JPH11172300A - Cleaner composition for plastic lens molding glass mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a composition excellent in detergency for high-molecular resinous contaminants and safety to the human body in use and noncorrosive to a glass mold. SOLUTION: There are provided a cleaner composition for a plastic molding glass mold, comprising 0.5-40 wt.% alkali agent; 0.25-20 wt.% at least one surfactant selected from the group consisting of sulfonate type anionic surfactants, sulfate ester type anionic surfactants, phosphoric ester salts type anionic surfactants, aromatic quat. ammonium salt type cationic surfactants, and nonionic surfactants having an average HLB(hydrophile-lipophile balance) of 4-18, 0.005-15 wt.% (in terms of the calcium ions) calcium-ion-releasing substance; and the balance of water and a method for cleaning a glass mold therewith.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cleaning composition for a plastic lens molded glass mold and a cleaning method using the same. More specifically, plastic lens molding raw materials, unreacted monomers, oligomers, polymers, components bleed-out from gaskets, plasticizers, adhesives, and molds fixed to molded glass molds used in the manufacture of various optical plastic lenses TECHNICAL FIELD The present invention relates to a cleaning composition for a plastic lens-molded glass mold for cleaning high-molecular-weight resinous dirt such as an adhesive derived from a tape for cleaning, and a cleaning method using the same.

[0002]

2. Description of the Related Art As resins for optical plastic lenses, for example, allyl diglycol carbonate (AD)
C) Resins, urethane resins, sulfur-containing urethane resins, methacrylic resins, acrylic resins, polycarbonate resins, bromine-containing resins, olefin resins, styrene resins, norbornene resins, thioether / ester resins, etc. in use.

[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.

On the other hand, after the plastic lens is released from the mold, the molded glass mold 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. When such dirt is attached to the molded glass mold, a high-quality plastic lens with a smooth surface cannot be obtained, or when the dirt accumulates on the molded glass mold, the obtained plastic lens is damaged or scratched. Due to the danger, the molded glass mold cannot be used and may have to be discarded.

Among the stains, high molecular weight resinous stains such as oligomers and polymers derived from raw materials for molding plastic lenses, components bleed out from gaskets, adhesives, and adhesives derived from mold fixing tapes are used for molding 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.

[0006] An alkali-based cleaning agent, which mainly removes adhered dirt and has a main cleaning mechanism, has insufficient detergency when the amount of the contained inorganic alkaline agent is small, and the dirt is removed. It takes a long time to completely remove, and it is necessary to remove dirt manually. In addition, when the amount of the inorganic alkali agent is increased in order to provide a 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 surface of the molded glass mold in this way, a high-quality plastic lens having a smooth surface cannot be obtained, and the polishing and surface strengthening treatment must be performed again. There is a problem that it has to be discarded, and as a result, it becomes very uneconomical.

Therefore, as a cleaning agent for glass which hardly damages the glass surface, for example, a cleaning agent using a quaternary ammonium hydroxide base, a nonionic surfactant and an alkanolamine (Japanese Patent Laid-Open Publication No. Hei. 27169
No. 9) and a detergent using water glass as a builder (Japanese Patent Application Laid-Open No. 9-71799) has been proposed.
However, although these cleaning agents do not cause much damage to the glass surface, they have a drawback that surface roughness occurs during repeated use of the molded glass mold.

Further, a detergent using an inorganic alkali base and a calcium ion-releasing substance or a calcium complex has been proposed (Japanese Patent Application Laid-Open No. 61-157595). However, such a cleaning agent has a drawback that cleaning properties against high molecular weight resinous dirt are insufficient.

[0009]

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. It is an object of the present invention to provide a detergent composition for a plastic lens molded glass mold that does not use the same.

[0010] Another object of the present invention is to provide a cleaning method which is excellent in detergency for high molecular weight resinous dirt and safety for a human body at the time of cleaning, and can be cleaned without corroding a molded glass mold. And

[0011]

That is, the gist of the present invention is as follows.
[1] (a) 0.5 to 40% by weight of an alkali agent, (b)
Sulfonate type anionic surfactant, sulfate ester type anionic surfactant, phosphate ester type anionic surfactant, aromatic quaternary ammonium salt type cationic surfactant and average HLB (hydrophilic lipophilic balance) 4-1
0.25 to 20% by weight of at least one surfactant selected from the group consisting of 8 nonionic surfactants, and (c) 0.005 to 15% by weight of calcium ion-releasing substance (calcium ion conversion) A cleaning composition for a plastic lens molded glass mold comprising water,
[2] The detergent composition according to [1], further comprising (e) a sequestering agent, [3] the alkali agent is selected from the group consisting of an inorganic alkali agent and an organic alkali agent. [1] The cleaning composition according to [1] or [2], wherein the inorganic alkali agent is at least one selected from the group consisting of alkali metal hydroxides and alkali metal weak acid salts. [3]
The detergent composition as described in [5], wherein the organic alkaline agent has 1 to 5 primary, secondary and / or tertiary amine nitrogen atoms in one molecule and has a molecular weight of 50 to 10,000. The cleaning composition according to the above [3] or [4], which is at least one member selected from the group consisting of a system compound and a quaternary ammonium hydroxide compound; , Calcium carbonate, inorganic acid calcium salt, linear calcium alkyl carboxylate, calcium alkylene carboxylate, calcium aromatic carboxylate, calcium oxycarboxylate, polyvalent calcium carboxylate, calcium aminocarboxylate, organic calcium sulfate, organic sulfonic acid At least one selected from the group consisting of calcium and organic calcium phosphate The cleaning composition according to any one of the above [1] to [5], [7] (A) Cleaning a plastic lens molded glass mold using the cleaning composition according to any one of the above [1] to [6]. And (B) a method for cleaning a plastic lens molded glass mold, characterized by rinsing the washed molded glass mold with rinsing water.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION As described above, the detergent composition for a plastic lens-molded glass mold of the present invention comprises (a) 0.5 to 40% by weight of an alkali agent and (b) a sulfonate type anionic surfactant Agent, sulfate ester type anionic surfactant, phosphate ester type anionic surfactant, aromatic quaternary ammonium salt type cationic surfactant and average HL
0.25 to 20% by weight of at least one surfactant selected from the group consisting of nonionic surfactants having a B (hydrophilic-lipophilic balance) of 4 to 18, and (c) a calcium ion-releasing substance 0 0.005 to 15% by weight (calculated in terms of calcium ions), with the balance being water.

