commercially available product of 1,1,1,3, 3-pentafluorobutane, and examples of 1,1,2,2,3,3, 4-heptafluorocyclopentane include Zeorora (registered trademark) H (manufactured by ZEON CORPORATION).

(b10) hydrofluoroether

(b10) Hydrofluoroethers (HFEs) are compounds containing carbon atoms, fluorine atoms, hydrogen atoms and ether linkages (-O-). Examples of the component (b10) include methyl nonafluorobutyl ether, methyl nonafluoroisobutyl ether, ethyl nonafluorobutyl ether, ethyl nonafluoroisobutyl ether, 1,1,2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether (otherwise known as 1,1,2, 2-tetrafluoro-1- (2,2, 2-trifluoroethoxy) ethane, HFE-347pc-f), 1,1,1,2,2,3,4,5,5, 5-decafluoro-3-methoxy-4- (trifluoromethyl) pentane, 1,1,1,2,3, 3-hexafluoro-4- (1,1,2,3,3, 3-hexafluoropropoxy) pentane, 1,1,1,2,3,4,4, 4-octafluoro-2-methoxy-3- (trifluoromethyl) butane, n-butyl ether, n-butyl ether, n-butyl ether, n-butyl ether, n-, Methyl perfluoropropyl ether, and the like. (b10) The component (B) may be at least 1 selected from the group consisting of methyl nonafluorobutyl ether, methyl nonafluoroisobutyl ether and 1,1,2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether. Commercially available products of the component (b10) include a 3M (trademark) Novec (trademark) 7100 highly functional liquid, a 3M (trademark) Novec (trademark) 7200 highly functional liquid, a 3M (trademark) Novec (trademark) 7300 highly functional liquid, a 3M (trademark) Novec (trademark) 7000 highly functional liquid (manufactured by 3M Japan ltd), and ASAHI CLEAN AE3000 (manufactured by AGC co.

Hydrocarbons (b11)

(b11) The hydrocarbon is a hydrocarbon solvent consisting of carbon and hydrogen only, optionally linear or branched, or cyclic or acyclic, optionally having a carbon-carbon double bond. Examples of the component (b11) include hexane, isohexane, cyclohexane, n-heptane, isoheptane, cycloheptane, n-octane, isooctane, nonane, isononane, decane, methylcyclohexane, ethylcyclohexane, limonene, 2-methyl-2-butene, 2-methyl-1-pentene, 2-methyl-2-pentene, 3-ethyl-2-butene, 2, 3-dimethyl-2-butene, 2,4, 4-trimethyl-1-pentene, 2,4, 4-trimethyl-2-pentene, 2,4,6, 6-pentamethylheptane, isododecane, isoparaffin, cycloalkane, and aromatic hydrocarbon. The hydrocarbon solvent may be a synthetic.

Chlorinated hydrocarbons (b12) (excluding (b6) chloroolefins, (b7) hydrofluoroolefins and (b11) hydrocarbons)

(b12) Chlorinated hydrocarbons (excluding (b6) chloroolefins, (b7) hydrofluoroolefins, and (b11) hydrocarbons) are hydrocarbon-based solvents containing chlorine atoms and carbon atoms, and optionally hydrogen atoms. Examples of the component (b12) include dichloromethane.

(b13) combination of sulfuric acid with at least 1 selected from the group consisting of alkylbenzenesulfonic acids and salts thereof

(b13) The combination of at least 1 selected from the group consisting of alkyl benzene sulfonic acid and a salt thereof with sulfuric acid is a combination of (b13-1) alkyl benzene sulfonic acid and/or a salt thereof, and (b13-2) sulfuric acid.

The alkyl group of the alkylbenzene sulfonic acid in the component (b13-1) is linear or branched. Thus, specific examples of the component (b13-1) include linear alkylbenzene sulfonic acid, a salt of linear alkylbenzene sulfonic acid, and a salt of branched alkylbenzene sulfonic acid. From the viewpoint of further improving the solubility in resins and the like, the number of carbon atoms of the alkyl group may be 6 to 20, 6 to 16, 10 to 14, and 12 to 14.

Examples of the cation source for forming the salt of alkylbenzenesulfonic acid include alkali metals such as lithium, sodium and potassium; alkaline earth metals such as magnesium and calcium; alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine; ammonium ions, and the like. From the viewpoint of further improving the solubility in resins and the like, the salt of alkylbenzenesulfonic acid may be 1 or more selected from the group consisting of an alkali metal salt of alkylbenzenesulfonic acid and an alkaline earth metal salt of alkylbenzenesulfonic acid.

The component (b13-1) contains 1 or more selected from the group consisting of linear alkyl benzene sulfonic acid, salts of linear alkyl benzene sulfonic acid, branched alkyl benzene sulfonic acid and salts of branched alkyl benzene sulfonic acid, and the number of carbon atoms of the alkyl group may be 6 to 20 (6 to 16, 10 to 14, and 12 to 14).

The component (b13-2) is sulfuric acid, and is a component which further improves the solubility in resins and the like by combining with the component (b 13-1). The sulfuric acid may be free sulfuric acid.

(B) The other components may be 1 or a combination of 2 or more, respectively. For example, the component (B) may be a combination of 1 or 2 or more kinds of (B6) chloroolefins and 1 or 2 or more kinds of (B10) hydrofluoroethers. The component (B) may be a combination of 1 or 2 or more kinds of (B2) ethers and 1 or 2 or more kinds of (B8) hydrobromocarbons.

Additive (C)

(C) The additive is not particularly limited as long as it is a component other than the component (B) and is a component generally used in the field of solvent compositions. Examples of the additive (C) include 1 or more selected from the group consisting of water, an ultraviolet absorber, an antioxidant, a polymerization inhibitor, a rust inhibitor, an antifoaming agent, a surfactant, a chelating agent, and the like.

The ultraviolet absorber and the antioxidant are components for improving the stability of the solvent composition during long-term storage or the like. Examples of the ultraviolet absorber include benzotriazole-based ultraviolet absorbers, benzophenone-based ultraviolet absorbers, and hindered amine-based ultraviolet absorbers. Examples of the antioxidant include a phenol-based antioxidant, an amine-based antioxidant, a sulfur-based antioxidant, and a phosphorus-based antioxidant.

Examples of the phenolic antioxidant include: 2, 6-di-tert-butyl-4-methylphenol, triethylene glycol-bis [3- (3-tert-butyl-5-methyl-4-hydroxyphenyl) propionate ], 1, 6-hexanediol-bis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2, 4-bis- (n-octylthio) -6- (4-hydroxy-3, 5-di-tert-butylanilino) -1,3, 5-triazine, pentaerythritol-tetrakis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], 2-thio-diethylene bis [3- (3, 5-di-tert-butyl-hydroxyphenyl) propionate ], (Tri-methyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-propyl-ethyl-, Octa (dodecyl) -3- [3, 5-di-tert-butyl-4-hydroxyphenyl ] propionate ], N-hexamethylenebis (3, 5-di-tert-butyl-4-hydroxy-hydrocinnamamide), 3, 5-di-tert-butyl-4-hydroxy-benzylphosphate-diethyl ester, 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, 2, 4-bis [ (octylthio) methyl ] -o-cresol, methylhydroquinone (2, 5-dihydroxytoluene), 4-methoxyphenol, 2-methoxyphenol, and the like. Methyl hydroquinone (2, 5-dihydroxytoluene) and 4-methoxyphenol can also be used as polymerization inhibitors.

Examples of the amine-based antioxidant include: alkylated diphenylamines, tris- (3, 5-di-tert-butyl-4-hydroxybenzyl) -isocyanurate, N-di-sec-butyl-p-phenylenediamine, p-phenylenediamine derivatives, 1,3, 5-tris (4-tert-butyl-3-hydroxy-2, 6-dimethyl) isocyanurate, and the like. Examples of the sulfur-based antioxidant include: 2, 4-bis [ (octylthio) methyl ] -o-cresol, dilauryl-3, 3-thiodipropionate, dimyristyl-3, 3-dithiodipropionate, distearyl-3, 3-thiodipropionate, pentaerythritol tetrakis (3-laurylthiopropionate), ditridecyl-3, 3-thiodipropionate, 2-mercaptobenzimidazole, bis [ 2-methyl-4- (3-n-alkylthiopropionyloxy) -5-tert-butylphenyl ] sulfide, and the like. Examples of the phosphorus-containing antioxidant include: tris-nonylphenyl phosphite, triphenyl phosphite, tris (2, 4-di-tert-butylphenyl) phosphite, tris (isodecyl) phosphite, and the like.

Examples of the chelating agent include aminocarboxylic acid-based chelating agents, preferably hydroxyethylglycine, hydroxyethyliminodiacetic acid, ethylenediaminetetraacetic acid, and salts thereof.

Examples of the rust inhibitor include cyclohexylamine, dicyclohexylamine and N, N-bis (2-hydroxyethyl) -N-cyclohexylamine. The surfactant may include nonionic surfactants, and preferably includes a higher alcohol ethylene oxide adduct, an alkylphenol ethylene oxide adduct, a fatty acid ethylene oxide adduct, a higher alkylamine ethylene oxide adduct, a fatty acid ester of sorbitol and sorbitan, a sucrose fatty acid ester, a silicone surfactant, a fluorine-based surfactant, and the like.

The additives other than the above-mentioned components are not particularly limited as long as they are generally used in the field of solvent compositions, and can be suitably used.

(C) The additives may be 1 or a combination of 2 or more, respectively.

< composition of solvent composition >

The content of each component in the solvent composition is as follows, relative to 100 parts by weight of the total of the component (a), the component (B) and the component (C).

(A) The content of the component (b) is preferably 3 parts by weight or more and 100 parts by weight or less, more preferably 10 parts by weight or more and 90 parts by weight or less, further preferably 15 parts by weight or more and 80 parts by weight or less, particularly preferably 30 parts by weight or more and 70 parts by weight or less. The content of the component (a) may be 10 parts by weight or more and 100 parts by weight or less, may be 15 parts by weight or more and 80 parts by weight or less, and may be 30 parts by weight or more and 100 parts by weight or less.

(B) The content of the component (b) is preferably 95 parts by weight or less, more preferably 90 parts by weight or less, still more preferably 70 parts by weight or less, and particularly preferably 50 parts by weight or less. The content of the component (B) is preferably 5 parts by weight or more, more preferably 8 parts by weight or more, further preferably 20 parts by weight or more, and particularly preferably 50 parts by weight or more.

(C) The content of the component (b) is preferably 20 parts by weight or less, more preferably 10 parts by weight or less, further preferably 5 parts by weight or less, particularly preferably 1 part by weight or less.

The total content of the component (a), the component (B) and the component (C) may be 70 to 100 parts by weight, 80 to 100 parts by weight, or 90 to 100 parts by weight, based on 100 parts by weight of the total amount of the solvent composition. The total content of the component (a), the component (B), and the component (C) may be 70 parts by weight or more and less than 100 parts by weight, 80 parts by weight or more and less than 100 parts by weight, or 90 parts by weight or more and less than 100 parts by weight, based on 100 parts by weight of the total amount of the solvent composition.

When the amount is within this range, the effect as a solvent composition is more excellent. When the total content of the component (a), the component (B), and the component (C) is 100 parts by weight based on 100 parts by weight of the total amount of the solvent composition, the content of each component is the content of each component when the total amount of the solvent composition is 100 parts by weight based on 100 parts by weight of the total amount of the component (a), the component (B), and the component (C) in the solvent composition. When the component (B) is limited to a specific component (for example, the component (B1)), the solvent composition may or may not contain components (B) other than the specific component (for example, the components (B2) to (B13)). For example, when the specific component is the component (B1) and the component (B) other than the specific component is 1 or more selected from the group consisting of the components (B2) to (B13), the total content of the component (a), the component (B1) and the component (C) is 70 parts by weight and the remaining amount including 1 or more selected from the group consisting of the components (B2) to (B13) may be 30 parts by weight, assuming that the total amount of the solvent composition is 100 parts by weight. (C) The same applies to the case where the components are limited to specific components.

