CN113956727B

CN113956727B - Colorant composition and coated article

Info

Publication number: CN113956727B
Application number: CN202111270927.3A
Authority: CN
Inventors: 余乃我
Original assignee: Guangdong Huarun Paints Co Ltd
Current assignee: Guangdong Huarun Paints Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2023-02-17
Anticipated expiration: 2041-10-29
Also published as: CN113956727A; WO2023072128A1

Abstract

The present application relates to colorant compositions and coated articles. The colorant composition comprises a component A and a component B, wherein the component A comprises at least one water-dilutable acrylic resin and water, the component B comprises at least one colorant, wherein the at least one water-dilutable acrylic resin has at least one hydrophilic group and at least one self-crosslinking functional group, and the particle size of the at least one water-dilutable acrylic resin in the component A is from 0.01 μm to 0.1 μm. The composition described herein has the advantages of excellent wiping properties, fast drying speed, color development, surface resistance, etc., and can have two-in-one use of a wiping agent and a primer, thereby saving at least one seal primer in an open process, saving time and cost.

Description

Colorant composition and coated article

Technical Field

The present application relates to a colorant composition and a coated article. In particular, the present application relates to colorant compositions for porous substrates, and coated articles comprising a coating formed from the colorant compositions.

Background

Colorants are often applied to porous substrates (e.g., wood) and may be used, for example, to provide color while allowing some of the natural color and texture of the substrate to show through. Historically, there are two basic classes of wood stains: water-based and oil-based colorants.

With environmental concerns and the implementation of new environmental regulations, oil-based colorants are limited by the release of significant amounts of volatile organic materials.

Water-based colorants are receiving increasing attention in order to replace oil-based colorants. Researchers have attempted to develop some water-based colorants, however, existing water-based colorants suffer from drawbacks during construction, such as poor scrubbability, poor catheterization, non-uniform and non-vivid color, slow drying rate, and poor adhesion. The water-based coloring agents which are used more at present are mainly water-based acrylic emulsion systems or water-based alkyd systems. However, the main problems of the aqueous acrylic emulsion system include general catheter-entering performance, quick surface drying, poor wiping performance, poor color rendering property and the like; the major problems with waterborne alkyd systems include slow, even incomplete drying after wiping, poor interlayer adhesion, poor paint film resistance, and the like. These problems make the existing water-based colorant have poor performance, complicated process and high cost, thereby affecting the wide popularization and application. Furthermore, the colorant typically requires a seal or semi-seal treatment with a primer during application to achieve a brighter, more uniform color.

Disclosure of Invention

In view of this, there is a need for a colorant composition that exhibits improved properties with respect to at least one of the problems above. In particular, there is a need for colorants that have a good balance of properties in terms of wipe properties, drying speed, color development, surface resistance, and the like. Colorant compositions having a two-in-one use of a colorant and a primer are also highly desirable.

The above objects can be achieved by the coating composition described herein.

A first aspect of the present application provides a composition comprising component a and component B, wherein component a comprises at least one water-dilutable acrylic resin and water, said component B comprises at least one colorant, wherein the at least one water-dilutable acrylic resin has at least one hydrophilic group and at least one self-crosslinking functional group, and the (average) particle size of the at least one water-dilutable acrylic resin in component a is from 0.01 μ ι η to 0.1 μ ι η.

A second aspect of the present application provides a coated article comprising a substrate and a composition described herein or a cured coating formed therefrom at least partially coated on the substrate.

In the compositions described herein, a water-dilutable acrylic resin is employed as the main resin, which is present in component a in the form of smaller particle sizes. The inventors have found that the compositions described herein can have a good balance of properties in two or more of wipe, dry speed, color development, surface resistance, intercoat adhesion, fill, and anti-beading. Moreover, the compositions described herein may have a two-in-one use of a stain remover and a primer, which can save at least one seal coat during construction, thereby saving time and cost. The compositions described herein can have both good overall properties and two-in-one utility.

The above summary of the present invention is not intended to describe each disclosed embodiment or every implementation of the present invention. Illustrative embodiments are more particularly exemplified in the following description. In various places throughout the application, guidance is provided through lists of examples, which can be used in various combinations. In each case, the lists described are only intended to provide a combination of representative examples and should not be construed as an exclusive list.

The details of one or more implementations of the application are set forth in the description below and the accompanying drawings. Other features, objects, and advantages of the application will be apparent from the description and drawings, and from the claims.

Drawings

Fig. 1 shows photographs of three protocols in a sealing process of a shallow catheter substrate, wherein (a) is a photograph of a protocol employing a seal coat and a comparative sample, (b) is a photograph of a protocol employing no seal coat and a comparative sample, and (c) is a photograph of a protocol employing no seal coat and a composition herein.

Fig. 2 shows photographs of three protocols in an open process for a deep conduit substrate, where (a) is a photograph of a protocol employing a wash coat and a comparative sample, (b) is a photograph of a protocol employing no wash coat and a comparative sample, and (c) is a photograph of a protocol employing no wash coat and employing the composition herein.

Definition of selection

The following terms used herein have the following meanings, unless otherwise specified.

