CN107033717A - Water-based coating material - Google Patents

Water-based coating material Download PDF

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Publication number
CN107033717A
CN107033717A CN201610951365.1A CN201610951365A CN107033717A CN 107033717 A CN107033717 A CN 107033717A CN 201610951365 A CN201610951365 A CN 201610951365A CN 107033717 A CN107033717 A CN 107033717A
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China
Prior art keywords
weight
composition
water
absorb
based coating
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Inventor
堀井健志
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JAPAN SK CHEMICAL CO Ltd
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JAPAN SK CHEMICAL CO Ltd
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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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
    • 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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09D133/10—Homopolymers or copolymers of methacrylic acid esters
    • C09D133/12—Homopolymers or copolymers of methyl methacrylate
    • 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
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/024—Emulsion paints including aerosols characterised by the additives
    • 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
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/024—Emulsion paints including aerosols characterised by the additives
    • C09D5/028—Pigments; Filters
    • 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
    • C09D5/29—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for multicolour effects
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/101—Esters; Ether-esters of monocarboxylic acids
    • C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols

Abstract

The present invention provides the excellent water-based coating materials such as a kind of aesthetic property, absorb-discharge humid.The water-based coating material of the present invention comprising synthetic resin emulsion (A), absorb-discharge humid powder (B), average grain diameter be 0.4 μm less than the aggregate (D) that the bulk material (C) and average grain diameter that 80 μm, refractive index are more than 1.4 and less than 2.0 are more than 80 μm, the weight ratio [(C)/(D)] of above-mentioned bulk material (C) and above-mentioned aggregate (D) is 0.1/1~10/1.

Description

Water-based coating material
Technical field
The present invention relates to the water-based coating material with excellent absorb-discharge humid.
Background technology
In recent years, the concern for comfortable living space is improved.For example, adding on the surface in the built-in face such as wall, ceiling In terms of work, for preventing from condensing, prevent it is mouldy or suppressed by humidity regulation the functions such as sense of discomfort, put with suction The expectation of moist rapidoprint is improved.
As the rapidoprint with absorb-discharge humid, such as in patent document 1, describe added with absorb-discharge humid material The lining material of powder.Specifically, describe comprising acrylic resin emulsion, water, absorb-discharge humid material powder it is coated Material.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2003-155786 publications (the 0030th section of claim 1, specification)
The content of the invention
Technical problem
But, as the processing outward appearance produced by lining material described in above-mentioned patent document 1 shows solid color , there is limitation in terms of aesthetic property in tone.In addition, being still had room for improvement in terms of absorb-discharge humid.
The present invention be in view of so the problem of and complete, it is excellent its object is to obtain aesthetic property, absorb-discharge humid etc. Water-based coating material.
Technical scheme
The present inventor has made intensive studies to solve the above problems, and as a result contemplates with synthetic resin emulsion, inhales and put Moist powder, specific bulk material and aggregate as neccessary composition water-based coating material, so as to complete the present invention.
The water-based coating material that the present invention is provided, it is the water-based coating material with absorb-discharge humid, it is characterised in that bag Contain：It is 1.4 less than 80 μm, refractive index that synthetic resin emulsion (A), absorb-discharge humid powder (B), average grain diameter, which are 0.4 μm, Above and less than 2.0 bulk material (C) and average grain diameter is more than 80 μm of aggregate (D), above-mentioned bulk material (C) and above-mentioned aggregate (D) weight ratio [(C)/(D)] is 0.1/1~10/1.
It is preferred that, in above-mentioned water-based coating material, relative to the weight of solid constituent 100 of above-mentioned synthetic resin emulsion (A) Part, containing the above-mentioned absorb-discharge humid powder (B) more than 5 parts by weight and below 500 parts by weight, and add up to 100 parts by weight with Above-mentioned bulk material (C) and above-mentioned aggregate (D) below upper and 3000 parts by weight.
