CN110114197B

CN110114197B - Detergent composition for plastic lens forming glass mold

Info

Publication number: CN110114197B
Application number: CN201780080993.XA
Authority: CN
Inventors: 川下浩一; 大桥秀巳
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2016-12-28
Filing date: 2017-12-27
Publication date: 2021-07-09
Anticipated expiration: 2037-12-27
Also published as: KR20190092585A; JP6894363B2; KR102247736B1; JP2018109162A; WO2018124151A1; CN110114197A

Abstract

In one embodiment, the present invention relates to a detergent composition for a plastic lens molding glass mold, comprising: 20 to 40 mass% of an aromatic alcohol (component A), 2 to 8 mass% of an inorganic base (component B), 4 to 8 mass% of a compound (component C) represented by the following formula (I), 0.1 to 10 mass% of a compound (component D) represented by the following formula (II), and water (component E). In the formula (I), R¹And R²Each independently represents a hydrogen atom, a phenyl group or an alkyl group having 1 to 6 carbon atoms, and n represents-CH₂CH₂The number of moles of O-added is an integer of 1 to 3. In the formula (II), R³And R⁴Each independently represents a hydrogen atom, a hydroxyethyl group, a hydroxypropyl group, an aminoethyl group or an alkyl group having 1 to 6 carbon atoms, R⁵Is hydroxyethyl or hydroxypropyl.

Description

Detergent composition for plastic lens forming glass mold

Technical Field

The present invention relates to a cleaning agent composition for a plastic lens-molding glass mold, a method for cleaning a plastic lens-molding glass mold using the cleaning agent composition, and a method for producing a plastic lens.

Background

In recent years, lenses, prisms, and the like for optical instruments such as spectacle lenses, contact lenses, camera finders, photographing lenses, projection television lenses, large-screen fresnel lenses, lenticular lenses, sunlight condensing lenses, high-beam projector fresnel lenses, optical disk lenses, objective lenses for optical storage devices, and the like have been shifting from glass materials to plastic materials. In particular, in the case of glasses lenses, since a (hard) coating technology for preventing surface scratches is developed, scratch resistance reaches a level that does not cause problems in practical use, and a material having a high refractive index is developed, enabling thinner and lighter lenses to be processed, and thus, the conversion rate from glass to plastic is remarkably increased.

Resin stains such as resin for plastic lenses, adhesive, and binder, which are adhered to optical components such as plastic lenses, or glass molds and jig tools used in the production process thereof, are firmly adhered (bonded) to the hard surface, and the resin stains themselves have a high molecular weight, and therefore, cleaning using a chemical utilizing dissolution, swelling, softening, disintegration, and peeling effects is very difficult. Among them, in the production of plastic lenses, the resin for plastic lenses adhering to the glass mold has a very high molecular weight and is one of the most difficult resin stains to clean.

As the resin for plastic lenses, a resin obtained by radical polymerization of diethylene glycol bisallylcarbonate, a methacrylic resin, a fumarate/allylic monomer copolymer resin, a triazine ring acrylic resin, a polycarbonate resin, a bromine-containing resin, a polyurethane resin, a sulfur-containing polyurethane resin, a thioether ester resin, or the like can be used. The most widely used resin for plastic lenses is a resin obtained by radical polymerization of Allyl Diglycol Carbonate (ADC). However, resin materials having higher refractive indices have recently been developed. Typical examples thereof include sulfur-containing plastic lens resins having a refractive index of 1.55 or more, such as sulfur-containing urethane resins, sulfur-containing epoxy resins, polythio (meth) acrylate resins, sulfur-containing poly (meth) acrylate resins, and episulfide resins.

A method for manufacturing a typical plastic lens is performed by injecting a monomer of a forming material into a mold, and then heating and polymerizing the monomer, wherein the mold includes a pair of glass molds having an inner surface with a predetermined curvature, and a ring-shaped packing (gasket) or tape made of a synthetic resin attached to an outer peripheral side thereof. After the polymerization step, the annular filler is taken out of the mold, and the glass mold and the plastic lens base material are released from the mold. Since the outer peripheral portion of the manufactured plastic lens base material has an uneven shape, the outer peripheral portion is formed, and the edge portion is chamfered, and the plastic lens base material is sent to a cleaning step. The surface of the lens is treated with a surface treatment such as dyeing, hard coating, antireflection coating, and water-based coating after cleaning oligomer and polymer-like dirt adhering to the lens surface at the time of mold release, polymer powder adhering at the time of peripheral molding and chamfering, unreacted monomer remaining on the lens surface, and dust in other atmosphere.

At this time, the used glass mold is cleaned and used again as a mold. In the case of plastic lenses for spectacles, the number of kinds of lenses is as many as thousands, and many kinds are produced in small quantities, so that the amount of glass molds required is extremely large, and the production cost per plastic lens becomes high. Therefore, if one glass mold can be reused many times, the proportion of expenses taken by the glass mold in the manufacture of the plastic lens is reduced, with the result that the plastic lens can be economically advantageously manufactured. Since a glass mold used for manufacturing a plastic lens is very expensive, it is reused several hundreds to several thousands times unless it is broken. Therefore, like the plastic lens itself, when the monomer is injected, it is necessary to clean oligomer and polymer-like dirt and the like from the overflowing raw material. If the glass mold is not clean, it is impossible to obtain a high-quality plastic lens having a smooth surface, and the glass mold has to be discarded. The result is also very uneconomical. In this context, the following detergent compositions and cleaning methods have been proposed.

For example, patent document 1 discloses a detergent composition for resin stains containing an aromatic monocyclic compound, a compound such as 1, 4-butanediol, a glycol ether compound, and a glycol compound, a detergent composition for resin stains containing an aromatic compound, a metal sealing agent, an alkali metal hydroxide, and water, and a method for cleaning resin stains using the above detergent composition, as a detergent composition for resin stains having excellent cleaning performance and safety against resin stains.

Patent document 2 discloses a detergent composition for a plastic lens-forming glass mold, which has excellent detergency to high-molecular-weight resin stains, excellent safety to the human body during cleaning, and does not corrode a formed glass mold, and a method for cleaning the glass mold using the detergent composition, as a detergent composition for a plastic lens-forming glass mold, comprising: 10 to 94 wt% of aromatic compound, 0.1 to 50 wt% of alkaline agent, 0.005 to 25 wt% (calcium ion equivalent) of calcium ion releasing substance, and 5 to 89 wt% of water.

Patent document 3 discloses a detergent composition having high detergency against stains of a sulfur-containing plastic lens resin having a refractive index of 1.55 or more, which contains: (a) 2 to 30 wt% of an inorganic alkaline agent, (b) 0.5 to 20 wt% of at least one surfactant selected from anionic surfactants and nonionic surfactants, (c) 0.01 to 2 wt% of calcium salt [ in terms of calcium ion ], (d) 0.1 to 15 wt% of a calcium ion scavenger, (e) 1 to 30 wt% of a water-soluble organic solvent, and (f) 20 to 95 wt% of water.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 9-263792

Patent document 2: japanese laid-open patent publication No. 11-131096

Patent document 3: japanese patent laid-open No. 2006-124696

Disclosure of Invention

Problems to be solved by the invention

Plastic lens-forming glass molds are expensive. In order to improve the productivity of plastic lenses, a cleaner composition is required which can maintain precision even when a glass mold is repeatedly used, and specifically, for example, a cleaner composition which can suppress deterioration, such as corrosion, of a surface (hereinafter also referred to as "glass mold surface") which comes into contact with a plastic substrate of a glass mold and has excellent removal performance of a resin adhering to the glass mold (hereinafter also referred to as "cleanability"). In recent years, in consideration of the influence on the environment, a detergent composition having an environmental load as low as possible, specifically, for example, a detergent which is difficult to reduce the cleaning performance even if repeatedly used for a long period of time (hereinafter, the reduction of the cleaning performance even if repeatedly used is referred to as "high durability") has been demanded.

Accordingly, the present invention provides a cleaning agent composition for a plastic lens molding glass mold, which can achieve corrosion inhibition of the surface of the glass mold, high cleaning performance, and high durability at the same time, a cleaning method using the cleaning agent composition, and a method for producing a plastic lens.

Means for solving the problems

The present invention relates to a cleaning composition for a plastic lens molding glass mold, comprising: 20 to 40 mass% of an aromatic alcohol (component A), 2 to 8 mass% of an inorganic base (component B), 4 to 8 mass% of a compound (component C) represented by the following formula (I), 0.1 to 10 mass% of a compound (component D) represented by the following formula (II), and water (component E),

in the above formula (I), R¹And R²Each independently represents a hydrogen atom, a phenyl group or an alkyl group having 1 to 6 carbon atoms, and n represents-CH₂CH₂The number of moles of O-added is an integer of 1 to 3.