As used herein, unless otherwise indicated, "a", "an", "the", "at least one" and "one or more" and instances where no numerical word is used, are used interchangeably. Thus, for example, a coating composition comprising "an" additive can be interpreted to mean that "one or more" additives are included in the coating composition. The use of a singular form herein is intended to include the plural form as well, unless the context clearly indicates otherwise.

The use of the terms "comprising," "including," "containing," and "having" are generally to be construed as open-ended and non-limiting unless otherwise expressly specified. For example, where a composition is described as including or comprising specific components, optional components not contemplated by the present invention are not contemplated to be excluded from the composition, and it is contemplated that the composition may consist of or consist of the recited components, or where a method is described as including or comprising specific process steps, optional process steps not contemplated by the present invention are not contemplated to be excluded from the method, and the method may consist of or consist of the recited process steps.

In the present application, when it is stated that an element or component is included in and/or selected from a list of recited elements or components, it is understood that the element or component can be any one of the recited elements or components and can be selected from a group consisting of two or more of the recited elements or components.

For the sake of brevity, only some numerical ranges are explicitly disclosed herein. It should be understood that any lower limit combined with any upper limit to form a range falls within the explicit disclosure of this application; ranges formed by combining any lower limit with other lower limits also belong to the disclosure explicitly made in this application, and ranges formed by combining any upper limit with other upper limits also belong to the disclosure explicitly made in this application.

Every point or individual value between the endpoints of a range is encompassed within the range unless otherwise indicated. For example, a range of 1 to 5 encompasses the values 1, 1.5, 2, 2.75, 3, 3.80, 4, 5, etc. Moreover, the disclosed numerical ranges include all subranges within the broad range, for example, a range of 1 to 5 includes subranges 1 to 4, 1.5 to 4.5, 1 to 2, etc. Thus, each point or individual value can be combined as a lower or upper limit with any other point or individual value or with other lower or upper limits, and the resulting range falls within the explicit disclosure of this application.

As used herein, the term "or" is inclusive. That is, the phrase "A or (or) B" means "A, B, or both A and B," and may also be abbreviated as "A and/or B. More specifically, either of the following conditions satisfies the condition "a or B": a is true (or present) and B is false (or not present); a is false (or not present) and B is true (or present); or both a and B are true (or present). In contrast, an exclusive "or" is referred to herein, for example, by terms such as "either A or B" and "one of A or B".

In the context of describing a composition as being free of an ingredient, the term "free" means that the composition does not contain the ingredient that is intentionally added. In view of the complexity of the particular composition of the components in the actual formulation process, the phrase "free of an ingredient" may be understood to mean that the composition comprises less than 1 wt% of such ingredient, more preferably less than 0.5 wt%, even more preferably less than 0.2 wt%, and most preferably less than 0.1 wt%, based on the total weight of the composition.

Herein, the term "dispersion" conforms to the definition in the IUPAC general of Chemical nomenclature (2007), which defines a dispersion as a material comprising more than one phase, wherein at least one phase consists of finely divided phase domains distributed throughout the continuous phase domain, typically within the colloidal particle size range.

As used herein, the term "dispersion" refers to a mixture of a dispersible polymer and a dispersing medium (solvent or carrier fluid). The term "dispersion" is intended to encompass the term "solution" unless otherwise stated.

As used herein, the term "aqueous dispersion" means that the dispersion medium (solvent or carrier fluid) in the dispersion comprises primarily or primarily water. For example, in some embodiments, the dispersion medium comprises at least about 50 wt.%, preferably at least about 60 wt.%, more preferably at least 70 wt.% and up to about 99 wt.%, up to about 100 wt.% water, based on the total weight of the dispersion medium. For example, the dispersion medium comprises about 80 wt%, about 85 wt%, or about 95 wt% water, based on the total weight of the dispersion medium. The term "aqueous dispersion" is intended to include the term solution system, "water-dilutable" system or emulsion system with a relatively high amount of water.

As used herein, the term "aqueous dispersion of a resin" refers to a stable dispersion of the resin (i.e., polymer) in particulate form in an aqueous liquid medium, optionally with the aid of suitable dispersing aids such as surfactants, cosolvents. For example, stable dispersions do not separate into immiscible layers when stored at 49 ℃ (120 ° F) or when subjected to physical force (such as vibration) for a period of at least two weeks.

The term "emulsion" refers to, unless otherwise indicated, an emulsion of a liquid polymer or a polymer dissolved in an organic solvent to form a solution, emulsified in water with an emulsifier, typically having a large average particle size (e.g., 0.2 to 1 μm) and an opaque appearance. The term "water-dilutable" resin means that the resin is capable of being diluted with water without emulsification by the addition of an emulsifier so that the resin is dispersed in water to form a stable aqueous dispersion, typically having a small average particle size (e.g., 0.01 to 0.1 μm, preferably 0.015 to 0.05 μm, e.g., about 0.03 μm) and a transparent appearance. It can be seen that the water dilutable resins are quite different from the resins that need to be emulsified to form an emulsion.

The term "self-crosslinking," when used in such context of self-crosslinking polymers, means that the polymers are capable of participating in a crosslinking reaction with themselves and/or other polymers in the absence of an external crosslinking agent to form covalent linkages therebetween. Typically, this crosslinking reaction is carried out by reaction of complementary reactive functional groups present on the self-crosslinking polymer itself or on two separate molecules of the self-crosslinking polymer.