In the present invention, there is one great feature in that the alkali agent and the surfactant are used in combination. As described above, by using the alkali agent and the surfactant in combination, the solubility of various resinous 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 and the disintegration property of the contaminants accompanying the swelling property are synergistically enhanced, excellent detergency is exhibited.

The alkaline agent includes an inorganic alkaline agent and an organic alkaline agent.

Examples of the inorganic alkaline agent include:
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, potassium hydroxide and the like, but the present invention is not limited only 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 only to such examples.

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

Examples of the organic alkaline agent include amine compounds 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.

From the viewpoint of increasing the solubility in water and sufficiently exhibiting the effect of removing dirt in the aqueous phase near the contact surface of the resinous dirt, the above-mentioned amine compounds are primary, secondary and / or tertiary. It is desirable to have one or more, preferably two or more, amine nitrogen atoms in one molecule, and from the viewpoint of sufficiently exhibiting permeability into the interior of resinous soil, primary, secondary and / or primary amines are preferred. It is desirable to have no more than 5, preferably no more than 3, tertiary amine nitrogen atoms.

The molecular weight of the amine compound is 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 amine compounds include, for example, linear alkylamines, branched alkylamines having a branched alkyl group, cyclic amines, alkylalkanolamines, morpholines, heterocyclic amines, diamines, polyamines And the like, but the present invention is not limited to only such examples.

Specific examples of the linear alkylamine include, for example, monomethylamine, monoethylamine, monopropylamine, monobutylamine, monoamylamine, monohexylamine, monooctylamine, monodecylamine, monolaurylamine, and monolaurylamine. Myristylamine, monocetylamine, monostearylamine, dimethylamine, diethylamine, dipropylamine, dibutylamine, methylethylamine, methylpropylamine, methylbutylamine, methylhexylamine, trimethylamine, triethylamine, tripropylamine, tributylamine, etc. Can be

Examples of the branched alkylamine include sec-butylamine, isobutylamine, and tertiary butylamine.
t-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, te
rt-nanodecylamine, diisobutylamine, diisopropylethylamine and the like.

Specific examples of the cyclic amine include cyclohexylamine, benzylamine, dicyclohexylamine, dibenzylamine and the like.

Specific examples of the above-mentioned alkylalkanolamines include, for example, monoethanolamine, diethanolamine, triethanolamine, methylmonoethanolamine, dimethylmonoethanolamine, methyldiethanolamine, butylmonoethanolamine, trimethylaminopropylethanolamine and trimethylamine. Hydroxyethyldiethylenetriamine and the like.

Specific examples of the morpholines include, for example, morpholine, N-methylmorpholine, N-ethylmorpholine, 2,6-dimethylmorpholine, 4- (2-hydroxyethyl) morpholine, 4-aminomorpholine,
4- (2-aminoethyl) morpholine, 4- (3-aminopropyl) morpholine and the like.

Specific examples of the heterocyclic amine include, for example, 4-aminomethylpyridine, aminomethylpiperazine, bisaminopropylpiperazine, trimethylaminoethylpiperazine, 2-aminomethylpiperidine,
-Aminomethylpiperidine, 2-methylpyrazine, quinoxaline, methylimidazole and the like.

Specific examples of the diamine include, for example,
Diaminopropane, diaminohexane, diaminooctane, diaminododecane, 4,4′-methylenebis (cyclohexylamine), 1,3-diaminoxylene,
3-bis (aminomethyl) cyclohexane, triethylenediamine, tetramethylethylenediamine, tetramethylpropylenediamine, tetramethylhexamethylenediamine, methyldiaminopropane, dimethyldiaminopropane, dibutyldiaminopropane, N-cyclohexyl-1,3-diaminopropane, Examples thereof include 1,2-diaminoanthraquinone and pentamethyldiethylenetriamine.

Specific examples of the polyamine include, for example, diethylene triamine, triethylene tetramine,
Polymer comprising a polymerizable monomer containing a tertiary amino group such as tetraethylenepentamine, or a copolymer of the polymerizable monomer and a nonionic monomer, polyamide / epihalohydrin-based polymer, tertiary amino Starch, tertiary aminated cellulose, glycol chitosan, tertiary aminated polyurethane resin, tertiary aminated polyacrylamide, and the like.