In the above formula (II), R³And R⁴Each independently represents a hydrogen atom, a hydroxyethyl group, a hydroxypropyl group, an aminoethyl group or an alkyl group having 1 to 6 carbon atoms, R⁵Is hydroxyethyl or hydroxypropyl.

The present invention relates to a method for cleaning a plastic lens molding glass mold, including a step of cleaning a plastic lens molding glass mold to which a resin for a plastic lens has adhered, with the use of the cleaning composition according to the present invention.

The present invention relates to a method for producing a plastic lens, including a step of cleaning a plastic lens molding glass mold to which a resin for a plastic lens has adhered, using a cleaning composition according to the present invention.

The present invention relates to a method for manufacturing a plastic lens, in which a method for cleaning a plastic lens molding glass mold according to the present invention is included in a manufacturing process.

The present invention relates in one embodiment to the use of a cleaning composition according to the present invention for cleaning glass molds for the molding of plastic lenses.

The present invention relates to a use of the cleaning composition according to the present invention for peeling a resin for a plastic lens from a glass mold to which the resin for a plastic lens is adhered.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, it is possible to provide a cleaning agent composition for a plastic lens-molding glass mold, which can achieve corrosion inhibition of a glass mold surface, high cleaning performance, and high durability at the same time, and a method for cleaning a plastic lens-molding glass mold and a method for producing a plastic lens using the cleaning agent composition. Further, by using the detergent composition according to the present invention, a high-quality plastic lens can be obtained.

Drawings

Fig. 1 is a flowchart illustrating an example of the method for manufacturing a plastic lens according to the present invention.

Detailed Description

The present invention is based on the following findings: when the cleaning agent composition containing the components A to D in predetermined amounts is used for cleaning a plastic lens molding glass mold, the resin for plastic lens (hereinafter sometimes simply referred to as "resin") remaining on the surface of the glass mold can be effectively cleaned while corrosion of the surface of the glass mold is suppressed, and the quality of the plastic lens is not deteriorated even after repeated use for a long period of time.

That is, the present invention relates to a cleaning composition for a plastic lens molding glass mold (hereinafter, also referred to as "cleaning composition according to the present invention") comprising: 20 to 40 mass% of an aromatic alcohol (component A), 2 to 8 mass% of an inorganic base (component B), 4 to 8 mass% of a compound (component C) represented by the following formula (I), 0.1 to 10 mass% of a compound (component D) represented by the following formula (II), and water (component E). According to the present invention, it is possible to provide a cleaning agent composition for a plastic lens-molding glass mold, which can achieve corrosion inhibition of a glass mold surface, high cleaning performance, and high durability at the same time, and a method for cleaning a plastic lens-molding glass mold and a method for producing a plastic lens using the cleaning agent composition. Further, by using the detergent composition according to the present invention, a high-quality plastic lens can be obtained.

The action mechanism of the effect of the detergent composition according to the present invention is not specifically defined, but is presumed as follows.

The resin for a plastic lens adhered to the glass mold is a chemically stable material, and is difficult to remove the resin from the glass mold by combining protection of the glass mold and decomposition of the resin, and a common method is a method of peeling the resin by acting on an interface between the glass mold and the resin in order to remove the resin. In particular, sulfur-containing plastic lenses that achieve high refraction tend to be chemically stable and have high adhesion strength on glass. Therefore, in order to remove the resin from the glass mold, a method of allowing a cleaning agent to penetrate into an interface between the glass mold and the resin and efficiently peeling the resin from the glass mold by mechanical force such as stirring or ultrasonic waves is often employed.

The presence of the inorganic base (component B) in the detergent composition of the present invention promotes cleavage by hydrolysis of an ester bond slightly present in the resin or neutralization of residual acid groups, thereby promoting peeling of the resin from the glass surface. On the other hand, by allowing the aromatic alcohol (component a) to coexist with both the compound represented by the formula (I) (component C) and the compound represented by the formula (II) (component D), and allowing each of the components a, C, and D to have a specific concentration, the component a having a low solubility in water can have an improved affinity for water even in a situation where the solubility of the component a in water is lowered and mechanical force due to stirring or the like is small due to the presence of the component B. Therefore, the component a easily permeates into the interface between the resin adhering to the glass mold and the glass mold, and promotes the peeling of the resin from the glass mold. Further, it is presumed that, by the components a to D being at specific concentrations, the detergent composition can maintain the solubility of the component a in water without lowering the releasability and can maintain high cleanability even when it is affected by accumulation of resin dirt, absorption of carbon dioxide in the air, volatilization of a highly volatile component, deterioration due to local overheating, and the like in repeated cleaning for a long period of time. It is further presumed that by setting the concentration of the component B to 2 mass% or more and 8 mass% or less, excessive corrosion of the surface of the glass mold can be suppressed while maintaining high cleanness, and by the presence of the components C and D, corrosion of the surface of the glass mold can be further suppressed. However, the present invention should not be construed as being limited to this mechanism.

In the detergent composition according to the present invention, when the following anionic surfactant (component F) is contained as an optional component, it is presumed that the solubility of the component a in water can be improved, and the component F is adsorbed on the surface of the glass mold, and the corrosion of the component B on the surface of the glass mold can be further suppressed.

In the detergent composition according to the present invention, when the following calcium is contained as an optional component, it is presumed that the corrosion of the surface of the glass mold by the component B can be further suppressed by adsorbing the calcium to the surface of the glass or forming a calcium salt with the component F and the following gluconic acid or a salt thereof (component G) and adsorbing the calcium to the surface of the glass.

In the case where the component G is contained as an arbitrary component in the detergent composition according to the present invention, it is presumed that precipitation of a hardness component such as calcium due to evaporation of water or the like in long-term use can be suppressed by a chelating action possessed by the component G and high solubility of a salt generated in water, and clogging of piping for circulating the detergent composition, precipitation of a precipitate, adhesion of a precipitate to a glass mold, and improvement in cleaning property and productivity can be suppressed.

By the synergistic effect of the above effects, in one embodiment of the detergent composition of the present invention, the workability and the handling stability can be improved, the detergency does not deteriorate even if the cleaning is repeated for a long period of time, the number of times of updating the detergent composition can be reduced, the reuse of a glass mold becomes possible, and the productivity of a high-quality plastic lens can be improved.

However, the present invention should not be construed as being limited to these mechanisms.

The cleaning composition of the present invention is also suitable for a resin for a high refractive index plastic lens having a refractive index of 1.55 or more, which is difficult to peel off, and therefore, is also preferably used for cleaning a glass mold for molding a high refractive index plastic lens having a refractive index of 1.55 or more.

[ component A: aromatic alcohol ]

The detergent composition according to the present invention contains an aromatic alcohol (component A). Component A is a compound having an aromatic ring and a hydroxyl group. The number of carbon atoms of the component a is preferably 7 or more from the viewpoint of improving the cleaning property and the durability, and is preferably 10 or less, more preferably 9 or less from the same viewpoint. Specific examples of the component A include at least one selected from the group consisting of benzyl alcohol, phenethyl alcohol, 4-methylbenzyl alcohol, 4-ethylbenzyl alcohol, 2-phenyl-1-propanol and 2-phenyl-2-propanol, and from the viewpoint of enhancing the cleaning property and enhancing the durability, at least one selected from the group consisting of benzyl alcohol, phenethyl alcohol and 4-ethylbenzyl alcohol is preferable, and benzyl alcohol is more preferable. In the present invention, 1 or 2 or more kinds of the component A may be used.

The content of the component a in the cleaning composition according to the present invention is 20 mass% or more and 40 mass% or less, and is 20 mass% or more, preferably 22 mass% or more, more preferably 25 mass% or more, and further preferably 27 mass% or more from the viewpoint of improving the cleaning property, improving the durability, and suppressing corrosion of the surface of the glass mold, and is 40 mass% or less, preferably 38 mass% or less, more preferably 35 mass% or less, and further preferably 32 mass% or less from the viewpoint of improving the cleaning property and improving the durability. In the present invention, the "content of each component in the cleaning of the detergent composition" refers to the content of each component of the detergent composition used in the cleaning step in one or more embodiments.

[ component B: inorganic base ]

The detergent composition according to the present invention contains an inorganic base (component B). Examples of the component B include ammonia; alkali metal hydroxides such as lithium hydroxide, potassium hydroxide, and sodium hydroxide; and alkali metal weak acid salts such as lithium silicate, lithium carbonate, sodium silicate, sodium carbonate, potassium silicate, and potassium carbonate. From the viewpoint of detergency, the component B is preferably sodium hydroxide and potassium hydroxide, and more preferably potassium hydroxide. In the present invention, 1 or 2 or more kinds of the component B may be used.