< possible embodiment of solvent composition >

(B) The other component preferably contains (b9) a hydrofluorocarbon and/or (b10) a hydrofluoroether. A part of (b9) hydrofluorocarbon and a part of (b10) hydrofluoroether are not VOC in U.S. EPA and GB38508-2020, and a solvent composition comprising component (b9) and component (b10) can further reduce environmental load. Examples of the component (b9) not belonging to the VOC include 1,1,1,3, 3-pentafluorobutane and 1,1,1,2,2,3,4,5,5, 5-decafluoropentane. Further, as the component (b10) not belonging to VOC, 1,2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether, methyl nonafluorobutyl ether, methyl nonafluoroisobutyl ether, ethyl nonafluorobutyl ether and ethyl nonafluoroisobutyl ether may be mentioned.

(B) In the case where the other components are 2 combinations, (B) the other component may not be (B9) hydrofluorocarbon, a combination with 1 selected from (B3) ester (excluding (B2) ether), (B4) alcohol (excluding (B2) ether), (B6) chloroolefin, (B10) hydrofluoroether and (B11) hydrocarbon, or may not contain the aforementioned combination.

The solvent composition may contain the component (a), and optionally the component (B) and/or the component (C), and the content of the component (a) may be 3 parts by weight or more and 100 parts by weight or less, the content of the component (B) may be 95 parts by weight or less, and the content of the component (C) may be 20 parts by weight or less, based on 100 parts by weight of the total amount of the solvent composition.

Further possible embodiments of the solvent composition are described below. The contents of the components herein can be defined by the above-mentioned components (A) to (C) in addition to the specific descriptions given below. For example, in the following cases, the content of the component (C) may be 20 parts by weight or less, 10 parts by weight or less, 5 parts by weight or less, and 1 part by weight or less, based on 100 parts by weight of the total of the component (a), the component (B), and the component (C).

(B) The component (b) may be at least 1 selected from the group consisting of (b1) nitro compounds, (b5) amide compounds, (b6-1) hydrochloroolefins, (b7) hydrofluoroolefins, (b8) hydrobromocarbons, (b9) hydrofluorocarbons, and (b10) hydrofluoroethers.

(B) The component (B) is more than 1 selected from the group consisting of (b8) hydrobromohydrocarbon and (b6-1) hydrochloroolefin, wherein, (b8) can be 1-bromopropane, and (b6-1) can be trans-1, 2-dichloroethylene. (B) When the component (B8) is a hydrobromohydrocarbon, the content of the component (B8) may be 5 to 90 parts by weight, or 20 to 90 parts by weight, based on 100 parts by weight of the total of the components (a), (B) and (C). (B) When the component (b6-1) is a hydrochloroolefin, the content of the component (b6-1) may be 5 to 90 parts by weight, or 55 to 90 parts by weight.

(B) Component (b) comprises (b8) hydrobromohydrocarbon, and 1 or more selected from the group consisting of (b1) nitro compound, (b2-2) cyclic ether (excluding (b2-3) epoxide), and (b2-3) epoxide, (b8) may be 1-bromopropane. In this case, the solvent composition necessarily contains the component (A) and 1-bromopropane as the component (b8), and optionally contains 1 or more selected from the group consisting of the component (b1), the component (b2-2) and the component (b 2-3). Here, the content of the component (A) may be 10 to 95 parts by weight, the content of the component (B8) may be 5 to 90 parts by weight, and the respective contents of the component (B1), the component (B2-2) and the component (B2-3) may be 0.01 to 5.0 parts by weight, relative to 100 parts by weight of the total of the component (A), the component (B) and the component (C).

(B) In the case where the component (B) contains 1-bromopropane as (B8) hydrobromohydrocarbon and/or trans-1, 2-dichloroethylene as (B6-1) hydrochloroolefin, (B) the component (B) may further contain (B2-1) an acyclic ether, and (B2-1) may be propylene glycol monomethyl ether.

When the solvent composition contains 1-bromopropane as (B8) hydrobromohydrocarbon and propylene glycol monomethyl ether as (B2-1) acyclic ether, the content of component (a) may be 10 parts by weight or more (for example, 10 to 90 parts by weight), or 25 parts by weight or more, the content of component (B8) may be 5 to 80 parts by weight, or 25 to 60 parts by weight, or the content of component (B2-1) may be 5 to 70 parts by weight, or 6 to 70 parts by weight, or 8 to 70 parts by weight, or 14 to 50 parts by weight, based on 100 parts by weight of the total of component (a), component (B) and component (C). When the content of the component (B2-1) is 8 parts by weight or more, the total content of the component (B8) and the component (B2-1) may be 18 parts by weight or more, based on 100 parts by weight of the total of the component (a), the component (B) and the component (C). When the solvent composition further contains 1 or more selected from the group consisting of the component (B1), the component (B2-2), and the component (B2-3), the content of the component (B1), the component (B2-2), and the component (B2-3) may be 0.01 to 5.0 parts by weight relative to 100 parts by weight of the total of the component (a), the component (B), and the component (C).

When the solvent composition contains trans-1, 2-dichloroethylene as (B6-1) hydrochloroolefin and propylene glycol monomethyl ether as (B2-1) acyclic ether, the content of component (a) may be 10 parts by weight or more (for example, 10 to 90 parts by weight), and may be 15 to 35 parts by weight, the content of component (B6-1) may be 5 to 80 parts by weight, and may be 25 to 60 parts by weight, and the content of component (B2-1) may be 5 to 70 parts by weight, and may be 6 to 70 parts by weight, and may be 8 to 70 parts by weight, and may be 14 to 50 parts by weight, based on 100 parts by weight of the total of component (a), component (B2-1) and component (C). The total content of the component (B6-1) and the component (B2-1) may be 13 parts by weight or more relative to 100 parts by weight of the total of the component (A), the component (B) and the component (C).

(B) The component (b5) may be an amide compound, and the component (b5) may be at least 1 selected from the group consisting of N-methyl-2-pyrrolidone and 3-methoxy-N, N-dimethylpropionamide. In this case, the content of the component (a) may be 10 to 95 parts by weight and the content of the component (B5) may be 5 to 90 parts by weight, and may be 30 to 85 parts by weight, based on 100 parts by weight of the total of the component (a), the component (B) and the component (C).

(B) Component (b13) may be a combination of at least 1 selected from the group consisting of alkylbenzenesulfonic acids and salts thereof and sulfuric acid. When the component (B) contains the component (B13), the component (B) may further contain 1 or more selected from the group consisting of (B9) hydrofluorocarbons and (B10) hydrofluoroethers.

In this case, the content of the component (a) may be 10 to 99 parts by weight, and the content of the component (B13) may be 1 to 90 parts by weight, 2 to 50 parts by weight, or 2 to 20 parts by weight, based on 100 parts by weight of the total of the component (a), the component (B), and the component (C). The content of the component (b13) may be 15 to 40 parts by weight. The content of the component (b13-1) and the component (b13-2) is not particularly limited, and the component (b13-1) may be 85 parts by weight or more and 99.99 parts by weight or less, the component (b13-2) may be 0.01 parts by weight or more and 15 parts by weight or less, the component (b13-1) may be 90 parts by weight or more and 99.9 parts by weight or less, and the component (b13-2) may be 0.1 to 10 parts by weight or less, based on 100 parts by weight of the total of the component (b13-1) and the component (b 13-2). When the solvent composition contains 1 or more selected from the group consisting of the component (B9) and the component (B10) in addition to the component (B13), the content of the component (a) may be 20 to 80 parts by weight, the content of the component (B13) may be 10 to 40 parts by weight, and may be 20 to 30 parts by weight, and the total content of the component (B9) and the component (B10) may be 5 to 50 parts by weight, and may be 25 to 40 parts by weight, based on 100 parts by weight of the total of the component (a), the component (B) and the component (C).

The solvent composition containing 14.44 parts by weight of the component (A) and 83.07 parts by weight of methyl acetate was excluded, and a solvent composition containing 14.44 parts by weight of the component (A), 83.07 parts by weight of methyl acetate and 2.48 parts by weight of cyclohexane was also excluded.

[ method for producing solvent composition ]

The method for producing the solvent composition is arbitrary. The solvent composition can be produced by appropriately selecting the raw material components contained in the solvent composition and performing a known method, for example, by performing 1 or more means selected from the group consisting of stirring, mixing, dissolving, and dispersing.

[ use of solvent composition ]

The solvent composition can be used for cleaning agents, cleaning aerosol compositions, solvents for cured products of resins, adhesives for cured products of resins, and coating agents for resins.

< cleaning agent >

The solvent composition is excellent in solubility of oil, flux and/or uncured resin, and therefore, can be used as a cleaning agent for cleaning an object to be cleaned to which 1 or more kinds selected from the group consisting of oily stains, oil, flux and uncured resin are attached. Thus, the invention also relates to: the solvent composition is used as a cleaning agent for cleaning an object to be cleaned to which 1 or more kinds selected from the group consisting of oily stains, oil, flux and uncured resin are attached.

Oil

Examples of the oil include mineral oil, vegetable oil, animal oil, heavy oil, wax, silicone oil, fluorine oil, and the like. These oils are used as cutting oils, oil-pressing oils, drawing oils, heat treatment oils, rust preventive oils, lubricating oils, metal working oils, greases, asphalts, and water-soluble oils in some cases.

The mineral oil is not particularly limited, and a commercially available product may be Pulley SF oil (manufactured by Shikino corporation). Examples of the vegetable oil include olive oil, linseed oil, tung oil, sesame oil, safflower oil, soybean oil, castor oil, cottonseed oil, coconut oil, corn oil, dehydrated castor oil, and the like. The fatty acid constituting the vegetable oil is a saturated or unsaturated fatty acid having from C12 to C18, and specific examples thereof include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, eleostearic acid, and the like. Examples of the animal oil include fish oil, whale oil, lard oil, and beef tallow oil. Examples of the heavy oil include asphaltenes and the like. Examples of the resin include asphalt, pine oil, and the like. Examples of the wax include vegetable-based, animal-based, petroleum-based, and synthetic hydrocarbon-based waxes, and specific examples thereof include paraffin wax.

The silicone oil is a linear polymer of siloxane bonds, and it is mainly obtained by introducing other organic groups such as carboxyl groups, amino groups, polyether groups, and epoxy groups into the side chains or the terminals of dimethyl silicone oil and methylphenyl silicone oil. Specific examples of such silicone oils include dimethylpolysiloxane, methylphenylpolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, polyoxyethylene-methylpolysiloxane, and the like. As commercially available products of this silicone oil, KF-96L-2CS and KF-6012, manufactured by shin-Etsu chemical Co., Ltd., and the like can be given.

The fluorine oil is a compound in which a part or all of hydrogen atoms in the polyalkylether compound are replaced with fluorine, and may contain further atoms such as halogen such as chlorine and bromine, phosphorus, sulfur, and nitrogen. Commercially available fluorine oils include, for example, Fomblin Y-LVAC, Y-HVAC, Y04 and YR manufactured by Solvay Solexis, Inc.; BARRIERTA J100 Fluid, BARRIERTA J25 Fluid, BARRIERTA J400 Fluid, BARRIERTA J25V, BARRIERTA SJ07, BARRIERTA SJ15, and BARRIERTA SJ30, manufactured by NOK KLUEBER corporation; krytox 1506, Krytox 1514 and Krytox 1525 manufactured by DuPont co., ltd; demnum S-20 manufactured by Daikin Industries, Ltd.

The water-soluble oil is roughly classified into an emulsion type, an easily soluble type, and a soluble type. The emulsion type is a milky emulsion formed by diluting a water-insoluble oil such as mineral oil or fatty oil and a surfactant with water as main components. The lyotropic type also contains an oil insoluble in water and a surfactant, but becomes transparent to translucent when diluted with water. The dissolving type is transparent when diluted with water, containing a water-soluble inorganic salt or the like as a main component. In addition, there is also an emulsion type silicone oil in which a silicone oil, a surfactant and water are mixed.

Scaling powder

Examples of the flux include rosin-based fluxes. Examples of the rosin flux include inactive rosin fluxes containing rosins (resin acids containing rosin acids as a main component) and modified rosins and the like as main components; an active rosin flux comprising 1 or more kinds of activators selected from the group consisting of inorganic acid salts (for example, hydrochloride and sulfate) of amine compounds and organic acids as main components. As the inorganic acid salt of the amine compound, triethanolamine hydrochloride, triethylenetetramine hydrochloride, cyclohexylamine hydrochloride, aniline hydrochloride and the like can be mentioned. Examples of the organic acid include carboxylic acids (including dicarboxylic acids) such as succinic acid, adipic acid, glutaric acid, sebacic acid, and maleic acid; hydroxy acids (hydroxycarboxylic acids), and the like.

