WO2006019175A1 - 防曇性被膜形成用光硬化型組成物 - Google Patents
防曇性被膜形成用光硬化型組成物 Download PDFInfo
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- WO2006019175A1 WO2006019175A1 PCT/JP2005/015303 JP2005015303W WO2006019175A1 WO 2006019175 A1 WO2006019175 A1 WO 2006019175A1 JP 2005015303 W JP2005015303 W JP 2005015303W WO 2006019175 A1 WO2006019175 A1 WO 2006019175A1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
Definitions
- the present invention can impart excellent anti-fogging properties to the surface of a substrate such as plastic, glass, metal, etc. over a long period of time, and can form a film excellent in strength, adhesion and surface curability.
- the present invention relates to a method for forming an antifogging film, wherein the photocurable composition for forming a haze film is used.
- Plastic molded products made of polycarbonate resin, attaryl resin, etc. are used in many fields because of their excellent transparency and easy processing, but when their surface temperature falls below the dew point temperature, There is a problem that transparency becomes lost due to condensation and cloudiness of water as fine water droplets. Conventionally, various studies have been made to make the surfaces of these molded articles hydrophilic, thereby imparting antifogging properties to the surfaces and developing antistatic properties and the like.
- a method for forming an antifogging film on the surface of a base material has been conventionally known. From the viewpoint of workability, a photocuring type for forming an antifogging film that forms a cured film by irradiation with light such as ultraviolet rays.
- Various compositions have been proposed. For example, Japanese Laid-Open Patent Publication Nos. 6-136-6165 and Japanese Laid-Open Patent Publication No. 2 0 0 1-1 9 8 74 4 disclose an antibacterial agent containing polyethylene dallic acrylate, a surfactant, and a photopolymerization initiator. A clouding agent is disclosed, and Japanese Patent Application Laid-Open No.
- 11-140.010 has at least two hydroxyl groups and at least two (meth) acryloyl groups in the molecule.
- An antifogging composition containing attalylate and a reactive surfactant is disclosed.
- Japanese Patent Application Laid-Open No. 2000-103-143 discloses that antifogging containing a (meth) acrylamide compound, a urethane polymer, a polyalkylene glycol acrylate and a photopolymerization initiator.
- An agent composition is disclosed.
- radically polymerizable photocuring such as (meth) atallyloyl group-containing compounds
- a composition containing a mold component forms a cured coating by irradiation with light such as ultraviolet rays
- the coating surface is likely to be inhibited from curing by oxygen present in the irradiation atmosphere.
- a large amount of photopolymerization initiator is used, and light irradiation is performed with a high-power lamp.
- JP 2 0 0 3-5 1 5 4 4 5 thus, methods such as light irradiation in the presence of an inert gas have been proposed.
- the composition has poor adhesion to the substrate surface, and the film formed from the composition described in Japanese Patent Application Laid-Open No. 2000-123-43 has a certain degree of anti-fogging durability.
- anti-fogging property and adhesion are deteriorated when exposed to high temperature conditions during use, such as automobile headlights, and humid conditions due to rain.
- the main purpose of the present invention is excellent in anti-fogging property, adhesion, transparency, surface curing property, scratch resistance, etc., and in high temperature conditions during use such as automobile headlights and in humid conditions due to rainfall.
- a photocurable composition for forming an antifogging film and a method for forming an antifogging film which can form a film that is retained without being deteriorated in antifogging property or adhesion property even when exposed to a long period of time. Is to provide.
- the present invention is a.
- the present invention also provides a method for forming an antifogging film, characterized in that the above-mentioned photocurable composition for forming an antifogging film is applied to a substrate surface and then irradiated with light. .
- the surface of the substrate is excellent in antifogging property, adhesion, transparency, surface curability, scratch resistance, etc., and even when exposed to high temperature and high humidity for a long period of time, it is antifogging.
- a remarkable effect can be obtained, such as the formation of a long-lasting antifogging film that can be maintained without deteriorating the adhesion and the like.
- the urethane compound (A) used in the composition of the present invention contains at least two, preferably two (meth) acryloyl groups and a polyoxyalkylene chain in one molecule. It is.
- polyoxyalkylene chain examples include a polyoxyethylene chain, a polyoxypropylene chain, and a polypropylene copolymer chain of polyoxyethylene and polyoxypropylene.
