CN112126277A - VOC-free low-color-concentration water-based ink and preparation method thereof - Google Patents
VOC-free low-color-concentration water-based ink and preparation method thereof Download PDFInfo
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- CN112126277A CN112126277A CN202010996493.4A CN202010996493A CN112126277A CN 112126277 A CN112126277 A CN 112126277A CN 202010996493 A CN202010996493 A CN 202010996493A CN 112126277 A CN112126277 A CN 112126277A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
-
- 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
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
Abstract
The invention relates to the field of chemical industry, and discloses a VOC-free low-color-concentration water-based ink and a preparation method thereof, wherein the VOC-free low-color-concentration water-based ink is prepared from the following components in parts by weight: pigment: 5-10 parts of an aqueous binder: 30-50 parts of a solvent: 30-50 parts of a surfactant: 1-5 parts of a pH regulator: 1-3 parts of an auxiliary agent: 2-5 parts; wherein the aqueous vehicle is a copolymer of a methacrylate, a polymer polyol, and vinyl chloride. In the present application, the formation of a copolymer of methacrylate, polymer polyol and vinyl chloride into an aqueous vehicle can be effectively facilitated by using a copolymer of methacrylate, polymer polyol and vinyl chloride as the aqueous vehicle, with vinyl chloride as the internal crosslinker; the tension among the pigment, the solvent and the resin is adjusted by using the surfactant, so that the tensions of all components in the aqueous color ink are matched, and the aqueous color ink with excellent printing performance is obtained.
Description
Technical Field
The invention relates to the field of printing ink, in particular to VOC-free low-color-concentration water-based ink suitable for high-speed printing and a preparation method thereof.
Background
At present, gravure printing is generally performed by using organic solvent type ink, so that the surface of used tipping paper contains a plurality of organic volatile residual substances, such as benzene series substances, esters, ethers, ketones and other substances, which can contact human bodies to generate certain potential hazards. Meanwhile, the solvent-based ink inevitably causes a large amount of volatilization of the organic solvent in the printing process, so that a large amount of VOC is discharged to the environment and the surrounding atmosphere, certain environmental pollution is caused, and the release of volatile organic compounds can be greatly reduced by applying the water-based ink.
The pigment endows the ink with color characteristics, and meets the requirements of printing on colors. Both general organic pigments and inorganic pigments can be used for the aqueous ink. Since most of the resins of aqueous inks are alkali-soluble, pigments resistant to alkali must be used when they are selected. However, the distribution density of the pigment in the water-based ink is much larger than that of the solvent-based ink, and the surface tension and polarity of water are greatly different from those of the solvent, so that the pigment is difficult to disperse, the stability, viscosity and pH value of the ink are directly influenced, and the problems of color flocculation, color points and the like of the water-based ink frequently occur due to nonuniform color paste mixing in the intaglio printing process. For the aqueous color ink, when the color density is relatively low, whether the color paste is completely dispersed is the key for judging the quality of the aqueous color ink.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides a VOC-free low-color-concentration aqueous color ink suitable for high-speed printing and a preparation method thereof. The preparation process is simple, the performance is excellent, and the problems of color floc, color points and the like during high-speed printing can be effectively avoided.
The technical scheme is as follows: the invention provides a VOC-free low-color-concentration water-based ink which is characterized by being prepared from the following components in percentage by weight:
pigment: 5 to 10 parts of
An aqueous binder: 30 to 50 portions of
Solvent: 30 to 50 portions of
Surfactant (b): 1-5 parts of
pH regulator: 1-3 parts of
Auxiliary agent: 2-5 parts;
wherein the aqueous vehicle is a copolymer of a methacrylate, a polymer polyol, and vinyl chloride.
Preferably, the aqueous vehicle is made by the following method: adding 10-50 parts of methacrylate and 5-10 parts of polymer polyol into a neutralization reaction tank at the temperature of 70-90 ℃ according to mass fraction, and uniformly stirring to obtain a neutralization solution; adding chloroethylene into the neutralization solution, and uniformly stirring to obtain a resin feed liquid; and atomizing and drying the resin feed liquid to obtain a copolymer of methacrylate, polymer polyol and vinyl chloride, namely the aqueous connecting material.
Preferably, in the S1, 10-50 parts of methacrylate and 5-10 parts of polymer polyol are used; in said S2, vinyl chloride accounts for 2% of the total mass of all the components of said VOC-free low color density aqueous ink.