When used in the context of "a coating applied to a surface or substrate," the term "over … …" includes coatings applied directly or indirectly to a surface or substrate. Thus, for example, a coating applied to a primer layer on a substrate is counted as a coating applied to the substrate.

Unless otherwise stated, reference to a "(meth) acrylate" compound (where methyl is in parentheses) is meant to include both acrylate and methacrylate compounds.

The terms "preferred" and "preferably" refer to embodiments of the present application that may provide certain benefits under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, and is not intended to exclude other embodiments from the scope of the application.

Detailed Description

According to a first aspect of the present application there is provided a composition comprising component a and component B, wherein component a comprises at least one water dilutable acrylic resin and water and component B comprises at least one colorant. The at least one water-dilutable acrylic resin has at least one hydrophilic group and at least one self-crosslinking functional group, and the particle size of the at least one water-dilutable acrylic resin in component a is 0.01 μm to 0.1 μm.

In some embodiments, the water-dilutable acrylic resin is obtained by reacting (a) at least one ethylenically unsaturated monomer having at least one self-crosslinking functional group, at least one ethylenically unsaturated monomer having a hydrophilic group, or a combination thereof. Optionally, at least one crosslinking agent (b) may also be added to the reaction.

The self-crosslinking (self-crosslinkable) functional group may be a ketocarbonyl or epoxy group, a hydrolyzable group, or an aziridinyl group, depending on the desired crosslinking reaction. In some embodiments, the at least one ethylenically unsaturated monomer having at least one self-crosslinking functional group in (a) comprises at least one ketocarbonyl-or epoxy-containing ethylenically unsaturated monomer, at least one hydrolyzable group-containing ethylenically unsaturated monomer, at least one aziridinyl-containing ethylenically unsaturated monomer, or combinations thereof.

In some embodiments, the at least one ketone carbonyl-or epoxy-containing ethylenically unsaturated monomer comprises diacetone acrylamide, methyl vinyl ketone, acetoacetoxyethyl (meth) acrylate, glycidyl (meth) acrylate, (meth) allyl glycidyl ether, 1-allyloxy-3,4-butylene oxide, 1- (3-butenyloxy) -2,3-propylene oxide, 4-vinyl-1-cyclohexane-1,2-epoxide, or a combination thereof.

In some embodiments, the hydrolyzable group in the at least one hydrolyzable group-containing ethylenically unsaturated monomer may be an alkoxysilyl group, for example a C1-4 alkoxysilyl group (such as methoxysilyl, ethoxysilyl). <xnotran> , , , , , , , , , (2- ) , , ,3- ( ) ,3- ( ) ,3- ( ) ,3- ( ) , , , (2- ) , , , ( ) , , , , , ,3- , , , ( ) , , , , ,2- ,2- , </xnotran> 2-acryloxyethyltriethoxysilane, 2-methacryloxyethyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-acryloxypropylmethyldimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-acryloxypropylmethyldichlorosilane, 3-methacryloxypropylmethyldichlorosilane, 3-acryloxypropyltris (2-methoxyethoxy) silane, 3-methacryloxypropyltris (2-methoxyethoxy) silane, or a combination thereof.

In some embodiments, the at least one ethylenically unsaturated monomer containing a cyclic ethylenimine group comprises 2- (1-cyclic ethylenimine) ethyl (meth) acrylate, 2- (1-cyclic ethylenimine) propyl (meth) acrylate, 3- (1-cyclic ethylenimine) propyl (meth) acrylate, or a combination thereof.

In some embodiments, in the at least one water-dilutable acrylic resin, the at least one ethylenically unsaturated monomer having hydrophilic groups comprises at least one hydroxyl-containing ethylenically unsaturated monomer, at least one carboxyl-containing ethylenically unsaturated monomer, at least one amido-containing ethylenically unsaturated monomer, or a combination thereof.

Examples of the at least one hydroxyl group-containing ethylenically unsaturated monomer may include, but are not limited to, hydroxyalkyl esters of unsaturated fatty acids [ e.g., mono-or dihydroxy C2-6 alkyl esters of carboxylic acids, such as hydroxy C2-6 alkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate and 4-hydroxybutyl (meth) acrylate, mono-or dihydroxy C2-6 alkyl maleates such as 2-hydroxyethyl methyl maleate, di (2-hydroxypropyl) maleate ]; and aliphatic, alicyclic or aromatic vinyl compounds having a hydroxyl group (e.g., α -hydroxystyrene). In some embodiments, the at least one ethylenically unsaturated monomer containing a hydroxyl group comprises a hydroxyalkyl ester of (meth) acrylic acid, a hydroxyalkyl ester of maleic acid, or a combination thereof. Specifically, the at least one ethylenically unsaturated monomer containing a hydroxyl group may comprise hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, N-methylolacrylamide, 2-hydroxyethyl methyl maleate, di (2-hydroxypropyl) maleate, or a combination thereof.