- the polyoxyalkylene chain is generally in the range of 300 to 20000, particularly 350 to 10000, more particularly 400 to 4000, in view of the balance between the effect as a hydrophilic group and the coating film performance (particularly water resistance). It is preferred to have a number average molecular weight.
- the urethane compound (A) can be used without particular limitation as long as it contains at least two (meth) acryloyl groups and a polyoxyalkylene chain in one molecule.
- Cyanate compound (a-1) and polyal A reaction product of xylene glycol (a — 2) and a compound (a-3) containing a hydroxyl group and a (meth) ataryloyl group is preferred.
- the polyisocyanate compound (a-l) is a compound containing at least two isocyanate groups in one molecule. Specifically, for example, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, Aliphatic polyisocyanates such as dimer acid diisocyanate, lysine diisocyanate, burette-type adducts of these polyisocyanates, isocyanurate ring adducts; isophorone diisocyanate, 4,4'-methylenebis (Cyclohexyl isocyanate), Methylcyclohexane 1,2,4- or 1,2,6-Diisocyanate, 1,3- or 1,4-Di (isocyanatomethyl) cyclohexane, 1,4-Cyclohexane Hexane diisocyanate, 1,3-cyclopentane diisocyanate, 1,2-cyclohexane Alicyclic diisocyanates such as diis
- polyalkylene glycol (a-2) examples include polyethylene darconol, polypropylene glycolol, polyethylene polypropylene glycolol, and the like. These are generally 3 0 0 to 2 0 0 0 0 0, preferably 3 5 0 to 1 It can have a number average molecular weight in the range of 400, more preferably in the range of 400-400.
- the polyalkylene glycol (a-2) may be used in combination with a low molecular weight polyol other than the polyalkylene glycol, such as 1,6-hexanediol, trimethylolpropane, etc., as long as the hydrophilicity is not impaired.
- the compound (a_3) containing a hydroxyl group and a (meth) acryloyl group includes a compound having one hydroxyl group and one polymerizable unsaturated group in one molecule.
- C 2 to C 8 t droxyl kills such as 2- hydroxypropyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate (Meth) atalylate, having a hydroxyl group such as an ⁇ -force prolatatone modified product of C 2 -C 8 hydroxyalkyl (meth) atalylate, polyoxy having a molecular end as a hydroxyl group
- Examples include (meth) acrylates having an ethylene chain, and these can be used alone or in combination of two or more.
- (meth) acryloyl means “attalyloyl or methacryloyl”
- (meth) acrylate means “attalylate or metatalylate”.
- the reaction product of the polyisocyanate compound (a-1), the polyalkyleneglycolanol (a-12), and the compound (a-3) containing a hydroxyl group and a (meth) atallyloyl group is a known method per se.
- a polyisocyanate compound (a-1), a polyalkylene glycol (a-2), a compound containing a hydroxyl group and a (meth) attalyloyl group (a-3) are mixed together and reacted.
- a polyisocyanate compound (a_l) and a polyalkylene glycol (a-2) were reacted to form a urethane isocyanate prepolymer containing at least one isocyanate group per molecule.
- polyalkylene glycol (a-2) When polyalkylene glycol ( a -2) is used in combination with a low molecular weight polyol, the same as above. Reaction can be carried out.
- the reaction ratio of the polyisocyanate compound (a-1), polyalkylene glycol (a-2), and the compound (a-3) containing a hydroxyl group and a (meth) attalyloyl group is desired for the urethane compound (A). It can be changed according to the number of (meth) atallyloyl groups. For example, when a compound (A) containing two (meth) acryloyl groups is desired, it contains a hydroxyl group and a (meth) atalyloyl group.
- the polyalkylene glycol (a-2) or a mixture of this and a low molecular weight polyol is used in an amount of 1 to 15 mol, preferably 1 to 5 mol, relative to 2 mol of the compound (a-3)
- the nate compound (a-l) can be reacted in a range of 2 to 16 mol, preferably 2 to 5 mol.
- a urethanization catalyst such as an organic tin compound or a polymerization inhibitor such as hydroquinone can be used.
- the reaction can usually be carried out at a temperature of about 6 ° to about 100 ° C.
- the urethane compound (A) generally has a weight average molecular weight in the range of 800 to 30000, preferably 900 to 18000, more preferably 1 000 to 6000, from the viewpoint of coating performance such as antifogging property and water resistance. It is desirable to have In this specification, the weight average molecular weight is based on the weight average molecular weight of polystyrene as measured by gel permeation chromatography using tetrahydrofuran as a solvent at a flow rate of 1. Om 1 Zmin. This is the value when converted.
