CN102822287A - Powder coating having anodized look - Google Patents
Powder coating having anodized look Download PDFInfo
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- CN102822287A CN102822287A CN2011800117113A CN201180011711A CN102822287A CN 102822287 A CN102822287 A CN 102822287A CN 2011800117113 A CN2011800117113 A CN 2011800117113A CN 201180011711 A CN201180011711 A CN 201180011711A CN 102822287 A CN102822287 A CN 102822287A
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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
- C09D5/03—Powdery paints
- C09D5/032—Powdery paints characterised by a special effect of the produced film, e.g. wrinkle, pearlescence, matt finish
-
- 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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
- C09D5/035—Coloring agents, e.g. pigments
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/42—Gloss-reducing agents
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Wood Science & Technology (AREA)
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Abstract
A powder coating composition comprises the following ingredients: (a) a binder resin, (b) a solvent soluble dye, (c) a matting effect compound, and (d) less than 10 wt. % of a pigment or dye that is not soluble in a solvent, based on the total weight of powder coating composition. When cured, the powder coating composition has an anodized look. A substrate having an anodized look is also provided, which has an ADE-index above 3.
Description
The present invention relates to produce the special effects coating when solidified, promptly have the powder paint compositions of the coating of anodizing outward appearance.
Powder paint compositions is for generally comprising the solid film-forming resin, has one or more pigment usually and chooses any one kind of them or the solids compsn of multiple performance additive such as softening agent, stablizer, flow promotor and extender.Resin is generally thermoset, binder resin that for example mixes and corresponding crosslink agent (itself can be another binder resin).Generally speaking, resin has the T more than 30 ℃
g, softening temperature or fusing point.
By convention, the manufacturing of powder coating comprises the component melt-mixing with compsn.Melt-mixing relates in continuous mixer dry ingredients height, HS ground is mixed, the temperature that then mixture heating up is extremely raise-and more than the softening temperature of resin, but below solidification value-to form molten mixture.Mixing machine preferably comprises list or twin screw extruder because they when being used for improving the resin fusion other composition in the dispersion of resin.Molten mixture is extruded, and with the form roll-in of sheet, cooling is pulverized (efflorescence) so that mixture solidifies subsequently usually.
This processing generally is later on a series of screenings and lock out operation-for example grind then, classify, screening, screening, cyclonic separation, screening and filtration-then are applied over powder on the base material and with this powder heating with particle fusion and fusing and with coating curing.The main method that applies powder coating comprises fluidized-bed and electrostatic fluidized bed method and electrostatic coating method, wherein with the powder coating particle through the spray gun static electrification and be injected on the ground connection base material.
Anodizing is an electrochemical method, and wherein protective layer of alumina forms on the aluminium flake surface.This layer can be painted through electrochemical bath is dyeed.Anodizing give aluminum ratio with organic coating can be getable more deeply, the metal appearance that more is rich in.Anodized surface is translucent, so following basic metal even still visible after handling.
This anodizing outward appearance is wanted for various application and various base material, and is not only aluminium base.
The anodizing outward appearance can be with goal approach through measuring along measuring with the reflection of crossing the observation texture.Measure for each, can write down L, a and b value and the calculating of the standard of use color difference equation along with the aberration of crossing texture.When being reflected in the angle of fall (launching into 110 °) and measuring with minute surface, for surface with anodizing outward appearance, find greater than 3 Δ E (along-cross texture).For non-anodized surface with low or high gloss, find less than 2 Δ E (along-cross texture).
With regard to the present invention, the surface with anodizing outward appearance is the ADE index greater than 3 surface, wherein the ADE index definition for the Δ E that measures according to aforesaid method (along-cross texture).
At present, coating, solvent-based coating and powder coating all must need to use known electrochemical method and produce the coating with anodizing outward appearance.
Various powder paint compositions are disclosed in GB 1363741.These powder paint compositions can not obtain the anodizing outward appearance on being applied over base material and when solidifying.
Various powder paint compositions are disclosed in US6800334.These powder paint compositions can not obtain the anodizing outward appearance on being applied over base material and when solidifying.
