JPH11152496A - Cleaning of glass mold for molding plastic lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for cleaning a glass mold for molding plastic lens by which the glass mold is cleaned without corroding the glass mold with excellent detergency to resinous dirt and safety to a human body. SOLUTION: The glass mold for molding plastic lens is washed with an aromatic detergent comprising >=50 wt.% of an aromatic compound of the formula [R<1> is H or a 1-4C hydrocarbon; X is O, oxymethylene group, carbonyl group or (CH2 )1-2 group; Y is OH group, a 1-7C hydrocarbon group or (R<2> O)1-3 H group (R<2> is a 2-3C alkylene group)] and <=20 wt.% of water, or the aromatic detergent comprising >=50 wt.% of an aromatic compound and 0.005-25 wt.% on a calcium ion-releasing material (expressed in terms of calcium ion), and the washed glass mold is further washed with an alkaline detergent comprising 0.5-50 wt.% of an alkaline agent and 0.005-25 wt.% of a calcium-releasing material (expressed in terms of calcium ion), and the resultant glass mold is rinsed with water in the method for cleaning the glass mold.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to a method for cleaning a plastic lens molded glass mold. For more information,
Plastic lens molding Raw materials for plastic lens molding attached to glass molds, unreacted monomers, oligomers, polymers, components bleed out from gaskets, plasticizers, adhesives, high molecular weight resinous forms such as adhesives derived from mold fixing tapes The present invention relates to a cleaning method for cleaning dirt and the like.

[0001]

2. Description of the Related Art In recent years, lenses for glasses, contact lenses, viewfinders for cameras, lenses for photography, lenses for projection televisions, Fresnel lenses for large screens, lenticulars, lenses for condensing sunlight, overhead projector type Fresnel lenses, compact Conversion of glass materials to plastic materials for lenses and prisms for optical devices such as lenses for disks and objective lenses for optical memories is progressing. In particular, lenses for glasses prevent scratches on the surface (hard)
With the development of coating technology and the abrasion resistance at a level that does not pose a practical problem, the development of materials with a high refractive index, and the ability to process thinner and lighter lenses, the conversion of glass to plastic The conversion ratio has increased significantly.

As resins for optical plastic lenses, for example, allyl diglycol carbonate (ADC) resin obtained by radical polymerization of diethylene glycol bisallyl carbonate, urethane resin, sulfur-containing urethane resin, polymethyl methacrylate, styrene/
Methacrylic resins such as methyl methacrylate copolymer, α-methylstyrene / methyl methacrylate copolymer, cyclohexyl methacrylate / methyl methacrylate copolymer, aliphatic methacrylate / methyl methacrylate copolymer, and triazine ring acrylic Acrylic resins such as resins, polycarbonate resins, bromine-containing resins such as bisphenol derivatives, poly (4-methylpentene-1),
An olefin resin such as a fumarate / allyl monomer copolymer, a styrene resin such as polystyrene and a styrene / acrylonitrile copolymer, a norbornene resin, and a thioether / ester resin are used.

[0003] As a method of manufacturing an optical plastic lens, for example, in the case of a plastic lens for eyeglasses, the plastic lens body is molded using a molded glass mold as a mold, the outer periphery is shaped, and the edge portion is chamfered. Go and be washed.

At this time, the used molded glass mold is washed, and the washed molded glass mold is used again as a mold. In the case of plastic lenses for eyeglasses, the number of types of lenses is as large as several thousand types, and the production of many types and small quantities is required. Therefore, the required number of molded glass molds is enormous. Therefore, since a glass mold under one condition can produce many plastic lenses with one set of molds, an increase in the number of times that it can be used means that the ratio of the cost of the molded glass mold to the production of the plastic lens decreases. As a result, a plastic lens can be manufactured at low cost.

On the other hand, the molded glass mold after releasing the plastic lens contains plastic lens molding raw materials, unreacted monomers, oligomers, polymers, components bleed out from gaskets, plasticizers, adhesives, and mold fixing tapes. In addition to high-molecular-weight resinous dirt such as pressure-sensitive adhesives, dust in the atmosphere, and fingerprints of workers are attached. If such dirt adheres to the glass mold, a high-quality plastic lens with a smooth surface cannot be obtained, or if the dirt accumulates on the glass mold, the obtained plastic lens may be damaged or damaged. Because of this, the glass mold can no longer be used,
Sometimes they have to be discarded.

Among the above-mentioned stains, high molecular weight resinous stains such as oligomers, polymers, components bleed out from gaskets, adhesives, and adhesives from mold fixing tapes derived from raw materials for plastic lens molding are used as glass molds. Is strongly adhered (adhered) to the hard surface, and the resinous dirt itself has a high molecular weight, so that it is very difficult to wash with a chemical utilizing dissolution, swelling, softening, disintegration, peeling action and the like.

Conventionally, as a method of cleaning resinous stains such as oligomers and polymers adhered to a molded glass mold used in the production of plastic lenses, a detergent containing methylene chloride and a hydrophobic surfactant is used. And further washing with methylene chloride.
Japanese Patent Application Laid-Open No. Sho 62-179600) and a method of washing with a detergent containing methylene chloride and an aqueous alkaline detergent and further washing with methylene chloride.
No. 1).

However, all of these cleaning methods have a low detergency, so that the degree of polymerization is particularly high, and large lump-shaped stains have the disadvantage that a step of manually removing them later is required. Since methylene chloride, which is said to have cancer properties, is used, development of a method that does not use methylene chloride has been awaited.

In recent years, as a cleaning method using a cleaning agent for a plastic lens molded glass mold, for example, a cleaning method using a cleaning agent containing a specific glycol diether (Japanese Patent Application Laid-Open No. 8-224740), Washing with a detergent containing a water-soluble amide compound or a water-soluble lactone compound, an alkanolamine or a quaternary ammonium hydroxide compound, an aromatic hydrocarbon, and water (JP-A-9-3486). Gazette) is known.

[0010] However, since the main cleaning mechanism of these cleaning methods is to dissolve and clean the resinous dirt, it takes a long time to dissolve when the molecular weight of the resinous dirt is large. is there.

In addition to the above-described cleaning method, a method of cleaning using an alkaline cleaning agent whose main cleaning mechanism is to remove adhered dirt is to use an inorganic alkali contained in the cleaning agent. When the amount is small, the cleaning power is insufficient, it takes a long time to completely remove the dirt, or it is necessary to remove the dirt manually. When the amount of the inorganic alkali is increased in order to provide sufficient detergency, corrosion such as so-called latent damage or burning occurs on the surface of the molded glass mold. When corrosion occurs on the glass surface in this way, a high-quality plastic lens with a smooth surface cannot be obtained, and the polishing and surface strengthening treatment must be performed again.In some cases, the molded glass mold is discarded. There is a problem that it becomes unavoidable, and as a result, it becomes very uneconomical.

Therefore, as a cleaning method using a glass cleaning agent that hardly damages the glass surface, for example, a cleaning agent containing a quaternary ammonium hydroxide compound, a nonionic surfactant, and an alkanolamine is used. (Japanese Patent Application Laid-Open No. 5-271699) and a cleaning method using a cleaning agent containing water glass as a builder (Japanese Patent Application Laid-Open No. 9-71799) have been proposed. However, according to these cleaning methods, although slightly effective, there is a drawback that surface roughness occurs during repeated use of the molded glass mold.