Further, the flux may be provided in the form of a solder paste in which a solder metal and a rosin flux are integrated. Solder paste is a composition comprising solder alloy powder, resin, activator, antioxidant, thixotropic agent and solvent, consisting of so-called metal powder and flux components.

Resin

The resin in the uncured resin is not particularly limited, and examples thereof include acrylic resins, polycarbonate resins, acrylonitrile/butadiene/styrene resins, silicone resins, polyamide resins, urethane resins, polyacetal resins, epoxy resin styrene resins, and polyvinyl chloride resins.

Examples of the acrylic resin include compounds having an acryloyl group and/or a methacryloyl group, and specific examples thereof include methyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, and the like. Here, the (meth) acrylate means at least one of acrylate and methacrylate. The acrylic resin preferably has no fluorine atom, and particularly preferably has no halogen atom. Examples of the additives to be blended with the acrylic resin include a curing agent, a curing accelerator, a filler, a stabilizer, a plasticizer, a lubricant, a flame retardant aid, an antistatic agent, a colorant, a charge imparting agent, a sliding property improving agent, an impact resistance improving agent, and a reaction diluent. Since acrylic resins have good processability and excellent transparency, cured products of acrylic resins are used for windshields, windows of airplanes, ships, automobiles, and the like, water tanks, lenses, lighting fixtures, displays, display boards, and the like.

Polycarbonate resin is one of thermoplastics. The bond between the monomer units is composed of a carbonate group (-O- (C ═ O) -O-). Examples of the additives to be blended in the polycarbonate resin include a curing agent, a curing accelerator, a filler, a stabilizer, a plasticizer, a lubricant, a flame retardant aid, an antistatic agent, a colorant, a charge imparting agent, a sliding property improving agent, an impact resistance improving agent, and a reaction diluent. Cured products of polycarbonate resins are widely used for members of automobiles and the like, and are used for roofs, headlight lenses, and the like.

The acrylonitrile/butadiene/styrene resin is an acrylonitrile/styrene copolymer in which polybutadiene is dispersed as a rubbery polymer and a copolymer of acrylonitrile and styrene is mainly composed of three components of acrylonitrile, butadiene and styrene. Examples of the additive to be blended with the acrylonitrile/butadiene/styrene resin include a curing agent, a curing accelerator, a filler, a stabilizer, a plasticizer, a lubricant, a flame retardant aid, an antistatic agent, a coloring agent, a charge imparting agent, a sliding property improving agent, an impact resistance improving agent, and a reaction diluent. Cured products of acrylonitrile/butadiene/styrene resins are widely used for interior and exterior parts of automobiles and the like, and are used for wheel covers, instrument panels and the like.

The organic silicon resin is a high condensate of an organic silicon compound and has a repeated structure of dimethyl siloxane and methyl phenyl siloxane. Examples of the additives to be blended with the silicone resin include additives such as a curing agent, a curing accelerator, a filler, a stabilizer, a plasticizer, a lubricant, a flame retardant aid, an antistatic agent, a colorant, a charge imparting agent, a sliding property improving agent, an impact resistance improving agent, and a reaction diluent. Cured products of silicone resins are used for adhesives, coating agents, and the like.

The polyamide resin is a copolymer having an amide bond, and may be synthesized by polycondensation of an ω -amino acid or by polycondensation of a diamine and a dicarboxylic acid. The polyamide resin may be aliphatic or aromatic. Examples of the additives to be blended in the polyamide resin include a curing agent, a curing accelerator, a filler, a stabilizer, a plasticizer, a lubricant, a flame retardant aid, an antistatic agent, a colorant, a charge imparting agent, a sliding property improving agent, an impact resistance improving agent, and a reaction diluent. Cured products of polyamide resins are used for automobile parts such as engine hoods, industrial valves, filaments, and the like.

Examples of the urethane resin include reaction products of diisocyanates such as Toluene Diisocyanate (TDI) and diphenylmethane diisocyanate (MDI) and polyols such as polypropylene glycol. When the urethane resin is in the form of foam, it may be in the form of soft foam, semi-rigid foam, or rigid foam. Examples of the additives to be blended with the urethane resin include a curing agent, a curing accelerator, an emulsifier, a foaming agent, a stabilizer, a plasticizer, a flame retardant, an antistatic agent, a colorant, a sliding property improver, and an impact resistance improver. Cured products of urethane resins are used for heat insulating materials, coating agents for electronic substrates, and the like.

The polyacetal resin has an oxymethylene group (-CH) in its unit structure₂The copolymer of O-) structure can also contain oxyethylene unit (-CH)₂CH₂O-) units. Examples of the additives to be blended with the polyacetal resin include a curing agent, a curing accelerator, a filler, a stabilizer, a plasticizer, a lubricant, a flame retardant aid, an antistatic agent, a colorant, a charge imparting agent, a sliding property improving agent, an impact resistance improving agent, and a reaction diluent. A cured product of polyacetal resin is used for gears, bearings, pump parts, and the like.

Examples of the epoxy resin include bisphenol a type epoxy resins, bisphenol F type epoxy resins, bisphenol AD type epoxy resins, polyglycidyl ethers of polyhydric alcohols, polyglycidyl esters of polybasic acids, 3, 4-epoxycyclohexyl-3 ', 4' -epoxycyclohexane carboxylates, vinylcyclohexene diepoxides, cresol novolak type epoxy resins, and hydantoin ring-containing epoxy resins. Examples of the additives to be blended in the epoxy resin include a curing agent, a curing accelerator, a filler, a stabilizer, a plasticizer, a lubricant, a flame retardant aid, an antistatic agent, a colorant, a charging property imparting agent, a sliding property improving agent, an impact resistance improving agent, and a reaction diluent.

The curing agent for the epoxy resin may be any one as long as it is generally used as a curing agent for epoxy resins, and examples thereof include phenol novolacs, bisphenolic novolacs, and bisphenol a novolacs, acid anhydrides such as phthalic anhydride, pyromellitic anhydride, and benzophenonetetracarboxylic anhydride, amines such as diaminodiphenylmethane, diaminodiphenylsulfone, m-phenylenediamine, and hexamethylenetetramine, and amide resins such as polyamidoamine. Examples of the curing accelerator include tertiary amines and organic phosphorus compounds. Cured products of epoxy resins are used for adhesives, potting agents for electronic substrates, and the like.

Styrene resin is a polymer using styrene as a monomer, and a cured product thereof is also called polystyrene. In the case where the styrene resin is in the form of a foam, the cured foam of the styrene resin is also referred to as expanded styrene. Examples of additives to be blended in a styrene resin include a foaming agent, a curing accelerator, a filler, a stabilizer, a plasticizer, a lubricant, a flame retardant aid, an antistatic agent, a colorant, a charge imparting agent, a sliding property improving agent, an impact resistance improving agent, and a reaction diluent. The cured product of a styrene resin is used for a lamp lens, a cap, and the like for an automobile.

Polyvinyl chloride resins are homopolymers of vinyl chloride or copolymers of vinyl chloride with further vinyl monomers. Examples of the additives to be blended in the polyvinyl chloride resin include a curing agent, a curing accelerator, a filler, a stabilizer, a plasticizer, a lubricant, a flame retardant aid, an antistatic agent, a colorant, a charging property imparting agent, a sliding property improving agent, an impact resistance improving agent, and a reaction diluent. Cured products of polyvinyl chloride resins are used for pipes, building materials such as flooring materials, and the like.

Oily stain

As the oily stain, oil contamination, contamination of flux, contamination of uncured resin may be mentioned. The oil, flux and uncured resin which become the raw materials of the oily stain are as described above. Examples of the oily stain include a nonpolar oily stain, an oily stain derived from a polar component, and an oily stain derived from a plurality of components having different polarities depending on the polarity of the oil. In addition, contaminants of the flux include: rosin as a flux component, an inorganic acid salt of an amine compound, an organic acid, and a component in which the above-mentioned components are partially modified or carbonized by reflow at a high temperature. Further, the contaminants of the solder paste include contaminants of the flux components and metal powder described above. The resin contaminants include nonpolar resin contaminants, oily stains derived from polar components, and oily stains derived from a plurality of components having different polarities, depending on the polarities of the resin components and the components used in combination.

< aerosol composition for cleaning >

The cleaning aerosol composition contains a solvent composition and a jet gas. Thus, the invention also relates to: use of an aerosol composition comprising a solvent composition and a propellant gas as an aerosol composition for cleaning. The aerosol composition immediately after being sprayed maintains its state as a solution without volatilizing the solvent composition. Furthermore, the aerosol composition after the spraying is spread over a wide range without being turned into fine droplets, and the solvent composition in the form of a mist can be concentrated and delivered to a narrow range. That is, the solvent composition may be applied to the site to be cleaned from a remote distance. Further, the contact of the solvent composition with the substrate of the object to be cleaned can be suppressed, and the metal part of the object to be cleaned can be effectively cleaned.

The gas to be injected is selected from the group consisting of compressed air and N₂Argon, CO₂And LPG. The form of the injected gas is not particularly limited, and examples thereof include liquefied gas and compressed gas. From the viewpoint of suppressing rapid volatilization of the solvent composition, it is preferably selected from the group consisting of compressed air and N₂Argon and CO ₂1 or more of the group.

The method for producing the cleaning aerosol composition is not particularly limited, and examples thereof include the following methods: a method of filling an aerosol composition in which a solvent composition and a liquid propellant gas are mixed into a pressure-resistant tank to perform aerosolization; alternatively, the solvent composition may be added to a container (e.g., a tank) and then the container may be filled with compressed air by an air compressor or the like to aerosolize the solvent composition. Further, as for the aerosol composition for cleaning, reference is made to the description of Japanese patent laid-open publication No. 2018-105723.

< cleaning method >

The cleaning method using the solvent composition (i.e., the method of using the cleaning agent) includes the steps of: the solvent composition is brought into contact with the object to be cleaned. In the object to be cleaned, oily stains, oil, flux and/or uncured resin adhere to the substrate. In the cleaning method, oily stains, oil, flux and/or uncured resin adhering to the substrate are removed from the substrate by bringing the solvent composition into contact with the object to be cleaned. When the oily stain contains solid contaminants such as dust and dirt, the solid contaminants can be removed simultaneously with the removal of the oily stain.

The substrate is not particularly limited, and examples thereof include metal, fiber, glass, ceramics, and plastics. Examples of the metal include silver, zinc, nickel, iron, aluminum, copper, manganese, magnesium, stainless steel, aluminum alloy (an alloy of aluminum and 1 or more metals selected from copper, manganese, silicon, magnesium, zinc, and nickel), and the like. The aluminum alloy may be cast aluminum, and examples thereof include ADC12 and ADC 14. Examples of the plastic include PET resin (polyethylene terephthalate resin), epoxy resin, acrylic resin, polycarbonate resin, silicone resin, and ABS resin (acrylonitrile/butadiene/styrene resin). The base material may be plastic as long as the oily stain, oil, flux, or resin is removed from the base material. Specific examples of the substrate include apparatuses for obtaining a cured product of the resin.

The method for bringing the solvent composition into contact with the object to be cleaned is not particularly limited, and examples thereof include: hand wiping cleaning, immersion cleaning (liquid phase cleaning), spray cleaning (including spraying with a cleaning aerosol composition), spray cleaning, ultrasonic cleaning, vapor cleaning (vapor phase cleaning), and combinations thereof, but preferred are hand wiping cleaning, immersion cleaning, vapor cleaning, spray cleaning (including spray cleaning with spraying with a cleaning aerosol composition), and combinations of immersion cleaning and vapor cleaning. Hand rub cleaning is typically performed as follows: the rubbing may be performed by hand while the paper, cloth, or the like applied with the composition is in contact with the region to which the oily stain and/or oil is adhered, or by hand while the paper, cloth, or the like applied with the composition is in contact with the region to which the oily stain and/or oil is adhered, with the aid of a plate or a bar. Spray cleaning by spraying of the cleaning aerosol composition is performed by blowing the cleaning aerosol composition in the form of aerosol toward a region to which oily stains and/or oil are attached.

When the cleaning method of the object to be cleaned using the solvent composition is a combination of immersion cleaning and vapor cleaning, specific examples thereof include a cleaning method including the steps of: step (1A): a step of immersing the object to be cleaned in a solvent composition; step (1B): and a step of generating a vapor containing the component (A) from the solvent composition and bringing the generated vapor containing the component (A) into contact with the object to be cleaned.