Further, specific examples of the quaternary ammonium hydroxide compound include, for example, tetramethylammonium hydroxide, tetraethylammonium hydroxide, trimethylhydroxyethylammonium hydroxide (choline) and the like.

Among the above alkali agents, alkali metal hydroxides and alkali metal weak acid salts are used from the viewpoint of having a high alkalinity to reduce the molecular weight and releasability of resinous soil and to provide excellent cleaning performance. At least one selected from inorganic alkali agents and quaternary ammonium hydroxide compounds are preferred.

Among the above-mentioned alkaline agents, sodium hydroxide, potassium hydroxide, sodium silicate, sodium carbonate, sodium carbonate Potassium acid, potassium carbonate, tetramethylammonium hydroxide and trimethylhydroxyethylammonium hydroxide (choline) are preferred.

When the cleaning is performed using a cleaning machine that uses metals such as aluminum, nickel, copper, zinc and tin, alloys such as brass and solder, and plated parts, the above alkaline agent is used. Among them, primary, secondary and / or tertiary amine-based nitrogen atoms are contained in one molecule in one to one.
The amine compound containing 5 and having a molecular weight of 50 to 10,000 suppresses corrosion of components related to the cleaning equipment due to alkali, and penetrates into resinous soil due to high compatibility with the resinous soil component. It is preferable from the viewpoint of exhibiting more excellent detergency by the swelling effect of resinous soil. Among the amine compounds, alkyl alkanolamines and diamines having an alkyl group having 1 to 18 carbon atoms are particularly preferred.

The alkaline agent may be used alone or
A mixture of more than one species can be used.

In the case where an inorganic alkali agent such as an alkali metal hydroxide or an alkali metal weak acid salt or a quaternary ammonium hydroxide compound is used as the alkali agent, the detergent composition of the present invention is used from the viewpoint of improving detergency. The content of the alkali agent in the product is preferably 0.5% by weight or more, more preferably 1% by weight or more,
It is more preferably at least 2% by weight, most preferably at least 4% by weight. From the viewpoints of product uniformity and handling safety, the content of the alkaline agent in the detergent composition of the present invention is preferably 40% by weight or less, more preferably 30% by weight or less. , More preferably not more than 20% by weight.
Most preferably, it is 0% by weight or less.

When the amine compound is used as the alkali agent used in the present invention, the content in the cleaning composition of the present invention is preferably from the viewpoint of improving the detergency.
It is preferably at least 0.5% by weight, more preferably at least 2% by weight, still more preferably at least 5% by weight, and most preferably at least 8% by weight. Further, from the viewpoint of handling safety, the content is preferably 40% by weight or less, more preferably 30% by weight or less, further preferably 20% by weight or less, and most preferably 15% by weight or less. preferable.

The content of the alkaline agent in the cleaning composition of the present invention is 0.5% by weight or more, preferably 1% by weight or more, from the viewpoint of improving the detergency.
The content is more preferably 2% by weight or more, particularly preferably 5% by weight or more, and from the viewpoint of handling safety, it is 40% by weight or less, preferably 30% by weight or less, and 20% by weight. %, More preferably 10% by weight or less.

In the present invention, a sulfonate type anionic surfactant, a sulfate ester type anionic surfactant, a phosphate ester type anionic surfactant, and an aromatic quaternary ammonium salt type cationic surfactant are used as the surfactant. Activator and average HLB (hydrophilic-lipophilic balance) of 4-18
At least one selected from the group consisting of nonionic surfactants is used.

One major feature of the present invention is that the surfactant is used in the detergent composition. As described above, since the surfactant is used, surprisingly, the reduction of the molecular weight and the releasability of the resinous soil due to the decomposition of the resinous soil attached to the plastic lens molding glass mold are dramatically increased, Further, since the re-adhesion of the peeled dirt is prevented, an excellent effect that the cleaning property is remarkably improved is exhibited.

Among the above surfactants, sulfonate type anionic surfactants are used from the viewpoints of uniformity of the detergent composition when using an alkaline agent at a high concentration, detergency and ease of rinsing after washing. Agents, sulfate ester type anionic surfactants and phosphate ester type anionic surfactants are preferred.

Representative examples of the sulfonate type anionic surfactant include, for example, an alkyl sulfonate having a linear or branched alkyl group having 10 to 20 carbon atoms; an alkenyl group having 10 to 20 carbon atoms. An alkenyl sulfonate having a straight-chain alkyl group or a branched alkyl group having 8 to 16 carbon atoms; an alkylnaphthalene sulfonic acid having a straight-chain or branched alkyl group having 2 to 6 carbon atoms salt;
Alkyl sulfosuccinic acid having a straight-chain alkyl group, branched alkyl group or cyclic alkyl group having 10 to 20 carbon atoms; alkenyl sulfosuccinate having an alkenyl group having 10 to 20 carbon atoms; straight-chain alkyl group having 6 to 18 carbon atoms Or an alkyldiphenyl ether disulfonate having a branched alkyl group; and an alkenyl diphenyl ether having an alkenyl group having 6 to 18 carbon atoms.

Representative examples of the above-mentioned sulfate ester type anionic surfactant include, for example, an alkyl sulfate having a linear or branched alkyl group having 10 to 20 carbon atoms; an alkenyl group having 10 to 20 carbon atoms. Alkenyl sulfate having a straight-chain or branched-chain alkyl group having 10 to 20 carbon atoms, and polyoxyethylene alkyl sulfate having an average addition mole number of ethylene oxide of 2 to 25.