The content of the component B at the time of cleaning of the detergent composition according to the present invention is 2 mass% or more and 8 mass% or less, and from the viewpoint of improving the cleaning property, 2 mass% or more, preferably 2.1 mass%, more preferably 2.2 mass% or more, and further preferably 2.3 mass% or more, and from the viewpoint of suppressing corrosion of the surface of the glass mold and improving the durability, 8 mass% or less, preferably 7.5 mass% or less, more preferably 7 mass% or less, further preferably 6 mass% or less, further more preferably 5 mass% or less, further more preferably 4 mass% or less, further more preferably 3.5 mass% or less, and further more preferably 3.3 mass% or less.

[ component C: a compound represented by the formula (I)

The detergent composition of the present invention contains a compound (component C) represented by the following formula (I). In the present invention, 1 or 2 or more kinds of the component C may be used.

In the formula (I), R¹And R²Each independently represents a hydrogen atom, a phenyl group or an alkyl group having 1 to 6 carbon atoms, and n represents-CH₂CH₂The number of moles of O-added is an integer of 1 to 3, preferably 2.

The component C is preferably at least one compound selected from the group consisting of a compound represented by the following formula (III), a compound represented by the following formula (IV), and a compound represented by the following formula (V), more preferably at least one compound selected from the group consisting of a compound represented by the following formula (III) and a compound represented by the following formula (IV), and even more preferably a compound represented by the following formula (III), from the viewpoints of improving cleaning properties, improving durability, and suppressing corrosion of glass.

Wherein in formulae (III), (IV) and (V), n is the same as n in formula (I) and may be different in formulae (III), (IV) and (V), respectively, R⁶An alkyl group having 1 to 6 carbon atoms.

The compound represented by the formula (III) includes phenyl ethylene glycol, phenyl diethylene glycol, and phenyl triethylene glycol, and at least one of these compounds may be contained in 2 or more, and from the viewpoints of improving cleaning performance, improving durability, and suppressing corrosion of glass, phenyl diethylene glycol and phenyl triethylene glycol are preferable, and phenyl diethylene glycol is more preferable.

Examples of the compound represented by the formula (IV) include methyl glycol, methyl diethylene glycol, methyl triethylene glycol, ethyl diethylene glycol, ethyl triethylene glycol, propyl ethylene glycol, propyl diethylene glycol, propyl triethylene glycol, isopropyl ethylene glycol, isopropyl diethylene glycol, isopropyl triethylene glycol, n-butyl diethylene glycol, n-butyl triethylene glycol, isobutyl ethylene glycol, isobutyl diethylene glycol, isobutyl triethylene glycol, tert-butyl diethylene glycol, tert-butyl triethylene glycol, n-hexyl diethylene glycol, and n-hexyl triethylene glycol, and at least one of these compounds may be contained in 2 or more types, and isopropyl glycol, isopropyl diethylene glycol, isopropyl triethylene glycol, n-butyl ethylene glycol, isopropyl triethylene glycol, and n-hexyl triethylene glycol are preferable from the viewpoints of improving the cleaning property, improving the durability, and suppressing the corrosion of glass, N-butyldiglycol, n-butyltriglycol, isobutylethanediol, isobutyldiglycol, tert-butyldiglycol, tert-butyltriglycol, n-hexylethanediol, n-hexyldiglycol, n-hexyltriglycol, more preferably isopropyldiglycol, isopropyltriglycol, n-butyldiglycol, n-butyltriglycol, isobutyldiglycol, isobutyltriglycol, n-hexyldiglycol, n-hexyltriglycol, still more preferably n-hexyldiglycol.

The compound represented by formula (V) includes ethylene glycol, diethylene glycol, and triethylene glycol, and at least one of these compounds may be contained in 2 or more, and from the viewpoint of improving cleaning performance, improving durability, and suppressing corrosion of glass, diethylene glycol and triethylene glycol are preferable, and triethylene glycol is more preferable.

The component C preferably contains all of the compound represented by the formula (III), the compound represented by the formula (IV), and the compound represented by the formula (V), and more preferably contains all of phenyl diethylene glycol, n-hexyl diethylene glycol, and triethylene glycol, from the viewpoints of improving cleanability, improving durability, suppressing corrosion of glass, and improving storage stability.

The content of the component C in the cleaning of the cleaner composition according to the present invention is 4 mass% or more and 8 mass% or less, and is 4 mass% or more, preferably 4.5 mass% or more, more preferably 5 mass% or more, and further preferably 5.5 mass% or more from the viewpoints of improvement of cleaning performance, improvement of durability, and suppression of corrosion of glass, and is 8 mass% or less, preferably 7.5 mass% or less, more preferably 7 mass% or less, and further preferably 6.5 mass% or less from the viewpoints of improvement of cleaning performance, improvement of durability, and suppression of corrosion of glass.

[ component D: compound represented by the formula (II) ]

The detergent composition of the present invention contains a compound (component D) represented by the following formula (II). In the present invention, 1 or 2 or more of the components D may be used in combination.

Wherein, in the formula (II), R³And R⁴Each independently represents a hydrogen atom, a hydroxyethyl group, a hydroxypropyl group, an aminoethyl group or an alkyl group having 1 to 6 carbon atoms, R⁵Is hydroxyethyl or hydroxypropyl.

Examples of the component D include: monoethanolamine, monoisopropanolamine, diethanolamine, diisopropanolamine, N-methylmonoethanolamine, N-ethylmonoethanolamine, N-isopropylmonoethanolamine, N-N-butylmonoethanolamine, N-tert-butylmonoethanolamine, N-N-pentylmonoethanolamine, N-N-hexylmonoethanolamine, N-methylmonoisopropanolamine, N-ethylmonoisopropanolamine, N-tert-butylmonoisopropanolamine, N-diethylisopropanolamine, N-N-butyldiisopropanolamine, N-tert-butyldiisopropanolamine, N-diethylethanolamine, N-di-N-butylethanolamine, N-di-N-butylisopropanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, N-isopropyldiethanolamine, N-dimethylmonoethanolamine, N-ethylmonoethanolamine, N-isopropylmonoethanolamine, N-ethylmonoethanolamine, N-, N-N-butyldiethanolamine, N-t-butyldiethanolamine, N- (. beta. -aminoethyl) monoethanolamine, N- (. beta. -aminoethyl) monoisopropanolamine, triethanolamine, triisopropanolamine, and the like, and at least one of these compounds may contain 2 or more, and from the viewpoint of improving durability, monoethanolamine, diethanolamine, N-methylmonoethanolamine, N-ethylmonoethanolamine, N-N-butylmonoethanolamine, N-t-butylmonoethanolamine, N-N-pentylmonoethanolamine, N-N-hexylmonoethanolamine, N-diethylethanolamine, N-di-N-butylethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, N-isopropyldiethanolamine, N- (β -aminoethyl) monoethanolamine, N- (. beta. -aminoethyl) monoisopropanolamine, triethanolamine, triisopropanolamine, and the like are preferable, N-N-butyldiethanolamine, N-tert-butyldiethanolamine, N- (. beta. -aminoethyl) monoethanolamine, more preferably monoethanolamine, diethanolamine, N-methylmethanolamine, N-ethylmonoethanolamine, N-N-butylmonoethanolamine, N-tert-butylmonoethanolamine, N-diethylethanolamine, n, N-di-N-butylethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, N-isopropyldiethanolamine, N-N-butyldiethanolamine, N-tert-butyldiethanolamine, and N- (. beta. -aminoethyl) monoethanolamine, with N-N-butyldiethanolamine and N-methylmethanolamine being more preferred, and N-methylmethanolamine being still more preferred.

The content of the component D at the time of cleaning of the detergent composition according to the present invention is 0.1 mass% or more and 10 mass% or less, and is 0.1 mass% or more, preferably 0.11 mass% or more, more preferably 0.12 mass% or more, further preferably 0.13 mass% or more, and further more preferably 0.15 mass% or more from the viewpoints of improvement in cleanability, improvement in durability, and suppression of corrosion of glass, and is 10 mass% or less, preferably 9 mass% or less, more preferably 7 mass% or less, further preferably 4 mass% or less, further more preferably 3 mass% or less, further more preferably 2 mass% or less, further more preferably 1 mass% or less, and further more preferably 0.5 mass% or less from the viewpoints of improvement in cleanability, improvement in durability, and suppression of corrosion of glass.

[ component E: water ]

The detergent composition according to the present invention contains water (component E). As the water as the component E, ion-exchanged water, RO water, distilled water, pure water, and ultrapure water can be used. The content of water can be appropriately set according to the manner of use of the detergent composition according to the present invention.