The step (1A) is a step of immersing the object to be cleaned in the solvent composition. In the step (1A), the object to be cleaned is brought into contact with the solvent composition. In order to improve the cleaning effect, it is preferable to use means such as heating, stirring, shaking, ultrasonic vibration, or bubbling in combination with the immersion. The time for the immersion cleaning is not particularly limited as long as the time is sufficient for removing the oily stain and/or oil adhering to the object to be cleaned. In the step (1A), oily stains and/or oil are removed from the object to be cleaned. The step (1A) may be constituted by a plurality of cleaning tanks.

The step (1B) is a step of generating a vapor containing the component (a) from the solvent composition and bringing the generated vapor containing the component (a) into contact with the object to be cleaned. If the solvent composition is an azeotropic composition, the "vapor containing (A)" is a vapor of the solvent composition. If the solvent composition is not an azeotropic composition, the solvent composition is heated to generate a vapor containing at least the component (a). In the step (1B), the object to be cleaned is brought into contact with the vapor generated from the solvent composition, thereby performing vapor cleaning. The time for the steam purge is not particularly limited, and may be 1 second or more and 60 minutes or less. Thereby, the solvent composition and the contaminant component adhering to the object to be cleaned are exchanged with the component in the vapor phase. In the step (1B), since the object to be cleaned is brought into contact with the component (a), the cleaning (steam cleaning) is performed by the step of performing steam cleaning.

Examples of an apparatus used in such a cleaning method of an object to be cleaned by a combination of immersion cleaning and steam cleaning include: the cleaning device comprises a cleaning tank for containing cleaning agent and soaking the cleaned object, and a steam tank for generating steam of the cleaning agent. Here, the cleaning agent used in the cleaning tank may be the same as or different from the cleaning agent used in the vapor tank. In addition, vapor of the cleaning agent can be generated from the cleaning tank. In this case, the cleaning tank is also a vapor tank. In this case, the solvent composition stored in the cleaning tank is heated at least until the component (a) is in a boiling state.

The cleaning time corresponding to the contact time between the solvent composition and the object to be cleaned is not particularly limited as long as it is a time capable of removing oily stains and/or oil from the substrate. For example, the cleaning time may be 10 seconds or more and 2 hours or less.

< possible further embodiment of the cleaning method >

A further example of the cleaning method and the cleaning system (cleaning apparatus) used in the cleaning method other than the above will be described. Examples of a cleaning system (cleaning apparatus) used in the cleaning method include: disclosed in japanese patent laid-open nos. 2008-163400 and 2015-217319, are cleaning apparatuses having a cleaning tank for storing a cleaning agent and immersing an object to be cleaned, and a steam tank for generating steam of the cleaning agent. In addition, an example of a preferable cleaning system used in the cleaning method and a cleaning method using the cleaning system will be described.

(1) Cleaning system 1

The cleaning system 1 is a single-tank type cleaning machine. The cleaning system 1 is a cleaning system, and includes: a boiling tank for containing a cleaning agent, immersing an object to be cleaned, and generating steam of the cleaning agent; a recovery unit for liquefying and recovering the cleaning agent vapor generated from the boiling tank; and a water separator for separating water from the recovered liquid recovered by the recovery unit to extract the cleaning agent.

Fig. 1 schematically shows a cleaning system 1. The cleaning system 1 preferably includes: a boiling tank (11 in fig. 1) containing a cleaning agent (1 in fig. 1) containing the component (a) and the component (B); a recovery unit (for example, 21 and 22 in fig. 1) for liquefying and recovering the cleaning agent vapor (2 in fig. 1) generated from the boiling tank; and a water separator (23 in fig. 1) for separating water from the recovered liquid recovered by the recovery unit, extracting the cleaning agent, and supplying the cleaning agent after extraction to the boiling tank. In fig. 1, solid arrows indicate the flow of the cleaning agent.

The boiling tank is a tank for boiling and cleaning an object to be cleaned. The boiling tank is also sometimes called a steam tank or a steam tank. The boiling tank is provided with a heater (24 in fig. 1) for maintaining the temperature of the vapor generating the cleaning agent at or above (preferably at or above the boiling point of the cleaning agent). The boiling tank may have an ultrasonic transducer for applying ultrasonic vibration to the cleaning liquid.

In the cleaning system 1, a pump and a filter circuit may be laid in the boiling tank. The cleaning system 1 includes a pump and a filter circuit, and thus tends to prevent contaminants from accumulating in the boiling tank when the contaminants removed from the object to be cleaned are solid substances.

A recovery part for liquefying and recovering the cleaning agent vapor generated in the boiling tank is provided at the upper part of the boiling tank. The recovery unit is not particularly limited as long as it includes means for liquefying the vapor of the cleaning agent and means for supplying the liquefied component to the water separator.

The means for liquefying the vapor of the cleaning agent is not particularly limited, and a condenser tube (21 in fig. 1) is preferred. The condenser tube is a means for reducing the temperature of the vapor of the cleaning agent and liquefying the vapor. The cleaning system is provided with the condensation pipe, so that the release of the cleaning agent from the cleaning system to the outside can be further reduced. The number of windings of the condenser tube is preferably 3 or more, more preferably 4 or more, further preferably 5 or more, and particularly preferably 6 or more.

Means for supplying the liquefied cleaning agent to the water separator is not particularly limited, and a launder (22 in fig. 1) is preferable. The flow groove is provided for supplying the cleaning agent liquefied by the condensation pipe or the like to the water separator. Here, the liquid of the cleaning agent liquefied by the means of liquefying the vapor of the cleaning agent and supplied to the water separator is referred to as a recovered liquid.

Then, the cleaning agent is extracted by a water separator described later and reused as a regeneration liquid.

The water separator is provided to separate water from the recovered liquid, extract the cleaning agent, and return the cleaning agent to the boiling tank. The means for separating water by the water separator is not particularly limited as long as the cleaning agent can be extracted by separating water from the recovered liquid, and specific gravity separation, membrane separation, and the like can be mentioned. The water separator preferably extracts the cleaning agent by specific gravity separation.

An example of a structure of a water separator in which a recovery section includes a condensation pipe and a flow tank and a means for separating water by the water separator is a specific gravity separation is disclosed in japanese patent laid-open publication No. 2015-217319.

The cleaning system 1 may have a supply means for spray cleaning with a cleaning agent, although not shown. After the object to be cleaned is boiled and/or steam cleaned, the object to be cleaned is sprayed with the composition to be cleaned, and the composition is made to collide with the surface of the object to be cleaned, so that the cleaning effect tends to be further improved.

Cleaning method using cleaning system 1

The cleaning method using the cleaning system 1 includes the steps of: (1A) a step of immersing the object to be cleaned in a boiling tank to perform boiling cleaning; and (1B) placing the object to be cleaned in a steam region generated from the boiling tank to perform steam cleaning.

The step (1A) is a step of immersing the object to be cleaned in a boiling tank to perform boiling cleaning. In fig. 1, the object to be cleaned (S in fig. 1) is moved from the position of S1 to the position of S2 at the start of cleaning, and immersed in the cleaning agent. In the step (1A), the object to be cleaned is brought into contact with the liquid of the composition. In the boiling tank, the cleaning agent is brought into a boiling state, that is, during boiling cleaning, the cleaning agent is heated by a heating means such as a heater.

In boiling cleaning, in order to improve the cleaning effect, it is preferable to combine means using stirring, shaking, ultrasonic vibration, bubbling, or the like with immersion, and more preferably to combine means using ultrasonic vibration.

The step (1B) is a step of placing the object to be cleaned in a steam region generated from the boiling tank to perform steam cleaning. In fig. 1, the object to be washed is moved from the position S2 to the position S4, which is the upper part of the boiling tank, and placed in the steam region. The vapor region is formed by vapor of the cleaning agent. In the step (1B), the object to be cleaned is brought into contact with the steam generated from the boiling tank, thereby performing steam cleaning. Thereby, the contaminant component adhering to the object to be cleaned is exchanged with the cleaning agent in the vapor region. In the step (1B), since the object to be cleaned is in contact with the cleaning agent, the cleaning (steam cleaning) is performed by the step of performing steam cleaning. Thereafter, the object to be cleaned is moved to the position of S5 where the cleaning is completed, and the cleaning is completed.

(2) Cleaning system 2

The cleaning system 2 is a double-tank type cleaning machine. A cleaning system is provided with: an ultrasonic cleaning tank which contains a cleaning agent containing the component (A) and the component (B) and is used for cleaning by immersing an object to be cleaned; a vapor tank for generating vapor of the cleaning agent; a recovery unit for liquefying and recovering the cleaning agent vapor generated in the vapor tank; and a water separator for separating water from the recovered liquid recovered by the recovery unit to extract the cleaning agent.

Fig. 2 schematically shows the cleaning system 2. The cleaning system 2 preferably includes: an ultrasonic cleaning tank (12 in fig. 2) for storing a cleaning agent group (1 in fig. 2); a vapor tank (13 in fig. 2) for storing a cleaning agent (3 in fig. 2); a recovery unit (for example, 21 and 22 in fig. 2) for liquefying and recovering the cleaning agent vapor (2 in fig. 2) generated from the vapor tank; and a water separator (23 in fig. 2) for separating water from the recovered liquid recovered by the recovery unit, extracting the cleaning agent, and supplying the cleaning agent after extraction to the ultrasonic cleaning tank. The cleaning system 2 corresponds to the cleaning system 1 further including an ultrasonic cleaning tank, except that the cleaning agent is returned from the water separator to the ultrasonic cleaning tank. In fig. 2, solid arrows indicate the flow of the cleaning agent.

Preference is also included for the vapor tank in purge system 2, as described in purge system 1.

The ultrasonic cleaning tank desirably has an ultrasonic transducer (25 in fig. 2) for applying ultrasonic vibration. Although not shown, the ultrasonic cleaning tank may be provided with a heater for adjusting the temperature of the composition. In the cleaning system 2, when the contaminants removed from the object to be cleaned are solid substances, a pump and a filter circuit may be provided in the ultrasonic cleaning tank for the purpose of preventing accumulation of the contaminants.

In the cleaning system 2, the cleaning agent extracted by the water separator is supplied to the ultrasonic cleaning tank. In addition, the liquid level of the ultrasonic cleaning tank is higher than that of the steam tank, and the cleaning liquid overflows from the ultrasonic cleaning tank to the steam tank.

Cleaning method using cleaning system 2

The cleaning method using the cleaning system 2 includes the steps of: (2A) a step of immersing the object to be cleaned in an ultrasonic cleaning tank to perform ultrasonic cleaning; and (2B) placing the object to be cleaned in a steam area generated by the steam tank to perform steam cleaning.

The step (2A) is a step of immersing the object to be cleaned (S in fig. 2) in an ultrasonic cleaning tank to perform ultrasonic cleaning. The frequency of the ultrasonic wave is not particularly limited and may be set as appropriate.

The step (2B) is a step of placing the object to be cleaned in a steam region generated from the steam tank to perform steam cleaning. In fig. 2, the object to be cleaned is moved from the position of S2 to the position of S4, which is the upper part of the steam tank, and placed in the steam region. Then, the object to be cleaned is brought into contact with steam generated from the boiling tank, thereby performing steam cleaning. The conditions in the step (2B) also include preferable ones, as described in the step (1B). Then, the object to be cleaned is moved to the position of S5 where the cleaning is completed, and the cleaning is completed.

(3) Cleaning system 3

The cleaning system 3 is a three-tank type cleaning machine. A cleaning system is provided with: an ultrasonic cleaning tank which contains a cleaning agent containing the component (A) and the component (B) and is used for cleaning by immersing an object to be cleaned; a washing tank for storing a cleaning agent and immersing an object to be cleaned for washing; a vapor tank for generating vapor of the cleaning agent; a recovery unit for liquefying and recovering the cleaning agent vapor generated from the vapor tank; a water separator for separating water from the recovered liquid recovered by the recovery unit, extracting the cleaning agent, and returning the cleaning agent to the flushing tank.