Specific examples of the phosphate ester type anionic surfactant include, for example, alkyl phosphates having a linear or branched alkyl group having 1 to 20 carbon atoms; alkenyl having 1 to 20 carbon atoms. Alkenyl phosphate having a linear or branched alkyl group having 1 to 20 carbon atoms and having an average addition mole number of ethylene oxide of 2 to 25; Having an alkenyl group of 1 to 20 and an average addition mole number of ethylene oxide of 2 to 2
5 alkenyl ether phosphate and the like.

The above sulfonate type anionic surfactant,
Sulfate ester type anionic surfactant and phosphate S
Specific examples of the tellurium salt type anionic surfactant include, for example,
For example, sodium octyl sulfonate, (C_Ten~₁₈) Α-
Sodium olefin sulfonate, dodecylbenzenes
Sodium sulfonate, sodium butylnaphthalenesulfonate
Lithium; sodium di-2-ethylhexylsulfosuccinate
Sodium, dioctyl sodium sulfosuccinate, diisotri
Sodium decyl sulfosuccinate, dicyclohexyls
Sodium rusuccinate; octyl diphenyl ether
Sodium disulfonate, dodecyl diphenyl ether
Sodium disulfonate; lauryl sulfate ester
, Sodium tetradecyl sulfate, lauryl
Ammonium sulfate, lauryl sulfate tri
Ethanolamine; (POE)_Three~ _TenLauryl ether
Sodium sulfate, (POE)_Three~_TenLauryl ether sulfur
Triethanolamine acid (POE)_Two~_Ten(C
₁₂~₁₃) Synthetic alcohol ether sodium sulfate, (P
OE)₂₀~_{twenty five}Sodium oleyl ether sulfate, (PO
E) _Two~_TenOctyl phenol ether sodium sulfate
M, (POE)_Four~₁₈Nonylphenol ether sulfate
Thorium; sodium monolauryl phosphate,
Sodium nostearyl phosphate; mono (PO
E)₁Sodium ethyl phosphate, mono (PO
E)_Three~₈2-ethylhexyl phosphate sodium
Mu, Sesqui (POE)₁~_ThreeEthyl phosphate nato
Lium, sesqui (POE)_Three~₈2-ethylhexylli
Acid sodium ester, etc.
They also improve the cleaning performance of resinous stains,
It is preferable from the viewpoint of economy.

In this specification, “(POE)”
Indicates an ethylene oxide group, and a subscript at the lower right of (POE) indicates the number of moles of the ethylene oxide group added.
(POE) ₃ ~ ₆ monomethyl ether, ethylene oxide addition mole number is an abbreviation for compound 1-8.

Further, in the present specification, C 1 -C 18
Sometimes abbreviated as "(C ₁ ~ _18)" that is.

Further, as the alkaline agent, an inorganic type
Use a luka agent, and make sure that the detergent composition contains highly alkaline substances.
If it is a composition, ensure that the product uniformity and cleaning performance
From the viewpoint of exertion, the surfactant is octyldiph
Sodium phenyl ether disulfonate, dodecyl dif
Sodium enyl ether disulfonate, (POE) _Three
~_TenSodium lauryl ether sulfate, (POE)_Three~
_TenLauryl ether triethanolamine sulfate, (PO
E)_Two~_Ten(C₁₂~₁₃) Synthetic alcohol ether sulfate
Thorium, (POE)₂₀~_{twenty five}Oleyl ether sulfate nato
Lium, (POE)_Two~_TenOctyl phenol ether
Sodium sulfate, (POE)_Four~₁₈Nonylphenol
-Sodium tersulfate mono (POE)₁Ethyl phosphate
Stele sodium, mono (POE)_Three~₈2-ethylhe
Sodium xyl phosphate, sesqui (POE)₁
Sodium ethyl phosphate and sesqui (PO
E) _Three~₈2-ethylhexyl phosphate sodium
At least one member selected from the group consisting of
preferable.

Among the above-mentioned surfactants, from the viewpoint of improving the releasability by permeating the detergent composition into the interface between the molded glass mold and the resinous dirt and preventing the re-adhesion of the dirt removed, Formula (I):

[0050]

Embedded image

Wherein R ¹ is a hydrocarbon group having 8 to 20 carbon atoms, R ² and R ³ are each a hydrocarbon group having 1 to 3 carbon atoms, and X is a hydroxyl group or a halogen atom. Aromatic quaternary ammonium salt type cationic surfactants are preferred.

In the general formula (I), R ¹ is a hydrocarbon group having 8 to 20 carbon atoms.

In the general formula (I), R ² and R
³ is a hydrocarbon group having 1 to ³ carbon atoms.

X is a hydroxyl group or a halogen atom. Examples of the halogen atom include a chlorine atom, a bromine atom, and an iodine atom.

[0055] Among the aromatic quaternary ammonium salt type cationic surfactants are benzyl lauryl dimethyl ammonium chloride, benzalkonium chloride (C ₈ ~
C ₁₈ ) can be more preferably used from the viewpoints of cleaning performance, its durability, availability, and economy.

