CN105418832A - Aqueous pigment dispersing agent, preparation method thereof and color paste - Google Patents

Aqueous pigment dispersing agent, preparation method thereof and color paste Download PDF

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Publication number
CN105418832A
CN105418832A CN201510979988.5A CN201510979988A CN105418832A CN 105418832 A CN105418832 A CN 105418832A CN 201510979988 A CN201510979988 A CN 201510979988A CN 105418832 A CN105418832 A CN 105418832A
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pigment dispersant
monomer
waterborne pigment
preparation
acrylate
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杨斯盛
石碧
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SICHUAN DOWELL TECHNOLOGY CO LTD
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SICHUAN DOWELL TECHNOLOGY CO LTD
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Publication of CN105418832A publication Critical patent/CN105418832A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
    • 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
    • C09D17/00—Pigment pastes, e.g. for mixing in paints
    • C09D17/001—Pigment pastes, e.g. for mixing in paints in aqueous medium
    • 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
    • C09D17/00—Pigment pastes, e.g. for mixing in paints
    • C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
    • C09D17/005—Carbon black
    • 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
    • C09D17/00—Pigment pastes, e.g. for mixing in paints
    • C09D17/004—Pigment pastes, e.g. for mixing in paints containing an inorganic pigment
    • C09D17/007—Metal oxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

The invention provides a preparation method of an aqueous pigment dispersing agent. The preparation method includes the steps of: performing solution polymerization to unsaturated carboxylic acid being represented as the formula (I) and containing an alkenyl bond and a first monomer in the presence of an initiator and a chain transfer agent in a solvent, and regulating the pH value to prepare the aqueous pigment dispersing agent, wherein the first monomer is one or two of methacrylate and acrylate. The invention also provides an aqueous pigment dispersing agent which is prepared from the unsaturated carboxylic acid containing the alkenyl bond and the first monomer, wherein the first monomer is one or two selected from the methacrylate and the acrylate. The invention also provides color paste containing the aqueous pigment dispersing agent. The aqueous pigment dispersing agent being suitable for dispersion of an aqueous pigment system has a wide-spectral adaptation on both organic and inorganic pigments and is good in environment-friendly property.

Description

A kind of waterborne pigment dispersant, its preparation method and mill base
Technical field
The present invention relates to mill base technical field, particularly relate to a kind of waterborne pigment dispersant, its preparation method and mill base.
Background technology
Pigment is the main raw material of the products such as coating, ink, industrial coating and paint, widespread use in the said products.But pigment is generally sell with the aggregate of primary partical, and only has to reach after certain fineness through good dispersion and could show the performances such as good tinting strength, opacifying power and vividness, therefore the dispersion agent of pigment is absolutely necessary.Due to health environment-friendly factor, water-borne coatings and water-miscible paint etc. more and more come into one's own, be then further improved the requirement of dispersion agent, need dispersion agent to be a kind of waterborne pigment dispersant.
Polymer waterborne pigment dispersant is widely used in the production of aqueous color paste due to its more function group, the advantage such as sterically hindered, and for the dispersion agent of low molecular amphiphilic structure, pigment dispersion is more stable, and can obtain more fine grain size.Aqueous high molecular dispersion agent is a kind of amphiphilic structure equally, general oleophylic segment is made up of vinylbenzene, diisobutylene, acrylate or other unsaturated alkyl monomers, and hydrophilic segment is made up of the unsaturated monomer of vinylformic acid, methacrylic acid, maleic anhydride, (methyl) polyalkylene glycol acrylate class monomer, amino-contained or other heterocycles.
At present, report about macromolecule dispersing agent is a lot, such as: publication number is that the Chinese patent of CN101353500A discloses a kind of amphiphilic polymer pigment dispersant for water-borne coatings, publication number is that CN101827868A Chinese patent discloses a kind of block macromolecular dispersion agent, its preparation method and the pigment dispersed slurry containing this dispersion agent.For the dispersion generally easy realization of mineral dye, for carbon black and pigment dyestuff, vinylbenzene is that oleophylic segment is well selected, and current commercial dispersants majority is containing this structure, but vinylbenzene flash-point 31 DEG C, there is very strong volatility, have inflammable and explosive danger, all can produce serious harm to air, soil and water, and be suspect carcinogen, caused increasing concern, therefore, research does not have very important significance containing cinnamic novel dispersant.
Summary of the invention
The technical problem that the present invention solves is the waterborne pigment dispersant providing a kind of environment-friendly type good, and it has universality to pigment.