A cleaning method using a cleaning agent containing an inorganic alkali base and a calcium ion-releasing substance or a calcium complex has been proposed (JP-A-61-1).
No. 57595). However, such a cleaning agent has a drawback that cleaning properties against high molecular weight resinous dirt are insufficient.

[0014]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned prior art, and has excellent cleaning properties against high-molecular-weight resinous dirt and safety against the human body at the time of cleaning. An object of the present invention is to provide a method for cleaning a plastic lens molded glass mold that can be cleaned without causing the cleaning.

[0015]

That is, the gist of the present invention is as follows.
(1) (A) A plastic lens molded glass mold is represented by the general formula (I):

Embedded image (Wherein, R ¹ is a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms, X is an oxygen atom, an oxymethylene group, a carbonyl group, or a — (CH ₂ ) _k — group [k represents 1 or 2], Y
Is a hydroxyl group, a hydrocarbon group having 1 to 7 carbon atoms or-(R
² O) _j H group [R ² represents an alkylene group having 2 or 3 carbon atoms, j is an integer of 1-8] containing less aromatics 50 wt% or more and 20% by weight of water represented by showing a) Containing at least 50% by weight of the aromatic detergent (a) or the aromatic compound represented by the general formula (I) and 0.005 to 25% by weight (calculated in terms of calcium ions) of a calcium ion-releasing substance. (B) The washed molded glass mold is washed with an alkaline agent 0.5 to 50% by weight and a calcium releasing substance 0.005 to 25% by weight (calculated in terms of calcium ions). And (C) rinsing the washed molded glass mold with rinsing water.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION As described above, the cleaning method of the present invention uses (A) a plastic lens-molded glass mold according to the general formula (I):

Embedded image (Wherein, R ¹ is a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms, X is an oxygen atom, an oxymethylene group, a carbonyl group, or a — (CH ₂ ) _k — group [k represents 1 or 2], Y
Is a hydroxyl group, a hydrocarbon group having 1 to 7 carbon atoms or-(R
² O) _j H group [R ² represents an alkylene group having 2 or 3 carbon atoms, j is an integer of 1-8] containing less aromatics 50 wt% or more and 20% by weight of water represented by showing a) Containing at least 50% by weight of the aromatic detergent (a) or the aromatic compound represented by the general formula (I) and 0.005 to 25% by weight (calculated in terms of calcium ions) of a calcium ion-releasing substance. (B) The washed molded glass mold is washed with an alkaline agent 0.5 to 50% by weight and a calcium releasing substance 0.005 to 25% by weight (calculated in terms of calcium ions). And (C) rinsing the washed molded glass mold with rinsing water.

The step (A) is a step of cleaning the plastic lens molded glass mold using the aromatic cleaning agent (a) or the aromatic cleaning agent (b).

In the present invention, an aromatic detergent (a) containing 50% by weight or more of the aromatic compound and 20% by weight or less of water or 50% by weight or more of the aromatic compound and 0.005% of a calcium ion releasing substance. ~ 25% by weight
The use of the aromatic detergent (b) containing [calcium ion equivalent] has one major feature. By using the aromatic detergent (a) or (b), the solubility of various stains adhered to the plastic lens molding glass mold, the permeability to various resinous stains, and the removal of resinous stains Since the swelling property is enhanced, excellent detergency is exhibited. Further, by combining the washing step (B) using an alkaline detergent after the step (A), the resin stain swollen in the step (A) can be disintegrated, and the washing effect is synergistically enhanced. be able to. Note that this high cleaning effect is achieved in the cleaning sequence of steps (A) and (B).

The aromatic detergent (a) is, as described above, an aromatic compound 50 represented by the general formula (I).
% By weight and 20% by weight or less of water.

The use of the aromatic compound in the aromatic detergent (a) has one major feature. By using the aromatic compound, solubility of various stains attached to the plastic lens molded glass mold,
Since the permeability to various resinous soils and the swelling of the resinous soils are enhanced, excellent cleaning properties are exhibited.

In the general formula (I), R ¹ is a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms.

The hydrocarbon group having 1 to 4 carbon atoms includes:
For example, a linear saturated hydrocarbon group represented by a methyl group, an ethyl group, a propyl group and a butyl group; an isopropyl group;
Branched saturated hydrocarbon groups such as isobutyl group, sec-butyl group and tert-butyl group; linear unsaturated hydrocarbon groups such as vinyl group, allyl group and butenyl group; branched chains such as isopropenyl group Unsaturated hydrocarbon groups; cyclic saturated hydrocarbon groups such as cyclopropyl group and cyclobutyl group; and cyclic unsaturated hydrocarbon groups such as cyclopropenyl group and cyclobutenyl group.

Among R ¹ , a hydrogen atom, a methyl group and an ethyl group are particularly preferred groups in the present invention from the viewpoint of availability.

In the general formula (I), X is an oxygen atom,
Oxymethylene group, a carbonyl group or - (CH _{2) k}
A group (k is the same as described above).

In the — (CH ₂ ) _k — group, k is
It is set to 1 or 2 from the viewpoint of availability.

In the above X, an oxygen atom, an oxymethylene group, and a carbonyl group are particularly preferred groups in the present invention from the viewpoint of detergency against resinous soil.

Y is a hydroxyl group, a hydrocarbon group having 1 to 7 carbon atoms or a-(R ² O) _j H group (R ² is an alkylene group having 2 or 3 carbon atoms, and j is an integer of 1 to 8) ).

The hydrocarbon group having 1 to 7 carbon atoms includes
For example, methyl group, ethyl group, propyl group, butyl group,
Linear saturated hydrocarbon groups represented by pentyl group, hexyl group and heptyl group; isopropyl group, isobutyl group,
branched saturated hydrocarbon group represented by sec-butyl group and tert-butyl group; linear unsaturated hydrocarbon group represented by vinyl group, allyl group, butenyl group, pentenyl group, hexenyl group and heptenyl group; A branched unsaturated hydrocarbon group such as a propenyl group; a cyclic saturated hydrocarbon group represented by a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group and a cycloheptyl group;
And cyclic unsaturated hydrocarbon groups represented by cyclopropenyl group, cyclobutenyl group, cyclopentenyl group, cyclohexenyl group and cycloheptenyl group.

In the — (R ² O) _j H group, R
² has 2 carbon atoms from the viewpoint of cleanability and availability.
Or 3 alkylene groups. In addition, j is an integer of 1 or more, preferably 2 or more, from the viewpoint of rinsing properties after washing, and is an integer of 8 or less, preferably 4 or less, from the viewpoint of improving washability.

The alkylene group having 2 or 3 carbon atoms includes an ethylene group and a propylene group.

Further, in the present invention, in the general formula (I), at least one of the group represented by X and the group represented by Y contains an oxygen atom, which makes it possible to remove resinous stains. It is more preferable in terms of properties.

Representative examples of the aromatic compound represented by the general formula (I) include, for example, alkyl benzene, aromatic alcohol, aromatic ether, aromatic ketone, aromatic glycol ether and the like.