In the case where inorganic ions are present at a high concentration in the detergent composition, from the viewpoint of sufficiently exhibiting rinsing properties and detergency after washing, the above surfactants have an average H value.
Nonionic surfactants having an LB (hydrophilic-lipophilic balance) of 4 to 18 are preferred.

In this specification, HLB is G
This is calculated based on the riffin equation.

The average HLB of the nonionic surfactant is:
From the viewpoint of rinsing properties after washing when the inorganic ion component is present at a high concentration, it is 4 or more, preferably 8 or more, more preferably 10 or more, and still more preferably 11 or more. , From the viewpoint of detergency, 18
Or less, preferably 15 or less, more preferably 14 or less, and even more preferably 13 or less.

Specific examples of the nonionic surfactant having an average HLB of 4 to 18 include, for example, (POE) ₂ to
₃₇ (C ₁₂ ~ ₁₄₎ Synthesis alcohol ether, (POE) ₁
~ ₃₄ lauryl ether, (POE) ₂ ~ ₄₆ cetyl ether, (POE) ₂ ~ ₅₁ stearyl ether, (POE)
_2-51 oleyl ether, (POE) ₂ ~ ₃₈ octylphenyl ether, (POE) such as _2-41 nonylphenyl ether.

From the viewpoint of detergency, the content of the surfactant is 0.25% by weight or more, preferably 0.5% by weight or more, more preferably 1% by weight or more. 2% by weight is most preferred. In addition, from the viewpoint of handleability during use of the detergent, the content is 20% by weight or less, more preferably 15% by weight, and 8% by weight.
The content is more preferably not more than 6% by weight, and most preferably not more than 6% by weight.

The present invention also has one major feature in that a calcium ion releasing substance is used. Thus, in the present invention, the use of the calcium ion-releasing substance can prevent the molded glass mold from being corroded, and is excellent when used in combination with the alkali agent and the surfactant. In addition, excellent cleaning properties are exhibited, and excellent properties that the quality of the molded glass mold can be maintained are exhibited.

Representative examples of the calcium ion-releasing substance include, for example, inorganic calcium salts and organic calcium salts, and these can be used alone or in combination of two or more.

Specific examples of the inorganic calcium salts include, for example, calcium hydroxide, calcium chloride, calcium nitrate, calcium nitrite, calcium hypophosphite, calcium phosphate, calcium pyrophosphate, calcium tripolyphosphate, calcium polyphosphate and the like.

In the case where an inorganic acid calcium salt such as calcium hydroxide or calcium carbonate is used as the calcium ion releasing substance, for example, metallic calcium or calcium oxide is added to the cleaning composition of the present invention. It may be blended and, in it, reacted with water, an inorganic acid salt or the like, to form an inorganic acid calcium salt such as calcium hydroxide or calcium carbonate.

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. Organic calcium sulfate, organic calcium sulfonate, organic calcium phosphate and the like can be mentioned.

Specific examples of calcium linear alkylcarboxylate and calcium alkylenecarboxylate include, for example, calcium formate and calcium acetate.

Specific examples of the above-mentioned calcium aromatic carboxylate include, for example, calcium benzoate, calcium m-hydroxybenzoate, calcium p-hydroxybenzoate, calcium 2,3-dihydroxybenzoate,
Examples include calcium 5-dihydroxybenzoate, calcium α-resorcinate, calcium β-resorcinate, calcium γ-resorcinate, calcium protocatechuate, calcium gallate, calcium benzylate, and the like.

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.

Specific examples of the calcium polyvalent carboxylate include, for example, calcium oxalate, calcium L-aspartate, and the like.

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.

Specific examples of the above-mentioned organic calcium sulfate include calcium alkyl sulfate, calcium polyoxyethylene alkyl ether sulfate, and calcium polyoxyethylene alkyl phenyl ether sulfate.

Specific examples of the above-mentioned organic calcium sulfonate include, for example, calcium alkylbenzene sulfonate, calcium alkylnaphthalenesulfonate, calcium dialkylsulfosuccinate, calcium alkyldiphenylether disulfonate, calcium salt of β-naphthalenesulfonic acid formaldehyde condensate, etc. Is raised.

Specific examples of the above-mentioned organic calcium phosphate include, for example, calcium aminotri (methylene phosphonate), calcium 1-hydroxyethylidene-1,1-diphosphonate, calcium ethylenediaminetetra (methylene phosphonate), and diethylenetriaminepenta (methylene phosphonate). ) Calcium and the like.

The content (calcium ion equivalent) of the calcium ion releasing substance in the detergent composition of the present invention is 0.005 from the viewpoint of preventing glass corrosion.
% By weight or more, preferably 0.01% by weight or more, more preferably 0.05% by weight or more, particularly preferably 0.1% by weight or more, and product uniformity. From the viewpoint of 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.

The water is used as a solvent for uniformly dissolving the aromatic compound, the alkali agent and the calcium ion releasing substance, and as a solvent for promoting the alkali action of the alkali agent.

The type of the water is not particularly limited as long as the purpose of the cleaning composition of the present invention is not hindered. Representative examples of such water include, for example, ultrapure water,
Examples include pure water, ion-exchanged water, distilled water, and ordinary tap water.