In view of this, this application provides a kind of preparation method of waterborne pigment dispersant, comprising:
Under the effect of initiator and chain-transfer agent, carry out solution polymerization containing the unsaturated carboxylic acid of ethylene linkage and the first monomer in a solvent by what there is formula I structure, after adjust ph, obtain waterborne pigment dispersant;
Described first monomer is one or both in methacrylic ester and acrylate;
Wherein, R 1, R 2with R 3carbonatoms summation be greater than 2, R 1, R 2with R 3independently be selected from the aryl of the replacement of the alkyl of H, C1 ~ C10, the alkyl of the replacement of C1 ~ C10, the aryl of C6 ~ C20 or C6 ~ C20.
Preferably, in the process of described solution polymerization, the monomer of reaction also comprises second comonomer; Described second comonomer be selected from vinylformic acid, methacrylic acid, maleic anhydride, Methacrylamide, acrylamide, methacrylic acid methoxypolyethylene glycol, polyalkylene glycol acrylate methyl ether, methacrylic acid ethyl glycol, polyalkylene glycol acrylate and vinyl pyridine one or more.
Preferably, described R 1, R 2and R 3independently be selected from methyl, tolyl, H or ethyl.
Preferably, the described unsaturated carboxylic acid containing ethylene linkage is β-cinnamic acid, α-cinnamic acid, 3,3-dimethacrylates, 2-ethyl-2-vinylformic acid.
Present invention also provides a kind of waterborne pigment dispersant, it is characterized in that, by having preparing containing the unsaturated carboxylic acid of ethylene linkage and the first monomer of formula I structure, described first monomer be selected from methacrylic ester and acrylate one or both;
Wherein, R 1, R 2with R 3carbonatoms summation be greater than 2, R 1, R 2with R 3independently be selected from the aryl of the replacement of the alkyl of H, C1 ~ C10, the alkyl of the replacement of C1 ~ C10, the aryl of C6 ~ C20 or C6 ~ C20.
Preferably, the synthon of described waterborne pigment dispersant also comprises second comonomer, described second comonomer be selected from vinylformic acid, methacrylic acid, maleic anhydride, Methacrylamide, acrylamide, methacrylic acid methoxypolyethylene glycol, polyalkylene glycol acrylate methyl ether, methacrylic acid ethyl glycol, polyalkylene glycol acrylate and vinyl pyridine one or more.
Preferably, the weight percent of the oleophylic segment of the first monomer synthesize described in described waterborne pigment dispersant is 30% ~ 60%, the weight percent of the amphipathic segment that the described unsaturated carboxylic acid containing ethylene linkage synthesizes is 20% ~ 70%, and the weight percent of the hydrophilic segment of described second comonomer synthesis is 0 ~ 40%.
Present invention also provides a kind of mill base, comprise the waterborne pigment dispersant described in prepared by the preparation method described in such scheme or such scheme.
Preferably, deionized water, pH adjusting agent and defoamer is also comprised in described mill base.
Preferably, in described mill base, the content of waterborne pigment dispersant is 30 ~ 60 weight parts.
This application provides a kind of preparation method of waterborne pigment dispersant, comprise the following steps: the unsaturated carboxylic acid containing ethylene linkage and the first monomer are carried out solution polymerization under the effect of initiator, obtains waterborne pigment dispersant; Described first monomer is one or both in methacrylic ester and acrylate.In the process preparing waterborne pigment dispersant, have formula I structure containing the waterborne pigment dispersant obtained after the unsaturated carboxylic acid of ethylene linkage and the first monomer polymerization not containing vinylbenzene, and do not contain other to the disagreeableness component of environment, therefore the waterborne pigment dispersant of the application has the good feature of environmental protection, contain parents' segment in waterborne pigment dispersant simultaneously, and make it be applicable to the dispersion of conventional organic and inorganic pigment water-based system, there is universality.
Embodiment
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The embodiment of the invention discloses a kind of preparation method of waterborne pigment dispersant, comprising:
The unsaturated carboxylic acid containing ethylene linkage and the first monomer with formula I structure are carried out solution polymerization in a solvent under the effect of initiator, by chain-transfer agent Molecular regulator amount, after adjust ph, obtains waterborne pigment dispersant;
Described first monomer is one or both in methacrylic ester and acrylate;
Wherein, R 1, R 2with R 3carbonatoms summation be greater than 2, R 1, R 2with R 3independently be selected from the aryl of the replacement of the alkyl of H, C1 ~ C10, the alkyl of the replacement of C1 ~ C10, the aryl of C6 ~ C20 or C6 ~ C20.
The hydrophilic and oleophilic segment of the application using the unsaturated carboxylic acid containing ethylene linkage as synthesis waterborne pigment dispersant, oleophylic segment using (methyl) acrylate monomer as synthesis waterborne pigment dispersant, above monomer adopts solution polymerization mode to synthesize the waterborne pigment dispersant with amphiphilic structure, its existing feature of environmental protection and universality is good.
In the process preparing waterborne pigment dispersant, in described solution polymerization process, the monomer of reaction also comprises second comonomer, described second comonomer be selected from (methyl) vinylformic acid, maleic anhydride, (methyl) acrylamide, (methyl) polyalkylene glycol acrylate methyl ether, (methyl) acrylic ethylene glycol and vinyl pyridine one or more.In an embodiment, described second comonomer is preferably one or more in acrylamide, methacrylic acid polyethylene glycol, methacrylic acid group ethylene glycol monomethyl ether and vinylformic acid.The hydrophilic segment of above-mentioned monomer synthesize waterborne pigment dispersant or secondary hydrophilic segment.Above-mentioned monomer is in the process of synthesis waterborne pigment dispersant, and the content that (methyl) acrylic acid content is 0 ~ 30 weight part, the content of maleic anhydride is 0 ~ 30 weight part, the content of (methyl) acrylamide is 0 ~ 10 weight part, the content of (methyl) polyalkylene glycol acrylate methyl ether is 0 ~ 50 weight part, the content of (methyl) acrylic ethylene glycol is 0 ~ 50 weight part and vinyl pyridine is 0 ~ 30 weight part.In an embodiment, described acrylic acid content is preferably 5 ~ 20 weight parts, the content of described methacrylic acid polyethylene glycol is preferably 5 ~ 15 weight parts, and the content of described methacrylic acid methoxypolyethylene glycol is preferably 5 ~ 15 weight parts, and the content of described acrylamide is preferably 5 ~ 10 weight parts.
In the process preparing waterborne pigment dispersant, above-mentioned reaction monomers is dissolved in solvent carries out solution polymerization under the effect of initiator, described solvent is preferably Virahol, and described initiator is preferably Diisopropyl azodicarboxylate, and described chain-transfer agent is preferably n-dodecyl mereaptan.
The structural formula of the unsaturated carboxylic acid containing ethylene linkage described in the application is as shown in formula I:
Wherein, R 1with R 2carbonatoms summation be greater than 2, R 1with R 2independently be selected from the aryl of the replacement of the alkyl of H, C1 ~ C10, the alkyl of the replacement of C1 ~ C10, the aryl of C6 ~ C20 or C6 ~ C20.
Preferably, described R 1, R 2and R 3independently be selected from methyl, tolyl, H or ethyl.The described unsaturated carboxylic acid containing ethylene linkage is more preferably β-cinnamic acid, α-cinnamic acid, 3,3-dimethacrylates, 2-ethyl-2-vinylformic acid.In the process preparing waterborne pigment dispersant, the content of the described unsaturated carboxylic acid containing ethylene linkage is 10 ~ 40 weight parts, and in an embodiment, the content of the described unsaturated carboxylic acid containing ethylene linkage is preferably 20 ~ 30 weight parts.The described unsaturated carboxylic acid containing ethylene linkage is as parents' segment of reaction monomers synthesis waterborne pigment dispersant.
The first monomer that the application synthesizes described waterborne pigment dispersant is one or both in methacrylic ester and acrylate, and it is as the oleophylic segment of synthesis aqueous polyurethane.In the process of synthesis waterborne pigment dispersant, in an embodiment, the content of described (methyl) acrylate is preferably 30 ~ 60 weight parts, and in an embodiment, the content of described (methyl) acrylate is more preferably 45 ~ 50 weight parts.Described (methyl) acrylate is preferably butyl acrylate or methyl acrylate.
In order to sufficient reacting, described in the application, the process of waterborne pigment dispersant is specially:
By have formula I structure containing ethylene linkage unsaturated carboxylic acid, mix with initiator containing the first monomer, second comonomer, chain-transfer agent, solvent, obtain mixed solution;
Get part mixed solution and be warming up to 70 ~ 75 DEG C, be naturally warming up to 80 ~ 85 DEG C, after temperature drops back, add residual mixed liquor, insulation 1 ~ 2h, then add initiator and solvent, insulation 1 ~ 2h, add 90 ~ 95 DEG C of water again, finally regulate pH to 8 ~ 8.5 of reaction solution, obtain waterborne pigment dispersant.