Invention effect
The water-based coating material of the present invention plays excellent aesthetic property, absorb-discharge humid etc. in the film formed with it.
Embodiment
Hereinafter, the embodiment to the present invention is illustrated.
The water-based coating material of the present invention is 0.4 comprising synthetic resin emulsion (A), absorb-discharge humid powder (B), average grain diameter μm less than 80 μm, refractive index be more than 1.4 and less than 2.0 bulk material (C), and average grain diameter be more than 80 μm Aggregate (D) is used as constituent.
Above-mentioned synthetic resin emulsion (A) (hereinafter referred to as " (A) composition ") is worked as binding material, for example, can enumerate Acrylic resin emulsion, carbamate resins emulsion, vinyl acetate resin emulsion, vinyl emulsion, silicones breast Liquid, epoxy resin latex, fluoro-resin emulsion, acrylic acid-vinyl acetate resin emulsion, acrylic acid-nitrogen carbamate resin breast Liquid, acrylic acid-resin emulsion, acrylic acid-fluoro-resin emulsion etc., can use the one kind or two or more of them.
As (A) composition, the preferably monomer using (methyl) alkyl acrylate and/or containing aromatic series base is used as main component Monomer group emulsion polymer.As (methyl) alkyl acrylate, the monomer containing aromatic series base, known thing can be used Matter.It should be noted that in the present invention, alkyl acrylate and alkyl methacrylate being merged and are expressed as (methyl) third Olefin(e) acid Arrcostab.
In addition, in the present invention, it is preferred to including hydrophobic monomer in the monomer group for constituting (A) composition.It is used as hydrophobicity Monomer, such as can enumerate long-chain (methyl) alkyl acrylate, the monomer containing aromatic series base.
As long-chain (methyl) alkyl acrylate, it can use with carbon number (methyl) for more than 6 alkyl Alkyl acrylate, for example, can enumerate (methyl) the just own ester of acrylic acid, (methyl) 2-ethyl hexyl acrylate, (methyl) propylene Misery ester, (methyl) decyl acrylate, (methyl) dodecylacrylate, (methyl) octadecyl acrylate, (methyl) Cyclohexyl acrylate etc..As the monomer containing aromatic series base, for example, it can enumerate styrene, 2-methyl styrene, vinyl first The styrenic monomers such as benzene, vinyl xylene, ethyl vinyl benzene, vinyl naphthalene, chlorostyrene, or, (methyl) phenyl acrylate, (methyl) (methyl) acrylate containing aromatic series base such as benzyl acrylate, (methyl) acrylate etc..These materials can be with Using one kind or two or more.
In the present invention, particularly preferably include (methyl) with the alkyl that carbon number is more than 6 (being preferably more than 8) Alkyl acrylate is used as above-mentioned hydrophobic monomer.
The content of above-mentioned hydrophobic monomer in monomer group is preferably more than 10 weight % in terms of part by weight, is more preferably More than 30 weight %, more preferably more than 40 weight %.The upper limit is not particularly limited, preferably below 99.5 weight %. Under such circumstances, the compatibility with lyophobic dust described later is improved, it is possible to increase effect of the invention.
(A) glass transition temperature of composition is not particularly limited, be preferably more than -40 DEG C and less than 80 DEG C, more preferably For more than -30 DEG C and less than 50 DEG C.It should be noted that glass transition temperature is the value obtained using Fox calculating formula.
(A) average grain diameter of composition is not particularly limited, preferably more than 10nm and below 500nm, more preferably 50nm Above and below 400nm, more preferably more than 100nm and below 300nm.Such (A) composition from improve absorb-discharge humid In terms of consider be preferred.It should be noted that the average grain diameter of synthetic resin emulsion is to utilize dynamic light scattering determination Value.Specifically, dynamic light scattering can be used to determine device (" LB-550 ", Horiba Ltd's system) etc. to carry out Determine (it is 25 DEG C to determine temperature).
