JPH0693295A - Detergent composition for optical part - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Cleaner composition for optical components or jigs used in the manufacturing process that has excellent rinsing properties, is not likely to cause environmental pollution, and is highly safe. Providing goods. [Structure] The composition contains (A) compound I and (B) compound II, and the compounding ratio (weight ratio) is (A) component / (B) component = 90/10 to 5/95. R ¹ (X) R ² I (In the formula, R ¹ represents a hydrocarbon residue having 1 to 24 carbon atoms,
X is ^{-C (R 3) (R 4} ) -, - COO -, - CO-,
^{-O -, - N (R 1} ) - or ^{-C (= O) -N (R} 3)
Is a group, R ² represents a hydrocarbon residue having ^{3 to} 18 carbon atoms, and R ³ and R ⁴ represent H or a hydrocarbon residue having 1 to 18 carbon atoms. ) R (Y) _(AO) in n ^{R 5} II (wherein, R represents a hydrocarbon residue having 1 to 8 carbon atoms, Y is -O -, - COO -, - NH- or And m is a number of 1 to 20, A is an alkylene group having 2 to 4 carbon atoms, n is a number of 1 to 20 and R ⁵ is H or a hydrocarbon residue having 1 to 8 carbon atoms. Indicates a group. )

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition, more specifically, a stain present on a polished surface of an optical component such as glass and a lens, or a treatment used for the stain. Dirt adhering to tools such as fingerprints, grinding oil, glass fixing pitch, adhesive, protective film,
The present invention relates to a cleaning composition having excellent rinsability that is used to remove contaminants such as abrasives and dust.

[0002]

2. Description of the Related Art Conventionally, as a cleaning agent of this kind, a fluorine-based cleaning agent containing a fluorine-based solvent as a main component and a chlorine-based solvent such as trichloroethylene, perchlorethylene, trichloroethane, ethylene chloride or the like as a main component. A chlorine-based cleaning agent is used.

[0003]

However, cleaning agents using fluorine-based and chlorine-based solvents have major problems in safety, toxicity, environmental pollution and the like. Further, in the case of the cleaning agent for optical parts, if the cleaning agent remains on the surface of the object to be cleaned after cleaning, it may adversely affect the coating in the next step, so that the rinsability after cleaning becomes a problem.

Therefore, an object of the present invention is to remove stains existing on the polishing surface of the optical component in the manufacturing process of optical components such as glass and lenses, or stains attached to jigs and tools used in the manufacturing process. As a cleaning composition for removing contaminants such as fingerprints, grinding oil, glass fixing pitch, adhesives, protective films, abrasives, dust, etc., it has excellent rinsability and there is no risk of environmental pollution. Moreover, it is to provide a highly safe detergent composition.

[0005]

Means for Solving the Problems As a result of intensive studies, the inventors of the present invention have found that a detergent composition in which two kinds of specific compounds are combined in a specific ratio achieves the above object. I found out.

The present invention was made based on the above findings, and (A) a compound represented by the following [Chemical Formula 3] (the same as [Chemical Formula 1]) and (B) the following [Chemical Formula 4] ([Chemical Formula 2] The same as the above]), and the compounding ratio (weight ratio) of the component (A) to the component (B) is (A) component / (B) component =
The present invention provides a cleaning composition for optical tools or jigs and tools used in the manufacturing process thereof, which is 90/10 to 5/95.

[0007]

[Chemical 3]

[0008]

[Chemical 4]

The cleaning composition of the present invention will be described in detail below. Examples of the component (A) of the present invention include the following compounds.

Examples of compounds in which X in the above [Chemical Formula 3] is the following [Chemical Formula 5] include alkylbenzenes such as ethylbenzene, cumene, p-cymene, etc .;
Octene, dodecene, tetracene, tetrapropylene,
Tetraisobutylene and the like; olefin polymers; compounds having a cyclohexene ring, such as limonene and pinene.

[0011]

[Chemical 5]

Further, as the compound in which X in the above-mentioned [Chemical Formula 3] is -COO-, coconut fatty acid methyl, isopropyl myristate, 2-ethylhexyl stearate, methyl laurate, methyl oleate, isobutyl oleate, etc. Further, butyl acrylate, 2-ethylhexyl acrylate, benzyl methacrylate and the like can be mentioned.

Examples of the compound in which X in the above [Chemical formula 3] is -CO- include diisobutyl ketone, 2,
6,8, trimethyl 4-nonane, isophorone, and the like, and examples of the compound in which X in the above [Chemical formula 3] is -O- include dihexyl ether, dibenzyl ether, and the like.

X in the above [Chemical formula 3] is the following [Chemical formula 6]
Examples of the compound represented by: include dimethyllaurylamine, dimethylmyristylamine, dilaurylmonomethylamine, trioctylamine, and the like. Further, as the compound in which X in the above [Chemical Formula 3] is the following [Chemical Formula 7], ,
N, N-dimethylacetanilide and the like can be mentioned.

[0015]

[Chemical 6]

[0016]

[Chemical 7]

Among these compounds, particularly preferable ones are
X in the above [Chemical Formula 3] is the above [Chemical Formula 5], which is a compound having an alkylbenzene having an unsaturated bond of a hydrocarbon, an olefin, or a cyclohexene ring. In addition, compounds such as methyl laurate and methyl oleate in which X in the above [Chemical Formula 3] is —COO— are also particularly preferable.

The component (A) has a viscosity at 20 ° C. of preferably 0.5 to 10 cp, more preferably 0.5 to 8 cp,
Particularly preferably, it is 0.5 to 5 cp. If the viscosity at 20 ° C. is less than 0.5 cp, the detergent composition has high flammability,
Safety during cleaning may be an issue. Also, 10 cp
If it is more than the above range, the cleaning performance may be insufficient for the dirt substance in the narrow gap.

The above-mentioned component (A) is used alone or in combination of two or more kinds, and the compounding amount thereof is 5 to 8 in the detergent composition.
0% by weight is preferred.

The component (A) of the present invention is a well-known industrial chemical, and a commercially available product may be used.

The component (B) of the present invention has 1 to 1 carbon atoms.
In the presence of a catalyst such as a caustic alkali, an alkylene oxide having 2 to 4 carbon atoms (ethylene oxide, propylene oxide, butylene oxide, etc.) is added to 8 alcohol, fatty acid or amine in a liquid or gaseous state and reacted. It is obtained by Random addition polymerization in which two or more kinds of alkylene oxides are mixed and reacted, or block addition polymerization in which alkylene oxides are sequentially added may be performed. The polyalkylene ether thus obtained is purified to remove unreacted substances and catalyst (B).
Used as an ingredient. Further, a compound in which the terminal hydroxyl group of the polyalkylene ether is methylated, ethylated or butylated with alkyl chloride or the like (B) of the present invention
Included in the ingredients.

Examples of the alcohol having 1 to 8 carbon atoms used for producing the component (B) of the present invention include:
Methanol, ethanol, n-propanol, butanol, hexanol, octanol, 2-ethylhexanol, cyclohexanol, benzyl alcohol and the like can be mentioned. In addition, examples of the above-mentioned fatty acids and amines having 1 to 8 carbon atoms include those corresponding to these alcohols.

Among the compounds of the component (B), particularly preferred are diethylene glycol monobutyl ether, diethylene glycol monohexyl ether, diethylene glycol mono-2-ethylhexyl ether, dipropylene glycol monobutyl ether, dipropylene glycol monopropyl ether, diethylene glycol diethyl ether. And glycol ethers such as diethylene glycol dibutyl ether and triethylene glycol dimethyl ether.

By blending the component (B), the viscosity of the composition is reduced, the cleaning property is improved, the hydrophilicity is improved, and the rinsing is facilitated.

If m or n in the above [Chemical Formula 4] exceeds 20, the viscosity of the component (B) increases, and the amount taken out from the cleaning liquid to the rinse tank increases, which is not preferable. 1 or 5 is preferable for m or n. Further, when the carbon number of R in the above [Chemical formula 4] exceeds 8, the viscosity becomes high,
In addition, the detergency and the water rinsing property decrease. R has 1 carbon
~ 6 are preferred.

The above-mentioned component (B) is used alone or in combination of two or more kinds, and the blending amount thereof is 10 to 10 in the detergent composition.
90% by weight is preferred.

The detergent composition of the present invention containing the above components (A) and (B) has a viscosity at 40 ° C. of preferably 0.5 to 20 cp, more preferably 1 to 15 cp. When the viscosity is less than 0.5 cp, the detergent composition has high flammability, which may cause a safety problem during cleaning. If it is more than 20 cp, the cleaning property may be inferior to the dirt substance in the narrow gap. The viscosity referred to in the present invention is measured according to JIS-K2283.

Further, in the detergent composition of the present invention, the compounding ratio (weight ratio) of the component (A) and the component (B) is (A) component / (B) component = 90/10 to 5 / 95, preferably 70/30 to 5/95. If the blending ratio is out of the above range, either water rinsing property or detergency is impaired.

The detergent composition of the present invention comprising the above components (A) and (B) has excellent solubility in organic contaminants, but when the amount of component (A) is large, the solubility in water is high. Since the water content becomes low, poor rinsing may occur when rinsing with water. In addition, when the cleaning composition of the present invention contains water, it may have poor product stability due to its low solubility in water. In such a case, a nonionic surfactant may be added, and the addition of such an activator improves the above problems.

Examples of the nonionic surfactants include polyoxyalkylene alkyl ether, polyoxyalkylene alkylphenol ether, polyoxyalkylene alkyl fatty acid ester, polyoxyalkylene allylphenol ether, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene alkyl. Amine, sorbitan fatty acid ester, polyoxyalkylene and the like are preferably used, and among these, average HLB4 to
No. 15 exhibits particularly excellent effects. Here, the polyoxyalkylene refers to a polymer of any one of ethylene oxide, propylene oxide and butylene oxide, or a mixture thereof. The HLB in the present invention is calculated based on Griffin's HLB theory.

When the above nonionic surfactant is used, its content is preferably 0.5 to 35% (% by weight, the same applies hereinafter), more preferably 3 to 30%, based on the detergent composition. Is. If the compounding amount is less than 0.5%, the compounding effect is not recognized, and if it exceeds 35%, the viscosity of the composition increases.

From the viewpoint of safety and workability, the detergent composition of the present invention may contain water as appropriate. The content of water is preferably 5 to 50% in the detergent composition.
If the blending amount is less than 5%, the cleaning composition may have high flammability, and safety during cleaning may be a problem.
If it is more than%, the detergency may become insufficient.

In addition, the detergent composition of the present invention may contain other surfactants, if necessary, as long as the effect thereof is not impaired.
A defoaming agent such as silicon and an anticorrosive agent such as alkanolamine may be added.

The detergent composition of the present invention can be produced by mixing the above-mentioned components (A) and (B) and the like in a conventional manner.

The method of cleaning using the cleaning composition of the present invention is not particularly limited. For example, ultrasonic cleaning or immersion cleaning is performed using the cleaning composition of the present invention, and finally rinsing with a solvent or warm water. A method of continuously performing the above methods is an efficient cleaning method. Further, various cleaning methods such as a vibration method and a spray method may be used.

[0036]

The cleaning composition of the present invention removes stains present on the polished surface of optical parts such as glass and lenses, or stains adhered to jigs and tools used in the manufacturing process in the manufacturing process of optical parts such as glass and lenses. It is used to clean,
The contaminants existing on the surface of the object to be cleaned are removed by the action of the components (A) and (B). Further, after cleaning, the cleaning composition of the present invention that remains on the surface of the object to be cleaned is washed away by rinsing the object to be cleaned with water or the like.

[0037]

The present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited to these examples.

Examples 1 to 10 and Comparative Examples 1 to 9 Cleaning agent compositions having the compositions shown in [Table 1] and [Table 2] below were prepared, and each cleaning agent composition was capable of removing contaminants. (Detergency), rinsing property (rinsing property) and product stability were evaluated as follows. The results are shown in [Table 1] and [Table 2] below.

(Evaluation method of removability of contaminants and rinsing property) Five spherical lenses each having a diameter of 40 mm and a thickness of 7 mm coated with grinding oil or pitch were immersed in each cleaning composition at 5 ° C. and 60 ° C. Wash for 3 minutes while applying ultrasonic waves,
At that time, the removability of contaminants was visually evaluated. Then, the above spherical lens washed with the detergent composition is heated to 20 ° C.
Rinsing treatment was performed with the ion-exchanged water, and the quality of the rinsing property was visually evaluated. The evaluation criteria for the dirt substance removability and the rinsing property are as follows.

Evaluation criteria for removability of contaminants ⊚: No contaminants (grinding oil or pitch) are left behind, which is very good. ◯: Good with almost no residual dirt. Δ: Slightly unacceptable, with some residual dirt substances. X: A dirty substance remains and is bad.

Evaluation criteria for rinsing property ⊚: Very good. ○: Good. Δ: Slightly inferior ×: Bad.

(Evaluation Method of Product Stability) The appearance of each cleaning composition was visually evaluated at room temperature according to the following evaluation criteria.

Evaluation Criteria for Product Stability ◯: Uniformly transparent. Δ: Some separation or turbidity. X: Completely separated.

[0044]

[Table 1]

[0045]

[Table 2]

[0046]

Industrial Applicability The cleaning composition of the present invention has excellent rinsing properties as a cleaning composition for optical parts such as glass and lenses or jigs and tools used in the manufacturing process thereof, and has chlorofluorocarbon and the like. It does not pollute the environment because it does not use, and is highly safe. Further, the detergent composition of the present invention can further enhance the detergency by controlling its viscosity to 20 cp (40 ° C.) or less.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location C08K 5/20 C08L 71/02 LQC 9167-4J // (C11D 7/60 7:26 7:32 )

Claims (3)

[Claims] 1. A compounding ratio of (A) the compound represented by the following [Chemical formula 1] and (B) the compound represented by the following [Chemical formula 2], and the compounding ratio of the component (A) and the component (B). (Weight ratio): (A) component / (B) component = 90/10 to 5/95 A cleaning composition for optical parts or jigs and tools used in the manufacturing process thereof. [Chemical 1] [Chemical 2] 2. The cleaning composition according to claim 1, which contains 0.5 to 35% by weight of a nonionic surfactant. 3. The cleaning composition according to claim 1, which contains 5 to 50% by weight of water.