Fig. 3 schematically shows a cleaning system 3. The cleaning system 3 preferably includes: an ultrasonic cleaning tank (12 in fig. 3) for storing a cleaning agent (1 in fig. 3); a rinse tank (14 in fig. 3) for storing a rinse liquid (4 in fig. 3); a vapor tank (13 in fig. 3) for storing a cleaning agent (3 in fig. 3); a recovery unit (for example, 21 and 22 in fig. 3) for liquefying and recovering the cleaning agent vapor (2 in fig. 3) generated from the vapor tank; and a water separator (23 in fig. 3) for separating water from the recovered liquid recovered by the recovery unit, extracting the cleaning agent, and supplying the cleaning agent after extraction to the rinse tank. The cleaning system 3 corresponds to the cleaning system 2 further provided with a rinsing tank. In fig. 3, solid arrows indicate the flow of the cleaning agent.

As for the ultrasonic cleaning tank and the vapor tank in the cleaning system 3, as described in the cleaning system 1 and the cleaning system 2. The washing tank is a tank for washing and cleaning the object to be cleaned. The washing liquid is a cleaning agent. Although not shown, the rinse tank may be provided with an ultrasonic transducer, and may be provided with a heater for adjusting the temperature of the rinse liquid. In order to prevent the reduction of the rinse liquid due to the generation of vapor, the temperature of the rinse liquid in the rinse tank is preferably lower than the boiling point of the rinse liquid. In the case where the contaminants removed from the object to be cleaned are solid substances, a pump and a filter circuit may be installed in the flushing tank for the purpose of preventing accumulation of the contaminants.

As one mode of the cleaning system 3, the cleaning agent extracted by the water separator flows into the rinse tank. In addition, the liquid level of the rinsing tank is higher than that of the ultrasonic cleaning tank, so that the rinsing liquid overflows from the rinsing liquid tank to the ultrasonic cleaning tank. Furthermore, the liquid level of the ultrasonic cleaning tank is higher than that of the steam tank, so that the cleaning liquid overflows from the ultrasonic cleaning tank to the steam tank.

Cleaning method using cleaning system 3

The cleaning method using the cleaning system 3 includes the steps of: (3A) a step of immersing the object to be cleaned in an ultrasonic cleaning tank to perform ultrasonic cleaning; (3B) a step of immersing the object to be cleaned in a washing tank to wash the object; and (3C) placing the object to be cleaned in a steam area generated by the steam tank to perform steam cleaning.

The step (3A) is a step of immersing the object to be cleaned in an ultrasonic cleaning tank to perform ultrasonic cleaning. The conditions in the step (3A) also include preferable ones, as described in the step (2A).

The step (3B) is a step of immersing the object to be cleaned in the washing tank to perform washing. In fig. 3, the object to be washed is moved from the position of S2 to the position of S3, and immersed in the rinse liquid. The time for immersing in the rinsing bath, that is, the rinsing time corresponding to the contact time between the rinsing liquid and the object to be cleaned is not particularly limited, but is preferably 1 second to 60 minutes, more preferably 10 seconds to 30 minutes. In the step (3B), the rinsing liquid is exchanged with the cleaning agent composition and the contaminant components that have slightly adhered to the object to be cleaned.

The step (3C) is a step of placing the object to be cleaned in a steam region generated from the steam tank and performing steam cleaning. In fig. 3, the object to be cleaned is moved from the position of S3 to the position of S4 which is the upper part of the steam tank. Then, the object to be cleaned is brought into contact with the steam generated from the steam tank, thereby performing steam cleaning. The conditions for the steam purge are as described in step (1B).

(4) Cleaning system 4

The cleaning system 4 is a single-cycle type cleaning machine. A cleaning system is provided with: an ultrasonic cleaning tank which contains a cleaning agent composition containing the component (A) and the component (B) and is used for cleaning by soaking a cleaned object; a vapor tank for generating vapor of the cleaning agent; a recovery unit for liquefying and recovering the cleaning agent vapor generated in the vapor tank; and a water separator for separating water from the recovered liquid recovered by the recovery unit to extract the cleaning agent.

Fig. 4 schematically shows the cleaning system 4. The cleaning system 4 preferably includes: an ultrasonic cleaning tank (12 in fig. 4) for storing a cleaning agent (1 in fig. 4); a vapor tank (13 in fig. 4) for storing a cleaning agent (3 in fig. 4); a recovery unit (for example, fig. 4, 21 and 22) for recovering and liquefying the cleaning agent vapor (fig. 4, 2) generated from the vapor tank; and a water separator (23 in fig. 4) for separating water from the recovered liquid recovered by the recovery unit, extracting the cleaning agent, and supplying the extracted cleaning agent to the ultrasonic cleaning tank. The cleaning system 4 corresponds to the cleaning system 1 further including an ultrasonic cleaning tank, except that the cleaning agent is returned from the water separator to the ultrasonic cleaning tank and cleaned in the ultrasonic cleaning tank. In fig. 4, solid arrows indicate the flow of the cleaning agent.

The ultrasonic cleaning tank and the steam tank in the cleaning system 4 are also preferably included as described in the cleaning systems 1 to 3.

In the cleaning system 4, the cleaning agent extracted by the water separator is supplied to the ultrasonic cleaning tank. In addition, the liquid level of the ultrasonic cleaning tank is higher than that of the steam tank, so that the cleaning liquid overflows from the ultrasonic cleaning tank to the steam tank.

Cleaning method using cleaning system 4

The cleaning method using the cleaning system 4 includes the steps of: (4A) a step of immersing the object to be cleaned in an ultrasonic cleaning tank to perform ultrasonic cleaning; and (4B) placing the object to be cleaned in a steam area generated by the steam tank to perform steam cleaning.

The step (4A) is a step of immersing the object to be cleaned (S in fig. 4) in an ultrasonic cleaning tank to perform ultrasonic cleaning. The conditions in the step (4A) also include preferable ones, as described in the step (2A).

The step (4B) is a step of placing the object to be cleaned in a steam region generated from the steam tank to perform steam cleaning. In fig. 4, the object to be cleaned is moved from the position of S2 to the position of S4, which is the upper part of the ultrasonic cleaning tank, and placed in the steam region. Then, the object to be cleaned is brought into contact with the steam generated from the steam tank, thereby performing steam cleaning. The conditions in the step (4B) also include preferable ones, as described in the step (2B). Then, the object to be cleaned is moved to the position of S5 where the cleaning is completed, and the cleaning is completed.

Distillation regeneration devices can be laid in each cleaning system.

< possible embodiment of cleaning agent >

In the cleaning agent, the uncured resin is preferably a urethane resin and/or an epoxy resin. In addition, in the cleaning agent, the oil is preferably mineral oil, vegetable oil, wax and/or silicone oil. In addition, in the cleaning agent, the oily stain is preferably a contaminant of the above-mentioned preferable uncured resin, oil and/or flux.

When the cleansing agent is a hand-rubbing cleansing agent, the oil is preferably mineral oil, and the oily stain is preferably a resin contaminant.

In the cleaning agent, it is preferable that the cleaning agent does not contain a substance to be removed by the cleaning agent (i.e., 1 or more selected from the group consisting of oily stains, oil, flux, and uncured resin).

The cleaning agent preferably does not contain a compound having a silicon atom and/or silicone such as polydimethylsiloxane.

In the cleaning agent, the total content of the (B2) ether, (B3) ester (excluding (B2) ether) and (B4) alcohol (excluding (B2) in the (B) component may be 25 parts by weight or more, or the aforementioned components may not be contained.

In the cleaning agent (particularly, a cleaning agent for cleaning an object to be cleaned to which a urethane resin and/or an epoxy resin as an uncured resin and contaminants thereof are adhered), (B) the component (B) may be 1 or 2 or more selected from the group consisting of components (B1), (B2), (B3) and (B8), and may contain 1 or 2 or more selected from the group consisting of nitromethane, propylene glycol monomethyl ether, dimethyl carbonate and 1-bromopropane.

When the solvent composition is used for a cleaning agent, the preferable content of each component may be the following in addition to the content of the solvent composition described above.

In the case of a cleaning agent for cleaning an object to be cleaned to which a urethane resin and/or an epoxy resin as an uncured resin and contaminants thereof adhere, the content of the component (a) is preferably 3 parts by weight or more, more preferably 10 parts by weight or more and 90 parts by weight or less, further preferably 15 parts by weight or more and 80 parts by weight or less, and particularly preferably 30 parts by weight or more and 70 parts by weight or less, based on 100 parts by weight of the total amount of the solvent composition.

In the case of a cleaning agent for cleaning an object to be cleaned to which oil and/or flux and contaminants adhere, the content of the component (a) is preferably 10 parts by weight or more, and particularly preferably 50 parts by weight or more and 100 parts by weight or less, based on 100 parts by weight of the total amount of the solvent composition.

In the cleaning agent, the total content of the component (a) and the component (B) is preferably 70 parts by weight or more and 100 parts by weight or less, more preferably 80 parts by weight or more and 100 parts by weight or less, and particularly preferably 90 parts by weight or more and 100 parts by weight or less, based on 100 parts by weight of the total amount of the solvent composition.

< agent for dissolving cured product of resin >

Since the cured product of the resin has excellent solubility, the solvent composition can be used as a solvent for the cured product of the resin. Thus, the invention also relates to: the solvent composition is used as a solvent for a cured resin.

(cured product of resin) >

The cured product of the resin comprises: a cured product of a resin alone, and a cured product of a resin composition containing an additive blended in the resin. The cured product of the resin includes a cured product cured by accelerating a curing reaction of the resin, and a cured product cured by volatilization of an additive blended in the resin such as a reactive diluent or an increase in viscosity. The resin in the cured product of the resin is not particularly limited, and the above-mentioned resin in the uncured resin can be mentioned.

Use method of dissolving agent

The method for dissolving a cured resin product using a dissolving agent comprises the following steps: the dissolving agent is brought into contact with the cured resin. In the step of bringing the dissolving agent into contact with the cured product of the resin, the cured product of the resin is dissolved in the dissolving agent. The contact time of the dissolving agent with the cured product of the resin is not particularly limited as long as the desired effect can be achieved. The contact time is preferably 5 seconds to 24 hours, more preferably 10 seconds to 8 hours, and particularly preferably 10 minutes to 2 hours. Within the above time range, the cured product of the resin can be sufficiently dissolved. The entire cured product of the resin can be dissolved to form a uniform phase with the dissolving agent, all or a part of the cured product of the resin can be present in two layers as a swollen product swollen with the dissolving agent to form a swollen product of the dissolving agent and the resin, and a part of the cured product of the resin can also be dissolved to make the cured product of the resin fine. The cured product of the resin is preferably completely dissolved to form a uniform phase with the dissolving agent. In addition, when the amount of the cured product of the dissolved resin exceeds the saturated dissolution amount of the dissolving agent, a part of the cured product of the resin may remain without dissolving.

The temperature of the dissolving agent when the dissolving agent is brought into contact with the cured product of the resin is not particularly limited, and may be 0 to 100 ℃, 0 to 50 ℃, or 5 to 40 ℃. The temperature of the dissolving agent may be 20 to 80 ℃.

< coating agent for resin >

Since the cured product of the resin has excellent solubility, the solvent composition can be used as a coating agent for the resin. Thus, the invention also relates to: a solvent composition in which a cured product of a resin is dissolved is used as a coating agent for the resin.

The resin coating agent is a composition obtained by dissolving a cured product of a resin in a dissolving agent. Thus, the resin coating agent can be produced by a method including a step of dissolving a cured product of the resin in the solvent composition. The coating agent is applied (e.g., coated) to a substrate, and the solvent portion of the coating agent is removed (e.g., volatilized), thereby forming a coating film of a cured product of the resin. Further, a resin molded product having a desired shape can be obtained by pouring a coating agent into a mold having an arbitrary shape and removing (for example, volatilizing) the solvent portion of the solvent. In the coating agent, a part of a cured product of the resin may be undissolved. However, the content of the cured product of the resin in the coating agent is preferably not more than the saturated dissolution amount of the cured product of the resin. When the content is such a range, a cured product of the undissolved resin does not exist, and a homogeneous coated and/or molded resin article can be obtained.

< adhesive of cured product of resin >

Since the cured product of the resin has excellent solubility, the solvent composition can be used as an adhesive for a cured product of a resin. Thus, the invention also relates to: the solvent composition is used as an adhesive for a cured product of a resin.

The adhesive is a solvent adhesive that dissolves and bonds cured resin. That is, the adhesive exhibits an adhesive function by bringing a base material, which is a cured product of a resin, into contact with a dissolving agent to dissolve a part of an adhesive surface of the base material and volatilize a solvent. By forming the adhesive using the solvent composition, the adhesive surface can be firmly bonded without using an intervening material such as a reaction-curable adhesive (for example, cyanoacrylate in a cyanoacrylate-based adhesive) or the like. The method for producing an adhesive body using an adhesive comprises a step of bringing the adhesive body into contact with a dissolving agent.