(A) emulsion polymerization known to components utilising is manufactured.For example, as emulsion polymerization, can be by dividing The methods such as polymerization, monomer dropping polymerization, emulsified monomer dropwise addition polymerization are criticized to manufacture.In addition, when manufacturing (A) composition, Ke Yigen Such as anionic emulsifier, nonionic emulsifier, cationic emulsifier, the amphoteric emulsifier of necessary amount are added according to purpose Deng emulsifying agent, azo series initiators, peroxide series initiators, persulfate initiator, redox initiator, photopolymerization are drawn Send out the initiators such as agent, reactive initiators, and solvent, dispersant, stable emulsifying agent, polymerization inhibitor, polymerization inhibitor, buffering Agent, crosslinking agent, pH adjusting agent, chain-transferring agent, catalyst etc..(A) solid constituent of composition is preferably more than 10 weight % and 65 Below weight %, more preferably more than 30 weight % and below 60 weight %.(A) in composition as medium, using substantially wrapping Aqueous synthetic resin emulsion.
The absorb-discharge humid powder (B) (hereinafter referred to as " (B) composition ") used in the present invention is used to assign absorb-discharge humid.So (B) composition there is following performance：Hydroscopicity under conditions of 20 DEG C of temperature, relative humidity 90% is preferably more than 5%, more Preferably more than 10%.It should be noted that above-mentioned hydroscopicity be according to by sample in 20 DEG C of temperature, the perseverance of relative humidity 45% After being dried 24 hours in hygrothermostat, the weight in 20 DEG C of temperature, the Constant Temperature and Humidity Chambers of relative humidity 90% during moisture absorption 24 hours The value that amount change is obtained.That is,
Hydroscopicity (%)=((weight-dried weight after moisture absorption)/dried weight) × 100
As (B) composition, for example, it can enumerate boehmite, silica gel, zeolite, sodium sulphate, aluminum oxide, allophane, diatom Soil, siliceous shale, sepiolite, attapulgite, montmorillonite, eakleite, imogolite, large space between muscles stone flour, atlapulgite, charcoal, Bamboo charcoal, activated carbon, wood powder, oyster shell whiting, porous synthetic resin grain etc., in the present invention it is possible to particularly preferably using selected from vigorous nurse More than a kind of material in stone, silica gel, zeolite, diatomite, siliceous shale.
(B) average grain diameter of composition is not particularly limited, preferably more than 1 μm and less than 1000 μm, more preferably 5 μm with Go up and less than 500 μm, more preferably more than 10 μm and less than 200 μm, most preferably more than 15 μm and less than 150 μm.Need It is noted that the average grain diameter of absorb-discharge humid powder can be measured using laser diffraction formula particle size distribution device.
Relative to the parts by weight of solid constituent 100 of (A) composition, the mixed proportion of (B) composition be preferably it is more than 5 parts by weight and Below 500 parts by weight, more preferably more than 8 parts by weight and below 400 parts by weight, more than more preferably 10 parts by weight and Below 300 parts by weight.In the case where reaching such scope, excellent absorb-discharge humid can be played, in water resistance, resistance to cleaning It is also preferred in terms of property, intensity.
In water-based coating material of the present invention, using average grain diameter be 0.4 μm less than 80 μm, refractive index be 1.4 with It is upper and less than 2.0 bulk material (C) (hereinafter referred to as " (C) composition "), and average grain diameter for more than 80 μm aggregate (D) (with It is referred to as " (D) composition " down).In the present invention, can be in aesthetic property, moisture adsorption and releasing by sharing these (C) compositions and (D) composition Excellent performance is obtained in terms of property.Its mechanism of action is still not clear, but is thought because (C) composition with above-mentioned physics value exists Show the transparency in overlay film, therefore while deep sense etc. is assigned to overlay film, almost the colour rendering of without prejudice to (D) composition. Additionally it is believed that (C) composition helps to form the hole as vapor passage path in overlay film.Speculate the present invention effect and this The mechanism of action of sample is relevant.