Examples of the at least one carboxyl group-containing ethylenically unsaturated monomer may include, but are not limited to, unsaturated carboxylic acids or anhydrides thereof, such as (meth) acrylic acid, crotonic acid, isocrotonic acid, ethacrylic acid, propylacrylic acid, isopropylacrylic acid, itaconic acid, maleic anhydride, and fumaric acid; salts thereof, such as alkali metal salts, alkaline earth metal salts, ammonium salts, amine salts; and half esters of unsaturated polycarboxylic acids or their anhydrides with linear or branched alcohols having from 1 to 20 carbon atoms, such as monomethyl maleate, monoethyl maleate, 2-ethylhexyl maleate. In some embodiments, the at least one ethylenically unsaturated monomer containing a carboxyl group comprises (meth) acrylic acid, crotonic acid, isocrotonic acid, ethacrylic acid, propylacrylic acid, isopropylacrylic acid, itaconic acid, maleic anhydride, fumaric acid, or combinations thereof.

Examples of the at least one amido-containing ethylenically unsaturated monomer may include, but are not limited to, C2-8 carboxylic acid amides that may be substituted with a substituent, such as (meth) acrylamide, α -ethylmethyl (meth) acrylamide, N-methyl (meth) acrylamide, N-butoxymethyl (meth) acrylamide, diacetone (meth) acrylamide. Examples of the substituent include C1-4 alkyl, C1-4 alkoxy, C1-4 acyl and the like. In some embodiments, the at least one amido-containing ethylenically unsaturated monomer comprises (meth) acrylamide, α -ethylmethyl (meth) acrylamide, N-methyl (meth) acrylamide, N-butoxymethyl (meth) acrylamide, diacetone (meth) acrylamide, or a combination thereof.

In some embodiments, (b) optionally at least one crosslinking agent may also be added in the reaction to prepare the water-dilutable acrylic resin. Any suitable crosslinking agent known in the art may be used. For example, the crosslinker can be a hydrazide. Commonly used hydrazides are dihydrazides and polyhydrazides, examples of dihydrazides include carbonic, oxalic, succinic, adipic, azelaic, sebacic dihydrazides. For example, adipic acid dihydrazide, azelaic acid dihydrazide, sebacic acid dihydrazide, or a combination thereof may be used as the crosslinking agent. Examples of polyhydrazides include 3,3,3-nitrilotripropionohydrazide [ N (CH) ₂ CH ₂ CONHNH ₂ ) ₃ ]With N, N, N ', N' -ethylenediaminetetraacetic acid dihydrazide [ (H) ₂ NHNCOCH ₂ CH ₂ ) ₂ NCH ₂ CH ₂ N(CH ₂ CH ₂ CONHNH ₂ ) ₂ ]N-amino-polyacrylamide having a degree of polymerization of 100 or less and containing about 10mol% of hydrazideAnd so on.

In some embodiments, component a may also comprise a crosslinking agent. The amount of cross-linking agent can be easily selected by those skilled in the art according to the actual need. For example, the amount of crosslinking agent may be 0 to 0.8 wt%, such as 0.1 to 0.5 wt%, based on the total weight of component a. The preferred mode of crosslinking agent is the same as described above.

In some embodiments, the water-dilutable acrylic resins herein are synthesized by free-radical solution polymerization in at least one organic solvent.

In the compositions described herein, the water-dilutable acrylic resin has a minor particle size in component A of 0.01 to 0.1 μm, for example 0.01 to 0.07 μm, preferably 0.015 to 0.05 μm, more preferably 0.01 to 0.03 μm. The "particle diameter" herein means an average particle diameter, which can be measured by a laser light scattering method. For example, the measurement can be performed using a commercially available laser particle size analyzer. In general, it is believed that the measured average particle size is the D50, or Dv50. The specific measurement method and measurement conditions can be easily determined by those skilled in the art.

In some embodiments, the water-dilutable acrylic resin is used in the form of a resin solution. The water-dilutable acrylic resin may have a solids content of 35-50%. In some preferred embodiments, the water-dilutable acrylic resin may have a solids content of 38-45%, more preferably 40-42%, for example about 41%. In actual production and use, water-dilutable acrylic resins are usually purchased and used directly as resin solutions.

In some preferred embodiments, the amount of the at least one water-dilutable acrylic resin is from 20 to 30% by weight, based on the weight of component a. The amount of the at least one water-dilutable acrylic resin is about 10-30 wt.%, preferably about 12-28 wt.%, for example about 25 wt.%, based on the weight of component a. In some preferred embodiments, the at least one water-dilutable acrylic resin is present in an amount of about 20 to 30 wt.%, based on the weight of component a.

Here, it is to be noted that the water-dilutable acrylic resin herein is substantially different from the ordinary aqueous acrylic resin emulsion in the art. The water-dilutable acrylic resin is prepared by hydrophilic modification of alcohol-soluble acrylic resin, and can be dissolved in water to form a uniform phase state. The water-dilutable acrylic resin not only maintains some of the excellent properties of solvent-borne resins (including, for example, good resistance, good transparency, excellent compatibility with many solvents and pigments, etc.), but also has significantly improved water solubility. The resin in the common aqueous acrylic resin emulsion is generally obtained by polymerizing aqueous monomers, has large dispersed particle size in water, is in an emulsion state, cannot be in a uniform phase state, and has limited permeability and transparency.