Specific examples of the aromatic compound include alkylbenzenes such as ethylbenzene, propylbenzene, butylbenzene, pentylbenzene, hexylbenzene, heptylbenzene, octylbenzene, and nonylbenzene; benzyl alcohol, 4-ethylbenzyl alcohol, aromatic alcohols such as β-phenylethyl alcohol; anisole, phenetole, isopropylphenylether, butylphenylether, cyclohexylphenylether, benzylmethylether, benzylethylether, benzylisopropylether, benzylbutylether, benzylcyclohexylether, benzylphenylether, Aromatic agents such as cresyl methyl ether, diphenyl ether and dibenzyl ether Acetophenone, p-methylacetophenone, ethyl phenyl ketone, isopropyl phenyl ketone, butyl phenyl ketone, cyclohexyl phenyl ketone, benzyl methyl ketone, benzyl ethyl ketone, benzyl isopropyl ketone, benzyl butyl ketone, benzyl cyclohexyl ketone, benzyl phenyl ketone, diphenyl ketones, aromatic ketones such as dibenzyl ketone; (POE) ₁ ~ ₈ monophenyl ether, (POE) ₁ ~ ₈ monobenzyl ether, (P
OP) ₁ to ₈ monophenyl ether, (POP) ₁ to ₈
Examples thereof include aromatic glycol ethers such as monobenzyl ether and the like, but the present invention is not limited only to such examples. The aromatic compounds may be used alone or in combination of two or more.

In this specification, "(POE)"
Represents an ethylene oxide group, which is located at the lower right of (POE).
The subscript indicates the number of moles of the ethylene oxide group added. Ma
The term “(POP)” refers to a propylene oxide group.
The subscript at the lower right of (POP) is propylene oxide
Shows the number of moles of the added group. Also, for example, (POE) ₁ 
Monomethyl ether, (POE)_Two Monomethyl ether
Le, (POE)_Three Monomethyl ether, (POE)_Four Mo
Nomethyl ether, (POE)_Five Monomethyl ether,
(POE)₆ Monomethyl ether, (POE)₇ Thing
Chill ether and (POE)₈ Of monomethyl ether
Compound (POE)₁ ~₈ Monomethyl ether
May be abbreviated as follows.

Among the aromatic compounds, ethyl benzene
Zen, benzyl alcohol, 4-ethylbenzyl alcohol
, Β-phenylethyl alcohol, anisole,
Genetol, isopropyl phenyl ether, butyl ether
Phenyl ether, benzyl methyl ether, benzyl ether
Tyl ether, benzyl isopropyl ether, benzyl
Rubutyl ether, acetophenone, p-methylaceto
Phenone, ethyl phenyl ketone, isopropyl phenyl
Luketone, benzyl methyl ketone, benzyl ethyl keto
, Benzyl isopropyl ketone, benzyl butyl keto
Butyl phenyl ketone, (POE)₁ ~_Three Monofe
Nyl ether, (POE)₁ ~_Three Monobenzyl ether
Le, (POP)₁ ~_Three Monophenyl ether and (P
OP)₁ ~ _Three Monobenzyl ether has good cleaning performance and availability
Preferred compounds from the viewpoint of easiness. Above all,
Benzyl alcohol, β-phenylethyl alcohol
Le, (POE)₁~_ThreeMonophenyl ether and (P
OE)₁ ~_Three In the present invention, monobenzyl ether is used.
preferable.

In the aromatic detergent (a), the content of the aromatic compound is at least 50% by weight, preferably at least 65% by weight, more preferably at least 75% by weight, from the viewpoint of developing detergency. It is. From the viewpoint of improving the rinsing properties after washing, the content is preferably 95% by weight or less, more preferably 90% by weight or less, and further preferably 85% by weight or less.

The use of 20% by weight or less of water in the above-mentioned aromatic cleaning agent has one significant feature. By setting the water content to 20% by weight or less, there is an advantage that an effect of suppressing corrosion of the molded glass mold is provided.

The water used here is not particularly limited as long as it does not impair the effect of the aromatic detergent (a). For example, ultrapure water, pure water, ion-exchanged water, distilled water Water, ordinary tap water and the like are used.

In the present invention, the aromatic detergent (a) may not contain water, but may be used after being adjusted to an appropriate concentration with water. When the concentration is adjusted with water, the amount of water to be added is not particularly limited as long as it is 20% by weight or less, but is 3% by weight or more and 5% by weight from the viewpoint of safety and rinsing properties. % Or more is preferable,
10% by weight or more is more preferable. In addition, from the viewpoint of suppressing corrosion of the molded glass mold, the content of water is 20% by weight or less, preferably 15% by weight or less, and more preferably 12% by weight or less.

In the aromatic detergent (a), a water-soluble polyhydric alcohol such as diethylene glycol or triethylene glycol, a nonionic surfactant, or the like may be used, as long as the effects of the present invention are not impaired. Glycol ether compounds, chelating agents such as aminocarboxylates such as hydroxyethylaminoacetic acid, hydroxyethyliminodiacetic acid, and ethylenediaminetetraacetic acid; preservatives, rust preventives; antifoaming agents such as silicone; antioxidants; coconut fatty acids Additives used in ordinary cleaning agents such as esters such as methyl and benzyl acetate, hydrocarbon solvents, and alcohols can be appropriately contained. The content of these additives is preferably 50% by weight or less.

As described above, the aromatic detergent (b) contains 50% by weight or more of the aromatic compound and 0.005 to 25% by weight (calculated in terms of calcium ions) of a calcium ion releasing substance. is there.

The use of the aromatic compound in the aromatic detergent (b) has one significant feature. By using the aromatic compound, solubility of various stains attached to the plastic lens molded glass mold,
Since the permeability to various resinous soils and the swelling of the resinous soils are enhanced, excellent cleaning properties are exhibited.

The aromatic compound is represented by the general formula (I), and examples thereof include those used in the aromatic cleaning agent (a).

Among the aromatic compounds, ethyl benzene
Zen, benzyl alcohol, 4-ethylbenzyl alcohol
, Β-phenylethyl alcohol, anisole,
Genetol, isopropyl phenyl ether, butyl ether
Phenyl ether, benzyl methyl ether, benzyl ether
Tyl ether, benzyl isopropyl ether, benzyl
Rubutyl ether, acetophenone, p-methylaceto
Phenone, ethyl phenyl ketone, isopropyl phenyl
Luketone, benzyl methyl ketone, benzyl ethyl keto
, Benzyl isopropyl ketone, benzyl butyl keto
Butyl phenyl ketone, (POE)₁ ~_Three Monofe
Nyl ether, (POE)₁ ~_Three Monobenzyl ether
Le, (POP)₁ ~_Three Monophenyl ether and (P
OP)₁ ~ _Three Monobenzyl ether has cleaning performance and availability
It is a preferable compound from the viewpoint of easiness. Above all,
In particular, benzyl alcohol, β-phenylethyl alcohol
Le, (POE)₁~_ThreeMonophenyl ether and (P
OE)₁ ~_Three In the present invention, monobenzyl ether is used.
preferable.

