CN116265539A - High-saturation water-based refinishing paint composition, and preparation method and application thereof - Google Patents
High-saturation water-based refinishing paint composition, and preparation method and application thereof Download PDFInfo
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- CN116265539A CN116265539A CN202111545027.5A CN202111545027A CN116265539A CN 116265539 A CN116265539 A CN 116265539A CN 202111545027 A CN202111545027 A CN 202111545027A CN 116265539 A CN116265539 A CN 116265539A
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- 239000003973 paint Substances 0.000 title claims abstract description 154
- 239000000203 mixture Substances 0.000 title claims abstract description 134
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title abstract description 17
- 239000002270 dispersing agent Substances 0.000 claims abstract description 51
- 239000000049 pigment Substances 0.000 claims abstract description 33
- 229920003009 polyurethane dispersion Polymers 0.000 claims abstract description 27
- 239000001053 orange pigment Substances 0.000 claims abstract description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000004873 anchoring Methods 0.000 claims abstract description 13
- 150000003254 radicals Chemical class 0.000 claims abstract description 12
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920001577 copolymer Polymers 0.000 claims abstract description 8
- 150000001412 amines Chemical class 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims description 40
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 23
- 239000012752 auxiliary agent Substances 0.000 claims description 21
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical group O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 18
- 239000011324 bead Substances 0.000 claims description 17
- 238000009736 wetting Methods 0.000 claims description 16
- 239000003960 organic solvent Substances 0.000 claims description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- 239000013530 defoamer Substances 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 7
- 125000001931 aliphatic group Chemical group 0.000 claims description 6
- 239000004417 polycarbonate Substances 0.000 claims description 6
- 229920000515 polycarbonate Polymers 0.000 claims description 6
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 125000003368 amide group Chemical group 0.000 claims description 5
- 125000003277 amino group Chemical group 0.000 claims description 5
- 229920001400 block copolymer Polymers 0.000 claims description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 5
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 claims description 5
- CUDYYMUUJHLCGZ-UHFFFAOYSA-N 2-(2-methoxypropoxy)propan-1-ol Chemical compound COC(C)COC(C)CO CUDYYMUUJHLCGZ-UHFFFAOYSA-N 0.000 claims description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 4
- UPGSWASWQBLSKZ-UHFFFAOYSA-N 2-hexoxyethanol Chemical compound CCCCCCOCCO UPGSWASWQBLSKZ-UHFFFAOYSA-N 0.000 claims description 4
- JJDGTGGQXAAVQX-UHFFFAOYSA-N 6-methyl-1-(6-methylheptoxy)heptane Chemical compound CC(C)CCCCCOCCCCCC(C)C JJDGTGGQXAAVQX-UHFFFAOYSA-N 0.000 claims description 4
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims description 3
- 150000004056 anthraquinones Chemical class 0.000 claims description 3
- BBEAQIROQSPTKN-UHFFFAOYSA-N antipyrene Natural products C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 claims description 3
- MYONAGGJKCJOBT-UHFFFAOYSA-N benzimidazol-2-one Chemical compound C1=CC=CC2=NC(=O)N=C21 MYONAGGJKCJOBT-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 claims description 3
- 239000003002 pH adjusting agent Substances 0.000 claims description 3
- 229920000570 polyether Polymers 0.000 claims description 3
- -1 pyrene ketone Chemical class 0.000 claims description 3
- 239000000080 wetting agent Substances 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical group 0.000 claims description 2
- FYNROBRQIVCIQF-UHFFFAOYSA-N pyrrolo[3,2-b]pyrrole-5,6-dione Chemical compound C1=CN=C2C(=O)C(=O)N=C21 FYNROBRQIVCIQF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004034 viscosity adjusting agent Substances 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 description 40
- 230000008439 repair process Effects 0.000 description 22
- 239000011347 resin Substances 0.000 description 22
- 229920005989 resin Polymers 0.000 description 22
- 239000008367 deionised water Substances 0.000 description 12
- 229910021641 deionized water Inorganic materials 0.000 description 12
- 230000007935 neutral effect Effects 0.000 description 12
- 238000003860 storage Methods 0.000 description 12
- 239000004576 sand Substances 0.000 description 10
- 238000003756 stirring Methods 0.000 description 6
- 239000003086 colorant Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000003801 milling Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000004595 color masterbatch Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- DLQMNSDNQWLFSS-UHFFFAOYSA-N 2-[(4-chloro-2-nitrophenyl)diazenyl]-3-oxo-n-(2-oxo-1,3-dihydrobenzimidazol-5-yl)butanamide Chemical compound C=1C=C2NC(=O)NC2=CC=1NC(=O)C(C(=O)C)N=NC1=CC=C(Cl)C=C1[N+]([O-])=O DLQMNSDNQWLFSS-UHFFFAOYSA-N 0.000 description 3
- 239000002518 antifoaming agent Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000011268 mixed slurry Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- MRQIXHXHHPWVIL-ISLYRVAYSA-N Sudan I Chemical compound OC1=CC=C2C=CC=CC2=C1\N=N\C1=CC=CC=C1 MRQIXHXHHPWVIL-ISLYRVAYSA-N 0.000 description 2
- 238000002296 dynamic light scattering Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- HTENFZMEHKCNMD-UHFFFAOYSA-N helio brilliant orange rk Chemical compound C1=CC=C2C(=O)C(C=C3Br)=C4C5=C2C1=C(Br)C=C5C(=O)C1=CC=CC3=C14 HTENFZMEHKCNMD-UHFFFAOYSA-N 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- DAZXVJBJRMWXJP-UHFFFAOYSA-N n,n-dimethylethylamine Chemical group CCN(C)C DAZXVJBJRMWXJP-UHFFFAOYSA-N 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- DGBWPZSGHAXYGK-UHFFFAOYSA-N perinone Chemical compound C12=NC3=CC=CC=C3N2C(=O)C2=CC=C3C4=C2C1=CC=C4C(=O)N1C2=CC=CC=C2N=C13 DGBWPZSGHAXYGK-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000010526 radical polymerization reaction Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- OPYRETPBRCRXQU-UHFFFAOYSA-N 4,6-dihydro-1h-pyrrolo[3,2-b]pyrrol-5-one Chemical compound N1C=CC2=C1CC(=O)N2 OPYRETPBRCRXQU-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
-
- 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
- C09D7/41—Organic pigments; Organic dyes
-
- 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
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The application provides a high-saturation water-based refinish paint composition, and a preparation method and application thereof. The aqueous refinish paint composition comprises: color paste, aqueous polyurethane dispersion and water; the color paste comprises transparent orange pigment and a dispersing agent, wherein the dispersing agent is a controllable free radical polymerized acrylic acid segmented copolymer, the solid content of the dispersing agent is 40-70%, the amine value of the dispersing agent is 20-40 mg KOH/g, the controllable free radical polymerized acrylic acid segmented copolymer is provided with a pigment anchoring group, and the pigment anchoring group is a polar group.