Further, the water-dilutable acrylic resin herein has at least one self-crosslinking functional group in addition to the hydrophilic group. The water-dilutable acrylic resins herein are capable of self-crosslinking, providing good crosslink density, good water resistance and desired film formation speed, even providing a blocking effect.

Without wishing to be bound by theory, this unique combination of properties makes it possible not only to prepare stable aqueous systems with better environmental and application properties, but also allows compositions comprising water-dilutable acrylic resins to function as sealer primers while being used for coloring.

Optionally, component a may also comprise an acrylic emulsion. In some embodiments, the amount of acrylic emulsion is 0 to 15 wt%, such as 5 wt%, 8 wt%, 10 wt%, 12 wt%, based on the weight of component a.

Preferably, component a contains no or almost no acrylic emulsion, for example no more than 5 wt%, no more than 3 wt%, no more than 1 wt%, or even no more than 0.2 wt% of the weight of component a. It has been found that the component A containing no or little acrylic emulsion can further improve the properties of wiping property, conduit-entering property, interlayer adhesion, water resistance and the like, as compared with the component A containing acrylic emulsion.

The compositions or component a described herein may also contain suitable slow-drying agents, according to the actual need. In some embodiments, the amount of slow drying agent is 1 to 45 weight percent, such as 10 to 40 weight percent, 20 to 35 weight percent, based on the weight of component a.

The compositions or components a described herein may also contain additional additives such as, but not limited to, fillers, anti-skinning agents, siccatives, emulsifiers, anti-migration aids, antimicrobials, chain extenders, lubricants, wetting agents, biocides, plasticizers, film forming aids, defoamers, colorants, waxes, antioxidants, anticorrosion agents, antifreeze agents, rheology aids, thickeners, dispersants, pH adjusters, adhesion promoters, UV stabilizers, leveling agents, or combinations thereof, as desired. The individual optional ingredients are present in amounts sufficient for their intended purpose, but preferably such amounts do not adversely affect the coating composition or the cured coating resulting therefrom.

In some embodiments, the component a comprises a film forming aid, a slow drying agent, a defoamer, a thickener, a wetting agent, or a combination thereof.

The amount of additional additives in component A can be readily determined by one skilled in the art according to the actual need. For example, component a comprises from about 0 to about 30 wt%, such as from about 0.1 to about 20 wt%, of additional additives relative to the total weight of component a. In some embodiments, the amount of each additive in component a may each independently be 0.1 wt% to 10.0 wt%, e.g., 0.2 wt%, 0.3 wt%, 0.4 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, 1 wt%, 1.1 wt%, 1.2 wt%, 1.3 wt%, 1.4 wt%, 1.5 wt%, 1.8 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, 5.0 wt%, 6.0 wt%, 8.0 wt%, or 9.0 wt%, relative to the total weight of the coating composition. For example, component A may contain 1 to 5 weight percent of a coalescent based on the weight of component A.

The amount of water in component a can be readily determined by one skilled in the art according to the actual need. For example, component a comprises 20 wt% to 60 wt%, such as 25 wt%, 30 wt%, 35 wt%, 40 wt%, 45 wt%, 50 wt%, relative to the total weight of component a.

Optionally, the A component can further comprise at least one cosolvent. The amount of optional co-solvent, if present, is lower. For example, the a-side can include 15 wt% or less co-solvent based on the total weight of the a-side. In some embodiments, the amount of co-solvent may range from about 5 to 15 wt%, preferably from about 6 to 12 wt%, more preferably from about 8 to 10 wt%, based on the total weight of the a component. For example, the amount of co-solvent may be even more preferably about 6, 7, 8, 9, 10, 11, or 12 weight percent based on the total weight of the a component.

The co-solvent may be an organic solvent commonly used in the art. For example, the co-solvent may be a monohydric or polyhydric alcohol, such as propanol, butanol, hexanol; glycol ethers or esters, such as diethylene glycol dialkyl ethers, dipropylene glycol dialkyl ethers, ethoxypropanol, butyl glycol, each having a C1-C6 alkyl group; glycols, such as ethylene glycol, propylene glycol; and ketones such as methyl ethyl ketone, acetone, cyclohexanone; n-methylpyrrolidone, N-ethylpyrrolidone; aromatic or aliphatic hydrocarbons, such as toluene, xylene or linear or branched aliphatic C6-C12 hydrocarbons. Preferably, the co-solvent is water-miscible. Examples of co-solvents include, but are not limited to, ethanol, isopropanol, butanol, butoxydiglycol, butyl glycol, dipropylene glycol methyl ether (DPM), propylene glycol methyl ether, ethylene glycol butyl ether, dipropylene glycol butyl ether (DPnB), ethylene glycol ethyl ether, ethylene glycol monomethyl ether, ethylene glycol monohexyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol monomethyl ether, ethylene glycol mono-n-butyl ether, tripropylene glycol monomethyl ether, ethylene glycol mono-isobutyl ether, diethylene glycol mono-isobutyl ether, propylene glycol mono-isobutyl ether, ethylene glycol monophenyl ether, propylene glycol monophenyl ether, ethylene glycol monomethyl ether acetate, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, toluene, xylene, trimethylbenzene, 100# solvent naphtha, 150# solvent naphtha, 180# solvent naphtha, 200# solvent naphtha, 2-methyl propanol acetate, and n-butyl acetate, and any combination thereof.