Various powder paint compositions are disclosed in EP 1347021.These powder paint compositions can not obtain the anodizing outward appearance on being applied over base material and when solidifying.
Various powder paint compositions are disclosed in JP 6324317.These powder paint compositions can not obtain the anodizing outward appearance on being applied over base material and when solidifying.
Various powder paint compositions are disclosed in WO 2007/060070.These powder paint compositions can not obtain the anodizing outward appearance on being applied over base material and when solidifying.
Various powder paint compositions are disclosed in JP 2006185525.These powder paint compositions can not obtain the anodizing outward appearance on being applied over base material and when solidifying.
Discovery can obtain having the anodizing outward appearance when applying and solidify the powder coating that contains transparent pigment and do not contain any opaque pigment basically base material.Above-mentioned file does not disclose this combination and does not propose this combination and can produce instruction or the suggestion that is used in the powder coating of this anodizing outward appearance of generation on the base material.
Therefore, the present invention relates to use the powder paint compositions that comprises following component:
A. binder resin,
B. dissolve in the dyestuff of solvent,
C. the matting effect compound and
D. less than pigment that is insoluble to solvent or the dyestuff of 10 weight %, wherein wt % is based on the gross weight of powder paint compositions.
In one embodiment of the invention, the dyestuff that dissolves in solvent is a metallized dye.
In another embodiment of the present invention, powder paint compositions comprises the reagent that strengthens the solubleness of dyestuff in binder resin.
In another embodiment of the present invention, the reagent that strengthens the solubleness of dyestuff in binder resin comprises isocyanate groups.
In another embodiment of the present invention, the reagent that strengthens the solubleness of dyestuff in binder resin comprises the caprolactam blocking group.
Another embodiment of the present invention relates to the method that a kind of production has the base material of anodizing outward appearance, and the powder paint compositions that wherein will comprise following component is applied on the base material:
A. binder resin,
B. dissolve in the dyestuff of solvent,
C. the matting effect compound and
D. less than pigment that is insoluble to solvent or the dyestuff of 10 weight %, wherein wt % is based on the gross weight of powder paint compositions.
Base material is heated, and powder coating is solidified.
Resin in the powder composition and cross-linking system are not intended to limit characteristic of the present invention.Therefore, the appropriate resin that is included in the powder coating pre-composition comprises thermoplasticity and thermoset basis resin.
When being used for powder, thermoplastic resin must be under 120-300 ℃ storing temperature fusion and flow out into film and inapparent degraded in several minutes.Therefore; The suitable thermoplastic resins that is used for the present invention's practice comprises polymeric amide, polyester, cellulose ester, Vilaterm, Vestolen PP 7052, gathers (vinylchlorid) [PVC], gathers (vinylidene fluoride) [PVF2], PPSU and gathers (tetrafluoroethylene) [PTFE], and wherein PPSU and PTFE are preferred especially.All suitable thermoplastic resins are obtained by commercial source easily.
Be suitable for thermosetting resin of the present invention and comprise epoxy resin, urethane, ZGK 5, crystalline resins, polyester (comprising unsaturated polyester), acrylic resin and mishmash such as epoxy-vinylformic acid, polyester-vinylformic acid and epoxy-polyester.Second-order transition temperature (the T of these resins
g) enough height make particle can not be melted in together or sintering under the temperature that possibly meet with between transportation and shelf lives.Preferred T
gBe 45-120 ℃, in this scope, greater than 55 ℃ T
gBe preferred.
Epoxy resin
Suitable epoxy resin is to contain those with the functional aliphatic series of oxirane or aromatics skeleton, and for example is: in the presence of basic catalyst, react the diglycidylether polycondensate that produces by Epicholorohydrin and bis-phenol such as dihydroxyphenyl propane and Bisphenol F; With through linear phenolic resin and Epicholorohydrin at sodium hydroxide as reacting and the glycidyl ether of synthetic linear phenolic resin in the presence of the catalyzer.