(C) average grain diameter of composition be 0.4 μm less than 80 μm, be preferably more than 0.5 μm and less than 75 μm, it is more excellent Elect more than 1 μm and less than 60 μm, more preferably more than 2 μm and less than 45 μm as.(C) average grain diameter of composition can be utilized Laser diffraction formula particle size distribution device is measured.
(C) refractive index of composition is more than 1.4 and less than 2.0, is preferably more than 1.45 and less than 1.7.Refractive index can be with It is measured using Abbe refractometer.
As the concrete example of (C) composition, for example, it can enumerate alumina silicate, magnesium silicate, barium sulfate, silica, calcium carbonate Deng inanimate matter bulk material, or the organic matter bulk material such as resin particle etc..In addition, these bulk materials are usually undeliverable chromaticity.Separately Outside, these bulk materials are preferably solid.It is used as (C) composition in the present invention, particularly preferred inanimate matter bulk material.
(D) components utilising its particle properties in the present invention can assign the aesthetic properties such as many color sensations, concave-convex sense.It is used as (D) Composition, can for example enumerate natural stone-powder mince, chinaware crushed material of making pottery, ceramic crushed material, glass crushed material, bead, resin The various aggregates such as crushed material, resin bead, clipped wire.Wherein, minced as natural stone-powder, for example, can enumerate marble, Hua Gang The crushed material of stone, serpentinite, granite, fluorite, gypsum rubrum, feldspar, silica, silica sand etc..As (D) composition, it can also enumerate Coloring is carried out by using being surface-treated such as pigment, dyestuff, glaze to the surface of such various aggregates and has applied Aggregate (coloring aggregate) of cloth etc..Such aggregate can use one kind or two or more.As (D) composition, preferably at least include Colour aggregate, the coloring aggregate more preferably at least comprising two or more different colours.In addition it is also possible to will coloring aggregate with it is transparent Property aggregate combination and be used as (D) composition.(D) is used as alternatively, it is also possible to which the aggregate of chromatic colour is combined with the aggregate of netrual colour Composition.Such (D) composition is preferred in terms of aesthetic property is improved.
(D) average grain diameter of composition be more than 80 μm, be preferably more than 80 μm and less than 1000 μm, be more preferably 90 μm with Go up and less than 800 μm.(D) average grain diameter of composition is by using JIS Z8801-1：Metal screen cloth as defined in 2000 is carried out Screening, and calculate value obtained from the average value of its distribution of weight.
In the present invention, the weight ratio [(C)/(D)] of (C) composition and (D) composition is set as 0.1/1~10/1, preferably It is set as 0.2/1~5/1, is more preferably set as 0.3/1~3/1.Thus obtain excellent in terms of aesthetic property, absorb-discharge humid Physical property.In the case that the weight ratio [(C)/(D)] is too small, the aesthetic property such as apparent deep sense of processing is insufficient, in addition, it is difficult to Obtain absorb-discharge humid and improve effect.In the case that weight ratio [(C)/(D)] is excessive, the colour rendering based on (D) composition easily becomes It is insufficient, it is also possible to bring obstacle to painting work etc..
Relative to the parts by weight of solid constituent 100 of (A) composition, the total amount of (C) composition and (D) composition is preferably 100 weight More than part and below 3000 parts by weight, more than more preferably 500 parts by weight and below 2500 parts by weight.(C) composition and (D) composition If the such mixed proportion of total amount, then more preferably, in film forming, water resistance, resistance in terms of aesthetic property, absorb-discharge humid It is also advantageous in terms of disruptiveness, painting work.
In addition to mentioned component, the solubility that water-based coating material of the present invention may be embodied in water (20 DEG C of water temperature) is Below 10g/100g, boiling point are more than 200 DEG C of lyophobic dust (E) (hereinafter referred to as " (E) composition ").Such (E) composition It is preferred in terms of absorb-discharge humid is improved.(E) solubility of the composition in water is preferably below 5g/100g, is more preferably Below 1g/100g, more preferably below 0.1g/100g, most preferably below 0.08g/100g, boiling point is preferably 240 DEG C Above, more preferably more than 260 DEG C.