The content of water in the cleaning composition of the present invention depends on the amount of the alkali agent, surfactant,
Calcium ion releasing substance, sequestering agent added as needed, the remainder of the additives and the like described below,
5% by weight or more, preferably 15% by weight or more, more preferably 5% by weight or more, from the viewpoint of sufficiently exhibiting the compatibility when each component of the cleaning composition of the present invention is blended and the effect of removing the resinous dirt possessed by the alkali agent. Is preferably 30% by weight or more, more preferably 50% by weight or more, and from the viewpoint of developing excellent detergency, 89% by weight or less, preferably 80% by weight or less, more preferably 70% by weight or less. , More preferably 60% by weight or less.

When the detergent composition of the present invention further contains a sequestering agent, the detergent composition has a long-lasting effect of detergency and glass corrosion prevention, alkali agent, surfactant and calcium ion release. Compatibility when blending a water-soluble substance and water and stability of a product can be improved.

The type of the sequestering agent is not particularly limited as long as it does not impair the effect of the detergent composition of the present invention. Those exhibiting a sequestering effect of metal ions are more preferably used.

Typical examples of the sequestering agents include:
For example, aminocarboxylic acid and its salt, phosphonic acid and its salt, oxycarboxylic acid and its salt, polyvalent carboxylic acid and its salt, aromatic carboxylic acid and its salt,
Examples thereof include hydroxybenzene, polyhydric alcohol, phosphoric acid and salts thereof, aminonaphtholsulfonic acid and salts thereof, and triethanolamine, but the present invention is not limited only to such examples. The sequestering agents may be used alone or in combination of two or more.

Specific examples of the aminocarboxylic acids and salts thereof include ethylenediaminetetraacetic acid, ethylenediaminediacetic acid, nitrilotriacetic acid, N-hydroxyethylenediamine-N, N ', N'-triacetic acid, diethylenetriaminepentaacetic acid, and the like. Triethylenetetramine hexaacetic acid, tetraethylenetetramine hexaacetic acid, hydroxyethyl iminodiacetic acid, N, N-di (2-hydroxyethyl) glycine, iminodiacetic acid, trans-1,2-cyclohexanediaminetetraacetic acid, alkali metals thereof Or lower amine salts.

Specific examples of the phosphonic acid and salts thereof include, for example, aminotri (methylenephosphonic acid),
-Hydroxyethylidene-1,1-diphosphonic acid, ethylenediaminetetra (methylenephosphonic acid), diethylenetriaminepenta (methylenephosphonic acid), and alkali metal or lower amine salts thereof.

Specific examples of the oxycarboxylic acids and salts thereof include glyoxylic acid, glycolic acid,
Lactic acid, gluconic acid, tartronic acid, malic acid, tartaric acid,
Examples thereof include citric acid, mucinic acid, and alkali metal or lower amine salts thereof.

Specific examples of the above-mentioned polycarboxylic acids and salts thereof include, for example, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, fumaric acid, maleic acid, diglycolic acid, L-asparagine Acids, their alkali metals or lower amine salts.

Specific examples of the aromatic carboxylic acids and salts thereof include, for example, m-hydroxybenzoic acid, p-hydroxybenzoic acid, 2,3-dihydroxybenzoic acid,
2,5-dihydroxybenzoic acid, α-resorcinic acid, β
-Resorcinic acid, γ-resorcinic acid, protocatechuic acid,
Gallic acid, tannic acid, 3,5-dinitrosalicylic acid,
Salicylic acid, alkali metal or lower amine salts thereof, and the like.

Specific examples of the hydroxybenzene include 2-hydroxyphenol, 3-hydroxyphenol, 2,3-dihydroxyphenol (pyrogallol), 3,5-dihydroxyphenol, hexahydroxycyclohexane, aminonaphthol and the like. Can be

Specific examples of the polyhydric alcohol include D-sorbitol, D-mannitol, dulcitol, D-arabinose, xylitol, gluconolactone, D-mannose, D-galactose and threitol.

Specific examples of the above-mentioned phosphoric acid and salts thereof include potassium pyrophosphate, potassium tripolyphosphate, potassium polyphosphate and the like.

The content of the above-mentioned sequestering agent in the detergent composition is not particularly limited, but the detergency and the compatibility of the above-mentioned alkaline agent, surfactant, calcium ion releasing substance and water are not limited. In view of the above, the content is 0.01% by weight or more, preferably 0.1% by weight or more, more preferably 0.1% by weight or more, and 0.1% by weight or more.
Particularly preferred is 5% by weight or more, and 1.5% by weight or more.
Is most preferred. Further, from the viewpoint of the glass corrosion preventing effect and the ease of handling during washing, the content of the sequestering agent in the detergent composition is 20% by weight or less, and preferably 10% by weight or less. , 8% by weight or less is particularly preferable,
Most preferably, it is at most 5% by weight.

The detergent composition of the present invention may contain, if necessary, an antifoaming agent such as a preservative, a rust preventive, or a silicone, as long as the effect of the present invention is not impaired.
Antioxidants, esters such as coconut fatty acid methyl and benzyl acetate, hydrocarbon solvents, and additives such as alcohols can be appropriately contained.

The detergent composition of the present invention can be produced by mixing an alkali agent, a surfactant, a calcium ion-releasing substance and water, and if necessary, a sequestering agent, an additive and the like by a conventional method. it can.