Generally speaking, epoxy resin should have: the epoxide equivalent (EEW) of 600-2000; The hydroxyl equivalent of 300-400; With at 150 ℃ of following 200-2000 centipoises (cps), the melt viscosity of preferred 300-1000cps.This resinoid low melt viscosity makes them under less than 200 ℃ temperature, to be extruded.
Being preferred for commercially available epoxy resin of the present invention is with trade mark
GT-7004, GT-7071, GT-7072, GT-6259 (Huntsman LLC),
1001 and 2042 (Shell Chemicals, the bisphenol A epoxide resin of Inc.) selling.
Depend on required method and performance, can obtain being used for a large amount of solidifying agent of epoxy resin.Dyhard RU 100, modification and replacement Dyhard RU 100, solid dicarboxylicacid and their acid anhydride are the instances that can be used for those reagent of epoxy resin cure.For simplicity, the solidifying agent of solid form is preferred in the preparation of epoxy resin based powders and among the present invention in the preparation of other resin base powder.
Polyorganosiloxane resin
The polyorganosiloxane resin that is used for the present invention should be: at room temperature be solid; Have greater than 55 ℃, be preferably greater than 60 ℃ T
gWith 150 ℃ down about 500cps to about 10,000cps, the preferably viscosity of 2000-5000cps.
The suitable polyorganosiloxane resin that is used for the present invention especially is described in United States Patent(USP) Nos. 3,170, in 890,4,879,344,3,585,065 and 4,107,148, by reference its disclosure is incorporated herein.The instance of suitable commercially available polyorganosiloxane resin is phenyl polysiloxane SY-430 and methyl polysiloxane MK (the two is Wacker Silicone, the product of the U.S.) and methyl phenyl silicone 6-2230 (Dow Corning).
The hydroxyl-functional vibrin
The suitable hydroxyl-functional polyester that is used for the inventive method mainly is that hydroxyl-functional and characteristic should be preferably and have: i) about 25 to about 50 hydroxyl value; Ii) be less than or equal to 15, but the preferred acid number of about 1-2; Iii) be higher than 50 ℃ T
g
Meet these requirements as a hydroxyl functional polyester
107,
3000/3016 and
3109 market share.Yet this kind polyester can be used as the condensation product formation of polycarboxylic acid and polyvalent alcohol equally.Thereby; The carboxylic acid that is used to prepare this kind polyester resin comprise following one or more: phthalic acid, four-and hexahydrophthalic acid and their acid anhydride, succsinic acid, hexanodioic acid, sebacic acid, terephthalic acid and m-phthalic acid, 1; 3-and 1; The ester of 4-hexanaphthene-dicarboxylicacid and trimellitic acid 1,2-anhydride, this type acid.In addition, two suitable functional alcohol comprise terepthaloyl moietie, glycol ether, Ucar 35,1,2 and 1; The isomer of 3 Ucar 35 and Ucar 35, suitable divalent alcohol comprises pinakon, 1,3-, 1; 2-and 1,4-butyleneglycol, NSC 6366,2-butyl-2-ethyl-1, ammediol, 2-methyl isophthalic acid; Ammediol, 1,4-cyclohexanediol, TriMethylolPropane(TMP) and composition thereof.The technician can understand a large amount of this type acid and pure and mild method of carrying out acid and pure condensation.
The hydroxyl-functional polyester can be through hydroxyl and aliphatic series and aromatic isocyanate and aminoplastics curing.It is polyester that cured with isocyanates forms technical, but is described as the resin of urethane when solidified.Aminoplastics is oligopolymer, and it is aldehyde, particularly formaldehyde, with amino-or have amino material, the for example reaction product of trimeric cyanamide, urea, Dyhard RU 100 and benzoguanamine.Preferably use precursor such as hexamethylolmelamine, dimethylolurea and their the etherificate form of aminoplastics in many cases, promptly had the alkanol modification of 1-4 carbon atom.HMMM and tetramethoxy glycoluril illustration said etherificate form.The amino crosslinker
that especially preferably can obtain by American Cyanamid therefore, multiple commercially available aminoplastics and their precursor can be used for and hydroxyl functional resin of the present invention combination.