In the aromatic detergent (b), the content of the aromatic compound is at least 50% by weight, preferably at least 65% by weight, more preferably at least 75% by weight, from the viewpoint of developing detergency. It is. From the viewpoint of improving the rinsing properties after washing, the content is preferably 95% by weight or less, more preferably 90% by weight or less, and further preferably 85% by weight or less.

When the composition of the aromatic detergent (b) contains an alkali agent and in the general formula (I), X is a carbonyl group and Y is a hydroxyl group,- The XY group becomes a carboxyl group, and the carboxyl group reacts with the alkali agent to form a salt. Since such a salt may deteriorate the detergency, in the present invention, it is desirable that the case where X is a carbonyl group and Y is a hydroxyl group is excluded.

The aromatic detergent (b) has one major feature in that a calcium ion releasing substance is used. Thus, in the present invention, by using a calcium ion releasing substance,
The alkali agent can be prevented from corroding the molded glass mold, exhibiting excellent detergency, and exhibiting excellent properties of maintaining the quality of the molded glass mold.

Representative examples of the above-mentioned calcium ion releasing substance include inorganic calcium salts and organic calcium salts.

Specific examples of the inorganic calcium salts include, for example, calcium hydroxide, calcium carbonate, calcium chloride, calcium bromide, calcium iodide, calcium nitrate, calcium nitrite, calcium hypophosphite, calcium phosphate, calcium pyrophosphate, Examples thereof include calcium tripolyphosphate and calcium polyphosphate, but the present invention is not limited to these examples.

When an inorganic acid calcium salt such as calcium hydroxide or calcium carbonate is used as the calcium ion releasing substance, for example, metal calcium or calcium oxide as a raw material of the inorganic acid calcium salt is used. It may be produced by blending with the cleaning composition of the present invention and reacting with water, an inorganic acid salt or the like therein.

Specific examples of the organic calcium salt include, for example, calcium linear alkyl carboxylate, calcium alkylene carboxylate, calcium aromatic carboxylate, calcium oxycarboxylate, calcium polycarboxylate, calcium aminocarboxylate, and the like. Examples thereof include organic calcium sulfate, organic calcium sulfonate, and organic calcium phosphate, but the present invention is not limited to such examples. These organic calcium salts may be used alone or in combination of two or more.

Specific examples of the calcium linear alkylcarboxylate and the calcium alkylenecarboxylate include, for example, calcium formate, calcium acetate, calcium propionate, calcium butyrate, calcium valerate, etc. However, the present invention is not limited to this.

Specific examples of the calcium aromatic carboxylate include, for example, calcium benzoate, calcium m-hydroxybenzoate, calcium p-hydroxybenzoate, calcium 2,3-dihydroxybenzoate,
Calcium 5-dihydroxybenzoate, calcium α-resorcinate, calcium β-resorcinate, calcium γ-resorcinate, calcium protocatechuate, calcium gallate, calcium salicylate, calcium phthalate, calcium benzylate, etc. The invention is not limited to only such examples.

Specific examples of the calcium oxycarboxylate include, for example, calcium glyoxylate, calcium glycolate, calcium lactate, calcium gluconate, calcium tertronate, calcium malate,
Examples include calcium tartrate, calcium citrate, calcium mucinate, and the like, but the present invention is not limited to such examples.

Specific examples of the above-mentioned calcium polycarboxylate include, for example, calcium oxalate, calcium malonate, calcium succinate, calcium glutarate, calcium adipate, calcium pimelate, calcium fumarate, calcium maleate, Examples thereof include calcium glycolate and calcium L-aspartate, but the present invention is not limited to these examples.

Specific examples of the calcium aminocarboxylate include, for example, calcium ethylenediaminetetraacetate, N-hydroxyethylenediamine-N, N ', N'
-Calcium triacetate, calcium diethylenetriaminepentaacetate, calcium nitrilotriacetate, calcium triethylenetetramine hexaacetate, calcium trans-1,2-cyclohexanediaminetetraacetate, calcium hydroxyethyliminodiacetate, N, N-di (2-hydroxy Ethyl) glycine calcium and the like, but the present invention is not limited to only such examples.

Specific examples of the above-mentioned organic calcium sulfate include calcium alkyl sulfate, calcium polyoxyethylene alkyl ether sulfate, calcium calcium polyoxyethylene alkyl phenyl ether, and the like, but the present invention is not limited thereto. It is not something to be done.

Specific examples of the above-mentioned organic calcium sulfonates include, for example, calcium alkylbenzenesulfonate, calcium alkylnaphthalenesulfonate, calcium dialkylsulfosuccinate, calcium alkyldiphenyletherdisulfonate, calcium salt of β-naphthalenesulfonic acid formalin condensate, etc. However, the present invention is not limited only to such an example.

Specific examples of the above-mentioned organic calcium phosphate include, for example, calcium alkyl phosphate, calcium aminotri (methylenephosphonate), calcium 1-hydroxyethylidene-1,1-diphosphonate, calcium ethylenediaminetetra (methylenephosphonate), diethylenetriaminepenta ( Calcium methylene phosphonate) and the like, but the present invention is not limited to only these examples.

Among the above calcium ion releasing substances, from the viewpoints of solubility in water and stability of the detergent composition, calcium hydroxide, calcium chloride, calcium nitrate, calcium nitrite, calcium hypophosphite, calcium phosphate, pyrophosphate, Calcium phosphate, calcium tripolyphosphate, calcium polyphosphate; calcium benzoate, calcium m-hydroxybenzoate, calcium p-hydroxybenzoate, calcium 2,3-dihydroxybenzoate, calcium 2,5-dihydroxybenzoate, calcium α-resorcinate, β-calcium β-resorcinate, calcium γ-resorcinate, calcium protocatechuate, calcium gallate, calcium benzylate, calcium glyoxylate, calcium glycolate, calcium lactate , Calcium gluconate, calcium Tatoron acid, calcium malate, calcium tartrate, calcium citrate, mucic acid calcium; L-calcium aspartate, ethylenediaminetetraacetic calcium acetate, N- hydroxy ethylenediamine -N, N ',
N'-calcium triacetate, calcium diethylenetriaminepentaacetate, calcium nitrilotriacetate, calcium triethylenetetramine hexaacetate, calcium trans-1,2-cyclohexanediaminetetraacetate, calcium hydroxyethyliminodiacetate, N, N-di (2 -Hydroxyethyl) glycine calcium, calcium alkyl sulfate, polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, calcium alkyl benzene sulfonate, calcium alkyl naphthalene sulfonate, calcium dialkyl sulfosuccinate, calcium alkyl diphenyl ether disulfonate Salt of β-naphthalenesulfonic acid formaldehyde condensate, aminotri (methylenepho Acid) Calcium, 1-hydroxyethylidene-1,1-calcium-diphosphonic acid, ethylenediamine tetra (methylene phosphonic acid) calcium and diethylenetriamine penta (methylene phosphonic acid) Calcium preferred.