- HLC 8 1 20GPC (trade name, manufactured by Tosoichi Co., Ltd.) can be used as a gel permeation chromatography device, and as a column used for gel permeation chromatography.
- TKg el G_4000HXL “TSKg el G—300 OHXL”
- TKg el G—2500HXL TKg el G_2000HXL” (both manufactured by Tosoh Corporation) You can.
- the compound (B) having at least 2, preferably 2 (meth) acryloyl groups and at least 2 hydroxyl groups in one molecule used in the composition of the present invention is an epoxy compound (b-1) and It can be obtained by reacting at least two components with (meth) acrylic acid (b-2).
- the epoxy compound (b-1) includes a compound containing at least 2, preferably 2 epoxy groups in one molecule.
- epoxy compounds (b-1) can usually have a number average molecular weight in the range of 100 to 5000, preferably 200 to 1000.
- epoxy compound (b-1) and (meth) acrylic acid (b-2), as a raw material for producing compound (B), a polyvalent carboxylic acid (b — 3) can also be used.
- the polyvalent carboxylic acid (b-3) include succinic acid, adipic acid, suberic acid, azelaic acid, and sepacic acid.
- Phthalic acid isophthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, maleic acid, fumaric acid, trimellitic acid, citrate, malic acid, etc.
- the reaction between the epoxy compound (b_l) and (meth) acrylic acid (b-2) and the polyvalent carboxylic acid (b-3) used as necessary is not particularly limited and is a method known per se.
- the epoxy compound (b-1) and (meth) acrylic acid (b-2), and if necessary, the polyvalent carboxylic acid (b-3) Mixing and heating and stirring at a temperature of about 60 to about 140 ° C. in the presence of a catalyst.
- an organic solvent it is preferable to remove the solvent by distillation under reduced pressure after the reaction.
- examples of the organic solvent include benzene, toluene, xylene, cyclohexane, butyl acetate, methyl ethyl ketone, and methyl isobutyl ketone.
- examples of the catalyst include tertiary amines such as N, N-dimethylbenzylamine, triethylamine, N, N-dimethylaniline, tetrajetyl ammonium chloride, and tetrabutynoleammonum mouthpiece.
- Quaternary ammonium salts such as benzinotrimethyl ammonium chloride; secondary amine hydrochlorides such as dimethylamine hydrochloride and jetylamine hydrochloride; triphenylphosphine Examples thereof include phosphorus compounds such as fins.
- the above reaction can be carried out in the presence of a polymerization inhibitor such as a hard mouth quinone, if necessary.
- the reaction ratio of the epoxy compound (b-1), (meth) acrylic acid (b 1-2) and polyvalent carboxylic acid (b-3) is the desired (meth) atallyloyl group for the compound (B).
- the reaction ratio between the epoxy compound (b-1) and (meth) acrylic acid (b-2) is 2 mol of (meth) acrylic acid (b-2).
- the epoxy compound (b-l) can be in the range of 0.8 to 1.2 mol, preferably 0.9 to 1.1 mol, and the polyvalent carboxylic acid (b-3) .) And a compound (B) containing two (meth) atallyloyl groups, (Meth) acrylic acid (b-2)
- the amount of epoxy compound is 1.8 to 2.2 mol, preferably 1.9 to 2.1 mol, and polycarboxylic acid
- the amount can be within the range of 0.8 to 1.2 mol, preferably 0.9 to 1.1 mol.
- Compound (B) usually has a hydroxyl value in the range of 500 to 500 mg KOH / g, preferably 60 to 48 mg KOH / g, more preferably 80 to 45 Omg KOHZg, And may have a weight average molecular weight in the range of 2500 to 10:00, preferably 30000 to 80000, more preferably 40000 to 50000.
- the compound (C) having an ethylenically unsaturated group used in the present invention includes the above (A) and ( B) Compounds having at least one ethylenically unsaturated group in one molecule other than the component are included.
- the ethylenically unsaturated group include a (meth) acryloyl group, a allyl group, a bur group, and the like, and a (meth) acryloyl group is particularly preferable.
- the above-mentioned compound (C) component Obtained by reacting a polyisocyanate compound (c 1 1) with a hydrophobic polyol (c 1 2) and a compound containing a hydroxyl group and a (meth) attalyloyl group (c 1 3). It is preferable to use a urethane compound (C-1).
- the urethane compound (C 1 1) preferably contains at least 2, preferably 2 (meth) acryloyl groups in one molecule.
- polyisocyanate compound (c-1) and the compound (c1-3) containing a hydroxyl group and a (meth) acryloyl group the polyisocyanate compounds listed in the description of the urethane compound (A), respectively.
- the compound (a_l) and the compound (a-3) containing a hydroxyl group and a (meth) acryloyl group can be appropriately selected for use.
- hydrophobic polyol (c-2) examples include polyester polyols, polyoletolene glycols other than polyester polyolene glycols, polycarbonate polyols, and silicone polyols. These can be used alone or in combination of two or more. Of these, polyester polyols are preferred, and polyesterdiols are particularly preferred from the viewpoint of reaction control.
- the polyester polyol can be obtained by a reaction between a polyhydric alcohol and a polyhydric strong sulfonic acid or a reaction between a polyhydric alcohol and a cyclic ester compound.
- polyhydric alcohol examples include, for example, ethylene glycol mononore, 1,2-propylene glycolenole, 1,3-propylene glycolenole, 1,4-butanediol, 1,3-butanediol, 1,4-butenediol.
- examples of the polyvalent carboxylic acid include ⁇ click acid, adipic acid, suberic acid, Azerain acid, sebacic acid, phthalic acid, isophthalic acid, phthalic acid anhydride, Tet Lahydrophthalic anhydride, hexahydrophthalic anhydride, tetrachlorophthalic anhydride,
- the above polyester polyol is generally used in terms of antifogging properties and water resistance.
- weight average molecular weight in the range of 0-10000, especially 350-6500, more particularly 500-3000.
- the urethane compound (C-11) can be produced in the same manner as the urethane compound ( ⁇ ) described above.
- the reaction ratio of each component at that time can be changed according to the number of (meth) acryloyl groups desired for the urethane compound (C-1).
- a urethane compound containing two (meth) atallyloyl groups In the case of producing (C1-1), a compound containing a hydroxyl group and a (meth) acryloyl group (c-13) is 2 to 15 moles of a hydrophobic polyol (c-2), Preferably, it is within the range of 1 to 10 mol, and the polyisocyanate compound (c-1) force is within the range of 2 to 16 mol, preferably within the range of 2 to 11 mol.
- the urethane compound (C-1) generally has a weight average molecular weight within the range of 60 0 to 1 1000, preferably 800 to 7500, more preferably 1000 to 4000 from the viewpoint of antifogging property and water resistance. It is desirable.
- the compound (C) in addition to the urethane compound (C-11), for example, a mono (meth) acrylate compound or a poly (meth) acrylate compound, and further, styrene, butyltoluene, Biacetate acetate, butyl chloride, allylic alcohol and the like can also be used, and mono- (meth) acrylate compounds or poly- (meth) acrylate compounds are particularly suitable.
- Examples of the mono (meth) acrylate compound include tetrahydrofurfuryl (meth) acrylate, alitaroyl morpholine, isobornyl (meth) acrylate, phenoxychetyl (meth) acrylate, phenoxy ethoxyethyl (meth) acrylate, Noyulfenochetir (Meta) Arc Hydroxychetyl (meth) acrylate, Hydroxypropyl (meth) acrylate, Hydroxyalkyl (meth) acrylate, such as Atyllate; Polyethylene glycol monohydroxy mono (meth) acrylate, polypropylene Polyalkylene glycol monohydroxymono (meth) acrylate such as glycol monohydroxymono (meth) acrylate; Polypropylene darico-noresi (meth) acrylate, Hydroxy succinyl (meth) Succinate adduct of hydroxy acrylate, Hydroxypropyl (Meth)
- G or poly (meth) acrylate compound examples include, for example, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, dipropylene glycol 2 such as di (meth) acrylate of ethylene oxide or propylene oxide adducts such as noresi (meth) acrylate, tripropylene glycol di (meth) acrylate, tetrapropylene glycol di (meth) acrylate Monomers having (meth) atallyloyl groups; trimethylolpropane tri (meth) acrylate, tetramethylol methane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, glycerin
- Examples include polyalkylene glycol (meth) acrylate, such as a monomer having three (meth) acryloyl groups in which ethylene oxide or propylene oxide is added
- the photopolymerization initiator (D) used in the composition of the present invention is not particularly limited as long as it is activated by ultraviolet light and / or visible light, etc., and a known one can be used. More specifically, for example, 1-hydroxycyclohexenorephenenoleketone, 2-hydroxy-2-methynole 1-fenenorepronone
- the photocurable composition for forming an antifogging film of the present invention can be prepared by mixing the compound (A), the compound (B) and the compound (C) described above by a conventional method.
- the compounding ratio of compound (A), compound (B) and compound (C) at that time can generally ensure long-term antifogging property and adhesion even under high temperature and humidity environment.
- the following ranges are preferred based on the total solid weight of compound (A), compound (B) and compound (C).
- Compound (A) 10 to 90% by weight, especially 15 to 80% by weight, more particularly 20 to
- Compound (B) 5 to 85% by weight, particularly 10 to 70% by weight, more particularly 10 to 6%
- Compound (C) 5 to 85% by weight, especially 10 to 75% by weight, more particularly 20 to 7
- the blending amount In general, from the viewpoint of long-term water resistance and antifogging properties, it is generally 5 to 70% by weight, particularly 5 to 50%, based on the total solid weight of compound (A), compound (B) and compound (C). It is desirable to be in the range of wt%, more particularly in the range of 10-50 wt%.
- the blending amount of the photopolymerization initiator (D) is 0.1 to 20 parts by weight, particularly 0 to 100 parts by weight of the total solid content of the compound (A), the compound (B) and the compound (C). 5 to 10 parts by weight, more preferably 1 to 8 parts by weight.
- a surfactant can be blended if necessary.
- the surfactant at least one selected from nonionic surfactants, cation surfactants, cationic surfactants, and the like can be used. Of these, nonionic surfactants and cation surfactants are preferred from the standpoint of sustaining the antifogging effect. These surfactants may be reactive surfactants having an unsaturated group.
- nonionic surfactant examples include polyoxyethylene lauryl alcohol, polyoxyethylene lauryl etherol, polyoxyethylene higher alcohol ethers such as polyoxyethylene vinyl ether; polyoxyethylene octylphenol, polyoxyethylene nonyl Polyoxyethylene alkyl ethers such as phenol; Polyoxyethylene acyl esters such as polyoxyethylene glycol monostearate; Polypropylene glycol ethylene oxide adduct, Polyoxyethylene sorbitan monolaurate, Polyo Polyoxyethylene sorbitan fatty acid esters such as xylethylene sorbitan monostearate; alkyl phosphate ester, polyoxyethylene alkyl ether telluride Phosphoric acid esters such as esters, sugar S. ethers, cellulose ethers, polyether (polyoxyethylene) modified recone oil and the like.
- anionic surfactants include, for example, fatty acid salts such as sodium oleate and potassium oleate; higher alcohol sulfates such as sodium lauryl sulfate and ammonium lauryl sulfate; sodium dodecylbenzenesulfonate and sodium alkylnaphthalenesulfonate Polyoxyethylene sulfate salts such as sodium alkylbenzene sulfonate and alkylnaphthalene sulfonate; formalin condensate of naphthalene sulfonate, dialkyl sulfosuccinate, dialkyl phosphate, polyoxyethylene alkyl phenyl ether sulfate, etc. Etc.
- fatty acid salts such as sodium oleate and potassium oleate
- higher alcohol sulfates such as sodium lauryl sulfate and ammonium lauryl sulfate
- cationic surfactants include ethanolamines, laurylamine acetate, triethanolamine monoformate, stearamide ethyl ester.
- Amine salts such as tyramine acetate; lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, dilauryldimethylammonium chloride, distearyldimethylammonium chloride, lauryldimethylbenzylammonium chloride, stearyldimethyl
- Examples include quaternary ammonium salts such as benzylamine chloride.
- the amount of the surfactant is generally 0.1% relative to 100 parts by weight of the total solid content of the compound (A), the compound (B) and the compound (C). It can be in the range of ⁇ 30 parts by weight, preferably 0.15 to 20 parts by weight, more preferably 0.2 to 10 parts by weight.
- the composition of the present invention may further contain a rheology control agent.
- a rheology control agent those known per se can be used without particular limitation, and examples thereof include at least one selected from organic fine particles and inorganic fine particles.
- the organic fine particles include finely divided resin particles such as polymer beads known per se and polymers of the above monomers, and gelled polymer fine particles (for example, Japanese Patent Laid-open No. 3-667770). Can be used.
- the inorganic fine particles for example, colloidal silica can be used, for example, colloidal silica or amorphous oxide particles such as alumina or inorganic oxide particles such as alumina. It can be used suitably.
- Colloidal silica is a sol in which colloidal particles of silica are dispersed in an organic solvent such as methyl alcohol, ethyl alcohol, ⁇ -propyl alcohol, isopropyl alcohol, methyl isobutyl ketone, methyl ethyl ketone, and water. Any of these structures may be used. Further, silica having some surface modification, for example, surface modification with a silane coupling agent can be used.
- silane coupling agent examples include methyltrimethoxysilane, dimethyldimethoxysilane, methyltriethoxysilane, dimethyljetoxysilane, vinyltrimethoxysilane, y-acryloyloxypropyltrimethoxysilane, and T-methacryloyloxypropyltrimethylsilane.
- the amount of the above-mentioned rheology control agent is about 100 parts by weight of the total solid content of the compound (A), the compound (B) and the compound (C) from the viewpoint of coating workability and finish.
- composition of the present invention may further contain a photosensitizer, a surface conditioner, an antioxidant, an ultraviolet absorber, an organic solvent, and the like.
- Antifogging film forming method
- an antifogging film is formed on the surface of a substrate by applying the photocurable composition for forming an antifogging film obtained as described above to a substrate surface and then irradiating with light. It can be shown.
- the substrate to which the composition of the present invention can be applied is not particularly limited, and examples thereof include plastic materials such as polycarbonate, polyacrylate, and polymethalate; glass and metal.
- the composition of the present invention can be applied to the substrate surface by a method known per se, for example, by spray coating, flow coating, roll coating, bar coating, date coating, or the like. .
- the substrate surface to which the composition is applied may be pre-heated at a temperature of about 60 to about 120 ° C. for about 10 to 10 minutes, if necessary.
- the thickness of the coating film is not particularly limited and can be changed according to the use of the coated article to be obtained. Usually, the dry (cured) film thickness is 1 to 15 ⁇ m, preferably 3 Can be in the range of ⁇ 10 ⁇ m.
- the coating film is irradiated with light and cured to form an antifogging film.
- the light to be irradiated include ultraviolet light and visible light, and in particular, light containing light having a wavelength in the range of 200 nm to 500 nm is preferably used.
- the irradiation light source for example, a high pressure mercury lamp, an ultra high pressure mercury lamp, a xenon lamp, a carbon arc, a halogen lamp, a metal halide lamp, sunlight, or the like can be used.
- the amount of light irradiation depends on the type of the photocurable composition used and the thickness of the coating film, but it is usually 1 OZOOO mj Z cm 2 in terms of the integrated light quantity, especially 1 00 to 15 500 mj Z cm 2 , more particularly in the range of 100 to 100 mJ cm 2 is suitable.
- the above light irradiation can be performed in the air, or can be performed in a carbon dioxide atmosphere.
- the radically polymerizable (meth) acryloyl group-containing compound present on or near the coating film surface is not subject to curing inhibition by oxygen, and surface curability, particularly friction. It is possible to form a cured surface with extremely excellent resistance to rubbing (scratch resistance).
- a method of performing light irradiation in a carbon dioxide atmosphere for example, carbon dioxide gas is introduced into the container, or dry ice is placed on the bottom of the container to generate carbon dioxide, thereby reducing the air in the container.
- An example is a method in which a substrate on which a coating film has been formed is placed in a container and irradiated with light after being replaced with carbon dioxide.
- the irradiation source can be irradiated with light by installing it inside or on the top of the container, or when the container is made of a material that transmits ultraviolet light or visible light, such as quartz glass.
- the oxygen content in the carbon dioxide atmosphere is preferably 15% by volume or less, particularly preferably 10% by volume or less, with respect to the total gas volume in the atmosphere, from the viewpoint of preventing curing inhibition.
- Example 2 it is possible to obtain a coated article formed with an antifogging film, for example, headlamp force noichi, gog nore, henomet face seal, red antifog, mirror, lens and the like.
- an antifogging film for example, headlamp force noichi, gog nore, henomet face seal, red antifog, mirror, lens and the like.