Raw materials for plastic lens molding, unreacted monomers, oligomers, polymers, components bleed out from gaskets, plasticizers, plasticizer molding materials adhered to the surface of the glass mold for plastic lens molding using the detergent composition of the present invention.
There is no particular limitation on the method for cleaning resinous dirt with a high molecular weight such as an adhesive or a pressure-sensitive adhesive derived from a tape for fixing a mold. For example, a dipping method using the cleaning composition of the present invention, immersion rocking Method, ultrasonic cleaning method, submerged jet method, spray method, hand wiping method, etc., followed by continuous rinsing with solvent, hot water, room temperature water, etc. And an efficient cleaning method. Further, the rinsing water is not particularly limited as long as it can remove contaminants on the surface.For example, ultrapure water, pure water, ion-exchanged water, distilled water, ordinary tap water, etc. may be used for rinsing. Is preferred.

The cleaning composition for a molded glass lens of the present invention thus obtained has excellent detergency against various resinous stains and has a property of not corroding the molded glass mold. A composition. Also,
Since the cleaning composition for a plastic lens molded glass mold of the present invention is a composition having high safety for the human body, it exhibits an excellent property of high safety for the human body during cleaning.

Next, the method for cleaning the glass mold of the present invention will be described.

The cleaning method of the present invention is characterized in that (A) a plastic lens molded glass mold is washed with the above-mentioned cleaning composition, and (B) the washed molded glass mold is rinsed with rinsing water. I do.

In the cleaning method of the present invention, since the above-mentioned cleaning composition is used, it is excellent in cleaning performance against high molecular weight resinous dirt and safety against the human body during cleaning, and does not corrode the molded glass mold. Various resinous stains can be washed.

The step (A) is a step of cleaning a plastic lens molded glass mold using the cleaning composition.

The method for cleaning a plastic lens molded glass mold using the cleaning composition is not particularly limited.
A commonly used known method can be used. Examples of such a washing method include washing methods such as an immersion method, an immersion rocking method, an ultrasonic cleaning method, a spray method, and a hand wiping method. The cleaning conditions such as the temperature of the cleaning composition and the cleaning time are not particularly limited.

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

In the step (B), the molded glass mold washed with the detergent composition 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 the like. Tap water or the like is preferable from the viewpoint of ease of rinsing. Also, the rinsing method is not particularly limited, and the same method as the cleaning method in step (A) can be used. There is no particular limitation on the rinsing condition.

In the cleaning method using the cleaning composition for a plastic lens molded glass mold of the present invention, a component which causes decomposition and dissolution of resinous soil and the like and a component which causes peeling of resinous soil and the like are simultaneously prepared. This is a simple cleaning method in which a single cleaning tank can be used to clean resinous dirt and the like because it is contained in an object.

Further, since the cleaning method using the cleaning composition for a plastic lens molded glass mold of the present invention uses a cleaning composition having high safety for the human body, the safety for the human body during cleaning is low. An excellent effect of being high is exhibited.

[0104]

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 1 [Production of sodium sesqui (POE) ₁ ethyl phosphate ester] 90 parts by weight of ethylene glycol monoethyl ether was charged into a reaction vessel, and 47 parts by weight of phosphorus pentoxide was gradually added at 45 ° C. After the addition was completed, the mixture was stirred at 45 to 50 ° C for 3 hours. 40 parts by weight of sodium hydroxide (flakes) were gradually added to a separate kettle in which 88 parts by weight of water were dissolved,
Neutralization was performed as follows to obtain sodium sesqui (POE) ₁ ethyl phosphate.

Production Example 2 [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 stainless steel tray with a lid, 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 for ADC resinous 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, and further heating at 180 ° C. for 5 hours, polymerization and solidification were performed to obtain a test piece for a cleaning test for urethane resinous dirt.

(3) Manufacture 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.

Examples 1 to 24 and Comparative Examples 1 to 13 Various cleaning compositions having the compositions shown in Tables 1 to 8 (composition ratio units are% by weight) were prepared, and these cleaning compositions were used.
A cleaning test and a glass corrosion test were performed on the ADC resinous soil and urethane resinous soil.

The compositions of the various cleaning compositions of Examples 1 to 24 are shown in Tables 1 to 5, and the compositions of the various cleaning compositions of Comparative Examples 1 to 13 are shown in Tables 6 to 8.

[0112]

[Table 1]

[0113]

[Table 2]

[0114]

[Table 3]

[0115]

[Table 4]

[0116]

[Table 5]

[0117]

[Table 6]

[0118]

[Table 7]

[0119]

[Table 8]

The methods of the cleaning test and the glass corrosion test and the evaluation criteria are shown below. [Cleaning Test] A test piece for a cleaning test for the ADC resinous dirt and urethane resinous dirt was immersed in a detergent composition maintained at 60 ° C. and subjected to 39 kHz and 200 Watts.
Ultrasonic cleaning equipment (Sharp Corp., trade name: SIL)
Wash with ENTSONIC UT-204) for 100 seconds.

Then, it is immersed in ion-exchanged water at 30 ° C.
Rinse for 50 seconds with the same ultrasonic cleaning device as the cleaning (first rinsing). Further, similarly, it is 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) Dry at 80 ° C for 10 minutes.

In Comparative Examples 9 and 10, as a cleaning composition containing methylene chloride, the cleaning was performed in a single tank at a cleaning temperature of 35 ° C. (boiling point: 40.2 ° C.) for 100 seconds. Then, it is immersed in methylene chloride (room temperature), rinsed for 50 seconds using the above-mentioned ultrasonic cleaning device (first rinsing), further immersed in ion-exchanged water at 30 ° C., and immersed in the ultrasonic cleaning device for 50 seconds. Finish rinse (second rinse). Thereafter, air is blown for 50 seconds, and dried at 80 ° C. for 10 minutes using a blower constant temperature dryer (trade name: FV-630, manufactured by Toyo Seisakusho Co., Ltd.).