Present invention also provides a kind of waterborne pigment dispersant, it is by having preparing containing the unsaturated carboxylic acid of ethylene linkage and the first monomer of formula I structure, described first monomer be selected from methacrylic ester and acrylate one or both.According to the present invention, synthesize in the raw material of described waterborne pigment dispersant and also comprise second comonomer, described second comonomer be selected from vinylformic acid, methacrylic acid, maleic anhydride, Methacrylamide, acrylamide, methacrylic acid methoxypolyethylene glycol, polyalkylene glycol acrylate methyl ether, methacrylic acid ethyl glycol, polyalkylene glycol acrylate and vinyl pyridine one or more.
Described in the application, the weight percent of the hydrophilic segment of the synthesis of second comonomer described in waterborne pigment dispersant is preferably 0 ~ 40wt%, the weight percent of the oleophylic segment of described first monomer synthesize is preferably 30wt% ~ 60wt%, and the weight percent of parents' segment that the described unsaturated carboxylic acid containing ethylene linkage synthesizes is preferably 20wt% ~ 70wt%.
Present invention also offers a kind of mill base, it comprises the waterborne pigment dispersant described in prepared by the preparation method described in such scheme or such scheme.
Well known to those skilled in the art, in order to improve the suitability of mill base, also can comprise auxiliary agent in described mill base, described auxiliary agent is not limited to deionized water, pH adjusting agent and defoamer.In described mill base, the content of waterborne pigment dispersant is preferably 30 ~ 60 weight parts, and in an embodiment, the content of described waterborne pigment dispersant is preferably 40 ~ 50 weight parts.
This application provides a kind of waterborne pigment dispersant, it is applicable to the macromolecule dispersing agent of water-based system colo(u)rant dispersion, to organic and inorganic pigment, there is universality, with the water-base resin such as ACRYLIC EMULSION, polyurethane dispersions, there is good consistency, and the feature of environmental protection is good.
In order to understand the present invention further, below in conjunction with embodiment to waterborne pigment dispersant provided by the invention, its preparation method and its application, protection scope of the present invention is not limited by the following examples.
Raw material in following examples is commercially available prod.
Embodiment 1
By the β-cinnamic acid of 30 weight parts, the acrylamide of 5 weight parts, the methacrylic acid polyethylene glycol of 10 weight parts, the vinylformic acid of 10 weight parts, the butyl acrylate of 45 weight parts, the Virahol of 50 weight parts, the Diisopropyl azodicarboxylate of 2 weight parts and the n-dodecyl mereaptan mixed dissolution of 1 weight part, obtain mixed solution, get wherein 30 parts of mixed solution bottoming, under reflux conditions be warming up to 70 DEG C, naturally 80 ~ 85 DEG C are warming up to, after temperature drops back to 80 DEG C, drip residual monomer, be incubated 1 hour, drip 0.1 part of Diisopropyl azodicarboxylate (dissolving with 10 parts of Virahols), be incubated 1 hour, Distillation recovery Virahol, add 90 ~ 95 DEG C of 250 parts of water dissolution, and regulate pH to 8 ~ 8.5 with ammoniacal liquor 25 parts (25%), obtain the agent of clear viscous Solution Dispersion, number-average molecular weight Mn=5000 ~ 10000.
Embodiment 2
By the β-cinnamic acid of 20 weight parts, the n-dodecyl mereaptan mixed dissolution of the methyl acrylate of the methacrylic acid methoxypolyethylene glycol of 10 weight parts, the vinylformic acid of 20 weight parts, 50 weight parts, the Virahol of 50 weight parts, the Diisopropyl azodicarboxylate of 2 weight parts and 1 weight part, obtains mixed solution; Get wherein 30 parts of mixed solution bottoming, be under reflux conditions warming up to 70 DEG C, be naturally warming up to 80 ~ 85 DEG C, after temperature drops back to 80 DEG C, drip residual monomer, be incubated 1 hour, drip 0.1 part of Diisopropyl azodicarboxylate (dissolving with 10 parts of Virahols), be incubated 1 hour, Distillation recovery Virahol, adds 90 ~ 95 DEG C of 250 parts of water dissolution, and regulates pH to 8 ~ 8.5 with ammoniacal liquor, obtain the agent of clear viscous Solution Dispersion, number-average molecular weight Mn=5000 ~ 10000.
Embodiment 3
By 3 of 35 weight parts, 3-dimethacrylate, the methacrylic acid methoxypolyethylene glycol of 10 weight parts, the methacrylic acid polyethylene glycol of 10 weight parts, the vinylformic acid of 10 weight parts, the butyl acrylate of 45 weight parts, the Virahol of 50 weight parts, the Diisopropyl azodicarboxylate of 2 weight parts and the n-dodecyl mereaptan mixed dissolution of 1 weight part, obtain mixed solution, get wherein 30 parts of mixed solution bottoming, under reflux conditions be warming up to 70 DEG C, naturally 80 ~ 85 DEG C are warming up to, after temperature drops back to 80 DEG C, drip residual monomer, be incubated 1 hour, drip 0.1 part of Diisopropyl azodicarboxylate (dissolving with 10 parts of Virahols), be incubated 1 hour, Distillation recovery Virahol, add 90 ~ 95 DEG C of 250 parts of water dissolution, and regulate pH to 8 ~ 8.5 with ammoniacal liquor 25 parts (25%), obtain the agent of clear viscous Solution Dispersion, number-average molecular weight Mn=5000 ~ 10000.
Embodiment 4
The waterborne pigment dispersant prepare the embodiment 1 of the deionized water of 100 weight parts, 50 weight parts and the trolamine of 4 weight parts mix, add the carbon black C311 of 62.5 weight parts again, the defoamer Foamex825 of 0.2 weight part, (800RPM) disperses 30 minutes at a high speed, horizontal mill grinds 30 minutes, obtains the black water mill base that VMD (volume average particle size) is 0.56 μm.
Embodiment 5
The waterborne pigment dispersant prepare the embodiment 2 of the deionized water of 100 weight parts, 40 weight parts and the trolamine of 1 weight part mix, add the red iron oxide 180 of 120 weight parts again, the defoamer Foamex825 of 0.2 weight part, (800RPM) disperses 30 minutes at a high speed, horizontal mill grinds 30 minutes, obtains the water-base iron red color paste that VMD (volume average particle size) is 0.8 μm.
Embodiment 6
The waterborne pigment dispersant prepare the embodiment 2 of the deionized water of 100 weight parts, 40 weight parts and the trolamine of 1 weight part mix, add the red pigment P.R122 of 60 weight parts again, the defoamer Foamex825 of 0.2 weight part, (800RPM) disperses 30 minutes at a high speed, horizontal mill grinds 30 minutes, obtains the red aqueous color paste that VMD (volume average particle size) is 0.6 μm.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (10)

1. a preparation method for waterborne pigment dispersant, comprising:
Under the effect of initiator and chain-transfer agent, carry out solution polymerization containing the unsaturated carboxylic acid of ethylene linkage and the first monomer in a solvent by what there is formula I structure, after adjust ph, obtain waterborne pigment dispersant;
Described first monomer is one or both in methacrylic ester and acrylate;
Wherein, R 1, R 2with R 3carbonatoms summation be greater than 2, R 1, R 2with R 3independently be selected from the aryl of the replacement of the alkyl of H, C1 ~ C10, the alkyl of the replacement of C1 ~ C10, the aryl of C6 ~ C20 or C6 ~ C20.
2. preparation method according to claim 1, is characterized in that, in the process of described solution polymerization, the monomer of reaction also comprises second comonomer; Described second comonomer be selected from vinylformic acid, methacrylic acid, maleic anhydride, Methacrylamide, acrylamide, methacrylic acid methoxypolyethylene glycol, polyalkylene glycol acrylate methyl ether, methacrylic acid ethyl glycol, polyalkylene glycol acrylate and vinyl pyridine one or more.
3. preparation method according to claim 1 and 2, is characterized in that, described R 1, R 2and R 3independently be selected from methyl, tolyl, H or ethyl.
4. preparation method according to claim 1 and 2, is characterized in that, the described unsaturated carboxylic acid containing ethylene linkage is β-cinnamic acid, α-cinnamic acid, 3,3-dimethacrylates, 2-ethyl-2-vinylformic acid.
5. a waterborne pigment dispersant, is characterized in that, by having preparing containing the unsaturated carboxylic acid of ethylene linkage and the first monomer of formula I structure, described first monomer be selected from methacrylic ester and acrylate one or both;
Wherein, R 1, R 2with R 3carbonatoms summation be greater than 2, R 1, R 2with R 3independently be selected from the aryl of the replacement of the alkyl of H, C1 ~ C10, the alkyl of the replacement of C1 ~ C10, the aryl of C6 ~ C20 or C6 ~ C20.