In some embodiments, component a is in the form of a solution, more preferably a substantially transparent solution. The transparency of the liquid (component a or water-dilutable acrylic resin) can be determined by methods known in the art. For example, the transparency of a liquid can be determined according to the Chinese national standard GB/T1721-2008. By "substantially transparent" is meant having a value of at least 80, such as 82 to 100, at least 85, or at least 87, as measured using the method according to chinese national standard GB/T1721-2008.

In some embodiments, component B comprises at least one colorant powder, at least one colorant slurry, or a combination thereof. The colorant may be used in powder, slurry, or other suitable form. To accommodate different needs of the product, various colors of pigments, colorants, toners, dyes and metal effect agents may be used. Herein, unless otherwise specified, pigments, colorants, toners, dyes, and metal effect agents will be collectively referred to as "colorants".

The pigments used in the colorant compositions of the present invention are known in the art. Suitable pigments include titanium white, carbon black, lampblack, black iron oxide, red iron oxide, transparent red iron oxide, yellow iron oxide, transparent yellow iron oxide, brown iron oxide (a blend of red and yellow oxides with black), phthalocyanine green, phthalocyanine blue, organic reds (e.g., naphthol red, quinacridone red and toluidine (toulidine) red), quinacridone magenta, quinacridone violet, DNA orange, organic yellows (e.g., monoazo yellow), or combinations thereof.

The skilled person can easily select the appropriate amount of colorant or component B according to the actual need. In some embodiments, the weight of component B is 0 to 10%, preferably 3 to 8%, for example 4%, 5%, 6% or 7%, based on the total weight of component a and component B.

In some embodiments, the compositions described herein may comprise 0.1 to 30 weight percent of a colorant, based on the total weight of the composition. In other embodiments, the compositions described herein may comprise from 1 to 6 weight percent of a colorant, based on the total weight of the composition.

A second aspect of the present application provides a coated article comprising a substrate and a composition described herein or a cured coating formed therefrom at least partially coated on the substrate. In some embodiments, the compositions described herein, or cured coatings formed therefrom, can coat at least 50%, such as at least 80%, at least 90%, at least 95%, and even up to 99% or 100% of the surface of the substrate. The substrate is a porous substrate such as paper, cardboard, wood veneer, particle board, fiber board, composite board, solid wood, and other wood substrates. In some embodiments, the substrate may be oak (e.g., white oak and red oak), pine (e.g., white pine and southern yellow pine), poplar, spruce, cherry, walnut, mahogany, cedar, maple, mahogany, birch, hickory, walnut, ash, rosewood, or derivatives thereof (e.g., veneer). Various porous substrates can be colored with the compositions of the present invention. Such wood is commonly used in the preparation of, for example, kitchen cabinets, bathroom cabinets, tables, desks, dressers and other furniture.

The compositions of the present application may be applied by conventional methods known to those of ordinary skill in the art. Preferably, the composition is applied by brushing, spraying, and other application methods known in the art. In this manner, a coating may be formed from the composition of the present application and such coatings are also within the scope of the present application. Thus, the present application also provides coatings obtainable from the compositions described herein.

The individual features described herein and the respective preferred modes can be combined, unless otherwise indicated.

Examples

The present disclosure is described in more detail by the following examples. These embodiments are for illustrative purposes only. The embodiments of the present application are not limited to these specific examples. All parts, percentages and ratios reported in the following examples are based on weight unless otherwise indicated. Moreover, all reagents used in the examples are commercially available and can be used directly without further treatment. For example, the water-dilutable acrylic resin may be HouXian ^TM 1101 is commercially available.

Test method

Liquid transparency: the determination is carried out according to the Chinese national standard GB/T1721-2008.

Wiping property: parallel comparison tests were performed under the same environmental conditions (room temperature and 60% humidity) and wiping manner, and the wiping smoothness was 5 points, the wiping hand-stagnation was 1 point, and the results were sequentially classified into 5 grades.

Catheter entry performance: the construction is carried out under the same conditions (room temperature and 60% humidity), the drying is carried out, and the effect of introducing the board surface wiping agent into the conduit is observed, wherein the 1 minute is the worst, and the 5 minute is the best.

Drying speed: the sample to be tested was coated in a thickness of 80. Mu. Dry and dried at a temperature of 25 ℃ (room temperature) and a humidity of 60% for a given time, and then the degree of solid dryness of the coating was determined. The test results were recorded on a scale of 1-5, with 1 being the worst (not completely dry) and 5 being the best (completely dry), which were ranked in 5 order.

Water resistance: the determination is carried out according to the GB/T3324-2017 standard. The grade 1 is worst, the grade 5 is best, and the grades are sequentially divided into 5 grades.

Alcohol resistance: the determination is carried out according to the GB/T3324-2017 standard. Score 1 is worst and score 5 is best.

Filling property: the wood grain filling is full, the contrast is preferably 5 minutes, the filling is not full or uniform, and the contrast difference of the wood grain is 0 minute.

Expansion rib resistance: and (3) constructing and drying under the same condition, observing the bulging degree of the conduit in the process of drying the color wiping agent on the surface of the solid wood material board, and sequentially classifying the solid wood material board into 5 grades by taking the non-bulging as the best, 1 grade as the worst and 5 grade as the best.