The content of the component E in the cleaning of the detergent composition according to the present invention is set as the remainder excluding the components a to D and any other components if the total content of the components a to E, the components F to G as needed, calcium, and any other components is set as 100% by mass.

[ component F: anionic surfactant ]

The detergent composition of the present invention may further contain an anionic surfactant (component F) as an optional component. The component F includes, for example, a carboxylate type anionic surfactant, a sulfate type anionic surfactant, a sulfonate type anionic surfactant, a phosphate type anionic surfactant, and the like, and from the viewpoint of improving the cleaning property and suppressing corrosion of glass, the sulfate type anionic surfactant and the sulfonate type anionic surfactant are preferable, and sodium lauryl sulfate, sodium tetradecyl sulfate, ammonium lauryl sulfate, and triethanolamine lauryl sulfate are more preferable; polyoxyethylene (3-10 mol) sodium lauryl ether sulfate, polyoxyethylene (3-10 mol) potassium lauryl ether sulfate, polyoxyethylene (3-10 mol) triethanolamine lauryl ether sulfate, polyoxyethylene (2-10mol) sodium alcohol ether sulfate with 12-13 carbon atoms, polyoxyethylene (20-25 mol) sodium oleyl ether sulfate, polyoxyethylene (2-10mol) sodium octyl phenyl ether sulfate and polyoxyethylene (4-18 mol) sodium nonyl phenyl ether sulfate; octyl sodium sulfonate, alpha-olefin sodium sulfonate with 10-18 carbon atoms, sodium dodecyl benzene sulfonate and sodium butyl naphthalene sulfonate; sodium di-2-ethylhexyl sulfosuccinate, sodium dioctyl sulfosuccinate, sodium diisotridecyl sulfosuccinate, sodium dicyclohexyl sulfosuccinate; sodium octyl diphenyl ether disulfonate and sodium dodecyl diphenyl ether disulfonate, more preferably polyoxyethylene (3 to 10mol) lauryl ether sulfate, alkylated diphenyl ether disulfonate or a salt thereof, still more preferably sodium polyoxyethylene (3 to 10mol) lauryl ether sulfate, potassium polyoxyethylene (3 to 10mol) lauryl ether sulfate, sodium octyl diphenyl ether disulfonate, potassium octyl diphenyl ether disulfonate, sodium dodecyl diphenyl ether disulfonate, potassium dodecyl diphenyl ether disulfonate, and further more preferably disodium dodecyl diphenyl ether disulfonate and dipotassium dodecyl diphenyl ether disulfonate. In the present invention, 1 or a mixture of 2 or more of the components F can be used.

The content of the component F in cleaning of the cleaner composition according to the present invention is preferably 1.5% by mass or more, more preferably 1.6% by mass or more, further preferably 1.7% by mass or more, further more preferably 1.8% by mass or more, from the viewpoint of improving cleaning performance, improving durability, and suppressing corrosion of glass, and is preferably 3.5% by mass or less, more preferably 3% by mass or less, further preferably 2% by mass or less, from the viewpoint of suppressing foaming.

[ component G: gluconic acid or salt thereof

The detergent composition according to the present invention may further contain gluconic acid or a salt thereof (component G) as an optional component. The component G includes, for example, gluconic acid, sodium gluconate, potassium gluconate, calcium gluconate, and magnesium gluconate, and from the viewpoint of improving the cleaning property and suppressing corrosion of glass, gluconic acid, sodium gluconate, potassium gluconate, and calcium gluconate are preferable, potassium gluconate and calcium gluconate are more preferable, and calcium gluconate is further preferable. In the present invention, 1 or 2 or more of the components G may be used in combination.

The content of the component G in cleaning of the detergent composition according to the present invention is preferably 0.4% by mass or more, more preferably 0.45% by mass or more, and even more preferably 0.5% by mass or more in terms of gluconic acid, from the viewpoint of suppressing corrosion of glass, improving cleaning performance, and improving durability, and is preferably 2% by mass or less, more preferably 1.5% by mass or less, and even more preferably 1% by mass or less from the viewpoint of reducing the load of wastewater treatment.

[ calcium concentration ]

The detergent composition according to the present invention may further contain calcium. Calcium may be contained in the form of a salt of a chelating compound such as calcium hydroxide or calcium gluconate, a salt of a weak acid such as calcium carbonate, or the like.

The content of calcium in the cleaning composition according to the present invention is preferably 0.04% by mass or more, more preferably 0.042% by mass or more, and further preferably 0.045% by mass or more from the viewpoint of suppressing corrosion of glass, and is preferably 0.11% by mass or less, more preferably 0.10% by mass or less, and further preferably 0.08% by mass or less from the viewpoint of suppressing precipitation of a water-insoluble calcium salt and productivity.

[ other optional ingredients ]

The detergent composition of the present invention may contain other optional components as necessary in addition to the components a to G and calcium. Examples of the other optional components include a compound having chelating ability such as an aminocarboxylate such as hydroxyethylglycine, hydroxyethyliminodiacetic acid, or ethylenediaminetetraacetic acid, a reducing agent, a preservative, a rust preventive, a bactericide, an antibacterial agent, a silicone defoaming agent, an antioxidant, an ester such as coconut fatty acid methyl ester or benzyl acetate, and an alcohol other than component a, which are generally used in a detergent composition. From the viewpoint of not impairing the effect of the present invention, the total content of other optional components in the cleaning composition according to the present invention is preferably 0% by mass or more and 2.0% by mass or less, more preferably 0% by mass or more and 1.5% by mass or less, further preferably 0% by mass or more and 1.3% by mass or less, and further more preferably 0% by mass or more and 1.0% by mass or less.

[ Process for producing detergent composition ]

The detergent composition of the present invention can be produced by blending the above components A to E, if necessary, the components F to G, calcium, and other optional components by a known method. For example, the detergent composition according to the present invention can be prepared by blending at least the components a to E. Accordingly, the present invention relates to a method for producing a detergent composition, which comprises a step of blending at least the above-mentioned components a to E. The term "blending" in the present invention includes mixing the components A to E, the components F to G if necessary, calcium and other optional components at the same time or in any order. In the method for producing the detergent composition according to the present invention, the amount of each component may be the same as the content of each component of the detergent composition according to the present invention.

The detergent composition of the present invention can be prepared as a concentrate in which the amount of water of the component E is reduced within a range that does not cause separation, precipitation, or the like to impair storage stability, or can be prepared as a kit as described below. From the viewpoint of transportation and storage, the concentrate of the detergent composition is preferably prepared as a concentrate having a dilution ratio of 2 times or more, and from the viewpoint of storage stability, the concentrate having a dilution ratio of 10 times or less. The concentrate of the detergent composition can be used by diluting the respective components with water at the time of use to the above-mentioned contents (i.e., the contents at the time of cleaning). In the present invention, "at the time of use" or "at the time of cleaning" of the concentrate of the detergent composition means a state in which the concentrate of the detergent composition is diluted.

[ Plastic lens Molding glass mold ]

In one or more embodiments, the cleaning composition of the present invention can be used for cleaning a mold for manufacturing a molded glass used for various optical plastic lenses such as lenses and prisms for optical instruments such as glasses, cameras, projection televisions, large screens, projectors, optical disk devices, and optical storage devices. The detergent composition of the present invention can be used for glass molds of various materials and shapes. As the glass mold, a conventionally known glass mold may be used as a glass mold used for molding a plastic lens base material. For example, the glass mold is preferably made of Na in glass by ion exchange⁺Is partially substituted by K⁺The chemically strengthened glass is formed by generating a compressive stress in the vicinity of the surface.

[ resin for Plastic lens ]

As the resin for plastic lenses used for optical instruments, for example, there can be used: allyl Diglycol Carbonate (ADC) resin obtained by radical polymerization of diethylene glycol bisallyl carbonate, polyurethane resin, sulfur-containing polyurethane resin, polymethyl methacrylate, styrene/methyl methacrylate copolymer, alpha-methylstyrene/methyl methacrylate copolymer, cyclohexyl methacrylate/methyl methacrylate copolymer, methacrylic resin such as aliphatic methacrylate/methyl methacrylate copolymer, acrylic resin such as triazine ring acrylic resin, polycarbonate resin, bromine-containing resin such as bisphenol derivative, olefin resin such as 4-methylpentene-1-fumarate/allyl monomer copolymer, styrene resin such as polystyrene and styrene/acrylonitrile copolymer, norbornene resin, acrylic resin, Thioether/ester resins, and the like.

In particular, as a resin used for a high refractive index plastic lens having a refractive index of 1.55 or more, a sulfur-containing urethane resin, a sulfur-containing epoxy resin, a polythio (meth) acrylate resin, a sulfur-containing poly (meth) acrylate resin, an episulfide resin, and the like can be used.