As (E) composition, for example, it can enumerate ethylene glycol monohexylether, butyl cellosolve, diethylene glycol monohexyl ether, diethyl Glycol monobutyl ether acetic acid esters, dibutyl ethylene glycol ether, propane diols phenylate, Dipropylene glycol mono-n-butyl Ether, dipropylene glycol t-butyl ether, 3 third Glycol monobutyl ether, ethohexadiol, 2- ethohexadiols, 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates, 2,2,4- front threes Base -1,3- pentanediol diisobutyrate, phenmethylol etc..These materials can use one kind or two or more.In the present invention, especially 2,2,4- trimethyl -1,3- pentanediol diisobutyrates are preferably comprised as (E) composition.
The mechanism of action of such (E) composition is still not clear, but in view of (E) composition in synthetic resin emulsion when ratio exist More it is present in water near resin particle, it is believed that in the storage of water-based coating material or even during film forming, (E) composition can Suppress resin particle to enter in absorb-discharge humid powder.Thus, it is believed that the moisture adsorption and releasing of absorb-discharge humid powder script can be given full play to Property.Think in the case of including hydrophobic monomer as its constituent in (A) composition, can particularly advantageously play such Effect.
Relative to the parts by weight of solid constituent 100 of (A) composition, the mixed proportion of (E) composition is preferably more than 0.1 parts by weight And 40 below parts by weight, more than more preferably 1 parts by weight and below 30 parts by weight.In the case of reaching such scope, carrying It is preferred in terms of high wet absorption and discharging.
In water-based coating material of the present invention, in addition to mentioned component, above-mentioned (C) composition, (D) composition can also be used Bulk material, aggregate in addition etc..For example, it is also possible to which being assigned by the aggregate for suitably mixing big particle diameter, flakey aggregate etc. has The aesthetic property of characteristic.
In addition, in water-based coating material of the present invention, can mix as needed for example coloring pigment, hollow pearl, plasticizer, Coalescents, antifreezing agent, preservative, mould inhibitor, antiseptic, defoamer, pigment dispersing agent, thickener, levelling agent, wetting agent, PH adjusting agent, fiber-like, delustering agent, ultra-violet absorber, antioxidant, light stabilizer, adsorbent, catalyst, crosslinking agent etc., It can use such composition is appropriately combined., can also mixing water, solvent as needed in water-based coating material of the present invention Deng.
It should be noted that in the present invention, preferably the mixed proportion of coloring pigment and hollow pearl is suppressed in without prejudice to State the degree for the aesthetic property that (D) composition is brought.Relative to the parts by weight of solid constituent 100 of (A) composition, coloring pigment and hollow The total amount of pearl is preferably below 30 parts by weight, below more preferably 10 parts by weight, below more preferably 5 parts by weight.Also it is excellent Mode of the choosing without coloring pigment and hollow pearl.
Water-based coating material of the present invention shows absorb-discharge humid in its overlay film formed.Absorb-discharge humid can pass through base In JIS A6909：The moisture adsorption and releasing amount of 2014 " processing for building applies material " 7.29 is measured.The moisture adsorption and releasing of lining material of the present invention Amount is preferably 20g/m2Above, more preferably 60g/m2Above, more preferably 70g/m2Above, it is most preferably 80g/m2With On.
The water-based coating material of the present invention mainly may be used as the surface finished materials in the built-in face such as wall, ceiling.Make To constitute the base material of wall, ceiling etc., be not particularly limited, can for example enumerate concrete, mortar, slabstone, calcium silicate board, ALC plates, extrusion molding plate, plasterboard, brick, ceramic tile, exterior panel, metallic plate, glued board etc..In addition, these base materials can be to it Implement relevant surfaces processing (sealant, finish paint, filler, putty etc.), can also possess existing film etc..