Color effect: the sample surface was visually observed for color brilliance, uniformity and texture clarity. The color is bright and uniform, the texture is clear, 1 is worst, 5 is best, and 5 grades are sequentially adopted.

Interlayer adhesion: the determination is carried out according to the GB/T3324-2017 standard. And (3) marking 10 groups of crossed grids with the interval of about 2mm by using a nicking tool, sticking the crossed grids on the surface of the nick by using a transparent adhesive tape, compacting, and tearing off the crossed grids, wherein the grids are sequentially divided into 0-5 grades according to the falling-off condition of the color materials in the grids. Best on level 0, worst on level 5.

Example 1

A commercially available ammonia-neutralized water-dispersible acrylic resin having a self-crosslinking functional group, a solid content of about 41%, a clear and transparent appearance, and an average particle diameter of 0.03 μm was used. Using the materials and amounts shown in Table 1, samples 1 and 2 were prepared as component A by mixing the materials. The appearance of component a was in the form of a substantially clear solution (not in the form of an emulsion) and the clarity was measured to be 87.

TABLE 1 materials and parts by weight for formulation samples 1 and 2

Preparing a component B which is water-based glaze color paste.

The component a and the component B were mixed at a weight ratio of 100.

The construction was carried out according to the procedures and conditions shown in Table 2, wherein in the rubbing process, the colorant composition prepared in example 1 was used.

TABLE 2 construction Process and conditions

Workability and coating properties were tested and the results are shown in table 3.

Comparative example 1

Commercially available acrylic emulsion systems and waterborne alkyd systems were used as comparative sample 1 and comparative sample 2, respectively, as component a. Two comparative colorant compositions were obtained using the same component B and component amounts as in example 1, respectively. The construction was carried out using the construction process and conditions shown in Table 2, wherein in the rubbing process, two comparative colorant compositions prepared in comparative example 1 were used.

Also, workability and coating properties were measured, and the results are shown in Table 3.

TABLE 3

	Sample 1	Sample 2	Comparative sample 1	Comparative sample 2
					Wiping property	5	4	3	5
Catheter performance	5	4	3	5
					Drying speed	4	4+	5	1 (cannot be completely dried)
Interlayer adhesion	Level 0	Stage 2	Stage 2	Grade 3
					Water resistance	4+	4	4	1
Alcohol resistance	4	4	3	1

From the results of table 3, it can be seen that both of samples 1 and 2, which mainly use a water-dilutable acrylic resin, have better effects in various properties than those of comparative samples 1 and 2. In particular, with sample 1, excellent overall performance is obtained.

Example 2

To investigate the two-in-one use of the compositions described herein for the stain and sealer, the stain composition of example 1, comprising sample 1, was used and worked according to the process and conditions shown in table 4. An aqueous stain containing comparative sample 1 was used as a control.

The effect of the composition in the closed process of the shallow conduit substrate and the effect in the open process of the deep conduit substrate were studied respectively by using the ashtree veneer or cherry veneer as the substrate. The construction was carried out at Room Temperature (RT) of 25 ℃ and humidity of 60%.

TABLE 4

Workability and coating properties were tested and the results are shown in table 5.

TABLE 5

From the results, it can be seen that option three, using the composition described herein, exhibited better filling and anti-beading effects, both in the closed process for shallow conduit substrates and in the open process for deep conduit substrates, as compared to the aqueous wipe of comparative sample 1. Moreover, with the compositions described herein, the best color results are obtained, with more brilliant colors and more uniform color distribution. It can be seen that with the compositions described herein, a very good combination of properties is obtained.

Regimen three, using the compositions described herein, exhibited the same or similar effect in tendon resistance as regimen one. This is very surprising. Because a sealer is typically required to prevent the swelling of the wood substrate in a typical construction process, better resistance to swelling can still be achieved without application of a sealer by using the compositions described herein. It can be seen that the use of the compositions described herein provides excellent sealing properties, which can result in a substantial savings in time and cost by eliminating a seal primer in either a seal or open process, while also providing excellent color effect and adhesion.

The drawings of the specification of the present application are filed as photographs not containing abundant colors only for satisfying the requirements of the patent laws of various countries on the forms of patent applications. However, the applicant reserves the right to submit colored drawings in the future, especially if color effects need to be considered as one of the very important effects in the present application.

Although the present application has been described with reference to a number of embodiments and examples, it will be readily apparent to those skilled in the art that modifications may be made to the present application without departing from the principles disclosed in the foregoing specification. For example, various features or preferred aspects described herein may be combined without departing from the principles disclosed in the foregoing specification, and the resultant technical solution should be understood to belong to the contents described herein. Such variations are to be considered included in the following claims unless the claims expressly state otherwise. Accordingly, the embodiments described in detail herein are illustrative only and are not limiting to the scope of the application, which is to be given the full breadth of the appended claims and any and all equivalents thereof.