[ method of cleaning Plastic lens Molding glass mold ]

The present invention relates to a method for cleaning a plastic lens molding glass mold (hereinafter also referred to as "cleaning method according to the present invention"), which comprises a step of cleaning a plastic lens molding glass mold to which a resin for a plastic lens has adhered, by using the cleaning agent composition according to the present invention. As the plastic lens molding glass mold, the above-described glass mold can be used. The cleaning process, in one or more embodiments, may include a process of contacting the detergent composition according to the present invention with a plastic lens-forming glass mold. Examples of the method for cleaning a plastic lens-molding glass mold using the cleaning composition according to the present invention include: a method of contacting a glass mold with a detergent composition by immersing it in a cleaning bath; a method of contacting a glass mold with a cleaner composition in a bath of an ultrasonic cleaning device; a method of spraying the detergent composition to contact the glass mold; a method of spitting or spraying the detergent composition onto a rotating glass mold; a method of spraying the cleaning composition while applying ultrasonic waves thereto so as to bring the cleaning composition into contact with a glass mold; and a method of spraying a cleaning composition on a glass mold or a brush and wiping with a brush or the like.

When the detergent composition of the present invention is a concentrate, the cleaning method of the present invention may further include a dilution process of diluting the concentrate of the detergent composition. The cleaning method according to the present invention preferably comprises the steps of bringing a plastic lens-molding glass mold into contact with the detergent composition, rinsing with water, and drying. In the cleaning method of the present invention, the resin adhering to the surface and the edge of the plastic lens molding glass mold can be effectively removed.

One embodiment of the cleaning method according to the present invention includes the following steps 1 and 2.

Step 1: a production step of mixing a 1 st liquid containing the component A or containing the component A and the component E with a 2 nd liquid containing the component B and the component E, or mixing the 1 st liquid and the 2 nd liquid with the component E as a 3 rd liquid to produce the detergent composition;

and a step 2: and a step of cleaning the plastic lens molding glass mold to which the resin for a plastic lens has adhered, using the cleaning agent composition prepared in step 1.

In the preparation step, the following kit may be used, and the 1 st and 2 nd liquids may be prepared.

In the step 1, the component C and the component D are contained in either one or both of the 1 st liquid and the 2 nd liquid. The liquid 2 may further contain at least one of an anionic surfactant (component F) and gluconic acid or a salt thereof (component G).

In the cleaning method according to the present invention, from the viewpoint of easily exerting the cleaning power of the cleaning composition according to the present invention, it is preferable that ultrasonic waves are irradiated to the cleaning composition when the cleaning composition according to the present invention is brought into contact with a plastic lens-molding glass mold, and it is more preferable that the ultrasonic waves be relatively strong. From the same viewpoint, the irradiation conditions of the ultrasonic waves are preferably 20 to 2000kHz, more preferably 40 to 2000kHz, and still more preferably 40 to 1500 kHz.

[ method for producing Plastic lens ]

The present invention relates to a method for producing a plastic lens (hereinafter also referred to as "production method according to the present invention"), in one embodiment, the method comprises a step of cleaning a plastic lens-molding glass mold to which a resin for a plastic lens has adhered, by using the cleaning agent composition according to the present invention. As the plastic lens molding glass mold, the above-described glass mold can be used. The cleaning method and the cleaning conditions in the cleaning step of the method for producing a plastic lens according to the present invention may be the same as those in the cleaning step of the cleaning method according to the present invention. The method for producing a plastic lens according to the present invention may further include a step (step 1) of producing the detergent composition according to the present invention, which is performed in one embodiment of the cleaning method according to the present invention.

The method of manufacturing a plastic lens according to the present invention may include, for example: a molding step of molding a plastic lens base material using a plastic lens molding mold including a pair of glass molds disposed to face each other at a predetermined interval; a mold releasing step of releasing the glass mold from the plastic lens base material; and a cleaning step of cleaning the plastic lens molding glass mold to which the resin for a plastic lens has adhered, using the cleaning agent composition according to the present invention.

Fig. 1 shows a flowchart of an example of a method for manufacturing a plastic lens of the present invention. The flowchart shown in fig. 1 explains a method for manufacturing a plastic lens for spectacles, which is an example of the method for manufacturing a plastic lens according to the present invention.

As shown in fig. 1, one example of the method for manufacturing a plastic lens of the present invention includes: a molding step (S1) of molding the plastic lens base material, a mold release step (S2), a cleaning step (S3) of the glass mold, an outer periphery polishing step (S4) of the plastic lens base material, an annealing step (S6), an inner surface polishing step (S7) of the plastic lens base material, a dyeing step (S9), a hard coat layer forming step (S13), an antireflection layer forming step (S15), and an antifouling layer forming step (S16).

The inner surface polishing step (S7), the dyeing step (S9), the antireflection layer forming step (S15), and the antifouling layer forming step (S16) are not essential and may not be necessary. In the cleaning steps (S5, S8, S10, S12, and S14) of the plastic lens base material or the plastic lens, pure water or the like is generally used as the rinsing liquid.

First, in the molding step (S1), a pair of glass molds are arranged to face each other at a predetermined interval, and for example, a ring-shaped gasket is arranged between the pair of glass molds. Then, this state is held using a holding tool such as a clip. Thus, a plastic lens molding die having a cavity is formed by a pair of glass dies and a gasket.

Next, the polymerizable composition was injected into the cavity as a plastic lens base material. Next, the polymerizable composition is polymerized by, for example, thermal polymerization. The plastic lens base material obtained by polymerizing the polymerizable composition is preferably composed of at least one polymerizable resin selected from the group consisting of a sulfur-containing polyurethane resin, a sulfur-containing epoxy resin, a polythio (meth) acrylate resin, and an episulfide resin. When the plastic lens base material is composed of these resins, a plastic lens having a refractive index of, for example, 1.55 or more can be manufactured, and a thin plastic lens can be manufactured.

In the method for producing a plastic lens according to the present invention, by using the cleaning agent composition according to the present invention for cleaning a plastic lens-molding glass mold, it is possible to remove a resin adhering to the surface of the plastic lens-molding glass mold in contact with a plastic lens substrate or the edge of the glass mold, and to suppress occurrence of defects in the subsequent steps due to the resin residue, and therefore, it is possible to produce a high-quality plastic lens. Further, by performing the cleaning method according to the present invention, the frequency of maintenance for removing deposits, precipitates, and the like by stopping the cleaning apparatus can be reduced, and cleaning can be repeated for a long time, so that the efficiency of manufacturing the plastic lens can be improved.

[ set ]

The present invention relates to a kit for use in the cleaning method according to the present invention and/or the plastic lens manufacturing method according to the present invention, wherein at least one of the components a to E of the detergent composition according to the present invention is contained in a state of not being mixed with other components, and preferably, the components a and B which are difficult to be mixed with each other are contained in respective containers. If the compositions of the respective liquids constituting the kit are easily mixed with each other, a liquid having a relatively high concentration of the component can be easily prepared, and the storage efficiency can be improved. In use, the liquids making up the kit are mixed such that the components are in the above-mentioned amounts (i.e. the amounts at the time of cleaning).

One embodiment of the kit according to the present invention includes, for example, a kit (two-liquid type detergent composition) in which the component a (the 1 st liquid) and the solution (the 2 nd liquid) containing the components B to E are contained in an immiscible state and mixed at the time of use. If necessary, the component F, the component G, calcium, and any other component may be mixed in the first liquid 1 and the second liquid 2. The component E may be contained in the first liquid 1.

Another embodiment of the kit according to the present invention is, for example, a two-liquid type detergent composition containing a 1 st liquid containing the component a or the components a and E and a 2 nd liquid containing the components B and E in a state of being contained in respective containers, and mixing them at the time of use without mixing them with each other. The component C and the component D are contained in either or both of the first liquid 1 and the second liquid 2, and are preferably contained in the first liquid 1 from the viewpoint of facilitating concentration adjustment and addition and replenishment of a predetermined component. The kit may be a three-pack type detergent composition further containing a 3 rd liquid composed of the component E.

Another embodiment of the kit according to the present invention includes, for example, a kit including, in a state where they are not mixed with each other: a kit comprising a solution containing component A, component C, component D and component E (solution 1) and a solution containing component B and component E (solution 2), wherein the solution 1 and the solution 2 are mixed at the time of use, and if necessary, the above-mentioned component F, component G, calcium and an optional component may be mixed in the solution 1 and the solution 2, respectively. When the component F and the component G are contained in the detergent composition, it is preferable that both are contained in the 2 nd liquid from the viewpoint of improving storage efficiency and facilitating concentration adjustment. The kit may be a two-liquid type detergent composition composed of the 1 st liquid and the 2 nd liquid, or may be a three-liquid type detergent composition further containing the 3 rd liquid composed of the component E.

The invention also discloses a cleaning agent composition for plastic lens molding glass molds, a cleaning method for plastic lens molding glass molds using the cleaning agent composition, a manufacturing method for plastic lenses and the like.

[1] A cleaning composition for a plastic lens-forming glass mold, comprising:

an aromatic alcohol (component A) in an amount of 20 to 40 mass%;

an inorganic base (component B) in an amount of 2 to 8 mass%;

a compound (component C) represented by the following formula (I), the content of which is 4 to 8 mass%;

a compound (component D) represented by the following formula (II) in an amount of 0.1 to 10% by mass; and

water (component E) is added to the reaction mixture,

in the formula (I), R¹And R²Each independently represents a hydrogen atom, a phenyl group or an alkyl group having 1 to 6 carbon atoms, and n represents-CH₂CH₂The number of moles of O-added is an integer of 1 to 3.

In the formula (II), R³And R⁴Each independently represents a hydrogen atom, a hydroxyethyl group, a hydroxypropyl group, an aminoethyl group or an alkyl group having 1 to 6 carbon atoms, R⁵Is hydroxyethyl or hydroxypropyl.

[2] The detergent composition according to the above [1], further comprising an anionic surfactant (component F).

[3] The detergent composition according to item [2] above, wherein the content of the component F is preferably 1.5% by mass or more, more preferably 1.6% by mass or more, further preferably 1.7% by mass or more, further more preferably 1.8% by mass or more, and preferably 3.5% by mass or less, more preferably 3% by mass or less, further preferably 2% by mass or less.

[4] The detergent composition according to the above [2] or [3], wherein the component F is at least one selected from the group consisting of polyoxyethylene lauryl ether sulfate, alkylated diphenyl ether disulfonic acid, and salts thereof.

[5] The detergent composition according to any one of [1] to [4] above, further comprising gluconic acid or a salt thereof (component G).

[6] The detergent composition according to [5], wherein the content of the component G is preferably 0.4% by mass or more, more preferably 0.45% by mass or more, further preferably 0.5% by mass or more, and preferably 2% by mass or less, more preferably 1.5% by mass or less, further preferably 1% by mass or less in terms of gluconic acid.

[7] The detergent composition according to any one of the above [1] to [6], further comprising calcium.

[8] The detergent composition according to item [7] above, wherein the content of calcium is preferably 0.04% by mass or more, more preferably 0.042% by mass or more, further preferably 0.045% by mass or more, and preferably 0.11% by mass or less, more preferably 0.10% by mass or less, further preferably 0.08% by mass or less.

[9] The detergent composition according to any one of [1] to [8] above, wherein the number of carbon atoms of the component A is preferably 7 or more, and preferably 10 or less, more preferably 9 or less.

[10] The detergent composition according to any one of [1] to [9], wherein the component A is preferably at least one selected from the group consisting of benzyl alcohol, phenethyl alcohol, 4-methylbenzyl alcohol, 4-ethylbenzyl alcohol, 2-phenyl-1-propanol, and 2-phenyl-2-propanol, more preferably at least one selected from the group consisting of benzyl alcohol, phenethyl alcohol, and 4-ethylbenzyl alcohol, and further preferably benzyl alcohol.

[11] The detergent composition according to any one of [1] to [10] above, wherein the content of the component A is preferably 22% by mass or more, more preferably 25% by mass or more, further preferably 27% by mass or more, and preferably 38% by mass or less, more preferably 35% by mass or less, further preferably 32% by mass or less.

[12] The detergent composition according to any one of [1] to [11], wherein the component B is preferably at least one selected from ammonia, an alkali metal hydroxide, and an alkali metal weak acid salt, more preferably at least one selected from sodium hydroxide and potassium hydroxide, and further preferably potassium hydroxide.

[13] The detergent composition according to any one of [1] to [12] above, wherein the content of the component B is preferably 2.1% by mass or more, more preferably 2.2% by mass or more, further preferably 2.3% by mass or more, and is preferably 7.5% by mass or less, more preferably 7% by mass or less, further preferably 6% by mass or less, further more preferably 5% by mass or less, further more preferably 4% by mass or less, further more preferably 3.5% by mass or less, further more preferably 3.3% by mass or less.

[14] The detergent composition according to any one of [1] to [13], wherein the component C preferably contains all of the compound represented by the following formula (III), the compound represented by the following formula (IV), and the compound represented by the following formula (V).

Wherein in the formulae (III), (IV), (V), n is the same as n in the formula (I) and may be different in the formulae (III), (IV), (V), respectively, R⁶An alkyl group having 1 to 6 carbon atoms.

[15] The detergent composition according to [14], wherein the compound represented by the formula (III) is preferably at least one compound selected from the group consisting of phenyl diethylene glycol and phenyl triethylene glycol, and more preferably phenyl diethylene glycol.

[16] The detergent composition according to [14], wherein the compound represented by the formula (IV) is preferably at least one compound selected from the group consisting of isopropyl glycol, isopropyl diglycol, isopropyl triglycol, n-butyl glycol, n-butyl diglycol, n-butyl triglycol, isobutyl glycol, isobutyl diglycol, tert-butyl glycol, tert-butyl diglycol, tert-butyl triglycol, n-hexyl glycol, n-hexyl diglycol and n-hexyl triglycol, more preferably at least one compound selected from the group consisting of isopropyl diglycol, isopropyl triglycol, n-butyl diglycol, n-butyl triglycol, isobutyl diglycol, isobutyl triglycol, n-hexyl diglycol and n-hexyl triglycol, and still more preferably n-hexyl diglycol.

[17] The detergent composition according to [14], wherein the compound represented by the formula (V) is preferably at least one selected from diethylene glycol and triethylene glycol, and more preferably triethylene glycol.

[18] The detergent composition according to any one of [1] to [17] above, wherein the component C contains all of phenyl diethylene glycol, n-hexyl diethylene glycol, and triethylene glycol.

[19] The detergent composition according to any one of [1] to [18] above, wherein the content of the component C is preferably 4.5% by mass or more, more preferably 5% by mass or more, further preferably 5.5% by mass or more, and preferably 7.5% by mass or less, more preferably 7% by mass or less, further preferably 6.5% by mass or less.

[20] The detergent composition according to any one of the above [1] to [19], wherein the component D is preferably at least one selected from the group consisting of monoethanolamine, diethanolamine, N-methylmonoethanolamine, N-ethylmonoethanolamine, N-N-butylmonoethanolamine, N-tert-butylmonoethanolamine, N-N-pentylmonoethanolamine, N-N-hexylmonoethanolamine, N-diethylethanolamine, N-di-N-butylethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, N-isopropyldiethanolamine, N-N-butyldiethanolamine, N-tert-butyldiethanolamine and N- (β -aminoethyl) monoethanolamine, more preferably at least one selected from the group consisting of monoethanolamine, diethanolamine, N-methylmonoethanolamine, N-methylmethanolamine, and N- (β -aminoethyl) monoethanolamine, At least one member selected from the group consisting of N-ethylmonoethanolamine, N-N-butylmonoethanolamine, N-tert-butylmonoethanolamine, N-diethylethanolamine, N-di-N-butylethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, N-isopropyldiethanolamine, N-N-butyldiethanolamine, N-tert-butyldiethanolamine and N- (. beta. -aminoethyl) monoethanolamine, more preferably at least one member selected from the group consisting of N-N-butyldiethanolamine and N-methylmethanolamine, and still more preferably N-methylmethanolamine.

[21] The detergent composition according to any one of [1] to [20] above, wherein the content of the component D is preferably 0.11% by mass or more, more preferably 0.12% by mass or more, further preferably 0.13% by mass or more, further more preferably 0.15% by mass or more, and preferably 9% by mass or less, more preferably 7% by mass or less, further preferably 4% by mass or less, further more preferably 3% by mass or less, further more preferably 2% by mass or less, further more preferably 1% by mass or less, further more preferably 0.5% by mass or less.

[22] The detergent composition according to any one of the above [1] to [21], wherein the detergent composition comprises:

a first liquid 1 containing the component A or the component A and the component E and stored in a container; and

a 2 nd liquid containing the component B and the component E and stored in a container different from the 1 st liquid,

the component C and the component D are contained in either or both of the 1 st liquid and the 2 nd liquid, respectively.

[23] The detergent composition according to [22] above, wherein the component C and the component D are contained only in the first liquid 1.

[24] The detergent composition according to [22] or [23], wherein the 2 nd liquid further contains an anionic surfactant (component F) and at least one of gluconic acid or a salt thereof (component G).

[25] A method of cleaning a plastic lens-forming glass mold, comprising: a step of cleaning a plastic lens-molding glass mold to which a resin for a plastic lens has adhered, using the cleaning agent composition according to any one of [1] to [24 ].

[26] The cleaning method according to item [25] above, wherein a preparation step of preparing the cleaning agent composition is included before the step of cleaning the plastic lens molding glass mold to which the resin for a plastic lens has adhered,

in the above-mentioned preparation process, the step of,

preparing the detergent composition by mixing a 1 st liquid containing the component A or containing the component A and the component E with a 2 nd liquid containing the component B and the component E, or mixing the 1 st and the 2 nd liquids with the component E as a 3 rd liquid,

the component C and the component D are each contained in either one or both of the 1 st liquid and the 2 nd liquid.

[27] The cleaning method according to [26] above, wherein the component C and the component D are contained only in the first liquid 1.

[28] The cleaning method according to the above [26] or [27], wherein the 2 nd liquid further contains an anionic surfactant (component F) and at least one of gluconic acid or a salt thereof (component G).

[29] The cleaning method according to any one of the above [25] to [28], wherein the resin for a plastic lens is a resin for a high refractive index plastic lens having a refractive index of 1.55 or more.

[30] A method for producing a plastic lens, comprising a step of cleaning a plastic lens-molding glass mold to which a resin for a plastic lens has adhered, using the cleaning agent composition according to any one of [1] to [24 ].

[31] A method for manufacturing a plastic lens, wherein the manufacturing process comprises the cleaning method according to any one of the above items [25] to [28 ].

[32] Use of the detergent composition according to any one of [1] to [24] above in a step of cleaning a plastic lens molding glass mold to which a resin for a plastic lens has adhered in a method for producing a plastic lens.

[33] Use of the detergent composition according to any one of the above [1] to [24] for cleaning a glass mold for plastic lens molding.

[34] Use of the detergent composition according to any one of the above [1] to [24] for peeling a resin for a plastic lens from a glass mold to which the resin for a plastic lens is adhered.

Examples

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

1. Preparation of detergent compositions (examples 1 to 13 and comparative examples 1 to 14)

The respective components were weighed so as to be the contents shown in tables 1 and 2 in a 300mL glass beaker, and mixed under the following conditions, thereby preparing the detergent compositions of examples 1 to 13 and comparative examples 1 to 14. The numerical units of the respective components in tables 1 and 2 are% by mass and represent the effective components unless otherwise specified.

Liquid temperature: 25 deg.C

A stirrer: magnetic force mixer (50mm rotor)

Rotation speed: 300rpm

Stirring time: 10 minutes

The detergent compositions of examples 1 to 4 were prepared by preparing the liquid 1 and the liquid 2 described in table 3, and then mixing the liquid 1 and the liquid 2 at the following mass ratio.

Example 1 the 1 st liquid (1-1)/2 nd liquid (2-1) is 3/7

Example 2 liquid 1 (1-2)/liquid 2 (2-1) 4/6

Example 3 the 1 st liquid (1-1)/2 nd liquid (2-1) is 5/5

Example 4 the 1 st liquid (1-2)/2 nd liquid (2-3) is 4/6

< ingredient a: aromatic alcohol >

Benzyl alcohol (LANXESS K.K. manufacturing)

< ingredient B: inorganic base >

Potassium hydroxide (Special grade deer, manufactured by Kanto chemical Co., Ltd., solid content 48% by mass)

< ingredient C: a compound represented by the formula (I) >

Phenyl diethylene glycol (manufactured by Nippon emulsifier Co., Ltd.)

N-hexyldiglycol (Hexyldiglycol manufactured by Nippon emulsifier Co., Ltd.)

Triethylene glycol (manufactured by Tokyo chemical industry Co., Ltd.)

< comparative object of component C >

2-ethylhexyl tetraethyleneglycol (Blaunon EH-4, Qingmu oil & fat Co., Ltd.)

Pentaethylene glycol (manufactured by Tokyo chemical industry Co., Ltd.)

< ingredient D: a compound represented by the formula (II) >

N-Methylmonoethanolamine (produced by Nippon emulsifier Co., Ltd., Amino Alcohol MMA)

N-N-butyldiethanolamine (produced by Nippon emulsifier Co., Ltd., Amino Alcohol MBD)

< comparative object of component D >

Triethylamine (manufactured by Tokyo chemical industry Co., Ltd.)

< ingredient E: water >

Pure water of 1. mu.S/cm or less manufactured by pure water device G-10DSTSET manufactured by Organo Corporation

< ingredient F: anionic surfactant >

Disodium dodecyldiphenyl ether disulfonate was prepared according to the following [ production example 1 ].

Production example 1

204.3g (1.2mol) of diphenyl ether and 8.0g (0.06mol) of anhydrous aluminum chloride powder were charged in a 1 liter four-necked flask, and the temperature was raised to 90 ℃ with sufficient stirring. Next, 168.3g (1mol) of 1-dodecene was added dropwise under a nitrogen atmosphere for 1 hour, and then the mixture was further reacted at 60 ℃ for 1 hour. After the reaction was completed, the reaction mixture was washed with water in the same amount and four times, and then excessive low boiling components such as diphenyl ether were distilled off. 33.9g (0.1mol) of the obtained dodecyldiphenyl ether was put into another 1 liter four-necked flask, and 678g (20 times the amount of) 1, 2-dichloroethane was further added thereto, and the temperature was lowered to 5 ℃ with stirring. Then, under a nitrogen atmosphere, liquid SO was added dropwise₃18.4g (0.23mol) of (D) for 1 hour, while gradually reversingShould be used. 1, 2-dichloroethane was distilled off from the reaction by means of a rotary evaporator to give dodecyldiphenyl ether sulfonic acid. The obtained dodecyldiphenyl ether sulfonic acid was neutralized with sodium hydroxide to obtain a 40 mass% aqueous solution of dodecyldiphenyl ether disulfonic acid disodium salt.

Triethylene glycol lauryl ether sulfate sodium salt (EMAL 20C (25% by mass aqueous solution), produced by Kao corporation)

< ingredient G: gluconic acid or salt thereof >

Calcium gluconate (Fusang chemical industry Co., Ltd.)

Potassium gluconate (HELSHAS K, Hibiscus chemical Co., Ltd.)

2. Evaluation of detergent composition

The following evaluations were carried out using the detergent compositions of examples 1 to 13 and comparative examples 1 to 14 thus prepared.

[ method for producing test piece 1]

A plastic lens resin (MR-8 resin, available from Mitsui chemical Co., Ltd., sulfur-containing polyurethane resin, refractive index of 1.60) was dropped onto 10 spots of a glass slide (trade name S1112, available from Sonlang Nitz industries, Ltd.) made of borosilicate glass of 1mm × 76.0mm × 26.0mm so that the diameter of each spot was about 5mm, and polymerization was carried out by heating at 30 ℃ for 6 hours, at 40 ℃ for 7 hours, at 50 ℃ for 3 hours, at 60 ℃ for 2 hours, at 100 ℃ for 3 hours, and at 120 ℃ for 3 hours in total for 24 hours, thereby fixing the resin on the glass slide and producing a cleaning test piece 1 in which 10 plastic lens resins were adhered to each 1 piece.

[ method of deterioration of detergent composition ]

In order to evaluate the durability of the detergent composition, the detergent composition was deteriorated by the following method using the following detergent circulation device.

The detergent circulation device includes: a10 cm-side stainless steel container (cleaning tank) having a discharge port A at a position 5cm from the bottom of the side wall and a 20 cm-side stainless steel container (circulation tank) having a discharge port B at the lowest part of the side wall were arranged in this order from top to bottom. Since the cleaning agent circulation device includes the pipe a for allowing the cleaning agent composition to flow from the cleaning tank into the circulation tank by natural falling and the pipe B for drawing the cleaning agent composition from the circulation tank having the screw pump in the middle to the cleaning tank, the cleaning agent composition in the cleaning agent circulation device can be continuously circulated by the operation of the screw pump, and the water level of the cleaning tank is maintained at a position of 5cm from the bottom. The pipe a has one end fixed to the discharge port a and the other end provided at a position where the detergent composition can flow into the circulation tank through the opening. The pipe B has one end fixed to the discharge port B and the other end disposed at a position where the detergent composition can flow into the cleaning tank from the opening, and the screw pump is disposed in the pipe B in the vicinity of the discharge port B. A heater for adjusting the temperature of the detergent composition is disposed in the circulation tank.

6000g of the detergent composition was prepared in the detergent circulation device, and the detergent composition was deteriorated by circulating the detergent composition in a circulation tank at a circulation flow rate of 3L/min while replenishing evaporated water for 7 days while maintaining the temperature of the detergent composition at 60 ℃.

[ cleaning method ]

300g of each of the detergent compositions was put into a 300mL glass beaker, and the test piece 1 was cleaned for 100 seconds at 39kHz and 200W using an ultrasonic cleaning apparatus (trade name: SILENTSONIC UT-204, manufactured by Charpy corporation) while maintaining the temperature at 60 ℃. Next, the test piece 1 was immersed in ion-exchanged water at 30 ℃ and rinsed for 50 seconds (first rinsing) at 39kHz and 200W using the ultrasonic cleaning apparatus described above. Further, similarly, the plate was immersed in ion-exchanged water at 30 ℃ and rinsed (second rinsing) with the ultrasonic cleaning apparatus at 39kHz and 200W for 50 seconds. Then, the mixture was blown for 50 seconds and dried at 80 ℃ for 10 minutes by a blow-dryer (trade name: FV-630, manufactured by Toyoyo Co., Ltd.).

< evaluation of cleanability >

The test pieces 1 were cleaned by the above-mentioned cleaning method for 10 pieces each using each of the detergent compositions before and after the deterioration, and the number of the plastic lens resin remaining on the test pieces was counted. The number of the particles is 100 if the particles are completely impossible to clean, 0 if the particles are completely removable, and the smaller the number of the particles remaining, the more excellent the cleaning property. The results using the detergent composition before deterioration are shown in "cleaning property 1" in tables 1 and 2, and the results using the detergent composition after deterioration are shown in "cleaning property 2" in tables 1 and 2.

[ method for producing test piece 2]

A glass slide (trade name: S1112, manufactured by Sonlang Nitri Kogyo Co., Ltd.) made of borosilicate glass having a thickness of 1mm × 76.0mm × 26.0mm was immersed in a molten potassium nitrate salt maintained at 400 to 410 ℃ for 24 hours. Then, the mixture was slowly cooled to room temperature, and potassium nitrate was washed off with running water. The water was thoroughly drained and air-dried to prepare a test piece 2 as a chemically strengthened glass for glass corrosion test.

[ method of Corrosion test ]

Test piece 2 and 100g of each detergent composition were placed in a 100mL polyethylene container and allowed to stand at 80 ℃ for 24 hours. The test piece taken out of the detergent composition was thoroughly washed with clean ion-exchanged water, blown for 1 minute, and dried at 80 ℃ for 10 minutes by a constant temperature drier (product name: FV-630, manufactured by Toyoyo Co., Ltd.).

< evaluation of Corrosion Property >

The mass of the test piece before and after the test was measured, and the mass% decreased by corrosion was calculated using the following formula.

Decrement (% by mass) — (test piece mass before test-test piece mass after test) ÷ test piece mass before test × 100

As shown in tables 1 and 2, when the cleaner compositions of examples 1 to 13 were used, corrosion inhibition of the surface of the glass mold, high cleaning property, and high durability were simultaneously achieved as compared with the cleaner compositions of comparative examples 1 to 14.

[ Table 3]

Industrial applicability of the invention

The cleaning composition of the present invention combines the corrosion inhibition of the surface of a glass mold, high cleaning properties and high durability, and therefore, not only can a high-quality plastic lens be provided, but also the number of times of refreshing the cleaning composition can be reduced, and the cleaning composition can be used repeatedly for molding a glass mold for a plastic lens, and is useful as a cleaning composition for a glass mold.

Claims

1. A detergent composition for a glass mold for molding a plastic lens, wherein,

comprises the following components:

an aromatic alcohol as component A, the content of which is 20 to 40 mass%;

an inorganic base as component B, the content of which is 2 to 8 mass%;

a compound represented by the following formula (I) as a component C, the content of which is 4 to 8 mass%;

a compound represented by the following formula (II) as a component D, the content of which is 0.1 to 10 mass%; and

water is used as the component E, and the component E,

in the formula (I), R¹And R²Each independently represents a hydrogen atom, a phenyl group or an alkyl group having 1 to 6 carbon atoms, and n represents-CH₂CH₂The number of moles of O-added is an integer of 1 to 3 inclusive,

2. The detergent composition of claim 1,

an anionic surfactant is also contained as the component F.

3. The detergent composition of claim 1,

further contains gluconic acid or a salt thereof as the component G.

4. A detergent composition according to any one of claims 1 to 3,

also contains calcium.

5. A detergent composition according to any one of claims 1 to 3,

the component A is a compound having an aromatic ring and a hydroxyl group, and the number of carbon atoms of the component A is 7 to 10 inclusive.

6. A detergent composition according to any one of claims 1 to 3,

component A is benzyl alcohol.

7. A detergent composition according to any one of claims 1 to 3,

the component B is at least one selected from sodium hydroxide and potassium hydroxide.

8. A detergent composition according to any one of claims 1 to 3,

the component C contains all of the compound represented by the following formula (III), the compound represented by the following formula (IV) and the compound represented by the following formula (V),

in the formulae (III), (IV), (V), n is the same as n in the formula (I), and R is the same or different in the formulae (III), (IV) and (V), respectively⁶An alkyl group having 1 to 6 carbon atoms.

9. The detergent composition according to claim 2 or 3,

the component F is at least one selected from polyoxyethylene lauryl ether sulfate, alkylated diphenyl ether disulfonic acid, and salts thereof.

10. A detergent composition according to any one of claims 1 to 3,

the detergent composition includes:

a 1 st liquid containing the component a or containing the component a and the component E and stored in a container; and

a liquid 2 containing a component B and a component E and stored in a container different from the liquid 1,

11. The detergent composition of claim 10,

the component C and the component D are contained only in the first liquid 1.

12. The detergent composition of claim 10,

the second liquid 2 further contains at least one of a component F and a component G, wherein the component F is an anionic surfactant, and the component G is gluconic acid or a salt thereof.

13. A detergent composition according to any one of claims 1 to 3,

the content of component A is 22 to 35 mass%.

14. A detergent composition according to any one of claims 1 to 3,

the content of component B is 2.2 to 5 mass%.

15. A detergent composition according to any one of claims 1 to 3,

the content of component C is 4 to 7.5 mass%.

16. A detergent composition according to any one of claims 1 to 3,

the content of component D is 0.11 to 9 mass%.

17. The detergent composition of claim 2,

the content of component F is 1.5 to 3.5 mass%.

18. The detergent composition of claim 3,

the content of the component G is 0.4 to 2 mass% in terms of gluconic acid.

19. A method for cleaning a glass mold for molding a plastic lens,

the method comprises the following steps: a step of cleaning a plastic lens-molding glass mold to which a resin for a plastic lens has adhered, using the cleaning agent composition according to any one of claims 1 to 18.

20. The cleaning method according to claim 19,

a step of preparing the cleaning agent composition prior to the step of cleaning the plastic lens molding glass mold to which the resin for a plastic lens is attached,

in the above-mentioned preparation process, the step of,

21. The cleaning method according to claim 20,

the component C and the component D are contained only in the first liquid 1.

22. The cleaning method according to claim 20 or 21,

23. The cleaning method according to any one of claims 19 to 21,

the resin for plastic lenses is a resin for high refractive index plastic lenses having a refractive index of 1.55 or more.

24. The cleaning method according to claim 23,

the resin for plastic lenses is a resin selected from the group consisting of sulfur-containing polyurethane resins, sulfur-containing epoxy resins, polythio (meth) acrylate resins, sulfur-containing poly (meth) acrylate resins, and episulfide resins.

25. The cleaning method according to any one of claims 19 to 21,

the plastic lens isThe glass mold is prepared by ion exchange of Na in glass⁺Is partially substituted by K⁺And chemically strengthening the glass by causing compressive stress to be generated in the vicinity of the surface.

26. The cleaning method according to any one of claims 19 to 21,

the step of cleaning the plastic lens-molding glass mold includes the steps of bringing the plastic lens-molding glass mold into contact with a detergent composition, rinsing with water, and drying.

27. A method of manufacturing a plastic lens, wherein,

the method comprises the following steps: a step of cleaning a plastic lens molding glass mold to which a resin for a plastic lens has adhered, using the cleaning agent composition according to any one of claims 1 to 18.

28. A method of manufacturing a plastic lens, wherein,

the production process includes the cleaning method according to any one of claims 19 to 26.

29. Use of the detergent composition according to any one of claims 1 to 18 for cleaning a glass mold for plastic lens molding.

30. Use of the detergent composition according to any one of claims 1 to 18 for peeling a resin for a plastic lens from a glass mold to which the resin for a plastic lens is attached.