For each cleaning composition, under the above conditions,
Five test pieces for cleaning test of ADC resinous dirt and urethane resinous dirt were washed, and each of them was washed with a total of 5 pieces.
The cleaning rate for each resinous soil is determined from the change in the weight of the test piece before and after cleaning, and the average value is taken as the cleaning rate (%).

[Glass Corrosion Test] Each of the chemically reinforced glass test pieces for glass corrosion test described above is immersed in a detergent composition kept at 80 ° C. for 24 hours. The test piece taken out of the detergent composition is thoroughly rinsed with clean ion-exchanged water, and then air blown for one minute and air-dried indoors.

In Comparative Examples 9 and 10, the chemically reinforced glass test pieces for the glass corrosion test were immersed in a cleaning composition containing methylene chloride kept at 35 ° C. for 24 hours. After thoroughly rinsing the test piece taken out of the detergent composition with clean ion-exchanged water,
Air blow for a minute and air dry indoors.

The glass corrosion test was carried out by weight reduction (%) and visual judgment.

[0127] The weight loss rate was determined for each detergent composition.
Under the above conditions, five test pieces are processed, melted by glass corrosion, and the ratio of the weight phenomenon is calculated from the weight change of the test pieces before and after the processing, and the average value is calculated. In addition, visual judgment is performed under the same conditions,
Five test pieces were processed, and the state of the glass surface after the processing was visually determined. The criterion at that time is as follows.

[Evaluation Criteria for Visual Judgment] ○: No change ご: Very slight, partial whitening Δ: Partly whitening ×: Overall whitening The above results are shown in Tables 9 to 13.

[0129]

[Table 9]

[0130]

[Table 10]

[0131]

[Table 11]

[0132]

[Table 12]

[0133]

[Table 13]

From the results shown in Tables 9 to 12, Example 1 was obtained.
The cleaning compositions obtained in Comparative Examples 1 to 24 are superior to the cleaning compositions of Comparative Examples 1 to 8 in both the cleaning rate for ADC resinous dirt and urethane resinous dirt, and the evaluation for a glass corrosion test. It turns out that it is a thing.

Further, based on the results shown in Tables 9 to 11 and Table 13, the cleaning compositions obtained in Examples 1 to 24 showed that It can be seen that all of them are excellent in the cleaning rate for the ADC resinous soil and the urethane resinous soil, and in the evaluation for the glass corrosion test.

Therefore, since the cleaning methods in Examples 1 to 24 use the cleaning composition of the present invention, they exhibit excellent cleaning power without deteriorating the quality of glass as compared with conventional cleaning methods. You can see that.

[0137]

The cleaning composition for a plastic lens molded glass mold of the present invention has excellent detergency against various resinous stains and exhibits excellent properties of not corroding glass. It is. Further, since the cleaning composition of the present invention is highly safe for the human body, it exhibits an excellent property of being highly safe for the human body during cleaning.

Further, according to the cleaning method of the present invention, a cleaning composition is used which simultaneously contains a component which causes decomposition and dissolution of resinous soil and the like and a component which causes peeling of resinous soil and the like. Therefore, an excellent effect of easily cleaning resinous dirt and the like using one cleaning tank is exhibited. In addition, since the cleaning composition used in the cleaning method of the present invention has high safety 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.

Claims (7)

[Claims] (1) (a) 0.5 to 40% by weight of an alkali agent,
(B) Sulfonate type anionic surfactant, sulfate ester type anionic surfactant, phosphate ester type anionic surfactant, aromatic quaternary ammonium salt type cationic surfactant and average HLB (hydrophilic lipophilicity) 0.25 to 20% by weight of at least one surfactant selected from the group consisting of 4 to 18 nonionic surfactants, and (c) 0.005 to 5% of a calcium ion-releasing substance.
A cleaning composition for a plastic lens molded glass mold containing 15% by weight (calcium ion equivalent) and the balance water. 2. The cleaning composition according to claim 1, further comprising (e) a sequestering agent. 3. The method according to claim 1, wherein the alkaline agent is at least one selected from the group consisting of an inorganic alkaline agent and an organic alkaline agent.
3. The cleaning composition according to claim 1, which is a seed. 4. The cleaning composition 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. 5. 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, 5. The at least one quaternary ammonium compound selected from the group consisting of quaternary ammonium compounds.
The cleaning composition according to the above. 6. The calcium ion releasing substance is calcium hydroxide, calcium carbonate, inorganic acid calcium salt, linear alkyl calcium carboxylate, calcium alkylene carboxylate, calcium aromatic carboxylate, calcium oxycarboxylate, polyvalent carboxylate. The cleaning composition according to any one of claims 1 to 5, wherein the cleaning composition is at least one selected from the group consisting of calcium acid, calcium aminocarboxylate, organic calcium sulfate, organic calcium sulfonate, and organic calcium phosphate. 7. A plastic lens molded glass mold is washed with the cleaning composition according to claim 1, and (B) the rinsed molded glass mold is rinsed with rinsing water. A method for cleaning a plastic lens molded glass mold, characterized in that: