CN109320647B - Dispersing agent for resin-free color paste - Google Patents
Dispersing agent for resin-free color paste Download PDFInfo
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- CN109320647B CN109320647B CN201811145478.8A CN201811145478A CN109320647B CN 109320647 B CN109320647 B CN 109320647B CN 201811145478 A CN201811145478 A CN 201811145478A CN 109320647 B CN109320647 B CN 109320647B
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- color paste
- resin
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- acrylate
- dispersant
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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
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- 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
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (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
-
- 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)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Polyurethanes Or Polyureas (AREA)
- Dental Preparations (AREA)
Abstract
The invention discloses a dispersant for resin-free color paste, which comprises the following components: 5-15% of isocyanate monomer; b, 10-26% of acrylic acid; c, 5-25% of methyl methacrylate; 5-15% of butyl acrylate; e, 0-15% of isooctyl acrylate; 0.2-3.5% of benzoyl peroxide; g 0.5-3.8% of alpha-methyl styrene linear dimer; h, 40-50% of ethylene glycol butyl ether; i N, 11-28% of N-dimethylethanolamine. The invention has good universal dispersibility for organic and inorganic pigments, carbon black and other coloring agents, and is used for preparing color paste with good fluidity, high stability and bright color.
Description
Technical Field
The invention relates to the field of high polymer materials, in particular to a water-based dispersant and a water-based color paste.
Background
The color paste on the market is mainly divided into two categories of resin color paste and resin-free color paste, wherein the resin-free color paste has stronger universality and is deeply favored by consumers. The dispersibility of the pigments in the color pastes is particularly important, and the pigment particles can be reflocculated due to the surface energy of the pigment particles, and can slowly settle and even form hard cakes particularly after long-term storage. Therefore, the research and development of the dispersing agent suitable for the resin-free color paste can ensure that the prepared color paste has high general dispersibility, good fluidity and high stability.
Disclosure of Invention
The invention aims to provide a dispersant for resin-free color paste, which has good universal dispersibility for colorants such as organic and inorganic pigments, carbon black and the like, and is used for preparing color paste with good fluidity, high stability and bright color.
A dispersing agent for resin-free color paste comprises the following components in percentage by weight:
a 5-15% of isocyanate monomer
b acrylic acid 10-26%
c methyl methacrylate 5-25%
d butyl acrylate 5-15%
e 0 to 15 percent of isooctyl acrylate
0.2 to 3.5 percent of benzoyl peroxide
g 0.5-3.8% of alpha-methylstyrene linear dimer
h ethylene glycol butyl ether 40-50%
i N, 11-28% of N-dimethylethanolamine.
Preferably, the following components are allocated:
a isocyanate monomer 5-10%
b acrylic acid 10-15%
c methyl methacrylate 6-10%
d butyl acrylate 8-12%
e 1-6% of isooctyl acrylate
0.8 to 2.5 percent of benzoyl peroxide
g alpha-methylstyrene linear dimer 1-2.5%
h ethylene glycol butyl ether 42-48%
i N, 12-18% of N-dimethylethanolamine.
Preferably, the isocyanate monomer is prepared by mixing and reacting isocyanate and hydroxyethyl (meth) acrylate or hydroxypropyl (meth) acrylate or hydroxybutyl (meth) acrylate according to a molar ratio of 1:1 at 80 ℃ for 3-5 h.
Preferably, the preparation method is as follows: uniformly mixing the components a to g, taking the component h as a base material, heating to 120 +/-2 ℃, dropwise adding the mixture of the components a to g into the base material within 2-3h for synthetic reaction, keeping the temperature at 120 +/-2 ℃ for 2h after dropwise adding, cooling to 70 ℃, adding the component i, uniformly stirring, and discharging.
Compared with the prior art, the invention has the following beneficial effects:
the color sizing agent prepared by the dispersant has good dispersibility and high stability, and the color filler particles do not flocculate and agglomerate after being stored in a 50 ℃ oven for a week; the prepared pigment color paste has bright color, and simultaneously, the viscosity of the system is reduced by more than 50 percent.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A dispersing agent for resin-free color paste comprises the following components in percentage by weight:
a isocyanate monomer 10%
b acrylic acid 12%
c methyl methacrylate 8%
d butyl acrylate 10%
e isooctyl acrylate 3%
f benzoyl peroxide 2%
g alpha-methylstyrene Linear dimer 1%
h ethylene glycol butyl ether 42%
i N, N-dimethylethanolamine 12%.
The isocyanate monomer is prepared by mixing and reacting isocyanate and hydroxyethyl (meth) acrylate according to a molar ratio of 1:1 at 80 ℃ for 4 hours.
Uniformly mixing the components a to g, taking the component h as a base material, heating to 120 ℃, dropwise adding the mixture of the components a to g into the base material within 2.5h for synthesis reaction, after the dropwise addition is finished, keeping the temperature at 120 ℃ for 2h, cooling to 70 ℃, then adding the component i, uniformly stirring, and discharging.
Example 2
A dispersing agent for resin-free color paste comprises the following components in percentage by weight:
a isocyanate monomer 9%
b acrylic acid 11%
c methyl methacrylate 8%
d butyl acrylate 9%
e isooctyl acrylate 3.5%
f benzoyl peroxide 1.5%
g alpha-methylstyrene Linear dimer 2%
h ethylene glycol butyl ether 43%
i N, N-dimethylethanolamine 13%.
The preparation of the isocyanate monomer and the preparation of the dispersant are the same as in example 1.
Example 3
A dispersing agent for resin-free color paste comprises the following components in percentage by weight:
a isocyanate monomer 10%
b acrylic acid 10%
c methyl methacrylate 7%
d butyl acrylate 10%
e 2% of isooctyl acrylate
2.5 percent of benzoyl peroxide
g alpha-methylstyrene Linear dimer 1.5%
h ethylene glycol butyl ether 42%
i N, N-dimethylethanolamine 15%.
The preparation of the isocyanate monomer and the preparation of the dispersant are the same as in example 1.
Comparative example 1
An aqueous dispersant comprises 118.5 parts by weight of aliphatic polyisocyanate, 74.8 parts by weight of polyoxypropylene glycol, 3.5 parts by weight of dimethylolpropionic acid, 4.5 parts by weight of chain extender, 6.1 parts by weight of benzimidazole-5, 6-dicarboxylic acid, 2.5 parts by weight of triethylamine and 320 parts by weight of water. The preparation method comprises the following steps: uniformly stirring and mixing the hydroxyl-containing waterborne polymer, the polyisocyanate and the internal emulsifier at 20-40 ℃; (2) heating to 80 ℃ to react to obtain a prepolymer; (3) and slowly adding the prepolymer into water containing an imidazole compound and a chain extender, and then adding triethylamine to neutralize to obtain the waterborne polyurethane.
Examples 1-3 and comparative example 1 were used to prepare white, red and phthalocyanine blue resin-free pastes, respectively, and tested.
The measuring method comprises the following steps:
spectral separation factor SFF
The spectral separation coefficient SSF is a measure for characterizing whether an inkjet ink is excellent or not in terms of coloring properties because it takes into account properties related to light absorption (e.g., the maximum absorption wavelength λ max, the shape of the absorption spectrum, and the absorbance value at λ max) as well as properties related to dispersion quality and stability.
The spectral separation coefficient SSF of the ink is calculated by using the recorded spectral data of the ink solution and comparing the maximum absorbance with the absorbance at a reference wavelength. The reference wavelength depends on the pigment used. The pigment is diluted with water to a mass concentration of 0.002 or 0.005%.
Absorbance was measured in transmission using a shimadzu uv-2101PC dual beam spectrophotometer.
Ink jet ink colorability is characterized by SSF and loss after heat treatment.
Meanwhile, the dispersion stability was evaluated by comparing heat treatments (baking temperature 50 ℃ C., one week).
Therefore, the stability and the dispersibility of the color paste are superior to those of the embodiment, which is mainly reflected in that amido bonds in polyurethane are adsorbed and anchored on the surfaces of solid particles, so that the surfaces of the coagulated solid particles are easy to wet; an adsorption layer is formed on the surface of the solid particles, so that the charge on the surface of the solid particles is increased, and the reaction force between the particles forming the steric hindrance is improved. A bilayer structure is formed on the surface of the solid particles, and the polar terminal carboxylate of the outer-layer dispersant has stronger affinity with water, so that the degree of wetting the solid particles by water is increased.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A dispersant for resin-free color paste is characterized in that: the composition comprises the following components in percentage by weight:
a isocyanate monomer 5-10%
b acrylic acid 10-15%
c methyl methacrylate 6-10%
d butyl acrylate 8-12%
e 1-6% of isooctyl acrylate
0.8 to 2.5 percent of benzoyl peroxide
g alpha-methylstyrene linear dimer 1-2.5%
h ethylene glycol butyl ether 42-48%
i N, 12-18% of N-dimethylethanolamine, wherein the sum of the using amounts of all the components is 100%;
the isocyanate monomer is prepared by mixing and reacting isocyanate and hydroxyethyl (methyl) acrylate or hydroxypropyl (methyl) acrylate or hydroxybutyl (methyl) acrylate according to the molar ratio of 1:1 at 80 ℃ for 3-5 h.
2. The dispersant for the resin-free color paste according to claim 1, wherein the dispersant comprises: the preparation method comprises the following steps: uniformly mixing the components a-g, taking the component h as a base material, heating to 120 +/-2 ℃, dropwise adding the mixture of the components a-g into the base material within 2-3h for synthetic reaction, keeping the temperature at 120 +/-2 ℃ for 2h after dropwise adding, cooling to 70 ℃, adding the component i, uniformly stirring, and discharging.
3. The preparation method of the dispersant for the resin-free color paste as claimed in claim 1, wherein the dispersant comprises the following components: uniformly mixing the components a-g, taking the component h as a base material, heating to 120 +/-2 ℃, dropwise adding the mixture of the components a-g into the base material within 2-3h for synthesis reaction, keeping the temperature at 120 +/-2 ℃ for 2h after dropwise adding, cooling to 70 ℃, adding the component i, uniformly stirring, and discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145478.8A CN109320647B (en) | 2018-09-29 | 2018-09-29 | Dispersing agent for resin-free color paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811145478.8A CN109320647B (en) | 2018-09-29 | 2018-09-29 | Dispersing agent for resin-free color paste |
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| Publication Number | Publication Date |
|---|---|
| CN109320647A CN109320647A (en) | 2019-02-12 |
| CN109320647B true CN109320647B (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811145478.8A Active CN109320647B (en) | 2018-09-29 | 2018-09-29 | Dispersing agent for resin-free color paste |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115785326B (en) * | 2022-12-07 | 2023-09-22 | 英德侗富贵科技材料有限公司 | Carbomer resin and preparation method thereof, and external medicine and cosmetic |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004045755A2 (en) * | 2002-11-20 | 2004-06-03 | Efka Additives B.V. | Aqueous emulsion polymer as dispersant |
| CN102433039A (en) * | 2011-09-05 | 2012-05-02 | 惠州市汉诺新材料有限公司 | Aqueous high-molecular dispersant, preparation method thereof, and purpose thereof |
| CN106433324A (en) * | 2016-07-20 | 2017-02-22 | 江苏足迹涂料有限公司 | Non-resin water base colorant and preparation thereof |
| CN107523143A (en) * | 2017-08-08 | 2017-12-29 | 江苏丽王科技股份有限公司 | A kind of general no fat mill base of water nano and preparation method thereof |
-
2018
- 2018-09-29 CN CN201811145478.8A patent/CN109320647B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004045755A2 (en) * | 2002-11-20 | 2004-06-03 | Efka Additives B.V. | Aqueous emulsion polymer as dispersant |
| CN102433039A (en) * | 2011-09-05 | 2012-05-02 | 惠州市汉诺新材料有限公司 | Aqueous high-molecular dispersant, preparation method thereof, and purpose thereof |
| CN106433324A (en) * | 2016-07-20 | 2017-02-22 | 江苏足迹涂料有限公司 | Non-resin water base colorant and preparation thereof |
| CN107523143A (en) * | 2017-08-08 | 2017-12-29 | 江苏丽王科技股份有限公司 | A kind of general no fat mill base of water nano and preparation method thereof |
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| CN109320647A (en) | 2019-02-12 |
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