6. waterborne pigment dispersant according to claim 5, it is characterized in that, the synthon of described waterborne pigment dispersant also comprises second comonomer, described second comonomer be selected from vinylformic acid, methacrylic acid, maleic anhydride, Methacrylamide, acrylamide, methacrylic acid methoxypolyethylene glycol, polyalkylene glycol acrylate methyl ether, methacrylic acid ethyl glycol, polyalkylene glycol acrylate and vinyl pyridine one or more.
7. waterborne pigment dispersant according to claim 6, it is characterized in that, the weight percent of the oleophylic segment of the first monomer synthesize described in described waterborne pigment dispersant is 30% ~ 60%, the weight percent of the amphipathic segment that the described unsaturated carboxylic acid containing ethylene linkage synthesizes is 20% ~ 70%, and the weight percent of the hydrophilic segment of described second comonomer synthesis is 0 ~ 40%.
8. a mill base, comprises prepared by the preparation method described in any one of Claims 1 to 4 or described in any one of claim 5 ~ 7 waterborne pigment dispersant.
9. mill base according to claim 8, is characterized in that, also comprises deionized water, pH adjusting agent and defoamer in described mill base.
10. mill base according to claim 8, is characterized in that, in described mill base, the content of waterborne pigment dispersant is 30 ~ 60 weight parts.
CN201510979988.5A 2015-12-23 2015-12-23 Aqueous pigment dispersing agent, preparation method thereof and color paste Pending CN105418832A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN107383291A (en) * 2017-08-02 2017-11-24 四川省蓝扬科技有限公司 It is a kind of to stablize environment-friendly water-based pigment and preparation method thereof
CN107892730A (en) * 2017-10-30 2018-04-10 珠海市金团化学品有限公司 A kind of water-based resin-free color paste macromolecule dispersing agent and preparation method thereof
CN109280427A (en) * 2017-07-21 2019-01-29 包头中科世纪科技有限责任公司 Water-base resin mill base and preparation method thereof
CN111718619A (en) * 2020-05-25 2020-09-29 浙江大利实业有限公司 Production process of water-based environment-friendly nubuck black paste
CN114605598A (en) * 2022-03-31 2022-06-10 长兴化学（天津）有限公司 Bio-based dispersant, preparation method and application thereof
CN115785329A (en) * 2022-11-29 2023-03-14 佛山市顺德区永创翔亿电子材料有限公司 Acrylate dispersant, preparation method thereof, acrylate adhesive and termination adhesive tape
CN115975435A (en) * 2022-12-27 2023-04-18 广东英科集团股份有限公司 High-concentration superfine color paste and preparation method thereof

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107151927A (en) * 2017-05-22 2017-09-12 苏州凯邦生物技术有限公司 A kind of pigment dyeing polyacrylic dispersant and preparation method thereof
CN109280427A (en) * 2017-07-21 2019-01-29 包头中科世纪科技有限责任公司 Water-base resin mill base and preparation method thereof
CN107383291A (en) * 2017-08-02 2017-11-24 四川省蓝扬科技有限公司 It is a kind of to stablize environment-friendly water-based pigment and preparation method thereof
CN107892730A (en) * 2017-10-30 2018-04-10 珠海市金团化学品有限公司 A kind of water-based resin-free color paste macromolecule dispersing agent and preparation method thereof
CN111718619A (en) * 2020-05-25 2020-09-29 浙江大利实业有限公司 Production process of water-based environment-friendly nubuck black paste
CN114605598A (en) * 2022-03-31 2022-06-10 长兴化学（天津）有限公司 Bio-based dispersant, preparation method and application thereof
CN114605598B (en) * 2022-03-31 2024-03-01 长兴化学（天津）有限公司 Bio-based dispersing agent and preparation method and application thereof
CN115785329A (en) * 2022-11-29 2023-03-14 佛山市顺德区永创翔亿电子材料有限公司 Acrylate dispersant, preparation method thereof, acrylate adhesive and termination adhesive tape
CN115785329B (en) * 2022-11-29 2023-08-25 佛山市顺德区永创翔亿电子材料有限公司 Acrylic ester dispersing agent, preparation method thereof, acrylic ester adhesive and termination adhesive tape
CN115975435A (en) * 2022-12-27 2023-04-18 广东英科集团股份有限公司 High-concentration superfine color paste and preparation method thereof
CN115975435B (en) * 2022-12-27 2024-02-02 广东英科集团股份有限公司 High-concentration superfine color paste and preparation method thereof

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Application publication date: 20160323