Preferably, the polymer polyol is a polycarbonate diol or a polyether diol.
Preferably, the auxiliary agent consists of the following components in parts by weight: 0.5-2 parts of wetting agent, 0.5-1.5 parts of defoaming agent, 0.5-2 parts of flatting agent, 0.5-2 parts of wax powder, 1-3 parts of dispersing agent and 0.5-1.5 parts of anti-scraping agent.
Preferably, the anti-scraping agent is wax emulsion, the defoaming agent is polyoxypropylene glycerol ether, the dispersing agent is oleamide, and the leveling agent is carboxymethyl cellulose.
Preferably, the solvent is a mixed solution of alcohol and deionized water in a volume ratio of 1-4: 1.
Preferably, the pH regulator is dilute ammonia water with the concentration of 5% g/ml.
The invention also provides a preparation method of the VOC-free low-color-concentration water-based ink, which comprises the following steps: s1: pigment dissolution: uniformly mixing the pigment and the solvent according to the ratio of 3:7, stirring at high speed for about 2 hours at normal temperature at the rotating speed of 1200-1500 rpm to obtain a dissolved color paste, and filtering by using a 200-mesh filter screen to obtain the color paste with lower fineness; s2: pre-dispersing ingredients: mixing the color paste with an aqueous connecting material, uniformly stirring at a high speed, adding a surfactant, a defoaming agent and a leveling agent, uniformly mixing, and grinding to the fineness of less than 10 mu m to obtain a semi-finished product of the color ink; s3: and (2) carrying out color ink reprocessing, namely dispersing the color ink semi-finished product, adding a dispersing agent, an anti-scraping agent, a wetting agent and wax powder, then adding the rest solvent, uniformly stirring, adding a pH regulator to adjust the pH value to 8-9, stirring, dispersing and filtering to obtain the VOC-free low-color-concentration aqueous color ink.
Has the advantages that: in the present application, the formation of a copolymer of methacrylate, polymer polyol and vinyl chloride into an aqueous vehicle can be effectively facilitated by using a copolymer of methacrylate, polymer polyol and vinyl chloride as the aqueous vehicle, wherein vinyl chloride is primarily used as an internal cross-linking agent; the tension among the pigment, the solvent and the resin is adjusted by using the surfactant, so that the tensions of all components in the aqueous color ink are matched, and the aqueous color ink with excellent printing performance is obtained.
Compared with the prior art, the product has excellent drying performance, can be completely dried at 120 ℃, and has higher drying speed. The VOC-free (limit of volatile organic compounds in YC 263 + 2008 cigarette sticks and box packing paper) aqueous color ink is more environment-friendly. The water-based ink has uniform color distribution, consistent color ink particle size, good combination of pigment and resin, better leveling property and accurate hue (GB T13217.1-2009 liquid ink color inspection method). The ink has wide application range, and has remarkable advantages in the aspects of glossiness (GB/T13217.2-2009 liquid ink glossiness test method), weather resistance, heat resistance (no obvious discoloration problem at the high temperature of 200 ℃), water resistance (no obvious discoloration when being soaked in normal temperature water bath for 24 h), chemical resistance, stain resistance (GB T26461-. The product has simple production process, easy operation and low production cost, and can be used for large-scale industrial production.
Detailed Description
The present invention will be described in detail with reference to specific examples.
Embodiment 1:
the embodiment provides a VOC-free low-color-concentration aqueous ink which is prepared from the following components in parts by weight:
pigment: 5 portions of
An aqueous binder: 45 portions of
A mixed solution of alcohol and deionized water in a volume ratio of 1: 40 portions of
Surfactant (b): 3 portions of
Diluted ammonia at 5% g/ml: 2 portions of
Auxiliary agent: 5 portions of
The aqueous binder is a copolymer of 30 parts of methacrylate, 7 parts of polycarbonate diol and vinyl chloride accounting for 2 percent of the total mass of all the components of the VOC-free low-color-concentration aqueous ink, and the preparation method comprises the following steps:
adding 30 parts of methacrylate and 7 parts of polycarbonate diol into a neutralization reaction tank at the temperature of 70-90 ℃, uniformly stirring to obtain a neutralized liquid, adding vinyl chloride accounting for 2% of the total mass of all components of the VOC-free low-color-concentration aqueous ink into the neutralized liquid to serve as an internal cross-linking agent, uniformly stirring to obtain a resin feed liquid, and atomizing and drying the feed liquid to obtain a copolymer of methacrylate, polymer polyol and vinyl chloride, namely the aqueous connecting material.