Although the coated weight of water-based coating material is depending on species of the pattern formed etc., preferably 0.1kg/m2With Upper and 4kg/m2Below, it is more preferably 0.2kg/m2Above and 3kg/m2Following left and right.In the range of such coated weight, It can be respectively coated several times.As applicating implement, be not particularly limited, can for example use sprayer, roller, trowel, Hairbrush etc..During coating can also the diluent such as mixing water suitably adjust viscosity.Dilution ratio is preferably more than 0 weight % and 10 Below weight %.Coating and drying afterwards are preferably more than 0 DEG C and less than 40 DEG C (normal temperature) is carried out.
Embodiment
The feature of embodiment described below, the further clear and definite present invention.
(embodiment 1)
Using the raw material shown in table 1, each raw material is mixed using conventional method according to the formula shown in table 2, It is prepared for water-based coating material.
On the slabstone (base material) for implementing sealant processing, using trowel with 1.5kg/m2Coated weight apply fabric aqueous quilt Material (the water-based coating material that 1 day is saved after manufacture) is covered, test body has been made.It should be noted that water-based coating material Manufacture, preservation and the making of test body carried out in the environment of 23 DEG C of temperature, relative humidity 50%.To resulting aqueous Lining material has carried out following experiment.
(1) outward appearance is processed
The processing outward appearance of above-mentioned test body is have rated by visual observation.In evaluation, evaluated with 3 stages, there will be nature The test body for many color sensations that stone is adjusted is evaluated as " A ", is evaluated as the test body for lacking many color sensations " C " (A ＞ B ＞ C).
(2) absorb-discharge humid 1
By the side and the back side of above-mentioned test body with after aluminium rubber belt sealing, according to JIS A6909：2014 " processing for building Process described in painting material " 7.29, determines moisture adsorption and releasing amount (g/m2).Metewand is as follows.As a result it is shown in Table 2.
A：Moisture adsorption and releasing amount 80g/m2More than
B：Moisture adsorption and releasing amount 70g/m2Less than 80g/m2
C：Moisture adsorption and releasing amount 60g/m2Less than 70g/m2
D：Moisture adsorption and releasing amount is less than 60g/m2
(3) absorb-discharge humid 2
In addition to using and the water-based coating material of 7 days saved in the environment of 50 DEG C after manufacture, other utilizations Test body is made with the above-mentioned identical method of absorb-discharge humid 1, and determines its moisture adsorption and releasing amount.As a result it is shown in Table 2.
(embodiment 2~11, comparative example 1~2)
In addition to the formula shown in table 2, other are prepared for water-based coating material according to method same as Example 1, And carry out experiment same as Example 1.As a result it is shown in Table 2.
Table 1
MMA：Methyl methacrylate
n-BA：N-butyl acrylate
2EHA：2-EHA
MAA：Methacrylic acid
MPTS：Gamma-methyl allyl acyloxypropyl trimethoxysilane

Claims (2)

1. a kind of water-based coating material, it is the water-based coating material with absorb-discharge humid, it is characterised in that
Comprising：Synthetic resin emulsion (A), absorb-discharge humid powder (B), average grain diameter are 0.4 μm less than 80 μm, refractive index For more than 1.4 and less than 2.0 bulk material (C), and the aggregate (D) that average grain diameter is more than 80 μm,
The weight ratio [(C)/(D)] of the bulk material (C) and the aggregate (D) is 0.1/1~10/1.
2. water-based coating material as claimed in claim 1, it is characterised in that
Relative to the parts by weight of solid constituent 100 of the synthetic resin emulsion (A), containing it is more than 5 parts by weight and 500 parts by weight with Under the absorb-discharge humid powder (B), and add up to the bulk material more than 100 parts by weight and below 3000 parts by weight And above-mentioned aggregate (D) (C).
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Application publication date: 20170811