Usually to be enough to the amount with half hydroxyl reaction at least of polyester, promptly the normal amount of half stoichiometry at least of hydroxyl-functional provides the aminoplastics solidifying agent.Those skilled in the art can select correct stoichiometric ratio and levels of catalysts to realize required coating performance.Preferably, the amount of linking agent is enough to basic react with all hydroxyl-functionals of polyester fully, and having the crosslinked functional linking agent of nitrogen provides whenever the amount of weight polyester hydroxyl-functional to the crosslinked sense of about 12 equivalent nitrogen with about 2.
An acidic catalyst can be through reducing temperature required or improving speed of reaction or the two is used for improving with aminoplast(ic) resin curable polyester.When it is desirable to be reduced in the speed under the ambient storage temperature, can an acidic catalyst be used the amine end-blocking.The volatile amine that when catalyzer is locked through pyrolysis, can from cured film, overflow is suitable for this purpose.With regard to the present invention, it is desirable to delay the completely solidified of compsn especially.
1557 can be the instance of the end-blocking acid catalyst during the aminoplastics that is applicable to powder paint compositions of the present invention solidifies by the amine end-blocking dinonylnaphthalene sulfonic acid that King Industries obtains.
Vulcabond passes through between polymer chain, forming the carbamate connecting key on the hydroxy position the hydroxyl-functional curable polyester resin.The instance of aliphatic vulcabond commonly used is hexamethylene diisocyanate (HDI), two diisocyanate based dicyclohexyl methyl hydrides (commercial by Mlles Chemical as DESMODUR
) and isophorone diisocyanate (IPDI).Tolylene diisocyanate (TDI) is the instance of suitable aromatic diisocyanate.The low-temp reaction property of vulcabond can through with they be selected from following end-capping reagent addition and reduce: phenol, cresols, different nonylphenol, acid amides such as ε-Ji Neixianan, oxime such as methyl ethyl ketoxime and Diacetylmonoxime, the active compound that contains methylene radical such as ethyl malonate and isopropylidene malonate and acetylacetic ester and sodium sulfite anhy 96.The instance of end-blocking vulcabond comprises caprolactam blocking isophorone diisocyanate and caprolactam blocking hexamethylene diisocyanate.The instance of the commercially available solidifying agent of this type is 24-2400,24-2430 and the 24-2450 product of selling with the CARGILL trade mark.Another group end-blocking solidifying agent is end capped urea diketone in can be described as.The carboxyl-functional polyester resin
Carboxyl-functional polyester also is applicable to the present invention.These can be by polyfunctional acid and the glycol identical with the hydroxyl-functional polyester, but prepares with excess acid.Acid number is about 10 to about 100.Suitable commodity are
430,3010 and 7617 (can be obtained by UCB);
3400 and 3900; EL6500 or the EL6700 or the EL8800 that can obtain by Chan Sieh Enterprises.The fast setting of these carboxyl-functional polyesters can use polyepoxide solidifying agent such as isocyanuric acid three-glycidyl ester (TGIC) to realize.
Other optional solidifying agent as to TGIC comprises: Primids such as Primid XL552 and QM1260, its hydroxyalkyl amide for being obtained by EMS-Primid; The Araldite PT910 glycidyl ester that can obtain by Ciba Geigy; With the Uranox that can obtain by DSM.
To be applicable to that unsaturated polyester that the present invention puts into practice comprises organic two-or polyfunctional acid and two-or polyfunctional alcohol's the unsaturated reaction product of olefinic.Usually acid is undersaturated.This kind polyester resin acts on curable second resin such as Phthalic acid, diallyl ester usually in combination best.Also can incorporate initiator into.
Acrylic resin
The preferred acrylic resin that is used for powder coating is alkyl acrylate and/or methacrylic ester and glycidyl methacrylate and/or propenoate and olefinic monomer such as cinnamic multipolymer.Glycidyl functional acrylic resin conduct
is by Mitsui Toatsu Chemicals; Inc. sell; For it, the polymkeric substance of carboxy blocking can be used as linking agent.Hydroxyalkyl acrylates and alkylmethacrylate polymer also are suitable for the present invention.
The hybrid resin system
Hybrid resin system such as epoxy-acrylic acid series and polyester-acrylic acid series mixture also is suitable for the present invention.Yet if use this type system, it is preferably polyester-epoxy resin mishmash.As known in the art, polyester-epoxy resin mishmash comprises epoxy resin and carboxy-terminated polyester resin, also can comprise catalyzer to drive curing reaction.Usually, acid polyester has the equivalent of 600-4000, and epoxy resin has the equivalent of 400-1100.The catalyzer of epoxy resin-acid-respons comprises quaternary ammonium salt, season
salt, phosphine, amine, imidazoles and metal-salt.Amphoteric catalyst such as zinc oxide (ZnO
2) be effective to improve the solidification rate and the physicals of product with 1-5 part/100 parts by weight resin.
Powder paint compositions of the present invention also comprises the dyestuff that dissolves in solvent.This type dyestuff demonstrates good solubility at solvent in like alcohol, ketone and glycol ether and ester solvent usually.
In one embodiment of the invention, the dyestuff that dissolves in solvent is a metallized dye.Metallized dye is also referred to as metallized dye.Find that metallized dye is used for coloured fibre, natural and synthon such as tynex and wool.Chemically, metallized dye can broadly be divided into two types.1:1 metal complexes, one of them dye molecule and single metal Atomic coordinate.In the 1:2 metal complexes, an atoms metal and two dye molecule coordinations.Dye molecule is generally and contains other group such as hydroxyl, carboxyl or amino monoazo structure.They can form strong coordination compound with transition metal ion such as nickel, chromium, cobalt and copper.
In one embodiment of the invention, the dyestuff that dissolves in solvent is the 1:2 metallized dye.
The instance that can be used for the dyestuff that dissolves in solvent in the coating composition of the present invention comprises metallized dye, optical dye, dissolves in the dyestuff and the Polysynthren dyestuff of polymkeric substance.Instance
type dyestuff that can be used for the dyestuff in the coating composition of the present invention for providing by Clariant.
Find that this type dyestuff demonstrates good solubility in binder resin, like this especially when using the polyester binder resin.
When resin or resin compound use with dyestuff common or difference solubleness, find that solubleness can strengthen through the compound that use have an isocyanate groups.In another embodiment, find that solubleness can have the compound enhancing of hexanolactam group through use.Also can use to have isocyanate-functional and the functional compound of hexanolactam, for example with the end capped compound of ε-Ji Neixianan with isocyanate groups.Dyes can be used to improve the solubility of the base resin of the compounds include
B1530 (from Degussa of ε-caprolactam blocked polyisocyanate) and
B1540 (from Degussa capping urethodione compound).
Coating composition of the present invention also comprises the matting effect compound.With soluble dye combination, the matting effect compound is the basal component that obtains having the curing powder coating of anodizing outward appearance.
In the application's scope, the matting effect compound is for adding in the compsn to obtain the compound of matting effect.In the present composition, can use all kinds of matting effect compounds, for example:
-wax or wax mixture;
Second binder resin that-gelation time is different with the gelation time that is present in the binder resin in the compsn;
-with the glossiness depressant of binder resin reaction;
-have the stiffening agent of differential responses property group, wherein reactive group demonstrates the differential responses property to binder resin;
-a large amount have a coarse grained filler.
Suitable wax is optional from polyamide wax and polyethylene wax.Wax can have modification, for example micronization or PTFE modification.Generally speaking, wax has 100-160 ℃ fusing point.
Use the instance of second binder resin in the compsn that comprises two types of different vibrin, to find, a kind polyester resin has short relatively gelation time, and another kind of vibrin has long relatively gelation time.
When using with polyester base-material resin combination, with the instance of the glossiness depressant of binder resin reaction be Synthacryl 700.When being used for polyester/epoxy resin and mixing binder systems for use, another instance of this compounds is T-325, the resin base delustering agent.
When using with the epoxy resin combination, the instance with stiffening agent of differential responses property group is Vestagon B68.
Having coarse grained permanent white and lime carbonate can use to obtain having the curing powder coating of unglazed outward appearance with high relatively amount.
Except that above-mentioned resin system, dyestuff and matting effect compound, powder paint compositions can comprise usually known other component in this area.These can comprise: filler, flow control agent, degasifier and release agent.
Powder paint compositions of the present invention contains pigment that is insoluble to solvent or the dyestuff less than 10 weight %, and weight % is based on the gross weight of powder paint compositions.
In one embodiment, powder paint compositions of the present invention does not contain any opaque pigment basically, but it can contain a small amount of transparent pigment.The pigment of a large amount can destroy the anodizing/translucent appearance of coating.In context of the present invention, do not contain basically and mean compsn and contain any opaque pigment, more particularly less than any opaque pigment of 0,1 weight % less than 0,5 weight %.In one embodiment, compsn does not contain any opaque pigment, but it can contain a small amount of transparent pigment.
The instance of opaque pigment comprises mineral dye such as titanium oxide, red and Zh 1, chrome pigment and carbon black.
Other appropriate addn that is used for powder paint compositions can comprise: the sticking power stopper; Photostabilizer and UV absorption agent; Flow and the levelling additive; Glossiness is improved additive; The shrinkage cavity agent; Solidifying agent; Texturizing agent; Tensio-active agent; Wetting agent; Inhibitor (particularly phosphorous acid ester, hindered phenol and propionic ester); Biocide; With organic softening agent.
Filler can be used for reducing cost and/or strengthens or improve the performance and the outward appearance of coating.Comprising this particulate filler of glass particle, spun glass, steel fiber, tinsel and mica or metasilicic acid can be included in the powder paint compositions of the present invention.Usually use mineral sulfates such as tiff, carbonate such as chalk and silicate such as talcum.
Can metallics be comprised that rich zinc anti-corrosive particles adds in the powder paint compositions to give following base material preservative property.
The flow control agent can with based on the weight of compsn at the most the amount of 3 weight % be present in powder paint compositions.Enhancing composition melt flowability and this type flow control agent that helps to eliminate surface imperfection generally include vinylformic acid and fluorine-based polymkeric substance.The instance of commercially available flow control agent comprises:
P-67,
P-200 (all can be with
by Estron Chemical Inc.; Calvert City, KY obtains); From BYK Chemie (Wallingford, CONN)
361 and
300; From Monsanto (St.Louis,
2000 MO); With Acranal4F from BASF.
Degasifier also can be used for powder paint compositions of the present invention with the amount based on the weight 0.1-5 weight % of compsn.The release of gas during this type degasifier promotion curing.The instance of commercially available degasifier comprises: the Benzoin that can be obtained by Well Worth Medicines; With can be by GCA Chemical Corporation (Brandenton,
B that FLA) obtains.
Powder paint compositions also can comprise the release agent (master stream additive) based on the amount of the gross weight 0.05-1.0 weight % of compsn.The instance of this type additive comprises forging silicon oxide, precipitated silica, forging aluminum oxide, clay, talcum and composition thereof.
Typical powder paint compositions of the present invention can have following composition:
40-95 weight % binder resin or binder resin mixture;
0.2-2 weight % dissolves in the dyestuff of solvent;
0.2-60 weight % matting effect compound;
0-8 weight % solidifying agent;
0-25 weight % strengthens the reagent of the solubleness of dyestuff;
0.2-5 other composition of weight %;
Above weight % adds up to 100 weight % based on all the components sum in the total weight of powder paint compositions and the powder paint compositions.
The present invention typical case powder paint compositions based on the polyester binder resin can have following composition:
40-60 weight % first vibrin;
Second vibrin with gelation time different with first vibrin of 40-60 weight % serves as the matting effect compound;
2-8 weight % solidifying agent;
0.2-2 weight % dissolves in the dyestuff of solvent;
0.2-5 other composition of weight %;
Above weight % adds up to 100 weight % based on all the components sum in the total weight of powder paint compositions and the powder paint compositions.
The present invention typical case powder paint compositions based on mixing binder resin can have following composition:
30-50 weight % vibrin;
30-50 weight % epoxy resin;
0.2-2 weight % dissolves in the dyestuff of solvent;
0.2-5 weight % matting effect compound;
0-8 weight % solidifying agent;
0-25 weight % strengthens the reagent of the solubleness of dyestuff;
0.2-5 other composition of weight %;
Above weight % adds up to 100 weight % based on all the components sum in the total weight of powder paint compositions and the powder paint compositions.
Powder coating of the present invention can be with the film thickness that applies of wide region, and for example 30 μ m or littler film to 50,100, the film of 150 or 200 μ m apply usually.Typical minimum film thickness is 5 μ m.
Powder coating of the present invention can apply through electrostatic spraying device.Usually, with powder film thickness spraying with 40-60 μ m under 60-80KV.Can untapped powder collection and recycling be passed through application system.
Can powder paint compositions of the present invention be applied on the base material such as metal, wood and plastics of wide region.When being applied over powder paint compositions on the aluminium base, find best result about base material with anodizing outward appearance.
The ADE index
The ADE index is the objective method of describing the true anodesization surface quantitatively or having the surface of anodizing outward appearance.The ADE index can use can be with the device measuring of the discrete measurement of angle color in the plane.
For this measurement, for example can use X-rite MA68II portable multi-angle spectrophotometer.
The ADE index can be through measuring along measuring with the reflection of crossing observed texture.Measure for each, record L, a and b value and the calculating of the standard of use color difference equation along with the aberration of crossing texture.The angle of fall (launching into 110 ° with minute surface) that is reflected in surface to be measured is measured.The ADE index be Δ E (along-cross texture).For having the true anodes object or having the surface of the object of anodizing outward appearance, find ADE index greater than 3.For non-anodized surface or the surface that do not have the anodizing outward appearance of low or high glossiness, find ADE index less than 2.
In another embodiment, the present invention relates to have the base material that scribbles powder coating of anodizing outward appearance, this means coated surface and has the ADE index greater than 3.
Powder coating of the present invention demonstrates a large amount of advantageous properties when standing various machinery well known by persons skilled in the art or chemical test.During this performance is listed in the table below:
Only if spell out in addition, all percentage ratios that provide in following examples are the weight percentage based on total composition weight.
Embodiment
In following examples, use following composition:
| Composition | Describe |
| Solidifying agent 1 | Beta-hydroxy alkylamide from YaoHe, is used for Primid and solidifies |
| The colorant dissolubility toughener | The ε-Ji Neixianan blocked polyisocyanate is from Evonik |
| Degasifier | The bitter almond oil camphor that is used for degasification is from Daming |
| Epoxy resin | Bisphenol A epoxide resin is from Nanya |
| Other composition | Comprise: hindered amine as light stabilizer (HALS), filler, flow agent |
| Matting effect compound 1 | Saturated polyester resin of carboxylation |
| Matting effect compound 2 | T-325 is from Suoshi |
| Vibrin 1 | Saturated polyester resin of carboxylation |
| Vibrin 2 | Saturated polyester resin of carboxylation is from Shenjian |
| The Savinyl dyestuff | Metallized dye is from Clariant |
Embodiment 1-6
Prepare following polyester resin powder coating compositions:
These composition spray were solidified 10-15 minute down on aluminium sheet and at 200 ℃.All plates demonstrate light tone anodizing outward appearance after solidifying.When measuring according to aforesaid method, all coated panels demonstrate the ADE index greater than 3.
Embodiment 7-12 hybrid systems
Prepare following polyester/epoxy resin hybrid composition:
These composition spray were solidified 10-15 minute down on aluminium sheet and at 200 ℃.All plates demonstrate light tone anodizing outward appearance after solidifying.When measuring according to aforesaid method, all coated panels demonstrate the ADE index greater than 3.
Claims (11)
1. powder paint compositions, it comprises following component:
A. binder resin,
B. dissolve in the dyestuff of solvent,
C. the matting effect compound and
D. less than pigment that is insoluble to solvent or the dyestuff of 10 weight %, wherein wt % is based on the gross weight of powder paint compositions.
2. according to the powder paint compositions of claim 1, the said dyestuff that dissolves in solvent is a metallized dye.
3. according to the powder paint compositions of claim 1 or 2, it comprises the reagent that strengthens the solubleness of dyestuff in binder resin.
4. according to the powder paint compositions of claim 3, the reagent of the solubleness of wherein said enhancing dyestuff in binder resin comprises isocyanate groups.
5. according to the powder paint compositions of claim 3 or 4, the reagent of the solubleness of wherein said enhancing dyestuff in binder resin comprises the caprolactam blocking group.
6. according to the powder paint compositions of claim 1, it is characterized in that said compsn does not contain any opaque pigment basically.
7. powder paint compositions that does not contain any opaque pigment basically, it comprises following component:
40-95 weight % binder resin or binder resin mixture;
0.2-2 weight % dissolves in the dyestuff of solvent,
0.2-60 weight % matting effect compound,
0-8 weight % solidifying agent,
0-25 weight % strengthens the reagent of the solubleness of dyestuff,
0.2-5 other composition of weight %,
Above weight % adds up to 100 weight % based on all the components sum in the total weight of powder paint compositions and the powder paint compositions.
8. a manufacturing has the method for the base material of anodizing outward appearance, wherein will be applied on the base material according to each powder paint compositions among the claim 1-7, and heated substrate also solidifies powder coating.
9. one kind when the base material that has the anodizing outward appearance when each powder paint compositions applies in according to claim 1-7.
10. according to the base material of claim 9, it is characterized in that said base material is an aluminium base.
11. a base material that is coated with powder coating, said coated surface have the ADE index greater than 3.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNPCT/CN2010/070962 | 2010-03-10 | ||
| US36166910P | 2010-07-06 | 2010-07-06 | |
| EP10168576 | 2010-07-06 | ||
| EP10168576.6 | 2010-07-06 | ||
| US61/361,669 | 2010-07-06 | ||
| PCT/CN2011/071629 WO2011110089A1 (en) | 2010-03-10 | 2011-03-09 | Powder coating having anodized look |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102822287A true CN102822287A (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800117113A Pending CN102822287A (en) | 2010-03-10 | 2011-03-09 | Powder coating having anodized look |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102822287A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110168001A (en) * | 2016-10-28 | 2019-08-23 | 通用线缆技术公司 | Ambient cure application composition and cable fitting for cable |
| CN112236476A (en) * | 2018-06-06 | 2021-01-15 | 佐敦有限公司 | Composition comprising a metal oxide and a metal oxide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445313A (en) * | 2002-03-20 | 2003-10-01 | 斯普雷赖特股份有限公司 | Powder coating composition and method |
| US20090238981A1 (en) * | 2008-03-18 | 2009-09-24 | Decker Owen H | Powder coating composition for metal deposition |
-
2011
- 2011-03-09 CN CN2011800117113A patent/CN102822287A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445313A (en) * | 2002-03-20 | 2003-10-01 | 斯普雷赖特股份有限公司 | Powder coating composition and method |
| US20090238981A1 (en) * | 2008-03-18 | 2009-09-24 | Decker Owen H | Powder coating composition for metal deposition |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110168001A (en) * | 2016-10-28 | 2019-08-23 | 通用线缆技术公司 | Ambient cure application composition and cable fitting for cable |
| CN110168001B (en) * | 2016-10-28 | 2022-05-24 | 通用线缆技术公司 | Environmentally curable coating composition for cables and cable fittings |
| CN112236476A (en) * | 2018-06-06 | 2021-01-15 | 佐敦有限公司 | Composition comprising a metal oxide and a metal oxide |
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