Description
Technical Field
The application relates to the field of coatings, in particular to a high-saturation water-based refinish paint composition, a preparation method of the water-based refinish paint composition and application of the water-based refinish paint composition in external coating of products.
Background
Automobile repair refers to the need for local repair or repainting of the exterior coating of an automobile due to accident damage or aging over the years. Specifically, it is different from the coating production line of general mill, does not have single operation, and the motorcycle type of being scribbled, colour demand are all different, can't carry out the operation according to prescribed process order, and toast the temperature and can not exceed 60 ℃ at most, otherwise can destroy plastic accessory.
Therefore, compared with the original automobile factory paint, the automobile repair paint has obvious differences in the aspects of product composition, construction application window and the like. For example, refinish paint products contain tens to hundreds of color bases, and require the use of appropriate color bases to match the actual color of the vehicle being refinished, followed by the addition of binders (to provide paint film properties), diluents (to provide application properties), manual stirring, filtration, and spraying. For repair paint products, the color gamut space presented by the full color set system must cover all colors of the automotive factory paint, otherwise the problem that the repair paint color cannot match the color of the automobile body can occur to affect repair and traffic.
The automotive refinishing paint market in China still takes solvent type products as main materials at the present stage. However, along with the improvement of people's environmental awareness, the country has issued a series of environmental laws and regulations and policies for the coating industry, and each region has issued a specific policy for automobile repair coating successively, thereby forcefully pushing the automobile repair paint to develop towards the direction of ' oil-to-water '. On the other hand, the pursuit of automobile colors in the automobile market in recent years is more and more remarkable, and metal colors with high saturation, such as orange of the Benz DESIGNO and 27 orange of the great wall automobile, appear bright and pure, have high saturation, and are the future color development trend of the automobile. In order to better meet the environmental protection requirement of future water-based and the popular trend of automobile colors, the technical capability of developing the water-based transparent color master batch with high saturation is particularly important and significant.
At present, patents related to a high-saturation transparent color master batch preparation technology are mainly focused on the field of traditional solvent-based paint, for example, U.S. patent No. TRANSPARENT PIGMENT DISPERSION PROCESS (patent No. 4017448) discloses a preparation process of solvent-based transparent pigment color paste, and the content of the process relates to transparent orange. In recent years, there is also an invention patent application (application publication number CN106675216 a) of solvent-type transparent orange automotive refinish paint and a preparation method thereof.
However, no patent related to the preparation technology of the transparent orange color master with high saturation has been published in the field of water-based refinish paint.
In view of this, there is a need to provide a new aqueous refinish paint composition that provides a clean-colored, high-saturation aqueous refinish paint composition.
Disclosure of Invention
The purpose of the application is to provide a high-saturation water-based repair paint composition, and a preparation method and application thereof, so as to obtain the high-saturation water-based transparent repair paint composition, expand the color gamut space of a full color masterbatch and better meet the future market demands.
In order to achieve the above object, according to an aspect of the present application, there is provided a high-saturation aqueous refinish paint composition comprising: color paste, aqueous polyurethane dispersion and water; the color paste comprises transparent orange pigment and a dispersing agent, wherein the dispersing agent is a controllable free radical polymerized acrylic acid segmented copolymer, the solid content of the dispersing agent is 40-70%, the amine value of the dispersing agent is 20-40 mg KOH/g, the controllable free radical polymerized acrylic acid segmented copolymer is provided with a pigment anchoring group, and the pigment anchoring group is a polar group; preferably, the polar group includes an amine group, a carboxyl group, a phosphoric acid or phosphate group, an amide group, a carbamate group.
Such as, but not limited to: a dispersant of the type DISPRBYK-2010 of the Pick chemistry, or of the type Basf (China) Co., ltd
Ultra PX 4575 or +.>
One or more of the dispersants for Ultra PX 4585 are mixed.
In some embodiments, the fineness of the aqueous refinish paint composition is less than or equal to 5 microns.
In some embodiments, the transparent orange pigment is at least one of a pyrrolopyrrolidone pigment, a pyrene ketone pigment, an anthraquinone pigment, and a benzimidazolone pigment.
Such as, but not limited to: the model of Basoff (China) Limited is
Orange L 2985HD、/>
Orange L2990 HD or +.>
Cosmoray Orange L2950, or products of the chemical industry of clariant under the model Hostaperm Orange GR, hostatint Orange DPP 500, hostaperm Scarlet GO trans, novoperm Orange HL or PV Fast Orange H2 GL.
In the application, the orange pigment with a special chemical structure and the acrylic block copolymer matched with a specific controllable free radical polymerization are specifically selected as the dispersing agent, and the specific pigment anchoring group on the molecular chain is utilized to obtain the transparent color paste with high saturation. In addition, in the application, the resin-free system is adopted, so that the color paste which has higher concentration, is more suitable for a grinding process in a production process and has higher cost performance is obtained, and the aqueous repair paint composition product with higher concentration and finer fineness can be prepared.
In some embodiments, the aqueous polyurethane dispersion is at least one of a polycarbonate modified polyurethane dispersion, an aliphatic aqueous polyurethane dispersion, an aliphatic polycarbonate aqueous polyurethane dispersion, and an aqueous dispersion of a polyether polyurethane, and the aqueous polyurethane dispersion has an average particle size of less than or equal to 60nm.
Such as, but not limited to: model selected from commercially available model kesi polymers
UH2110 or +.>
UH2648/1 product, type number of Zhan Xin resin (China) is +.>
TW 6450/30WA, model number of Lubo company>
898, or model HYDRAN WLS-210 of DIC corporation.
In the application, the water-based repair paint composition with the shelf life of the finished product of 2-3 years is obtained by specifically selecting the water-based polyurethane dispersoid with small particle size and high molecular weight so as to solve the problem that the shelf life of the existing similar products is only 3-6 months. In addition, the aqueous polyurethane dispersions selected in this application contain high molecular weight polyurethane structures that can impart excellent overall properties to the paint film. Meanwhile, the aqueous polyurethane dispersoid selected by the application also plays a role in assisting in wetting and dispersing the transparent orange pigment in the color paste, so that the storage time of the aqueous refinish paint composition is further effectively prolonged. In addition, the water-based polyurethane dispersoid selected by the application has the characteristics of small particle size and strong permeability, reduces the chromatic aberration between a wet film and a dry film formed by the water-based repair paint composition to a certain extent, and further improves the color mixing efficiency of a construction site.
In some embodiments, the aqueous refinish paint composition comprises, based on the total mass of the aqueous refinish paint composition: 15-40% of color paste, 15-40% of aqueous polyurethane dispersion and the balance of water.
In some embodiments, the color paste comprises, based on the total mass of the color paste: 20-40% by mass of the transparent orange pigment, 10-50% by mass of the dispersing agent and the balance of water.
In some embodiments, the color paste further comprises a first auxiliary agent, the first auxiliary agent being at least one of an antifoaming agent and a wetting dispersant.
The first auxiliary primarily functions to defoaming and aid in wetting, such as, but not limited to: the type of the defoamer of the Pick chemistry is BYK-011, and the type of the winning industrial group is
Defoaming agent of Foamex 830, ++>
Wetting dispersant or +.>
One or more than one of the wetting defoamers of AD01 are mixed.
In some embodiments, the first aid is less than or equal to 10% by mass based on the total mass of the color paste.
In some embodiments, the aqueous refinish paint composition further comprises a second auxiliary agent that is at least one of a viscosity modifier, a wetting agent, a leveling agent, and a pH modifier.
The second auxiliary agent mainly plays roles of preventing sedimentation, wetting, leveling, pH adjustment and the like, such as but not limited to: selecting the wax of AQUATIX 8421 type or the wax of Basv (China) Inc. of Pick chemistry type
AS 1130 to adjust the viscosity of the aqueous refinish paint composition to enhance the anti-settling effect of the color master storage; the model selected from the Pick chemistry is BYK-345 or BYK-333, the model of winning industrial group is +.>
Twin 4100 or->
440 to promote the comprehensive effects of leveling, wetting, defoaming, etc. in construction.
In some embodiments, the pH adjuster is N, N-Dimethylethylamine (DMEA).
In some embodiments, the second adjuvant is less than or equal to 10 mass percent based on the total mass of the aqueous refinish paint composition.
In some embodiments, the aqueous refinish paint composition further comprises an organic solvent, the organic solvent being a hydrocarbon solvent.
In some embodiments, the organic solvent is at least one of isoparaffin solvent, isooctanol, ethylene glycol hexyl ether, ethylene glycol isooctyl ether, isopropanol, propylene glycol methyl ether, dipropylene glycol methyl ether, and ethylene glycol butyl ether.
In the present application, the above organic solvents specifically selected include both hydrophobic and hydrophilic types: the hydrophobic solvent is one or more of SHELLSOL TK, isooctanol, ethylene glycol hexyl ether and ethylene glycol isooctyl ether; the hydrophilic solvent is one or more of isopropanol, propylene glycol methyl ether, dipropylene glycol methyl ether and ethylene glycol butyl ether. The collocation of the organic solvents plays an important role in the adjustment of defoaming, rheological and volatilization rates of the aqueous refinish paint composition.
In some embodiments, the mass percent of the organic solvent is less than or equal to 10% based on the total mass of the aqueous refinish paint composition.
According to another aspect of the present application, there is provided a method of preparing the above aqueous refinish paint composition, comprising: a step of providing a color paste and a step of obtaining the aqueous refinish paint composition; the preparation method comprises the following steps: a step of providing a color paste and a step of obtaining the aqueous refinish paint composition; wherein,,
in the step of providing color paste, the color paste comprises transparent orange pigment and a dispersing agent, wherein the dispersing agent is a controllable free radical polymerized acrylic block copolymer, the solid content of the dispersing agent is 40-70%, the amine value of the dispersing agent is 20-40 mg KOH/g, the controllable free radical polymerized acrylic block copolymer is provided with a pigment anchoring group, and the pigment anchoring group is a polar group; preferably, the polar group includes an amine group, a carboxyl group, a phosphoric acid or phosphate group, an amide group, a carbamate group;
the step of providing color paste comprises a dispersing step and a grinding step; in the grinding step, grinding the color paste with a grinding medium so that the fineness of the aqueous refinish paint composition is less than or equal to 5 micrometers; the method comprises the steps of,
in the step of obtaining the aqueous refinish paint composition, the mill base is dispersed in an aqueous polyurethane dispersion to obtain the aqueous refinish paint composition.
In some embodiments, the grinding step is performed in a grinder, and the grinding conditions meet at least one of the following conditions: i) The grain diameter of the grinding medium of the grinder is 0.6-1.2 mm; ii) the filling rate of the grinding medium of the grinder is 75-88%; iii) The flow rate of the color paste is 150-250 kg/h; and iv) the grinding media is zirconia beads or modified zirconia beads.
In some embodiments, the step of providing color paste and the step of obtaining the aqueous refinish paint composition are performed under alkaline conditions.
In some embodiments, a method of preparing the above aqueous refinish paint composition is provided, comprising:
providing color paste: dispersing water, a dispersing agent and a first auxiliary agent in the components of the color paste for the first step, and then adding a transparent orange pigment for the second step; then, grinding the color paste in a grinder; wherein the abrasive condition satisfies at least one of the following conditions: i) The grain diameter of the grinding medium of the grinder is 0.6-1.2 mm; ii) the filling rate of the grinding medium of the grinder is 75-88%; iii) The flow rate of the color paste is 150-250 kg/h; and iv) the grinding medium is zirconia beads or modified zirconia beads; the method comprises the steps of,
the step of obtaining the aqueous refinish paint composition: and (3) performing first-step dispersion on water, aqueous polyurethane dispersion, a second auxiliary agent and an organic solvent in the components of the aqueous refinish paint composition, and then adding the ground color paste to perform second-step dispersion so as to finally obtain the aqueous refinish paint composition.
In the application, the water-based repair paint composition with high saturation and high stability is obtained by combining the specifically selected color paste components and a high-energy grinding process and then introducing special water-based polyurethane dispersion in a matching way. The aqueous polyurethane dispersion provided by the application can meet the environmental protection requirement of water-based application in the coating industry and the popular trend of automobile colors, expands the color gamut space of the whole color masterbatch, and better meets the future market demand.
Detailed Description
The technical solutions of the present application are described below in conjunction with some specific embodiments, and it should be understood by those skilled in the art that the following descriptions are illustrative and not limiting, and should not limit the scope of the present invention.
The various starting materials of the present application are commercially available, or are prepared according to methods conventional in the art, unless specifically indicated. Unless specifically defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Any method or material similar to that described may be used in the methods of the present application.
According to one embodiment of the present application, there is provided a high saturation aqueous refinish paint composition having a fineness of less than or equal to 5 microns and comprising, based on the total mass of the aqueous refinish paint composition:
15-40% of color paste;
15-40% of aqueous polyurethane dispersoid by mass percent;
less than or equal to 10 percent by mass of a second auxiliary agent;
less than or equal to 10 percent of organic solvent by mass; the method comprises the steps of,
the balance being water; wherein,,
calculated by the total mass of the color paste, the color paste comprises:
20-40% of transparent orange pigment;
10-50% of dispersing agent;
less than or equal to 10 percent of first auxiliary agent and,
the balance being water.
The dispersing agent is a controllable free radical polymerized acrylic acid segmented copolymer, the solid content of the dispersing agent is 40-70%, the amine value of the dispersing agent is 20-40 mg KOH/g, the controllable free radical polymerized acrylic acid segmented copolymer is provided with a pigment anchoring group, and the pigment anchoring group is a polar group; preferably, the polar group includes an amine group, a carboxyl group, a phosphoric acid or phosphate group, an amide group, a carbamate group.
Such as, but not limited to: a dispersant of the type DISPRBYK-2010 of the Pick chemistry, or of the type Basf (China) Co., ltd
Ultra PX 4575 or +.>
In dispersants for Ultra PX 4585One or more of the following are mixed.
The transparent orange pigment is at least one of pyrrolopyrrole dione pigment, pyrene ketone pigment, anthraquinone pigment and benzimidazolone pigment. Such as, but not limited to: the model of Basoff (China) Limited is
Orange L 2985HD、/>
Orange L2990 HD or +.>
Cosmoray Orange L2950, or products of the chemical industry of clariant under the model Hostaperm Orange GR, hostatint Orange DPP 500, hostaperm Scarlet GO trans, novoperm Orange HL or PV Fast Orange H2 GL.
The aqueous polyurethane dispersion is at least one of a polycarbonate modified polyurethane dispersion, an aliphatic aqueous polyurethane dispersion, an aliphatic polycarbonate aqueous polyurethane dispersion, and an aqueous dispersion of polyether polyurethane, and the average particle diameter of the aqueous polyurethane dispersion is less than or equal to 60nm. Such as, but not limited to: model selected from commercially available model kesi polymers
UH2110 or +.>
UH2648/1 product, type number of Zhan Xin resin (China) is +.>
TW 6450/30WA product, model number of Lubo
898, orOne or more of the products of DIC Co., ltd. Model HYDRAN WLS-210 are mixed.
The first auxiliary primarily functions to defoaming and aid in wetting, such as, but not limited to: the type of the defoamer of the Pick chemistry is BYK-011, and the type of the winning industrial group is
Defoaming agent of Foamex 830, ++>
Wetting dispersant or +.>
One or more than one of the wetting defoamers of AD01 are mixed.
The second auxiliary agent is at least one of a viscosity regulator, a wetting agent, a leveling agent and a pH regulator. The second auxiliary agent mainly plays roles of preventing sedimentation, wetting, leveling, pH adjustment and the like, such as but not limited to: selecting the wax of AQUATIX 8421 type or the wax of Basv (China) Inc. of Pick chemistry type
AS 1130 to adjust the viscosity of the aqueous refinish paint composition to enhance the anti-settling effect of the color master storage; the model selected from the Pick chemistry is BYK-345 or BYK-333, the model of winning industrial group is +.>
Twin 4100 or->
440 to promote the comprehensive effects of leveling, wetting, defoaming, etc. in construction. The pH regulator is N, N-Dimethylethylamine (DMEA).
The organic solvent is at least one of isoparaffin solvent, isooctyl alcohol, ethylene glycol hexyl ether, ethylene glycol isooctyl ether, isopropanol, propylene glycol methyl ether, dipropylene glycol methyl ether and ethylene glycol butyl ether.
The preparation method of the water-based refinish paint composition comprises the following steps:
s1: step of providing color paste
According to the formula of the color paste, water, a dispersing agent and a first auxiliary agent in all components of the color paste are dispersed for the first step, and then transparent orange pigment is added for the second step; then, grinding the color paste in a grinder; wherein the abrasive condition satisfies at least one of the following conditions: i) The grain diameter of the grinding medium of the grinder is 0.6-1.2 mm; ii) the filling rate of the grinding medium of the grinder is 75-88%; iii) The flow rate of the color paste is 150-250 kg/h; and iv) the grinding medium is zirconia beads or modified zirconia beads;
s2: step of obtaining the aqueous refinish paint composition
According to the formula of the aqueous repair paint composition, water, aqueous polyurethane dispersoid, second auxiliary agent and organic solvent in all components of the aqueous repair paint composition are dispersed for the first step, and then the milled color paste is added for the second step to obtain the aqueous repair paint composition finally.
Example 1 aqueous refinish paint composition 1
In this embodiment, there is provided an aqueous refinish paint composition 1, the aqueous refinish paint composition 1 comprising: 30kg of color paste and 15kg of
UH2648/1 resin and 10kg +.>
898 resin, 33kg neutral to slightly alkaline deionized water (pH=7-8), 5kg propylene glycol methyl ether, 2kg isopropyl alcohol, 1kg SHELLSOL TK and 0.1kg BYK-333, and 1 kg->
Twin 4100; at the same time, 2.5kg +.>
AS 1130 was viscosity adjusted and 0.4kg of DMEA was pH adjusted.
The color paste comprises: 10kg of
Cosmoray Orange L2950 pigment, 18kg neutral to slightly alkaline deionized water (pH=7 to 8), 10kg ∈>
Ultra PX 4585 dispersant, 0.4kg BYK-011 defoamer, and 1.6kg +.>
GA-210 wets the dispersant.
The preparation method of the water-based refinish paint composition 1 specifically comprises the following steps:
(1) Preparing the color paste
(1. A) 18kg neutral to slightly alkaline deionized water (pH=7 to 8), 10kg were added sequentially to a 60L draw cylinder
Ultra PX 4585 dispersant, 0.4kg BYK-011 defoamer, and 1.6kg +.>
The GA-210 wetting dispersant is placed in a high-speed dispersing machine and stirred for 20min at the speed of 1500 r/min;
(1. B) then the stirring dispersion speed was adjusted to 750r/min, and 10kg was slowly added
Cosmoray Orange L2950 pigment, and then dispersing at high speed at 2500r/min for 50min;
(1. C) circularly grinding the pre-mixed slurry after high-speed dispersion by using a NETZSCH NEOS horizontal rod pin sand mill, wherein the sand beads are zirconia beads with the particle size of 0.6-0.8 mm, the filling rate of the sand beads is 82%, and the flow rate of the slurry is 200kg/h; the actual measurement grinding residence time window is 10-20 min;
(2) Obtaining the aqueous refinish paint composition
(2. A) to a 150L draw jar, 33kg of neutral to slightly alkaline deionized water (pH=7 to 8) and 15kg were added sequentially
UH2648/1 resin, 10kg +.>
898 resin, placing in a low-speed dispersing machine, stirring at 150r/min for 10min;
(2. B) then slowly adding 8.1kg of the mixture (5 kg of propylene glycol methyl ether, 2kg of isopropanol, 1kg of SHELLSOL TK and 0.1kg of BYK-333 auxiliary agent were mixed uniformly in advance in a small 15L draw pot), and then adding 1kg of
Twain 4100, continuing to disperse for 10min at a low speed under the condition of 200 r/min;
(2. C) subsequently adding 30kg of the color paste obtained in the step (1), dispersing for 30min at 300r/min, and confirming that the fineness of the aqueous refinish paint composition 1 is less than or equal to 5 μm.
In this example, during the milling process of step (1), the particle size data of the color paste at different milling residence times were measured using dynamic light scattering DLS to obtain the particle size data shown in table 1.
TABLE 1 particle size data of the color paste at different grinding residence times
| Grinding residence time | D10/nm | D50/nm | D90/nm |
| 10min | 119 | 208 | 286 |
| 20min | 87 | 176 | 277 |
| 30min | 89 | 182 | 296 |
| 40min | 87 | 166 | 301 |
Further, a color difference meter test was carried out after scraping with a 150 μm blade to test the color of a paint film formed of the aqueous refinish paint composition 1 provided in this example, and data shown in table 2 were obtained.
TABLE 2 color data for aqueous refinish paint composition 1 under squeegee conditions
The color difference data between white and black matrixes included by the color data of table 2 is sufficient to demonstrate that: the aqueous refinish paint composition 1 of this example has high saturation and high transparency characteristics.
Further, the thermal storage stability of the aqueous refinish paint composition 1 of this example was further tested, and the viscosity, fineness, pH and color change of the same aqueous refinish paint composition 1 after different thermal storage periods were tested, to obtain the data shown in table 3.
TABLE 3 viscosity, fineness, pH and color change data for various heat storage times for aqueous refinish paint composition 1
As can be seen from the data in table 3, the aqueous refinish paint composition 1 of this example has good thermal storage stability, and meets the special requirements of long-term storage in the refinish paint industry. Moreover, experiments show that after 40 ℃ for 6 months, the paint film performance and the construction performance formed by the water-based repair paint composition 1 still meet the requirements of the repair paint industry.
Example 2 aqueous refinish paint composition 2
In this embodiment, there is provided an aqueous refinish paint composition 2, the aqueous refinish paint composition 2 comprising: 30kg of color paste and 15kg of
UH2648/1 resin and 10kg +.>
898 resin, 33kg neutral to slightly alkaline deionized water (pH=7-8), 5kg propylene glycol methyl ether, 2kg isopropyl alcohol, 1kg SHELLSOL TK and 0.1kg BYK-333, and 1 kg->
Twin 4100; at the same time, 2.5kg +.>
AS 1130 was viscosity adjusted and 0.4kg of DMEA was pH adjusted.
The color paste comprises: 10kg of
Cosmoray Orange L2950 pigment, 18kg neutral to slightly alkaline deionized water (pH=7 to 8), 10kg ∈>
Ultra PX 4585 dispersant, 0.4kg BYK-011 defoamer, and 1.6kg +.>
GA-210 wets the dispersant.
The preparation method of the water-based refinish paint composition 2 specifically comprises the following steps:
(1) Preparing the color paste
(1. A) 18kg neutral to slightly alkaline deionized water (pH=7 to 8), 10kg were added sequentially to a 60L draw cylinder
Ultra PX 4585 dispersant, 0.4kg BYK-011 defoamer, and 1.6kg +.>
The GA-210 wetting dispersant is placed in a high-speed dispersing machine and stirred for 20min at the speed of 1500 r/min;
(1. B) then the stirring dispersion speed was adjusted to 750r/min, and 10kg was slowly added
Cosmoray Orange L2950 pigment, and then dispersing at high speed at 2500r/min for 50min;
(1. C) circularly grinding the pre-mixed slurry after high-speed dispersion by using a NETZSCH NEOS horizontal rod pin sand mill, wherein the sand beads are zirconia beads with the particle size of 0.8-1.0 mm, the filling rate of the sand beads is 85%, and the flow rate of the slurry is 200kg/h; the actual measurement grinding residence time window is 20-40 min;
(2) Obtaining the aqueous refinish paint composition
(2. A) to a 150L draw jar, 33kg of neutral to slightly alkaline deionized water (pH=7 to 8) and 15kg were added sequentially
UH2648/1 resin, 10kg +.>
898 resin, placing in a low-speed dispersing machine, stirring at 150r/min for 10min;
(2. B) then slowly adding 8.1kg of the mixture (5 kg of propylene glycol methyl ether, 2kg of isopropanol, 1kg of SHELLSOL TK and 0.1kg of BYK-333 auxiliary agent were mixed uniformly in advance in a small 15L draw pot), and then adding 1kg of
Twain 4100, continuing to disperse for 10min at a low speed under the condition of 200 r/min;
(2. C) subsequently adding 30kg of the color paste obtained in the step (1), dispersing for 30min at 300r/min, and confirming that the fineness of the aqueous refinish paint composition 2 is less than or equal to 5 μm.
In this example, during the milling process of step (1), the particle size data of the color paste at different milling residence times were measured using dynamic light scattering DLS, and the particle size data shown in table 4 were obtained.
TABLE 4 particle size data for the color paste at different milling residence times
| Grinding residence time | D10/nm | D50/nm | D90/nm |
| 5min | 148 | 225 | 327 |
| 10min | 128 | 231 | 367 |
| 20min | 102 | 191 | 316 |
| 25min | 92 | 182 | 302 |
| 30min | 88 | 172 | 307 |
| 40min | 88 | 179 | 294 |
Example 3 aqueous refinish paint composition 3
In this embodiment, there is provided an aqueous refinish paint composition 3, the aqueous refinish paint composition 3 comprising: 30kg of color paste, 25kg of Covestro
UH2110 resin, 33kg neutral to slightly alkaline deionized water (pH=7-8), 5kg propylene glycol methyl ether, 2kg isopropyl alcohol, 1kg SHELLSOL TK and 0.1kg BYK-333, and 1 kg->
Twin 4100; at the same time, 2.5kg +.>
AS 1130 was viscosity adjusted and 0.4kg of DMEA was pH adjusted.
The color paste comprises: 10kg of
Cosmoray Orange L2950 pigment, 18kg neutral to slightly alkaline deionized water (pH=7 to 8), 10kg ∈>
Ultra PX 4585 dispersant, 0.4kg BYK-011 defoamer, and 1.6kg +.>
GA-210 wets the dispersant.
The preparation method of the water-based refinish paint composition 3 specifically comprises the following steps:
(1) Preparing the color paste
(1. A) 18kg neutral to slightly alkaline deionized water (pH=7 to 8), 10kg were added sequentially to a 60L draw cylinder
Ultra PX 4585 dispersant, 0.4kg BYK-011 defoamer, and 1.6kg +.>
The GA-210 wetting dispersant is placed in a high-speed dispersing machine and stirred for 20min at the speed of 1500 r/min;
(1. B) then the stirring dispersion speed was adjusted to 750r/min, and 10kg was slowly added
Cosmoray Orange L2950 pigment, and then dispersing at high speed at 2500r/min for 50min;
(1. C) circularly grinding the pre-mixed slurry after high-speed dispersion by using a NETZSCH NEOS horizontal rod pin sand mill, wherein the sand beads are zirconia beads with the particle size of 0.6-0.8 mm, the filling rate of the sand beads is 82%, and the flow rate of the slurry is 200kg/h; the actual measurement grinding residence time window is 10-20 min;
(2) Obtaining the aqueous refinish paint composition
(2. A) to a 150L draw jar, 33kg neutral to slightly alkaline deionized water (pH=7-8), 25kg Covesro were added sequentially
UH2110 resin was placed in a low speed disperser and stirred at 150r/min for 10min;
(2. B) then slowly adding 8.1kg of the mixture (5 kg of propylene glycol methyl ether, 2kg of isopropanol, 1kg of SHELLSOL TK and 0.1kg of BYK-333 auxiliary agent were mixed uniformly in advance in a small 15L draw pot), and then adding 1kg of
Twain 4100, continuing to disperse for 10min at a low speed under the condition of 200 r/min;
(2. C) subsequently adding 30kg of the color paste obtained in the step (1), dispersing for 30 minutes at 300r/min, and confirming that the fineness of the aqueous refinish paint composition 3 is less than or equal to 5 μm.
Experiments show that the water-based repair paint composition 3 of the embodiment has excellent paint film performance and thermal storage stability, and completely meets the industrial requirements of repair paint. In view of the use in this embodiment
The permeability of UH2110 resin is better than that of example 1 or example 2 +.>
UH2648/1, therefore, the aqueous refinish paint composition 3 of this example has less dry-wet film color difference than example 1.
Comparative example 1
In this comparative example a comparative aqueous phase is providedRefinish paint composition 1 the same amount of orange pigment, model Novoperm Orange HL 70 from the chemical industry of clahn was substituted for the aqueous refinish paint composition 1 of example 1
Cosmoray Orange L2950 the remaining components are identical to the components and contents of the aqueous refinish paint composition 1 described in example 1.
The comparative aqueous refinish paint composition 1 of this comparative example was prepared in exactly the same manner as the aqueous refinish paint composition 1 described in example 1.
In the same test manner as in example 1, a color difference meter test was carried out after scraping 150 μm, the color of a paint film formed from the comparative aqueous refinish paint composition 1 provided in this comparative example was tested, and the data shown in table 5 were obtained.
TABLE 5 color data for comparative aqueous refinish paint composition 1 under squeegee conditions
As can be seen from a comparison of the data in table 5 and table 2, the color difference data (3.04) between white and black matrixes after doctoring the comparative aqueous refinish paint composition 1 of this comparative example is much smaller than the color difference data (64.83) of the aqueous refinish paint composition 1 of example 1, indicating that the transparency of the comparative aqueous refinish paint composition 1 of this example is far less than the aqueous refinish paint composition 1 of example 1.
Comparative example 2
In this comparative example, a comparative aqueous refinish paint composition 2 was provided, which was manufactured by basf (china) inc, a non-controlled radical polymerization technique
Ultra PA 4550 dispersant equivalent replacement of +.f. in aqueous refinish paint composition 1 of example 1>
The Ultra PX 4585 dispersant, the remaining components were all identical to the components and content of the aqueous refinish paint composition 1 described in example 1.
The comparative aqueous refinish paint composition 2 of this comparative example was prepared in exactly the same manner as the aqueous refinish paint composition 1 described in example 1.
In the range of 10 to 40 minutes of the grinding residence time, the measured D50 particle size data of the color paste of the comparative aqueous refinish paint composition 2 of this comparative example is always greater than 300nm, and the D50 particle size (-200 nm) level in example 1 cannot be reached.
Comparative example 3
In this comparative example, a comparative aqueous refinish paint composition 3 is provided having exactly the same composition as the aqueous refinish paint composition 1 of example 1, and the method of preparation is also essentially the same, with cyclic grinding using only a non-stick horizontal sand mill NETZSCH LABSTAR instead of NETZSCH NEOS described in example 1, and the other preparation steps are exactly the same as example 1.
In the interval of 10-40min of grinding residence time, the measured D50 particle size data of the color paste of the comparative aqueous refinish paint composition 3 of this comparative example is always greater than 250nm, and cannot reach the D50 particle size (-200 nm) level in example 1.
Comparative example 4
In this comparative example a comparative aqueous refinish paint composition 4 is provided containing no 15kg
UH2648/1 resin and 10kg +.>
898 resin, the remaining components were identical to the components and amounts of the aqueous refinish paint composition 1 of example 1.
Also, the comparative aqueous refinish paint composition 1 of this comparative exampleSubstantially the same as the preparation method of the aqueous refinish paint composition 1 described in example 1, the aqueous refinish paint composition contains no additives
UH2648/1 resin and +.>
898 resin step.
The comparative aqueous refinish paint composition 4 of this comparative example was tested for thermal storage stability in the same test method as in example 1, obtaining the data shown in table 6.
TABLE 6 viscosity, fineness, pH and color change data for various heat storage times for comparative aqueous refinish paint composition 4
| Comparative example 4 | Fineness/. Mu.m | B6 viscosity/mPas |
| Initial state | 5μm | 1826 |
| 40 ℃ for 2 months | 15μm | 7700 |
| 40 ℃ for 4 months | 50μm | 33900 |
As can be seen from a comparison of the data in table 6 and table 3, the thermal storage stability of the comparative aqueous refinish paint composition 4 of this comparative example lacking the aqueous polyurethane dispersion is significantly reduced compared to the aqueous refinish paint composition 1 of example 1, and the special requirement for long-term storage in the refinish paint industry cannot be satisfied.
Comparative example 5
In this comparative example, a comparative aqueous refinish paint composition 5 was provided, which was of the type 25kg of basf (chinese) limited
PU 1035W resin was substituted for 15kg in the aqueous refinish paint composition 1 of example 1
UH2648/1 resin and 10kg +.>
898 resin, the remaining components were identical to the components and amounts of the aqueous refinish paint composition 1 of example 1.
The comparative aqueous refinish paint composition 1 of this comparative example was prepared in the same manner as the aqueous refinish paint composition 1 described in example 1.
Experiments show that the medicine composition has the advantages of high purity,
the PU 1035W resin has small molecular weight and contains more hydroxyl hydrophilic functional groups, and can have certain negative influence on the performance of a paint film under the condition that a repair paint system cannot be further crosslinked. Using
The comparative aqueous refinish paint composition 5 of PU 1035W resin can be examined by thermal storage stability of 40 ℃ for 6 months, but the paint film has poor water resistance, seriously foams on the surface after soaking for 10 days at 40 ℃, and the water resistance of the paint film cannot meet the requirements of the refinish paint industry.
The present application has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of implementation of the present application. It must be noted that the disclosed embodiments do not limit the scope of the present application. On the contrary, modifications and equivalent arrangements included within the spirit and scope of the claims are intended to be included within the scope of the present application.
Claims (10)
1.A high saturation aqueous refinish paint composition, characterized in that it comprises: color paste, aqueous polyurethane dispersion and water; wherein,,
the color paste comprises transparent orange pigment and dispersing agent,
the dispersing agent is a controllable free radical polymerized acrylic acid segmented copolymer, the solid content of the dispersing agent is 40-70%, the amine value of the dispersing agent is 20-40 mg KOH/g, the controllable free radical polymerized acrylic acid segmented copolymer is provided with a pigment anchoring group, and the pigment anchoring group is a polar group; preferably, the polar group includes an amine group, a carboxyl group, a phosphoric acid or phosphate group, an amide group, a carbamate group.
2. The aqueous refinish paint composition according to claim 1 wherein the fineness of the aqueous refinish paint composition is less than or equal to 5 microns.
3. The aqueous refinish paint composition according to claim 1 wherein the transparent orange pigment is at least one of a pyrrolopyrroldione pigment, a pyrene ketone pigment, an anthraquinone pigment and a benzimidazolone pigment.
4. A waterborne refinish paint composition according to any of claims 1 to 3, wherein the waterborne polyurethane dispersion is at least one of a polycarbonate modified polyurethane dispersion, an aliphatic waterborne polyurethane dispersion, an aliphatic polycarbonate waterborne polyurethane dispersion, and an aqueous dispersion of a polyether polyurethane, and wherein the waterborne polyurethane dispersion has an average particle size of less than or equal to 60nm.
5. The aqueous refinish paint composition according to claim 4 wherein the aqueous refinish paint composition comprises, based on the total mass of the aqueous refinish paint composition: 15-40% of color paste, 15-40% of aqueous polyurethane dispersion and the balance of water; preferably, the color paste comprises, calculated as the total mass of the color paste: 20-40% by mass of the transparent orange pigment, 10-50% by mass of the dispersing agent and the balance of water.
6. The aqueous refinish paint composition according to claim 5 wherein the color paste further comprises a first auxiliary agent, the first auxiliary agent being at least one of a defoamer and a wetting dispersant; preferably, the mass percentage of the first auxiliary agent is less than or equal to 10 percent calculated by the total mass of the color paste.
7. The aqueous refinish paint composition according to claim 5, further comprising a second auxiliary agent, said second auxiliary agent being at least one of a viscosity modifier, a wetting agent, a leveling agent, and a pH modifier; the method comprises the steps of carrying out a first treatment on the surface of the Preferably, the mass percentage of the second auxiliary agent is less than or equal to 10% based on the total mass of the aqueous refinish paint composition.
8. The aqueous refinish paint composition according to claim 7, further comprising an organic solvent, wherein the organic solvent is a hydrocarbon solvent; preferably, the organic solvent is at least one of isoparaffin solvent, isooctanol, ethylene glycol hexyl ether, ethylene glycol isooctyl ether, isopropanol, propylene glycol methyl ether, dipropylene glycol methyl ether, and ethylene glycol butyl ether; more preferably, the mass percentage of the organic solvent is less than or equal to 10% based on the total mass of the aqueous refinish paint composition.
9. A method of preparing a high saturation aqueous refinish paint composition, the method comprising: a step of providing a color paste and a step of obtaining the aqueous refinish paint composition; wherein,,
in the step of providing color paste, the color paste comprises transparent orange pigment and a dispersing agent, wherein the dispersing agent is a controllable free radical polymerized acrylic block copolymer, the solid content of the dispersing agent is 40-70%, the amine value of the dispersing agent is 20-40 mg KOH/g, the controllable free radical polymerized acrylic block copolymer is provided with a pigment anchoring group, and the pigment anchoring group is a polar group; preferably, the polar group includes an amine group, a carboxyl group, a phosphoric acid or phosphate group, an amide group, a carbamate group;
the step of providing color paste comprises a dispersing step and a grinding step; in the grinding step, grinding the color paste with a grinding medium so that the fineness of the aqueous refinish paint composition is less than or equal to 5 micrometers; the method comprises the steps of,
in the step of obtaining the aqueous refinish paint composition, dispersing the mill base in an aqueous polyurethane dispersion to obtain the aqueous refinish paint composition;
preferably, the grinding step is performed in a grinder, and the grinding conditions meet at least one of the following conditions:
i) The grain diameter of the grinding medium of the grinder is 0.6-1.2 mm;
ii) the filling rate of the grinding medium of the grinder is 75-88%;
iii) The flow rate of the color paste is 150-250 kg/h; and
iv) the grinding medium is zirconia beads or modified zirconia beads;
more preferably, the step of providing color paste and the step of obtaining the aqueous refinish paint composition are performed under alkaline conditions.
10. Use of the aqueous refinish paint composition according to any of claims 1 to 8 in the external or internal coating of a product.
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