Specifically, the method for producing an adhesive body includes the steps of: (A1) applying the dissolving agent to the surface to be bonded of one base material to dissolve a part of the surface to be bonded of the one base material; and (B1) laminating the other base material and bonding the base materials to each other via the bonded surface of the partially dissolved one base material.

The method for producing an adhesive body includes the steps of: (A1) applying the dissolving agent to the surface to be bonded of one base material to dissolve a part of the surface to be bonded of the one base material; (B2) applying the dissolving agent to the surface to be bonded of the other base material to dissolve a part of the surface to be bonded of the other base material; and (C2) bonding one substrate to another substrate, and bonding the substrates to each other via the bonded surface of the one substrate in which the part of the solvent has been dissolved and the bonded surface of the other substrate in which the part of the solvent has been dissolved. The method of producing an adhesive body may further include a step of bonding a further substrate by repeating the steps (a1) and (B1) and the steps (a1), (B2) and (C2).

The method of applying the dissolving agent is not particularly limited, and coating, spreading, spray gun, and the like can be mentioned. The time for bonding the substrates to each other is not particularly limited as long as the desired effect can be achieved. The contact time is preferably 1 minute to 10 hours, particularly preferably 30 minutes to 2 hours. Within the above time range, the adhesion between the substrates is sufficiently exhibited. The step of bonding the substrates together may include a step of heating at a temperature of 50 to 80 ℃ in some cases. This can further promote curing, and the adhesive strength can be further improved.

< possibility of dissolving agent for cured product of resin, adhesive for cured product of resin, and coating agent for resin >

The cured product of the resin dissolved in the solvent of the cured product of the resin, the adhesive of the cured product of the resin, and the coating agent of the resin is preferably 1 or more selected from acrylic resins, polycarbonate resins, acrylonitrile/butadiene/styrene resins, silicone resins, urethane resins, polyamide resins, and polyacetal resins.

(B) The component (b) may be 1 or 2 or more selected from the group consisting of the components (b1), (b3), (b6), (b7), (b8), (b10), (b11), (b12) and (b13), and may be 1 or 2.

When the solvent composition is used for a solvent for a cured product of a resin, an adhesive for a cured product of a resin, and a coating agent for a resin, the preferable content of each component may be as follows, in addition to the content of the solvent composition.

(B) When the component (a) is a combination of 2 or more selected from the group consisting of the components (b1) to (b13), the content of the component (a) may be 50 parts by weight or more. When the component (B) is a combination of the component (B6) and the component (B10), the content of the component (a) may be 50 parts by weight or more.

Examples

The present invention will be described in further detail below with reference to examples and comparative examples, but the present invention is not limited to these examples. Unless otherwise specified, parts are parts by weight.

(articles of use)

The ingredients used in the examples are as follows. The compositions of the examples and comparative examples were prepared as follows: the following solvents were used as they were or mixed according to the compositions (parts by weight) shown in the table.

1.(A) p-chlorotrifluoromethylene

(a-1) p-chlorotrifluoromethylene (manufactured by Tokyo Kasei Co., Ltd.)

(B) other ingredients

(b1-1) nitromethane (manufactured by Tokyo Kasei Co., Ltd.)

(b1-2) Nitroethane (manufactured by FUJIFILM Wako Pure Chemical Corporation)

(b2-1) propylene glycol monomethyl ether (1-methoxy-2-propanol, manufactured by Tokyo Kasei Kogyo Co., Ltd.)

(b2-2) dipropylene glycol monomethyl ether (manufactured by Tokyo Kasei Co., Ltd.)

(b2-3) dipropylene glycol dimethyl ether (manufactured by Tokyo Kasei Kogyo Co., Ltd.)

(b2-4)1, 2-epoxybutane (manufactured by Tokyo Kasei Kogyo Co., Ltd.)

(b2-5)1, 3-Dioxolane (manufactured by Tokyo Kasei Kogyo Co., Ltd.)

(b3-1) dimethyl carbonate (manufactured by Tokyo Kasei Co., Ltd.)

(b3-2) Gamma-butyrolactone (manufactured by Tokyo Kasei Co., Ltd.)

(b4-1) Solmix AP-1 (manufactured by Japan Alcohol tracing CO., LTD, ethanol 85.50 mass%, 2-propanol 13.40 mass%, methanol 1.10 mass%, water content 0.20 mass% or less)

(b4-2) 1-propanol (manufactured by Tokyo Kasei Co., Ltd.)

(b5-1) N-methyl-2-pyrrolidone (NMP) (Tokyo chemical industry Co., Ltd.)

(b5-2) 3-methoxy-N, N-dimethylpropionamide (manufactured by Tokyo Kasei Kogyo Co., Ltd.)

(b6-1) Trans-1, 2-dichloroethylene (manufactured by Tokyo Kasei Kogyo Co., Ltd.)

(b6-2) trichloroethylene (manufactured by FUJIFILM Wako Pure Chemical Corporation)

(b7-1) cis-1-chloro-3, 3, 3-trifluoropropene (HCFO-1233zd (Z), Central Glass Co., Ltd.)

(b7-2) AMOLEA (registered trademark) AS-300(a mixture of more than 99% by mass of ((E) -1-chloro-2, 3, 3-trifluoropropene and (Z) -1-chloro-2, 3, 3-trifluoropropene and less than 1% by mass of a stabilizer) (manufactured by AGC Co., Ltd.)

(b8-1) 1-bromopropane (manufactured by Tokyo Kasei Co., Ltd.)

(b9-1)1,1,1,3, 3-pentafluorobutane (Solvay Co., Ltd., manufactured by Ltd., SOLKANE (registered trademark) 365mfc)

(b10-1)1,1,2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether (manufactured by AGC Co., Ltd., ASAHI CLEAN AE-3000)

(b10-2) a mixture of 20 to 80 parts by mass of methyl nonafluorobutyl ether and 20 to 80 parts by mass of methyl nonafluoroisobutyl ether (3M Novec (trade Mark) 7100 highly functional liquid manufactured by Japan Ltd.; 3M (trade Mark))

(b11-1) Daphne ALPHA Cleaner MX (2,2, 4,6, 6-pentamethylheptane, manufactured by Shikino corporation, 90 wt% or more and 100 wt% or less, isoparaffin (C10-C13) 0.1 wt% or more and less than 1 wt%, synthetic hydrocarbon less than 10 wt%)

(b12-1) Dichloromethane (methylene chloride, manufactured by Tokyo Kasei Kogyo Co., Ltd.)

(b13-1) a mixture of linear alkyl benzene sulfonic acid, a salt of linear alkyl benzene sulfonic acid, and sulfuric acid (sulfuric acid 0.1 to 1.5% by weight) (LIPON LH-200, Lion Specialty Chemicals Co., Ltd., manufactured by Ltd.)

(b13-2) mixture of branched alkylbenzene sulfonic acid and sulfuric acid (sulfuric acid 1-10 wt%) (LIPON LH-900, Lion Specialty Chemicals Co., Ltd.)

(c-1) Blaunon CHA-2P (N, N-bis (2-hydroxyethyl) -N-cyclohexylamine, manufactured by Rauwolfia oil & fat Co., Ltd.)

3. Oil and the like

(1) Mineral oil: DAPHNE mapplus ST25 (manufactured by shinko corporation) (hydrogenated low-viscosity paraffin 90 wt% to 100 wt%, sulfurized fat and oil 1 wt% to less than 10 wt%, hydrogenated low-viscosity paraffin 1 wt% to less than 10 wt%, 2, 6-di-tert-butyl-4-cresol 0.1 wt% to less than 1 wt%, solvent-dewaxed heavy paraffin-based petroleum fraction 0.1 wt% to less than 1 wt%, lubricant additive less than 2 wt%)

(2) Vegetable oil: edible Olive Oil (Ajinomoto Oil extra virgin, J-Oil Mills Co., manufactured by Ltd.)

(3) Silicone oil: dimethicone 350CS (shin & Yue chemical Co., Ltd., KF96-350CS-1, viscosity 350cSt)

(4) Marking pen: oil marker High McKee black (Zebra Co., Ltd.)

(5) Uncured epoxy resin: a main agent and a curing agent of a high-performance epoxy strong adhesive Araldite (registered trademark) Standard (Huntsman Japan co., ltd.) were mixed in a mass ratio of 1: 1 is obtained by mixing

(6) Uncured urethane resin: LOCTITE foaming polyurethane Green foam (made by Henkel Japan Ltd.)

(7) Lead-free solder paste for SMT (surface mounting): PF305-117TO (TF) (Nihon Handa Co., manufactured by Ltd.)

(8) Paraffin wax: ParaffinWax-135(Nippon Seiro Co., Ltd., melting point 59 ℃ C.)

4. Cured product of resin

(1) Cured product of acrylic resin: acrylic plate (Acrysunday Co., Ltd.; Acrysunday EX plate; color number/EX 001 thickness 2mm)

(2) Cured product of polycarbonate resin (PC resin): polycarbonate resin plate (30 mm. times.10 mm. times.2 mm, manufactured by Kabushiki Kaisha)

(3) Cured product of acrylonitrile/butadiene/styrene resin (ABS resin): ABS type resin plate (Takachi Electronics Co., Ltd., 300 mm. times.200 mm. times.1.0 mm, manufactured by Ltd.)

(4) Cured product of epoxy resin: cured product of epoxy adhesive (Huntsman Japan co., ltd., Araldite (registered trademark) Standard, main agent and curing agent mixed at a weight ratio of 1: 1)

(5) Cured product of cyanoacrylate resin: cured product of cyanoacrylate adhesive (Threebond Co., Ltd., manufactured by Ltd., Threebond1731)

(6) Cured product of silicone resin: silicone rubber (made by Kagaku corporation, silicone rubber sheet (thickness 2mm, silicone hardness 50))

(7) Cured product of urethane resin: cured product of urethane adhesive (LOCTITE Superclear urethane adhesive manufactured by Henkel Japan Ltd.)

(8) Cured product of polyamide resin: nylon yarn (Nylon string No. 2, made by Gaogu net corporation, thickness of about 0.25mm)

(9) Cured product of polyacetal resin: polyacetal resin beads (Duracon (registered trademark) sphere of 2mm diameter, no-grade (purchased from Monotaro, order code 08470464))

[ test example 1] uncured resin dissolution test

In a PET cup (Plastic cup PET transparent cup, manufactured by Shiko Inula industries Co., Ltd.) having a volume of 210ml, 0.1g of an uncured epoxy resin or an uncured urethane resin was placed, and 10g of each solvent composition was further placed, and the solubility in mixing with disposable chopsticks was evaluated.

(solubility of epoxy resin)

Very good: mixed to be transparent or turbid

O: some of the insoluble matter which is not mixed is in the form of fine lumps and floats in the liquid

●: some of the water is mixed, but the insoluble matter becomes large lumps and floats in the liquid

X: not mixed, and attached to the wall of the cup

(solubility of urethane resin)

Very good: dissolve and become transparent

O: mixing but clouding

●: some of the insoluble matter is not mixed but becomes spherical and floats in the liquid

X: not mixed, and attached to the wall of the cup

Test example 2: degreasing property confirmation test

For mineral oil, silicone oil, and vegetable oil, an oil dissolution test and an oil cleaning test were performed to evaluate degreasing performance.

(oil dissolution test)

0.15g of oil was put into a test tube (capacity: 4ml, 10X 75mm, manufactured by PYREX (registered trademark)). Next, 3g of the solvent composition was put into the test tube at normal temperature (about 20 ℃ C.). The state of the oil was observed when the oil was stirred 10 times with a pasteur pipette, and the oil solubility was evaluated.

(oil cleaning test)

SUS304 plates (35 mm. times.15 mm. times.0.1 mm, manufactured by Korea corporation) were immersed in each oil, and the samples were taken out after 5 minutes to prepare cleaning test samples. An ultrasonic cleaner US-13KS (oscillation frequency: 38kHz, high-frequency power: 360W) manufactured by SND Co., Ltd was filled with tap water, and the water temperature was adjusted to about 40 ℃.50 mL of the solvent composition (cleaning agent) was placed in a 100mL beaker, sealed with an aluminum foil, immersed in an ultrasonic cleaner, adjusted so that the liquid temperature of the solvent composition became about 40 ℃, and then the cleaning test sample was immersed in the solvent composition under the generation of ultrasonic waves. After 3 minutes, the test sample was taken out of the beaker, and immersed in 50mL of a rinsing solvent composition having the same composition as a solvent composition having a liquid temperature of about 40 ℃ prepared in another 100mL beaker under the generation of ultrasonic waves. After 1 minute, the sample was taken out of the liquid, dried naturally, and then observed with the naked eye or an HD M I digital solid microscope STZ-161-TLED 1080M (Shimadzu corporation) to observe the surface of the sample.

