JPH03111496A - Detergent - Google Patents

Abstract

PURPOSE:To provide a detergent which has an effect equivalent to that of a chlorine-containing or a chlorofluorocarbon detergent and causes less environmental pollution by compounding a specific surfactant with an aromatic oxygen compound solvent. CONSTITUTION:A detergent comprising 2-40wt.% surfactant preferably having an HLB value of 10 to 16 given by the formula [where Z represents a residue of a compound having 2 to 8 hydroxyl groups; AO represents a 3-18C oxyalkylene; R<1> represents a 1-24C hydrocarbon group; COR<2> represents a 2-22C acyl group; (a), (b), (c), (d), (e) and (f) each are zero or more, (g), (h) and (i) each are zero or more, (g+h+i)=2-8, (dg+eh+fi)>=1 and (a+d)g+(b+e)h+(c+f) i=1-500] and an aromatic oxygen compound solvent preferably having a melting point of 40 deg.C or below, selected from among ketones, ethers, alcohols and carboxylic acid esters each having an aromatic group.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a cleaning agent that causes less environmental pollution.

[Conventional technology]

Traditionally, chlorinated solvents such as Triku-aVX ethylene and tetrachloroethylene, or Triku-based solvents have been used to clean liquid crystals when manufacturing home appliances, to clean solder blacks, oils, and grease when making printed circuit boards, and to clean household oil stains. +
Freon-based solvents such as =+p monofluoromethane () pn R-11), tric I:I logifluorop ethane (fluorocarbon R-112), and tric pc1 triple oethane (7a pn R-113) are used. .

[Problem to be solved by the invention]

However, in recent years, it has been discovered that chlorinated solvents accumulate in nature and have a negative impact on living systems, and that fluorocarbon solvents destroy the ozone layer in the atmosphere, leading to environmental pollution caused by the use of these solvents. has become a major problem on a global scale. For this reason, the use of these falcon-based solvents or fluorine-based solvents is currently being banned, and there is a strong demand for cleaning agents that cause less environmental pollution.

An object of the present invention is to provide a cleaning agent that has an effect equivalent to that of chlorine-based or fluorine-based cleaning agents and causes less environmental pollution.

[Means to solve the problem]

The present inventors have discovered that a cleaning agent that combines an aromatic oxygen-containing compound solvent and an ether type nonionic surfactant has excellent cleaning power, can be easily removed by washing with water, and has little environmental pollution. They discovered this and arrived at the present invention.

That is, the present invention combines an aromatic oxygen-containing compound solvent and the general formula (
This is a cleaning agent consisting of a surfactant represented by No. 11.

(2 is the residue of a compound having 2 to 8 hydroxyl groups, AO is an oxyalkylene group having 3 to 18 carbon atoms, R1 is a 7 to 22
Syl group, a≧0, b≧0. c≧0. d≧0, e≧O, f
≧o, g, h and l are 0 or positive integers, g+h+1=2
~8. dg+sh+fi≧1, (a+a)g+(b+
a) h+(c+f)l=1-500. ) In general formula (1), compounds having 2 to 8 hydroxyl groups with 2 as a residue include ethylene glycol, propylene glycol, and butylene glycol.

Hexylene glycol, styrene glycol, carbon number 8
-18 Glycols such as fullkylene glycol and neopentyl glycol; glycerin, diglycerin, polyglycerin, trimethy p-lethane, trimethylolpropane, 1,3.5-pentanetriol, erythritol, pentaerythritol, dipentaerythritol, Sorbitol, sorbitan, sorbite, condensates of sorbitol and toglycerin, polyhydric alcohols such as adonyl, arabitol, xylitol, mannitol, or partially etherified or esterified products thereof; xylose, arabinose, ribose, rhamnose, glucose , fructose, galactose, mannose, sorbose, cellobiose, maltose, inmaltose, trehalose, shakerose, raffinose, gentianose, melezitose, or their partially etherified or esterified products; phenols such as catechol, resorcinol, hydroquinone, fluroglucin, etc. can be mentioned.

The oxyalkylene group having 3 to 18 carbon atoms represented by AO includes oxypropylene group, oxystyrene group, oxytetramethylene group, oxystyrene group, oxyalkylene group, oxytetramethylene group, oxyhexadecylene group, oxyocta The decylene group is mentioned, and these are 1
Only one species may be added, or two or more species may be added at the same time, such as a methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, tert-butyl group, pentyl group, impentyl group. , hexyl group, heptyl group, 2
-Ethylhexyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group.

Tridecyl group, tetradecyl group, hexadecyl group, inhexadecyl group, octadecyl group, inoctadecyl group, oleyl group, octyldodecyl group, tocosyl group, decyltetradecyl group, benzyl group, cresyl group, butylphenyl group, dibutylphenyl group, octylphenyl group,
Nonylphenyl group, dodecylphenyl group, dioctylphenyl group, dinonylphenyl group, styrenated phenyl group, etc.