- Polyethylene glycol diglycidyl ether having a molecular weight of about 400 g, 200 g of acrylic acid, 72 g (1 mol) of acrylic acid, 1.36 g of tetraptylammonium bromide and 0.5 g of hydroquinone are placed in a reaction vessel and air Was allowed to react at 110 ° C. for 8 hours while blowing, to obtain a compound (B 1 1) having an acryloyl group at both ends of one molecule.
- Nonion E—21 5 Nonionic surfactant, manufactured by NOF Corporation
- each of the coating compositions of Examples and Comparative Examples obtained above was diluted with propylene glycol monomethyl ether so that the non-volatile content was 30%, and then dried on a polycarbonate plate to have a dry film thickness of about 5 to 7 111. Then, pre-heating was performed for 5 minutes at 80 ° C. Next, using a UV irradiation device manufactured by Fusion UV System, light was irradiated with a metal halide lamp (output: 24 OWZcm) at an irradiation distance of 5.5 cm in the atmosphere (integrated light quantity: 50 Om jZcm 2 ).
- Adhesiveness Cut lines with a force cutter to reach the substrate surface of each test plate, make 100 squares of size 2111111 2111111, and apply adhesive cellophane tape to the surface. The number of coatings remaining on the squares after the film was applied and rapidly peeled off at 20 ° C was examined. “No” means no peeling, and “X” means peeling more than 1 square.
- Anti-fogging property ⁇ 1 ⁇ 1 ⁇ 1 ⁇ 1 ⁇ 1 ⁇ 1 ⁇ ⁇ ! ⁇ I ⁇ ] ⁇ ! 0 X j
- Each of the coating compositions (1) to (13) obtained in Examples 1 to 7 and Comparative Examples 1 and 2 was diluted with propylene dallicol monomethyl ether so that the nonvolatile content was 30%, and then polycarbonate.
- the plate was spray-coated to a dry film thickness of about 5-7 m, and preheated at 80 ° C for 5 minutes.
- each coated plate was placed in a carbon dioxide-filled tank, and irradiated with light from a metal halide lamp (output 10 OWZcm) at an irradiation distance of 70 cm using an ultraviolet irradiation device manufactured by Iwasaki Electric Co., Ltd. Light intensity 50 Om jZcm 2 ).
- the tank had a capacity of about lm 3 and about 2 kg of dry ice was put into the tank.
- the oxygen content in the tank immediately before light irradiation was about 5% by volume.
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- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Macromonomer-Based Addition Polymer (AREA)
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Abstract
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/660,375 US7776937B2 (en) | 2004-08-19 | 2005-08-17 | Photocurable composition for forming an anti-fogging coating |
JP2006531929A JP4942483B2 (ja) | 2004-08-19 | 2005-08-17 | 防曇性被膜形成用光硬化型組成物 |
EP05780985A EP1806388A1 (en) | 2004-08-19 | 2005-08-17 | Photocurable composition for forming antifog coating |
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JP2004239381 | 2004-08-19 | ||
JP2004-239381 | 2004-08-19 | ||
JP2004-259945 | 2004-09-07 | ||
JP2004259945 | 2004-09-07 |
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WO2006019175A1 true WO2006019175A1 (ja) | 2006-02-23 |
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PCT/JP2005/015303 WO2006019175A1 (ja) | 2004-08-19 | 2005-08-17 | 防曇性被膜形成用光硬化型組成物 |
Country Status (4)
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US (1) | US7776937B2 (ja) |
EP (1) | EP1806388A1 (ja) |
JP (1) | JP4942483B2 (ja) |
WO (1) | WO2006019175A1 (ja) |
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JP2014084401A (ja) * | 2012-10-23 | 2014-05-12 | Arakawa Chem Ind Co Ltd | 活性エネルギー線硬化性樹脂組成物、活性エネルギー線硬化性コーティング剤、活性エネルギー線硬化物およびその成形物品 |
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US10022945B2 (en) | 2014-09-22 | 2018-07-17 | Nof Corporation | Antifogging agent composition and antifogging article using same |
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JP2018197297A (ja) * | 2017-05-23 | 2018-12-13 | トーヨーポリマー株式会社 | 防曇コーティング組成物及びそれを用いた防曇性透明シート |
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Also Published As
Publication number | Publication date |
---|---|
JPWO2006019175A1 (ja) | 2008-05-08 |
US7776937B2 (en) | 2010-08-17 |
EP1806388A1 (en) | 2007-07-11 |
US20080118658A1 (en) | 2008-05-22 |
JP4942483B2 (ja) | 2012-05-30 |
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