(criteria for determination)

Very good: the coating was uniformly transparent in the oil dissolution test, and no oil stain was observed in the oil washing test.

O: in the oil dissolution test, cloudiness or separation was confirmed, but in the oil washing test, no oil stain was confirmed.

X: in the oil dissolution test, cloudiness or separation was confirmed, and in the oil washing test, a clear oil stain was confirmed.

Test example 3: hand rubbing test

0.1g of mineral oil was dropped on the surface of SUS304 plate (100 mm. times.100 mm. times.0.1 mm, manufactured by Kaisha Seisakusho K.K.) or a straight line was drawn with a marker to prepare a cleaning test sample.

A set of 2 overlapped tissues (of Oji Nepia co., ltd.) 1 was formed into a size of 65mm in length and 72mm in width, folded into four, stained with the solvent composition of each example, and squeezed 1 time with a thumb and an index finger. The tissue paper stained with each solvent composition was brought into contact with the surface of SUS304 board and wiped off by hand.

(mineral oil)

Very good: the surface of the SUS plate was visually cleaned by wiping 2 times.

O: the surface of the SUS plate was visually cleaned by wiping 3 times.

●: after 3 rubs, a fine oil stain was observed, but the result was almost clean.

X: even after 3 wipes, there was a noticeable oil stain.

(Mark pen)

Very good: the mark of the marker was not visually recognized by wiping 3 times, and the mark was cleaned.

O: the trace of the fine marker was confirmed by wiping 3 times, but was almost clean.

X: even if the rubbing was performed 3 times, a clear mark of the marker was confirmed.

Test example 4: flux cleaning test (1)

(1) Preparation of cleaning test samples

Lead-free solder paste for SMT (surface mount technology) was applied to a galvanized iron plate (corresponding to JIS G3302, 30mm in length, 30mm in width, and 0.3mm in thickness) via a metal mask, and the plate was placed on a hot plate at about 180 ℃ for 3 minutes and then at about 250 ℃ for 5 minutes. Further cooled to room temperature (about 20 ℃ C.), and left for 2 days, a washing test sample (a washed object to which contaminants of the solder paste containing rosin are attached) was obtained.

(2) Cleaning test

An ultrasonic cleaner US-13KS (oscillation frequency: 38kHz, high-frequency power: 360W) manufactured by SND Co., Ltd was filled with tap water, and the water temperature was adjusted to about 40 ℃.50 mL of the solvent composition was placed in a 100mL beaker, sealed with an aluminum foil, and immersed in an ultrasonic cleaner, and after adjusting the liquid temperature of the solvent composition to about 40 ℃, the cleaning test sample was immersed in the solvent composition under the generation of ultrasonic waves. After 3 minutes, the test sample was taken out of the beaker, and immersed in 50mL of a rinsing solvent composition having the same composition as a solvent composition having a liquid temperature of about 40 ℃ prepared in another 100mL beaker in advance under the generation of ultrasonic waves. After 1 minute, the sample was removed from the liquid, allowed to dry naturally, and then the surface of the test sample was observed with the naked eye.

Very good: no white residue was observed under a microscope.

O: a white residue was not observed with the naked eye, but a very small amount of a white residue was observed under a microscope.

And (delta): a slight amount of white residue was visually observed.

X: white residue was easily confirmed with the naked eye.

Test example 5: aerosol cleaning test

0.1g of mineral oil was dropped onto a 100mm × 100mm portion of an SUS430 plate (400 mm × 300mm × 1mm, manufactured by Kogyo Co., Ltd.) and uniformly applied with No. 3 ball pen (horse hair).

300ml of each solvent composition was put into a refillable aluminum air spray can A1631D (capacity 650ml, manufactured by FIRSTINFO TOOLS CO., LTD.), and then nitrogen gas (0.6MPa) was filled therein.

(test method)

The aerosol composition was sprayed for 10 seconds from a distance of 50cm from the test sample.

(test results)

O: the removal of oil from the oil-coated portion can be confirmed visually.

X: the oil remained in the oil-coated portion was visually confirmed.

Test example 6: acrylic resin dissolution test

Acrylic test pieces were obtained by cutting acrylic plates into 5 mm. times.10 mm pieces. After 4g of the dissolving agent of each example shown in the table was put into a test tube, the cut acrylic test piece was immersed. The acrylic resin was left at room temperature (18 to 22 ℃ C.) and the dissolving power of the cured product of the acrylic resin was evaluated as follows.

Very good: the cured resin was completely dissolved in 2 hours.

O: the cured product of the resin was completely dissolved in more than 2 hours and 8 hours.

●: the cured product of the resin was completely dissolved in more than 8 hours and 24 hours.

X: the cured resin was not dissolved within 24 hours.

When the acrylic test piece was dissolved (when the dissolution force was "●, o" and "very good"), the dissolving agent dissolved in the acrylic test piece was in a uniform liquid phase. Further, if the solvent is volatilized, the acrylic resin is cured again, and the shape of the acrylic resin can be freely changed. The color of the re-cured acrylic resin was transparent while maintaining the color of the dissolved acrylic resin sheet. Thus, a dissolving agent in which an acrylic test piece (cured product of acrylic resin) is dissolved can also be used as the coating agent.

Test example 7: adhesion test

(1) Adhesion test of acrylic resin

2 sheets of acrylic sheet (cut into length 10X width 30X thickness 2mm) were used. One drop of each composition was dropped on the center of an acrylic plate using a Pasteur pipette. Next, one of the acrylic plates was applied with the dissolution agent, and the other was bonded to the acrylic plate to form a cross. The spilled dissolving agent is wiped off with a tissue and removed. The mixture was left standing for 1 hour to obtain an adhesive body. The adhesiveness of the adhesive was evaluated by the following method.

(test of adhesion)

Very good: can be adhered, and cannot be peeled off even if the adhesive is forcibly peeled off by manpower.

O: can be adhered, and can not be peeled off after falling 3 times from a place with a height of 1m, but can be peeled off when the peeling is required to be forcibly done by manpower.

●: but was peeled off within 3 times when dropped from a place having a height of 1 m.

X: completely fail to adhere

(2) Adhesion test of polycarbonate resin

In the "(1) adhesion test of acrylic resin", a test was performed in the same manner except that "2 acrylic resin plates" were replaced with "2 polycarbonate resin plates".

(3) Adhesion test of acrylonitrile/butadiene/styrene resin

In the "(1) adhesion test of acrylic resin", a test was carried out in the same manner except that "2 acrylic sheets" were replaced with "2 ABS type resin sheets".

Test example 8: soldering flux cleaning test (2)

(1) Preparation of cleaning test samples

Lead-free solder paste for SMT (surface mount technology) was applied to a galvanized iron plate (corresponding to JIS G3302, 30mm in length, 30mm in width, and 0.3mm in thickness) via a metal mask, and the plate was placed on a hot plate at about 180 ℃ for 3 minutes and then at about 250 ℃ for 60 minutes. Further cooled to room temperature (about 20 ℃ C.), and left to stand for 7 days, a washing test sample (a washed object to which contaminants of the solder paste containing rosin are attached) was obtained. The cleaning test sample and test example 4: the sample in the flux cleaning test (1) was less likely to be cleaned because the flux component was more firmly attached than the sample.

(2) Cleaning test

An ultrasonic cleaner US-13KS (oscillation frequency: 38kHz, high-frequency power: 360W) manufactured by SND Co., Ltd was filled with tap water, and the water temperature was adjusted to about 40 ℃.50 mL of the solvent composition was placed in a 100mL beaker, sealed with an aluminum foil, and immersed in an ultrasonic cleaner, and after adjusting the liquid temperature of the solvent composition to about 40 ℃, the cleaning test sample was immersed in the solvent composition under the generation of ultrasonic waves. After 3 minutes, the test sample was taken out of the beaker, and immersed in 50mL of a rinsing solvent composition having the same composition as a solvent composition having a liquid temperature of about 40 ℃ prepared in another 100mL beaker in advance under the generation of ultrasonic waves. After 1 minute, the sample was removed from the liquid, allowed to dry naturally, and then the surface of the test sample was observed with the naked eye.

Very good: even when the residue was observed with a microscope, no white residue was observed.

O: although no white residue was observed with the naked eye, a very small amount of white residue was observed when the residue was observed with a microscope. However, the level is such that it does not adversely affect practical use.

● -O: although no white residue was observed with the naked eye, a slight amount of white residue was observed when the residue was observed with a microscope. However, the level is such that it does not adversely affect practical use.

●: a slight amount of white residue was visually observed, but the residue was at a level not adversely affecting practical use.

X: white residue was easily visually observed, and the level was such that it adversely affected actual use.

Test example 9: paraffin wax cleaning test

(1) Preparation of cleaning test samples

The paraffin wax was heated at 100 ℃ to form a liquid state. An SUS304 plate (10 mm. times.10 mm. times.0.1 mm, manufactured by Korea corporation) was immersed in the solution, and after 10 seconds, the plate was taken out and left to stand at room temperature to obtain a cleaning test sample to which paraffin was fixed.

(2) Cleaning test

An ultrasonic cleaner US-13KS (oscillation frequency: 38kHz, high-frequency power: 360W) manufactured by SND Co., Ltd was filled with tap water, and the water temperature was adjusted to about 40 ℃.50 mL of the solvent composition was placed in a 100mL beaker, sealed with an aluminum foil, and immersed in an ultrasonic cleaner, and after adjusting the liquid temperature of the solvent composition to about 40 ℃, the cleaning test sample was immersed in the solvent composition for 3 minutes under the generation of ultrasonic waves. Then, 500ml of the solvent composition of each example was placed in a 3L beaker having an SUS cooling coil (9 coils, an outer diameter of the tube of 6mm, and cooling water passing through a condenser tube at room temperature (about 20 ℃ C.)) mounted on the upper portion thereof, and the test sample was boiled to about the boiling point in a silicon oil bath and exposed to the generated vapor for 60 seconds. After that, the test specimen was taken out from the beaker, allowed to dry naturally, and then the surface of the test specimen was observed with the naked eye. The apparatus used in the test method corresponds to the cleaning system 4.

O: the surface is clean.

●: although a very small amount of residue was observed, the residue was at a level not adversely affecting practical use.

X: significant residue was observed at a level that adversely affected practical use.

Test example 10: VOC test

The VOC test specified in GB38508-2020 (limit of the content of Volatile Organic Compounds (VOC) in the cleaning agent) is specified in China.

2g of each composition was weighed into a weighing bottle (AGC Techno Glass Co., Ltd.) of 50mm × 30mm, and left in a thermostatic bath set at 105 ℃ for 4 hours. Thereafter, the mixture was cooled in a desiccator for 30 minutes, and the weight was measured. The amount of decrease was divided by the original weight (2g), and the VOC content percentage (Wv) of the test sample was calculated. The VOC content (X) of the test sample was calculated according to the following formula.

X＝(Wv-Ww-Wi)×Y×0.01

X: VOC content (g/L) in test samples

Wv: VOC percentage in test sample (%)

And Ww: percentage of moisture in test sample (%)

And Wi: the percent (%) of VOC-excluded substances in the test sample (A) p-chlorotrifluoromethylene, (b9-1)1,1,1,3, 3-pentafluorobutane, (b10-1)1,1,2, 2-tetrafluoroethyl-2, 2, 2-trifluoroethyl ether, (b10-2) 20 parts by mass or more and 80 parts by mass or less of methylnonafluorobutyl ether, and a mixture of 20 parts by mass or more and 80 parts by mass or less of methylnonafluoroisobutyl ether are also applicable, and HFC-43-10mee, HFO-1336mzz (Z), HFE-7200 and the like are also applicable)

Y: density of test sample (g/L)

(criteria for determination)

O: x is 900(g/L) or less.

X: x exceeds 900.

Test example 11: adhesive dissolution test

0.1g of each adhesive was applied to SUS304 plates (35 mm. times.15 mm. times.0.1 mm, manufactured by Korea corporation) and allowed to stand at room temperature (about 20 ℃ C.) for 1 week to obtain samples to which cured products of the respective resins were attached. 80mL of each solvent composition was placed in a 100mL beaker, sealed with an aluminum foil, and heated on a hot plate so that the liquid temperature became about 60 ℃. Evaluation was performed according to the following criteria.

(test example 11-1) epoxy adhesive

(test example 11-2) cyanoacrylate adhesive

(test example 11-3) urethane adhesive

Determination criterion

Very good: a part or all of the adhesive is dissolved, completely dissolved or disintegrated, thereby removing the adhesive from the SUS304 plate. The time required was less than 3 hours.

Good: a part or all of the adhesive is dissolved, completely dissolved or disintegrated, thereby removing the adhesive from the SUS304 plate. The required time is more than 3 hours and less than 24 hours.

X: even after the lapse of 24 hours, the adhesive was not removed from the SUS304 plate.

Test example 12: dissolution test of cured resin

In a test tube (capacity: 4ml, 10X 75mm, manufactured by PYREX (registered trademark)) covered with an aluminum foil, 2g of each composition was impregnated with each resin in an amount described below, and the composition was allowed to stand at normal temperature (about 20 ℃ C.) for evaluation in accordance with the following criteria.

(test example 12-1) Silicone resin

The silicone rubber was cut to 100 mg.

Determination criterion

Very good: dissolve in less than 1 hour

Good: dissolving in more than 1 hour to less than 24 hours

X: does not dissolve in 24 hours

(test example 12-2) urethane resin

The urethane adhesive was allowed to dry naturally at room temperature (about 20 ℃) for 7 days to obtain a cured product, and the obtained cured product was cut to obtain 100 mg.

Determination criterion

Very good: dissolve in less than 6 hours

Good: dissolving in more than 6 hours to less than 24 hours

X: does not dissolve in 24 hours

(test example 12-3) Polyamide resin

The nylon yarn was cut to 10 mm.

Determination criterion

Very good: dissolve in less than 6 hours

Good: dissolving in more than 6 hours to less than 24 hours

X: does not dissolve in 24 hours

(test examples 1 to 4) polyacetal resin

1 polyacetal resin ball

Determination criterion

Very good: dissolve in less than 24 hours

Good: dissolving in more than 24 hours to less than 48 hours

X: does not dissolve in 48 hours

The results are summarized in the following table.

[ Table 1]

[ Table 2]

[ Table 3]

[ Table 4]

[ Table 5]

[ Table 6]

[ Table 7]

[ Table 8]

[ Table 9]

[ Table 10]

[ Table 11]

[ Table 12]

[ Table 13]

[ Table 14]

[ Table 15]

[ Table 16]

[ Table 17]

Since p-chlorotrifluoromethane is contained, the solvent composition is a solvent composition having low environmental load.

In addition, according to test examples 1 to 9 and 11 to 12, the solvent composition has excellent solubility of resin and the like, and has excellent effects as a cleaning agent, an aerosol composition, a dissolving agent for a cured product of a resin, a coating agent for a resin, and an adhesive for a cured product of a resin. In addition, according to test example 10, the solvent composition was a solvent composition with reduced VOC and low environmental load.

According to test example 1, when the content of the component (B) is 30 parts by weight or more based on 100 parts by weight of the total solvent composition, the solubility of the uncured resin is more excellent.

According to test example 1, when the component (B) is the components (B1) to (B8), the solubility of the uncured resin is more excellent than when the component (B) is not contained and the components (B9) to (B11) are contained.

According to the comparison of examples 14, 55 and 56 with examples 78, 82 and 94 in test example 1, in the case where the (B) component is a combination of the (B2) component and the (B8) component, the solubility of the uncured resin is more excellent.

In particular, according to the comparison between examples 12 to 14 and examples 15 to 20 in test example 1, when the content of propylene glycol monomethyl ether is 30 parts by weight or more based on 100 parts by weight of the total solvent composition, the solubility of the uncured resin is more excellent than that in the case where the content of propylene glycol monomethyl ether is 5 to 20 parts by weight.

Furthermore, according to the comparison between examples 12 to 14 and examples 72 to 91 and 96 to 120 in test example 1, when the propylene glycol monomethyl ether content is 5 to 20 parts by weight based on 100 parts by weight of the total solvent composition, the solubility of the uncured resin is more excellent by combining with 1-bromopropane or trans-1, 2-dichloroethylene.

Further, in the case where the component (B) is 1-bromopropane and further contains 1 or more selected from the group consisting of nitro compounds, cyclic ethers, and epoxides, the solubility of the uncured resin is more excellent, as compared with the examples 56 to 57 and the examples 127 to 151 in test example 1.

According to test example 2, when the content of the component (B) is 50 parts by weight or less, the cleaning property and solubility to various oils are more excellent.

According to the comparison of examples 6, 8, 18 and 19 with examples 28 and 30 in test example 2, in the case where the component (B) is the component (B3), the cleaning property or solubility to various oils is particularly excellent.

According to the comparison of example 6 with examples 18 and 28 in test example 4, in the case where the (B) component is the (B2) and (B3) components, the cleaning property or solubility to the flux is more excellent.

According to test example 6, when the content of the component (B) is 30 parts by weight or more, the solubility of the cured product of the resin is more excellent, and the adhesiveness of the cured product of the resin is more excellent.

According to examples 302 to 338 in test example 6, when the component (B) was the component (B1), (B3), (B6), (B7-2) or (B8), the solubility of the cured product of the resin was more excellent and the adhesiveness of the cured product of the resin was more excellent than when the component (B) was the component (B7-1).

According to test example 6, when the content of the component (B) is 30 parts by weight or more, the solubility of the cured product of the resin is more excellent.

According to test example 7, when the content of the component (B) is 30 parts by weight or more, the adhesiveness of the cured product of the resin is more excellent.

According to examples 339 to 382 in test example 7, when the component (B) was the component (B1), (B3), (B6), or (B7-2), the cured product of the resin was more excellent in adhesiveness than the cured product of the resin was the component (B7-1), (B8), or (B10-2).

When the component (B) is a combination of the component (B6) and the component (B10) in comparison with examples 379 and 381 in test example 7, when the content of the component (A) is 50 parts by weight or more, the cured product of the resin has more excellent adhesiveness. In addition, according to example 337 in test example 6, the solubility of the cured product of the resin was more excellent in the same manner.

According to the comparison between examples 177 to 182, 223, 229 and 236 and examples 183 to 222, 224 to 228 and 230 to 235 in test example 8, the cleaning property of the flux is more excellent in the case where the component (B) contains 1-bromopropane in a specific amount or more (examples 183 to 198), in the case where the component (B) contains 1-bromopropane and propylene glycol monomethyl ether in specific amounts (examples 199 to 222), and in the case where the component (B) contains trans-1, 2-dichloroethylene and propylene glycol monomethyl ether in specific amounts (examples 230 to 235).

Description of the reference numerals

1 cleaning agent, 2 vapor of cleaning agent, 3 cleaning agent, 4 rinse solution, 11 boiling tank, 12 ultrasonic cleaning tank, 13 vapor tank, 14 rinse tank, 21 condenser tube, 22 flow tank, 23 water separator, 24 heater, 25 ultrasonic vibrator, S object to be cleaned, S1-S5 object to be cleaned

Claims (22)

1. A solvent composition comprising (a) p-chlorotrifluoromethylene.

2. The solvent composition according to claim 1, further comprising 1 or more (B) other ingredients selected from the group consisting of: (b1) nitro compounds, (b2) ethers, (b3) esters, (b4) alcohols, (b5) amide compounds, (b6) chloroolefins, (b7) hydrofluoroolefins, (b8) hydrobromohydrocarbons, (b9) hydrofluorocarbons, (b10) hydrofluoroethers, (b11) hydrocarbons, (b12) chlorinated hydrocarbons, and (b13) combinations of 1 or more selected from the group consisting of alkylbenzene sulfonic acids and salts thereof with sulfuric acid, wherein (b3) esters exclude (b2) ethers, (b4) alcohols exclude (b2) ethers, (b12) chlorinated hydrocarbons exclude (b6) chloroolefins, (b7) hydrofluoroolefins, and (b11) hydrocarbons.

3. The solvent composition according to claim 1, further comprising 1 or more selected from the group consisting of (b1) nitro compounds, (b5) amide compounds, (b6-1) hydrochloroolefins, (b7) hydrofluoroolefins, (b8) hydrobromohydrocarbons, (b9) hydrofluorocarbons, and (b10) hydrofluoroethers.

4. The solvent composition of claim 1, further comprising 1 or more selected from the group consisting of (b8) hydrobromohydrocarbon and (b6-1) hydrochloroolefin, (b8) is 1-bromopropane, (b6) is trans-1, 2-dichloroethylene.

5. The solvent composition of claim 1, further comprising (b8) a hydrobromohydrocarbon, and 1 or more selected from the group consisting of (b1) nitro compounds, (b2-2) cyclic ethers, and (b2-3) epoxides, with (b8) being 1-bromopropane, wherein (b2-2) cyclic ethers exclude (b2-3) epoxides.

6. The solvent composition of claim 4, further comprising (b2-1) an acyclic ether, (b2-1) is propylene glycol monomethyl ether.

7. The solvent composition of claim 5, further comprising (b2-1) an acyclic ether, (b2-1) is propylene glycol monomethyl ether.

8. The solvent composition according to claim 1, further comprising (b5) an amide compound, (b5) is 1 or more selected from the group consisting of N-methyl-2-pyrrolidone and 3-methoxy-N, N-dimethylpropionamide.

9. The solvent composition according to claim 1, further comprising (b13) a combination of 1 or more selected from the group consisting of alkylbenzenesulfonic acids and salts thereof with sulfuric acid.

10. The solvent composition according to claim 9, further comprising 1 or more selected from the group consisting of (b9) hydrofluorocarbons and (b10) hydrofluoroethers.

11. The solvent composition according to any one of claims 1 to 10, wherein the content of the component (a) is 3 parts by weight or more and 100 parts by weight or less, based on 100 parts by weight of the total amount of the solvent composition.

12. A cleaning agent for cleaning an object to be cleaned, which comprises the solvent composition according to any one of claims 1 to 11, wherein 1 or more selected from the group consisting of oily stains, oils, fluxes, and uncured resins are adhered to the object to be cleaned.

13. The cleaning agent according to claim 12, which is used as a cleaning agent for hand wiping.

14. A cleaning aerosol composition comprising: the solvent composition of any one of claims 1 to 11, and a sparging gas.

15. A cleaning method comprising spraying the cleaning aerosol composition according to claim 14 to clean.

16. A cleaning agent used in a method for cleaning an object to be cleaned, which is the cleaning agent according to claim 12, comprising the steps of: step (1A): immersing an object to be cleaned in the cleaning agent according to claim 12; and, a step (1B): a step of generating a vapor containing the component (a) from the cleaning agent according to claim 12, and bringing the generated vapor containing the component (a) into contact with an object to be cleaned.

17. A solvent for dissolving a cured product of a resin, which comprises the solvent composition according to any one of claims 1 to 11.

18. The dissolving agent according to claim 17, wherein the resin is 1 or more selected from the group consisting of an acrylic resin, a polycarbonate resin, an acrylonitrile/butadiene/styrene resin, a silicone resin, a polyamide resin, a urethane resin, a polyacetal resin, an epoxy resin, a styrene resin, and a polyvinyl chloride resin.

19. An adhesive agent for a cured product of a resin, which uses the solvent composition according to any one of claims 1 to 11.

20. The adhesive according to claim 19, wherein the resin is 1 or more selected from the group consisting of an acrylic resin, a polycarbonate resin, an acrylonitrile/butadiene/styrene resin, a silicone resin, a polyamide resin, a urethane resin, a polyacetal resin, an epoxy resin, a styrene resin, and a polyvinyl chloride resin.

21. A coating agent for a resin, which is obtained by dissolving a cured product of the resin in the solvent composition according to any one of claims 1 to 11.

22. The coating agent according to claim 21, wherein the resin is 1 or more selected from the group consisting of an acrylic resin, a polycarbonate resin, an acrylonitrile/butadiene/styrene resin, a silicone resin, a polyamide resin, a urethane resin, a polyacetal resin, an epoxy resin, a styrene resin, and a polyvinyl chloride resin.

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