Examples of the acyl group having 2 to 22 carbon atoms represented by "COR" include acetic acid, propionic acid, butyric acid, isobutyric acid, caprylic acid,
pelargonic acid, 2-ethylhexanoic acid, nonanoic acid, capric acid, undecylenic acid, lacric acid, myristic acid,
Parzetatic acid, margaric acid, stearic acid, arachidic acid, behenic acid.

Pal j) Leic acid, oleic acid, linoleic acid, linolenic acid, erucic acid, isopalmitic acid, instearic acid, benzoic acid, hydroxybenzoic acid, seed sugar compound The minimum amount to make the solvent emulsifiable in water 1 mole is necessary. A
It is preferable that O be present in order to make the waste water after washing less foamy, but it may not be present. In addition, the total number of added moles of oxyalkylene groups and oxyethylene groups must be at least 2 moles of K in order to have surfactant ability, and if it exceeds 500 moles, the viscosity increases significantly and it becomes difficult to use.
It needs to be 0 mole or less. In addition, since the content of oxyethylene groups varies depending on the combination of aromatic oxygenating agents, the amount of oxyethylene group is preferably 20% by weight or more based on the molecular weight.

Also.

The oxyalkylene group and the oxyethylene group may be added in a boot-like manner or may be added in a random manner.

Examples of aromatic oxygen-containing compound solvents include ketones, ethers, alcohols, and carboxylic acid esters having an aromatic group, and those having an aromatic group and an oxygen atom are used.

If the ketone has an aromatic group, [is, for example, - maximum (2)
There is a ketone represented by

(R3 is a furkyl group, hydroxyl group, or amine group having 1 to 9 carbon atoms, k is O to 5, and R4 is a hydrocarbon group having 1 to 22 carbon atoms.) Alkyl having 1 to 9 carbon atoms represented by R3 Examples of the group include methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, tert-butyl group, pentyl group, hexyl group, heptyl group, 2-ethylhexyl group, octyl group, nonyl group, and the like.

The carbon fi1-22 hydrocarbon group represented by R4 includes a methyl group, an ethyl group, a propyl group, an isopropyl group,
Butyl group, isobutyl group, tert-butyl group, pentyl group,
Impentyl group, hexyl group.

Heptyl group, 2-ethylhexyl group, octyl group, nonyl group, decyl group, dodecyl group, intridecyl group, tetradecyl group, hexadecyl group, inhexadecyl group, octadecyl group, inoctadecyl group, oleyl group, octyldodecyl group, behenyl group , decyltetradecyl group,
Benzyl group, cresyl group, butylphenyl group, digtylphenyl group.

Examples include octylphenyl group, nonylphenyl group, dodecylphenyl group, dioctylphenyl) 1MS styrenated phenyl group, and the like.

Aromatic groups can also be treated as phethers, for example - maximum (3
) is an ether.

(R5 is an alkyl group, hydroxyl group, or ami7 group having 1 to 9 carbon atoms, t is O to 5, R6 is a hydrocarbon group having 1 to 5 carbon atoms, m is 0 or 1, and R7 is 1 to 22 carbon atoms. ) The alkyl group having 1 to 9 carbon atoms represented by R5 is exemplified by R3 in general formula (2).

The hydrocarbon group having 1 to 5 carbon atoms represented by R6 includes methylene group, ethylene group, ethylidene group, propylene fj
, impropylidene group, butylene group, vinylene group, propenylene s, etc.

The hydrocarbon group having 1 to 22 carbon atoms represented by R7 is
- There are some examples of maximum (2) R4.

Furfur with an aromatic group is, for example, −maximum (
There are alcohols shown in 4).

(R11 is a furkyl group, methoxy group, or hydroxyl group having 1 to 9 carbon atoms, n is θ to 5, R9 is a hydrocarbon group having 1 to 5 carbon atoms, p is 0 or 1, R"O is a carbon number 2 to 18 oxyfulkylene group, q is O-5.) As the alkyl group having 1 to 9 carbon atoms represented by R11, -maximum (2)
There is one exemplified in R4.

The hydrocarbon group having 1 to 5 carbon atoms represented by R9 is -
There is an example of R6 in formula (3).

The oxyfulkylene group having 2 to 18 carbon atoms represented by R100 includes, in addition to the oxyethylene group, those exemplified by AOK of formula (1).

For carboxylic acid ester h having an aromatic group, -formula (
There are carboxylic acid esters shown in 5).

(R11 is an alkyl group, methoxy group, or hydroxyl group having 1 to 9 carbon atoms, r is 0 to 5, R1 is a hydrocarbon group having 1 to 5 carbon atoms, II is 0 or 1, Bls is 1 to 5 carbon atoms,
22 hydrocarbon groups, t is 1 or 2. r+t=1-6. ) As the alkyl group having 1 to 9 carbon atoms represented by all,
- There are examples of R3 in formula (2).

The hydrocarbon group having 1 to 5 carbon atoms represented by Rtz is
- There is something exemplified in 86 of formula (3).