The aromatic detergent (b) used in the present invention
The content of calcium ion-releasing substance (calculated in terms of calcium ions) is determined from the viewpoint of preventing glass corrosion.
0.005% by weight or more, preferably 0.01% by weight or more, more preferably 0.05% by weight or more, and 0.1% by weight or more.
% By weight or more is particularly preferred. In addition, from the viewpoint of product uniformity and maintaining the quality of the glass surface, the content is 25% by weight or less, preferably 15% by weight or less, more preferably 8% by weight or less, and most preferably 3% by weight or less.

In the present invention, an alkali agent may be added to the aromatic detergent (b) in order to further improve the detergency.

Examples of the alkaline agent include an inorganic alkaline agent and an organic alkaline agent.

As the inorganic alkaline agent, for example,
Examples thereof include alkali metal hydroxides and alkali metal weak acid salts.

Specific examples of the alkali metal hydroxide include, for example, lithium hydroxide, sodium hydroxide and potassium hydroxide, but the present invention is not limited to these examples.

Specific examples of the alkali metal weak acid salt include, for example, lithium silicate, lithium carbonate, lithium formate,
Examples include lithium acetate, sodium silicate, sodium carbonate, sodium formate, sodium acetate, potassium silicate, potassium carbonate, potassium formate, potassium acetate, and the like, but the present invention is not limited to only these examples.

In the cleaning composition of the present invention, the alkali metal hydroxide and the alkali metal weak acid salt are both reacted with an alkali metal or its metal oxide and water, a weak acid or a weak acid aqueous solution. May be obtained by doing so.

Examples of the organic alkaline agent include an amine compound having 1 to 5 primary, secondary and / or tertiary amine nitrogen atoms in one molecule and having a molecular weight of 50 to 10,000 and hydroxylation. At least one selected from the group consisting of quaternary ammonium compounds is exemplified.

The above-mentioned amine compounds are primary, secondary and / or tertiary in terms of imparting the detergent with water solubility and an excellent release effect in the aqueous phase near the contact surface with the resinous stain. It is desirable to have one or more, preferably two or more, amine nitrogen atoms in one molecule, and from the viewpoint of obtaining permeability into the interior of resinous soil, primary, secondary and / or tertiary amines are preferred. It is desirable to have 5 or less, and preferably 3 or less, nitrogen atoms.

The molecular weight of the amine compound is set at 50 or more from the viewpoint of reducing the content of the amine compound due to evaporation of the amine compound and avoiding the danger of handling. From the viewpoint of sufficiently exhibiting internal permeability, the content is set to 10,000 or less.

Representative examples of the above-mentioned amine compounds include, for example, a linear alkylamine having a linear alkyl group having 1 to 22 carbon atoms, a branched alkylamine having a branched alkyl group having 1 to 22 carbon atoms, and a ring. Formula amine, having 1 to 1 carbon atoms
An alkyl alkanolamine having an alkyl group of 8,
Examples include morpholines, heterocyclic amines, diamines, polyamines, and the like, but the present invention is not limited to these examples.

Specific examples of the linear alkylamine having a linear alkyl group having 1 to 22 carbon atoms include, for example, monomethylamine, monoethylamine, monopropylamine, monobutylamine, monoamylamine, monopentylamine and monopentylamine. Hexylamine, monoheptylamine,
Monooctylamine, monononylamine, monodecylamine, monoundecylamine, monolaurylamine, monotridecylamine, monomyristylamine, monopentadecylamine, monocetylamine, monoheptadecylamine, monostearylamine, mononona Decylamine, monoeicosylamine, dimethylamine, diethylamine, dipropylamine, dibutylamine, dipentylamine, dihexylamine, diheptylamine, dioctylamine, methylethylamine, methylpropylamine, methylbutylamine, methylhexylamine, trimethylamine, triethylamine , Tripropylamine, tributylamine, trioctylamine, dimethyloctylamine, dimethyllaurylamine, dimethylstearylamine, etc. But like, the present invention is not limited only to those exemplified.

Examples of the branched alkylamine having a branched alkyl group having 1 to 22 carbon atoms include, for example, sec.
-Butylamine, isobutylamine, tert-butylamine, 1-methylbutylamine, 1-ethylpropylamine, 2-methylbutylamine, isoamylamine,
Dimethylpropylamine, tert-amylamine,
1,3-dimethylbutylamine, 3,3-dimethylbutylamine, 2-aminoheptane, 3-aminoheptane,
1-methylheptylamine, 2-ethylhexylamine, 1,5-dimethylhexylamine, tert-octylamine, tert-tridecylamine, tert-
Examples include nanodecylamine, diisobutylamine, diisopropylethylamine, and the like, but the present invention is not limited to these examples.

Specific examples of the cyclic amine include, for example, cyclohexylamine, aniline, benzylamine, dicyclohexylamine, dibenzylamine, tribenzylamine, and the like, but the present invention is not limited to only these examples. is not.

Specific examples of the alkyl alkanolamine having an alkyl group having 1 to 18 carbon atoms include, for example, monoethanolamine, diethanolamine, triethanolamine, methylmonoethanolamine, dimethylmonoethanolamine, methyldiethanolamine, and butylmonoethanolamine. Examples thereof include ethanolamine, dibutylmonoethanolamine, trimethylaminopropylethanolamine, and trimethylhydroxyethyldiethylenetriamine. However, the present invention is not limited to these examples.

Specific examples of the morpholines include, for example, morpholine, N-methylmorpholine, N-ethylmorpholine, 2,6-dimethylmorpholine, 4- (2-hydroxyethyl) morpholine, 4-aminomorpholine,
Examples thereof include 4- (2-aminoethyl) morpholine, 4- (3-aminopropyl) morpholine, and the like, but the present invention is not limited to only these examples.

Specific examples of the heterocyclic amine include, for example, 4-aminomethylpyridine, aminomethylpiperazine, bisaminopropylpiperazine, trimethylaminoethylpiperazine, 2-aminomethylpiperidine,
-Aminomethylpiperidine, 2-methylpyrazine, quinoxaline, methylimidazole, and the like, but the present invention is not limited to only these examples.

Specific examples of the diamine include, for example,
Diaminopropane, diaminohexane, diaminooctane, diaminododecane, diaminodiphenylmethane, diaminodiphenylethane, 4,4′-methylenebis (cyclohexylamine), 1,3-diaminoxylene,
1,3-bis (aminomethyl) cyclohexane, triethylenediamine, tetramethylethylenediamine, tetramethylpropylenediamine, tetramethylhexamethylenediamine, methyldiaminopropane, dimethyldiaminopropane, dibutyldiaminopropane, stearylpropylenediamine, N-cyclohexyl-1 , 3-diaminopropane, 1,2-diaminoanthraquinone, pentamethyldiethylenetriamine and the like,
The present invention is not limited to only such examples.

Specific examples of the polyamine include, for example, diethylene triamine, triethylene tetramine,
Polymer or polymer of a polymerizable monomer containing a tertiary amino group such as tetraethylenepentamine, polyethyleneimine, polyvinylpyridine, polyallylamine, polyvinylamine, polyacrylohydrazide, polydimethylaminoethyl methacrylate, polydiethylaminoethyl methacrylate or the like Of nonionic monomer and polyamide monomer, polyamide / epihalohydrin polymer, tertiary aminated starch, tertiary aminated cellulose, glycol chitosan, tertiary aminated polyurethane resin, tertiary aminated polyacrylamide And the like, but the present invention is not limited to only such examples.

Specific examples of the quaternary ammonium hydroxide compound include, for example, tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrabutylammonium hydroxide, tetraoctylammonium hydroxide, tetrabenzylammonium hydroxide, Trimethylcyclohexylammonium hydroxide, triethylphenylammonium hydroxide, trimethylbenzylammonium hydroxide, triethylbenzylammonium hydroxide, tributylmethylammonium hydroxide, tributylcyclohexylammonium hydroxide, tribenzylmethylammonium hydroxide, trimethylhydroxyethylammonium hydroxide ( Choline), tetraethanol Ammonium hydroxide, methyl triethanol ammonium hydroxide, benzyl methyl diethanol ammonium hydroxide, the like benzyl triethanolammonium hydroxide and the like, the present invention is not limited only to those exemplified.

Among the above alkaline agents, alkali metal hydroxides and alkali metal weak acid salts are used from the viewpoint of lowering the molecular weight of resinous stains due to having high alkalinity, enhancing the releasability, and imparting excellent cleaning performance. At least one selected from inorganic alkali agents and quaternary ammonium hydroxide compounds are preferred.

Among the above alkaline agents, sodium hydroxide, potassium hydroxide, sodium silicate, sodium carbonate, potassium silicate, and carbonate are preferable from the viewpoints of detergency and durability, availability and economy. Potassium, tetramethylammonium hydroxide and trimethylhydroxyethylammonium hydroxide (choline) are preferred.

In the case of using a washing machine in which metals such as aluminum, nickel, copper, zinc and tin, alloys such as brass, brass and solder, and plated parts are used, the above-mentioned alkali is used. Among the agents, first-class,
An amine compound having 1 to 5 secondary and / or tertiary amine nitrogen atoms in one molecule and having a molecular weight of 50 to 10,000 suppresses corrosion of members related to cleaning equipment by alkali. However, it is preferable from the viewpoint of exhibiting even more excellent detergency due to the high compatibility with the resinous soil component and the penetration into the resinous soil and the swelling effect of the resinous soil.

Specific examples of the amine compound exhibiting such excellent properties include, for example, monomethylamine,
Monoethylamine, monopropylamine, monobutylamine, monoamylamine, monohexylamine, monooctylamine, monodecylamine, dimethylamine, diethylamine, dipropylamine, dibutylamine, methylethylamine, methylpropylamine, methylbutylamine, trimethylamine, Triethylamine, tripropylamine, sec-butylamine, isobutylamine, tert-butylamine, 1-methylbutylamine, 1-ethylpropylamine, 2-methylbutylamine, isoamylamine, dimethylpropylamine, te
rt-amylamine, 1,3-dimethylbutylamine,
3,3-dimethylbutylamine, 2-aminoheptane,
3-aminoheptane, 1-methylheptylamine, 2-
Ethylhexylamine, 1,5-dimethylhexylamine, tert-octylamine, diisobutylamine,
Cyclohexylamine, benzylamine, monoethanolamine, diethanolamine, triethanolamine, methylmonoethanolamine, dimethylmonoethanolamine, methyldiethanolamine, butylmonoethanolamine, trimethylaminopropylethanolamine, trimethylhydroxyethyldiethylenetriamine, diaminopropane, diaminohexane , Diaminooctane, diaminododecane, 4,4-methylenebiscyclohexylamine, 1,3-diaminoxylene, 1,
3-bis (aminomethyl) cyclohexane, triethylenediamine, tetramethylethylenediamine, tetramethylpropylenediamine, tetramethylhexamethylenediamine, methyldiaminopropane, dimethyldiaminopropane, dibutyldiaminopropane, N-cyclohexyl-1,3-diaminopropane, 1,2-diaminoanthraquinone, pentamethyldiethylenetriamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and the like, all of which are preferable from the viewpoints of improvement in washability, persistence of washability, and availability. Things.

In particular, an alkyl alkanolamine having an alkyl group having 1 to 18 carbon atoms and a diamine are preferred.

In the case where an inorganic alkali agent such as an alkali metal hydroxide and an alkali metal weak acid salt or a quaternary ammonium hydroxide compound is used as the alkali agent,
From the viewpoint of improving detergency, the content in the aromatic detergent (b) is not particularly limited, but is preferably 0.5% by weight or more, and preferably 1% by weight.
It is more preferably at least 2% by weight, most preferably at least 2% by weight, and from the viewpoint of handling safety, preferably at most 30% by weight, more preferably at most 20% by weight. Most preferably it is less than or equal to% by weight.

When the amine compound is used as the alkali agent used in the present invention, the content in the aromatic detergent (b) is not particularly limited, from the viewpoint of improving the detergency. Is preferably at least 1% by weight, more preferably at least 5% by weight, most preferably at least 8% by weight, and
From the viewpoint of handling safety, the content is preferably 40% by weight or less, more preferably 30% by weight or less, and most preferably 20% by weight or less.

The content of the alkaline agent in the aromatic cleaning agent (b) is not particularly limited, but is 0.1% by weight or more from the viewpoint of improving detergency.
0.5% by weight or more, preferably 1% by weight or more, more preferably 2% by weight or more, and from the viewpoint of handling safety, 50% by weight or less, 40% by weight
Or less, more preferably 30% by weight or less, and 20% by weight or less.
% By weight or less is more preferred.

In the aromatic cleaning agent (b) used in the cleaning method of the present invention, as in the case of the aromatic cleaning agent (a), an additive usually used in a cleaning agent may be appropriately contained. Can be. The content of these additives is preferably 50% by weight or less.

In the case where the composition of the aromatic detergent (b) contains a component accompanied by a reaction, it is possible to use a component obtained by reacting the component in advance.

The washing method used in the step (A) is as follows.
There is no particular limitation, and a commonly used known method can be used. For example, washing methods such as an immersion method, an immersion rocking method, an ultrasonic cleaning method, a spray method, and a hand wiping method are exemplified. Further, the washing conditions such as the temperature and washing time of the aromatic detergents (a) and (b) are not particularly limited, and the type, constituent components, polymerization state, amount of adhesion, and location of the resinous soil are set forth. It may be appropriately selected depending on the adhesion state, the size and number of the molded glass mold, the required degree of cleanliness, the capacity of the cleaning machine, the permissible cleaning time and the like.

The step (B) is a step of further washing the molded glass mold washed in the step (A) using an alkaline cleaning agent containing an alkali agent.

In the present invention, there is one major feature in that the molded glass mold washed with an aromatic detergent is further washed with an alkaline detergent containing an alkali agent. The use of the alkaline cleaning agent further reduces the molecular weight of the resinous dirt dissolved and swollen in the step (A), peels off various dirt from the molded glass mold, and further enhances the detergency. it can.

As the alkaline agent, the step (A)
Examples of the alkaline agent used in the above are also exemplified.

In the case where an inorganic alkali agent of an alkali metal hydroxide or an alkali metal weak acid salt or a quaternary ammonium hydroxide compound is used as the alkali agent, the content of the alkali agent in the alkali detergent is improved from the viewpoint of improving detergency. The amount is preferably at least 0.5% by weight,
It is more preferably at least 1% by weight, most preferably at least 2% by weight, and from the viewpoint of handling safety, preferably at most 30% by weight, more preferably at most 20% by weight. It is preferably at most 10% by weight.

When the above-mentioned amine compound is used as the alkaline agent used in the present invention, the content of the above-mentioned alkaline detergent is preferably from the viewpoint of improving detergency.
It is preferably at least 1% by weight, more preferably at least 5% by weight, most preferably at least 8% by weight, and preferably at most 40% by weight from the viewpoint of handling safety. , 30% by weight or less, and most preferably 20% by weight or less.

The content of the alkaline agent in the alkaline cleaning agent is 0.5% by weight or more, preferably 1% by weight or more, more preferably 2% by weight or more, from the viewpoint of improving the detergency. % By weight or more is particularly preferred. Further, from the viewpoint of handling safety, the content is 50% by weight or less, preferably 40% by weight or less, more preferably 30% by weight or less, and particularly preferably 20% by weight or less.

In the present invention, the alkaline cleaning agent includes
Also in the point that calcium ion releasing substances are used,
There is one major feature. As described above, in the present invention, the use of the calcium ion-releasing substance can prevent the molded glass mold from being corroded, and is used in combination with the cleaning agent containing the aromatic compound and the alkali agent. By doing, excellent detergency is expressed,
An excellent property that the quality of the molded glass mold can be maintained is exhibited.

[0099] Examples of the calcium ion releasing substance include those used in the step (A).

The content of the calcium ion-releasing substance (calcium ion equivalent amount) in the alkaline detergent is as follows:
From the viewpoint of preventing corrosion of glass, the content is 0.005% by weight or more, preferably 0.01% by weight or more, more preferably 0.05% by weight or more, and still more preferably 0.1% by weight or more. From the viewpoints of properties and maintaining the quality of the glass surface, the content is 25% by weight or less, preferably 15% by weight or less, more preferably 8% by weight or less, and still more preferably 3% by weight or less.

The alkali-based detergent has a water content of at least 59% by weight, preferably at least 65% by weight, more preferably at least 70% by weight, from the viewpoint of uniformity of the detergent product. Bond breaking for resinous stain of alkaline agent,
From the viewpoint of promoting the alkali action such as depolymerization and peeling, the content is 97% by weight or less, preferably 94% by weight or less, and more preferably 90% by weight or less.

In the above-mentioned alkaline cleaning agent, as in the step (A), additives which are usually used for a cleaning agent can be appropriately contained.

When the alkaline cleaning composition contains a component that involves a reaction, it is possible to use a pre-reacted component.

The cleaning method used in the step (B) is as follows.
There is no particular limitation, and the method used in the step (A) is exemplified similarly.

The washing conditions such as the temperature of the alkaline detergent and the washing time are not particularly limited, and the type, constituent components, polymerization state, adhesion amount, adhesion place, adhesion state, What is necessary is just to select suitably according to the magnitude | size and number of a shaping | molding glass mold, the required degree of cleanliness, the capacity of a washing machine, the permissible cleaning time, etc.

Step (C) is a step of rinsing the molded glass mold washed in step (B) with rinsing water.

In the step (C), the molded glass mold cleaned by the cleaning method of the present invention can be rinsed easily and in a short time.

The rinsing water is not particularly limited as long as it can remove contaminants remaining on the surface of the molded glass mold. Examples of the rinsing water include ultrapure water, pure water, ion-exchanged water, distilled water, and tap water. Water and the like are preferred from the viewpoint of rinsing properties. Also, the rinsing method is not particularly limited, and the same method as the cleaning method in step (A) can be used. The rinsing condition is not particularly limited, and may be appropriately selected.

According to the cleaning method of the present invention, first, an aromatic cleaning agent which exerts an effect of swelling resinous soil and the like by dissolving and penetrating, and further exhibiting an effect of suppressing corrosion of a molded glass mold ( (a) or (b), an alkali-based cleaning agent that imparts the effect of breaking and peeling resinous dirt and the like by breaking and bonding and reducing the molecular weight, and also exhibits the effect of suppressing corrosion of the molded glass mold. Therefore, dirt can be efficiently cleaned in a short time, and an excellent effect of suppressing corrosion of glass is exhibited. Further, the cleaning method of the present invention also has an excellent effect of high safety for the human body during cleaning.

EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the present invention.

Production Example [Production of Test Piece] (1) Preparation of Diethylene Glycol Bisallyl Carbonate (ADC) Resin-like Dirt A watch-glass-shaped dent having a diameter of 20 mm and a maximum depth of 2 mm was prepared.
4.7 mm x 75.4 mm x 2 made of glass
A 6.0 mm three-hole slide glass (produced by Iuchi Seieido Co., Ltd.) was prepared. 100 parts by weight of ADC (manufactured by PPG, trade name: CR-39 monomer) as a monomer, and diisopropyl peroxydicarbonate [manufactured by NOF CORPORATION, trade name: Parloyl IPP-2, as a polymerization initiator]
7 (CR)] and 11 parts by weight at a low temperature (−10 to 10 ° C.)
To obtain a mixture. 0.22 mL of the obtained mixture was poured into each of the recesses of the slide glass kept horizontally so that the height of the mixture was the same as the upper surface of the slide glass, and the amount of resin injected per one 3-hole slide glass. To 0.66 mL,
A polymer having a uniform shape was obtained.

The 3-hole slide glass was placed in a tray with a lid made of stainless steel, the inside of which was replaced with nitrogen gas, and then completely sealed. Then, at 40 ° C for 2 hours, 60
Polymerization and solidification were performed by heating at 80 ° C. for 2 hours and further at 80 ° C. for 18 hours to obtain a test piece for a cleaning test of ADC resin soil.

(2) Preparation of urethane resinous soil 4,4'-methylenebis (phenylisocyanate)
100 parts by weight of [Millionate MT manufactured by Nippon Polyurethane Industry Co., Ltd.] and 36.8 parts by weight of glycerin [purified glycerin manufactured by Kao Corporation] were mixed at 40 ° C. under reduced pressure (4,4 ′). A molar ratio of methylenebis (phenylisocyanate) to glycerin = 1: 1). 0.5 mL of this mixture is placed horizontally in a central portion of a glass watch glass (manufactured by Corning) having a diameter of 100 mm and a maximum depth of 10 mm so that a uniform perfect circular polymer can be obtained. did. Further, the watch glass was placed in a tray with a lid, and was replaced with nitrogen gas passing through a desiccant and then completely sealed. After heating at 120 ° C. for 2 hours, the mixture was further heated at 180 ° C. for 5 hours to polymerize and solidify, thereby obtaining a test piece for a urethane resin-like soil washing test.

(3) Production of test piece for glass corrosion test: 1.1 mm × 76.0 mm × 26.0 mm alkali silicate glass (composition: 70% SiO ₂ , 12% Na ₂ O,
6.5% CaO, 4% K ₂ O, 4% ZnO, 1% Mg
O, 1% BaO, 1% Al 2 O 3, 0.5% TiO 2)
Slide glass [Matsunami Glass Industry Co., Ltd., trade name:
S-1112] was immersed in a potassium nitrate molten salt maintained at 400 to 410 ° C. for 24 hours. Thereafter, the mixture was cooled slowly to room temperature, and potassium nitrate was washed away with running water. After thoroughly draining and air-drying, a chemically strengthened glass test piece for a glass corrosion test was prepared.

Preparation Example [Preparation of aromatic detergent and alkaline detergent] Table 1
Various aromatic detergents and alkali detergents having the compositions shown in Tables 1 to 3 were prepared, and the cleaning properties of the glass and the corrosion prevention properties of the glass were evaluated using these cleaning compositions in combination. Table 1 shows the compositions of various aromatic cleaning agents, and Tables 2 and 3 show the compositions of various alkaline cleaning agents.

[0115]

[Table 1]

[0116]

[Table 2]

[0117]

[Table 3]

Examples 1 to 6 and Comparative Examples 1 to 10 [Washing Test] The aromatic cleaning agent shown in Table 1 was used by holding the test pieces for the washing test of the ADC resin stain and the urethane resin stain at 60 ° C. Immersion, 39kHz, 200W
Ultrasonic cleaning equipment (Sharp Corp., trade name: SIL)
Washed with ENTSONIC UT-204) for 30 seconds.

Next, the washed test piece was immersed in an alkaline cleaning agent shown in Tables 2 and 3 maintained at 60 ° C., and a 39 kHz, 200 W ultrasonic cleaning device (manufactured by Sharp Corporation, trade name: SILENTSONIC UT) -2
04) for 30 seconds. In Comparative Examples 9 and 10, the order of washing from [aromatic detergent] to [alkali detergent] was changed from [alkali detergent] to [aromatic detergent].

Next, it is immersed in ion-exchanged water at 30 ° C.
Rinsing was performed for 50 seconds with the same ultrasonic cleaning device as the cleaning (first rinsing). Furthermore, it was similarly immersed in ion-exchanged water at 30 ° C., and finished and rinsed with an ultrasonic cleaning device for 50 seconds (second rinse). Thereafter, air blow is performed for 50 seconds, and a blower constant temperature dryer (manufactured by Toyo Seisakusho Co., Ltd., trade name: FV-6)
30) It was dried at 80 ° C. for 10 minutes.

For each washing method, AD
Five test pieces each of C resin stain and urethane resin stain were washed, and the washing rate of the model resinous stain was obtained from the change in the weight of the test piece before and after washing. ).

[Glass Corrosion Test] The above-mentioned chemically strengthened glass test pieces for the glass corrosion test were kept at 80 ° C. for 12 hours in the same order as the cleaning method as an accelerated test. 2 in total for the described cleaning composition
Dipped for 4 hours. The test solution was divided into two. The test piece taken out from the detergent composition was thoroughly rinsed with clean ion-exchanged water, air blown for one minute, and air-dried indoors.

In Comparative Examples 9 and 10, the order of cleaning from [aromatic cleaning agent] to [alkali cleaning agent] was changed from [alkali cleaning agent] to [aromatic cleaning agent].

Under the above conditions, five test pieces were cleaned, melted by glass corrosion, and the weight reduction ratio (%) was determined from the change in weight of the test pieces before and after cleaning, and the average value was calculated. , As an index of glass corrosivity.
At the same time, the state of the glass surface was visually determined. The criterion at that time is as follows.

[Judgment Criteria] な し: no change ご: very slight, partial whitening Δ: partial whitening ×: overall whitening

Table 4 shows the results of Examples 1 to 6, and Table 5 shows the results of Comparative Examples 1 to 10.

[0127]

[Table 4]

[0128]

[Table 5] From the results shown in Tables 4 and 5, the cleaning methods of Examples 1 to 6 were compared with the cleaning methods of Comparative Examples 1 to 8 in terms of cleaning rates for ADC resin stains and urethane resin stains, and evaluations for glass corrosivity. It can be seen that all of them are excellent.

Further, it can be seen that the cleaning methods of Examples 1 to 6 shown in Table 4 are superior in cleaning performance as compared with the cleaning methods of Comparative Examples 9 and 10 in which the order of cleaning is reversed. .

The method of cleaning a glass mold for plastic lens of the present invention has excellent cleaning properties against various resinous stains and has an excellent effect of not corroding the glass mold. . Further, since the cleaning agents used in the cleaning method of the present invention are all highly safe for the human body, the cleaning method of the present invention has an excellent effect of high safety for the human body during cleaning. Is played.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C11D 7/32 C11D 7/32 7/34 7/34 7/36 7/36 7/50 7/50 // B29D 11/00 B29D 11/00

Claims (6)

[Claims] (A) A plastic lens-molded glass mold is represented by the following general formula (I): (Wherein, R ¹ is a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms, X is an oxygen atom, an oxymethylene group, a carbonyl group, or a — (CH ₂ ) _k — group [k represents 1 or 2], Y
Is a hydroxyl group, a hydrocarbon group having 1 to 7 carbon atoms or-(R
² O) _j H group [R ² represents an alkylene group having 2 or 3 carbon atoms, j is an integer of 1-8] containing less aromatics 50 wt% or more and 20% by weight of water represented by showing a) Aromatic detergent (a) or an aromatic compound represented by formula (I) of 50% by weight or more and a calcium ion-releasing substance of 0.005 to 25% by weight
After washing with an aromatic detergent (b) containing [calcium ion equivalent amount] (B), the washed molded glass mold is subjected to 0.5 to 50% by weight of an alkali agent and a calcium releasing substance. A plastic lens characterized by being washed with an alkaline detergent containing 0.005 to 25% by weight (calcium ion equivalent), and then (C) rinsing the washed molded glass mold with rinsing water. Cleaning method for molded glass mold. 2. The method according to claim 1, wherein the calcium ion releasing substance is calcium hydroxide, calcium carbonate, an inorganic acid calcium salt, a linear alkyl calcium carboxylate, a calcium alkylene carboxylate, a calcium aromatic carboxylate, a calcium oxycarboxylate, or a polyvalent carboxylate. The cleaning method according to claim 1, wherein the cleaning method is at least one selected from the group consisting of calcium acid, calcium aminocarboxylate, organic calcium sulfate, organic calcium sulfonate, and organic calcium phosphate. 3. The method according to claim 1, wherein the alkaline agent is at least one selected from the group consisting of an organic alkaline agent and an inorganic alkaline agent.
3. The cleaning method according to claim 1, which is a seed. 4. An amine compound having 1 to 5 primary, secondary and / or tertiary amine nitrogen atoms in one molecule and having a molecular weight of 50 to 10,000, and an organic alkali agent. The cleaning method according to claim 3, wherein the cleaning method is at least one selected from the group consisting of quaternary ammonium compounds. 5. The cleaning method according to claim 3, wherein the inorganic alkaline agent is at least one selected from the group consisting of an alkali metal hydroxide and an alkali metal weak acid salt. 6. The cleaning method according to claim 1, wherein the aromatic compound is at least one selected from the group consisting of alkylbenzenes, aromatic alcohols, aromatic ethers, aromatic ketones, and aromatic glycol ethers. Method.