Claims

1. A stain composition for wood substrates comprising component A and component B, wherein component A comprises at least one water dilutable acrylic resin and water, and component B comprises at least one stain,

wherein the at least one water-dilutable acrylic resin has at least one hydrophilic group and at least one self-crosslinking functional group, and the particle size of the at least one water-dilutable acrylic resin in component A is from 0.01 μm to 0.05 μm, and the amount of the at least one water-dilutable acrylic resin is from 12 to 28% by weight, based on the weight of component A, the water-dilutable acrylic resin being synthesized by means of free-radical solution polymerization in at least one organic solvent, and the water-dilutable acrylic resin being in the form of a resin solution.

2. The composition of claim 1, wherein the water-dilutable acrylic resin is obtained by reacting at least one ethylenically unsaturated monomer with at least one self-crosslinking functional group, at least one ethylenically unsaturated monomer with a hydrophilic group, or a combination thereof.

3. The composition of claim 1, wherein the water-dilutable acrylic resin is obtained by reacting (a) at least one ethylenically unsaturated monomer having at least one self-crosslinking functional group, at least one ethylenically unsaturated monomer having a hydrophilic group, or a combination thereof, and (b) at least one crosslinking agent.

4. The composition of claim 3, wherein the at least one ethylenically unsaturated monomer having at least one self-crosslinking functional group comprises at least one ketocarbonyl-or epoxy-containing ethylenically unsaturated monomer, at least one hydrolyzable group-containing ethylenically unsaturated monomer, at least one aziridinyl-containing ethylenically unsaturated monomer, or a combination thereof.

5. The composition of claim 4, wherein the at least one ketocarbonyl-or epoxy-containing ethylenically unsaturated monomer comprises diacetone acrylamide, methyl vinyl ketone, acetoacetoxyethyl (meth) acrylate, glycidyl (meth) acrylate, (meth) allyl glycidyl ether, 1-allyloxy-3,4-butylene oxide, 1- (3-butenyloxy) -2,3-propylene oxide, 4-vinyl-1-cyclohexane-1,2-epoxide, or a combination thereof.

6. <xnotran> 4 , , , , , , , , , (2- ) , , ,3- ( ) ,3- ( ) ,3- ( ) ,3- ( ) , , , (2- ) , , , ( ) , , , , , ,3- , , , ( ) , , , , ,2- , </xnotran> 2-methacryloyloxyethyltrimethoxysilane, 2-acryloxyethyltriethoxysilane, 2-methacryloyloxyethyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-acryloxypropyltriethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-acryloxypropylmethyldimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-acryloxypropylmethyldichlorosilane, 3-methacryloxypropylmethyldichlorosilane, 3-acryloxypropyltris (2-methoxyethoxy) silane, 3-methacryloxypropyltris (2-methoxyethoxy) silane, or a combination thereof.

7. The composition of claim 4, wherein the at least one ethylenimine group-containing ethylenically unsaturated monomer comprises 2- (1-ethylenimine) ethyl (meth) acrylate, 2- (1-ethylenimine) propyl (meth) acrylate, 3- (1-ethylenimine) propyl (meth) acrylate, or a combination thereof.

8. The composition of claim 3, wherein the at least one ethylenically unsaturated monomer with hydrophilic groups comprises at least one hydroxyl containing ethylenically unsaturated monomer, at least one carboxyl containing ethylenically unsaturated monomer, at least one amido containing ethylenically unsaturated monomer, or a combination thereof.

9. The composition of claim 8, wherein the at least one hydroxyl containing ethylenically unsaturated monomer comprises a hydroxyalkyl ester of (meth) acrylic acid, a hydroxyalkyl ester of maleic acid, or a combination thereof.

10. The composition of claim 8, wherein the at least one hydroxyl containing ethylenically unsaturated monomer comprises hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, N-methylolacrylamide, 2-hydroxyethyl methyl maleate, di (2-hydroxypropyl) maleate, or a combination thereof.

11. The composition of claim 8, wherein the at least one ethylenically unsaturated monomer containing a carboxyl group comprises (meth) acrylic acid, crotonic acid, isocrotonic acid, ethacrylic acid, propylacrylic acid, isopropylacrylic acid, itaconic acid, maleic anhydride, fumaric acid, or a combination thereof.

12. The composition of claim 8, wherein the at least one amido-containing ethylenically unsaturated monomer comprises (meth) acrylamide, alpha-ethylmethyl (meth) acrylamide, N-methyl (meth) acrylamide, N-butoxymethyl (meth) acrylamide, diacetone (meth) acrylamide, or a combination thereof.

13. The composition according to any of the preceding claims, wherein the particle size of the water-dilutable acrylic resin in component a is from 0.01 to 0.03 μ ι η.

14. The composition of any one of claims 1-12, wherein the component a is in the form of a substantially clear solution.

15. The composition of any one of claims 1-12, wherein the at least one water-dilutable acrylic resin is in an amount of 20-28 wt.%, based on the weight of the component a.

16. The composition of any one of claims 1-12, wherein the component a further comprises a film forming aid, a slow drying agent, a defoamer, a thickener, a wetting agent, or a combination thereof.

17. The composition of any of claims 1-12, wherein the component B comprises at least one colorant powder, at least one colorant slurry, or a combination thereof.

18. A coated article comprising:

a wood substrate, and

the composition of any one of claims 1 to 17 or a cured coating formed therefrom at least partially coated on the wood substrate.

19. The coated article of claim 18, wherein the composition or the cured coating is in direct contact with the wood substrate.