Examples of the hydrocarbon group having 1 to 22 carbon atoms represented by R13 include those exemplified by R4 in formula (2).

The aromatic oxygen-containing compound solvent is not particularly limited as long as it has sufficient dissolving power for stains.

If the melting point is high, warm it up before use, or use methanol, ethanol, or isopropyl alcohol.

Since an organic solvent such as acetone, methyl ethyl ketone, or toluene is required, one having a melting point of 40C or less is preferable.

General formula for emulsifying aromatic oxygenate solvents in water (
The preferred HLB of the surfactant is about 1θ to 16, although it varies depending on the type of solvent.

The proportion of the surfactant represented by the general formula (1) in the cleaning agent is the amount necessary to emulsify the aromatic oxygen-containing compound in water as a solvent, and is not particularly specified, but in order not to reduce the cleaning power. The preferred range is 2 to 40% by weight.

〔Effect of the invention〕

The cleaning agent of the present invention combines an aromatic oxygen-containing compound solvent with a high ability to remove oil stains and a surfactant that can emulsify it in water, so it can remove household oil stains and rosin flux on printed circuit boards. Easily remove dirt from LCD screens, etc.? ! It is a cleaning agent that causes less environmental pollution and can be easily rinsed with water and can be easily treated as wastewater.

〔Example〕

A detergency test and a rinsability test were conducted using the detergent of the present invention and a comparative detergent.

The test method is shown below.

(Cleaning power test 1) A slide glass (76 m + 11 x 26 cm) was immersed in a saturated isopropyl alcohol solution of pine resin, and then air-dried and used as a test piece.

The test piece was placed in a 200 d beaker containing 200 d of cleaning agent, and was cleaned using an ultrasonic cleaner for 5 minutes. Next, for K rinsing, the test piece was transferred to a beaker containing 200 d of ion-exchanged water, treated with an ultrasonic cleaner for 2 minutes, taken out, air-dried, and evaluated for appearance.

(Cleaning Power Test 2) A cleaning power test was conducted in the same manner as in Cleaning Power Test 1 using a printed circuit board with liquid crystal attached as a test piece.

(Cleaning Kabusto 3) A detergency test was carried out in the same manner as in the detergency test 1 using a test piece to which tempura oil was applied as a test piece.

Note that detergency tests 1 to 3 were evaluated based on the following criteria.

○: Dirt has been removed cleanly.

Δ: Dirt remains partially.

×: Almost no dirt has been removed.

(rinsability test) After soaking a clean glass slide in the cleaning solution.

The mixture was transferred to a beaker containing 100 d of water and stirred for 1 minute using a magnetic stirrer. Next, the test piece was taken out, air-dried, and the texture of the surface was examined.

The rinsability test was evaluated based on the following criteria.

○: No stickiness.

△: Some stickiness remains.

×: Stickiness remains.

Example 1゜Ketones or ethers with aromatic groups shown in Table 2 and Table 1
Tests were conducted on the cleaning agents shown in Table 3, which were made of the surfactants shown in Table 3.

The reflection is shown in Table 4.1 The cleaning agent of the present invention has excellent cleaning power,
It can also be seen that rinsing is easy.

table Note: 1) ( ) indicates random attachment.

2) OR is derived from the acyl group of beef tallow fatty acid.

Table of Contents: 1) A blend of dotecyldimethylamine oxide, polyoxyethylene (20 mol) nonylphenyl ether, sodium tripolyphosphate and sodium metasilicate was used as a 7tt aqueous solution.

Table 4 Example 2 A test was conducted on the cleaning agent shown in Table 6, which was composed of an alcohol having an aromatic group shown in Table 5 and a surfactant shown in Table 1.

As shown in Table 7, the cleaning agent of the present invention has excellent cleaning power.
It can also be seen that rinsing is easy.

table Note: 1) ( ) indicates random addition.

Table note = 1) Same table example as Table 3 λ Carboxylic acid esters with aromatic groups shown in Table 8 IC and Table I
The cleaning agents in Table 9 consisting of K surfactants were tested.

The results are shown in Table 1O, and it can be seen that the cleaning agent of the present invention has excellent cleaning power and is easy to rinse.

table 8 table Note: 1) Same as table 3

Claims (2)

[Claims] 1. A cleaning agent comprising an aromatic oxygen-containing compound solvent and a surfactant represented by general formula (1). ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (Z is the residue of a compound with 2 to 8 hydroxyl groups, AO is an oxyalkylene group with 3 to 18 carbon atoms, R^1 is a carbon number of 1
~24 hydrocarbon group, COR^2 is an acyl group having 2 to 22 carbon atoms, a≧0, b≧0, c≧0, d≧0, e≧0, f
≧0, g, h and i are 0 or positive integers, g+h+i=2
~8, dg+eh+fi≧1, (a+d)g+(b+e
)h+(c+f)i=1-500. ) 2. aromatic oxygen-containing compound solvent is a ketone with an aromatic group,
The cleaning agent according to claim 1, which is an ether, alcohol or carboxylic acid ester.