The auxiliary agent comprises the following components in parts by weight: 0.5 part of wetting agent, 1 part of defoaming agent, 1 part of flatting agent, 0.5 part of wax powder, 1 part of dispersing agent and 1 part of anti-scraping agent.
The preparation method of the aqueous color ink comprises the following steps:
dissolving the pigment A, uniformly mixing the pigment and a solvent (a mixed solution of alcohol and deionized water with a volume ratio of 1: 1) according to a ratio of 3:7, stirring at high speed for about 2 hours at normal temperature and at the rotating speed of 1200 rpm to obtain a dissolved color paste, and filtering by using a 200-mesh filter screen to obtain the color paste with lower fineness.
B, pre-dispersing ingredients: mixing the color paste and the water-based connecting material, uniformly stirring at a high speed, adding a surfactant, a defoaming agent and a leveling agent, uniformly mixing, and grinding to the fineness of less than 10 mu m to obtain the pigment; and preparing a color ink semi-finished product.
C, ink reprocessing, namely dispersing the ink semi-finished product, adding a dispersing agent, an anti-scraping agent, a wetting agent and wax powder, then adding the rest solvent, uniformly stirring, adding dilute ammonia water with the concentration of 5 percent g/ml to adjust the pH value to 8-9, stirring for dispersing, and filtering to obtain the VOC-free low-color-concentration aqueous ink.
Embodiment 2:
the embodiment provides a VOC-free low-color-concentration aqueous ink which is prepared from the following components in parts by weight:
pigment: 5 portions of
An aqueous binder: 45 portions of
A mixed solution of alcohol and deionized water in a volume ratio of 4: 1: 30 portions of
Surfactant (b): 3 portions of
Diluted ammonia at 5% g/ml: 1 part of
Auxiliary agent: 5 portions of
The aqueous binder is a copolymer of 50 parts of methacrylate, 10 parts of polymer polyol and vinyl chloride accounting for 2 percent of the total mass of all the components of the VOC-free low-color-concentration aqueous ink, and the preparation method comprises the following steps:
adding 30 parts of methacrylate and 7 parts of polyether glycol into a neutralization reaction tank at the temperature of 70-90 ℃, uniformly stirring to obtain a neutralized liquid, adding vinyl chloride accounting for 2% of the total mass of all the components of the VOC-free low-color-concentration aqueous ink into the neutralized liquid as an internal cross-linking agent, uniformly stirring to obtain a resin feed liquid, and atomizing and drying the feed liquid to obtain a copolymer of methacrylate, polymer polyol and vinyl chloride, namely the aqueous connecting material.
The auxiliary agent comprises the following components in parts by weight: 0.5 part of wetting agent, 1 part of defoaming agent, 1 part of flatting agent, 0.5 part of wax powder, 1 part of dispersing agent and 1 part of anti-scraping agent.
The preparation method of the aqueous color ink comprises the following steps:
dissolving the pigment A, uniformly mixing the pigment and a solvent (a mixed solution of alcohol and deionized water with a volume ratio of 4: 1) according to a ratio of 3:7, stirring at high speed for about 2 hours at normal temperature and at the rotating speed of 1200 rpm to obtain a dissolved color paste, and filtering by using a 200-mesh filter screen to obtain the color paste with lower fineness.
B, pre-dispersing ingredients: mixing the color paste and the water-based connecting material, uniformly stirring at a high speed, adding a surfactant, a defoaming agent and a leveling agent, uniformly mixing, and grinding to the fineness of less than 10 mu m to obtain the pigment; and preparing a color ink semi-finished product.
C, color ink reprocessing, dispersing the color ink semi-finished product, adding a dispersing agent, an anti-scraping agent, a wetting agent and wax powder, then adding the rest solvent, stirring uniformly, adding dilute ammonia water with the concentration of 5% g/ml to adjust the pH value to 8-9, stirring for dispersing, and filtering to obtain the VOC-free low-color-concentration aqueous color ink.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. The VOC-free low-color-concentration water-based ink is characterized by being prepared from the following components in parts by weight:
pigment: 5 to 10 parts of
An aqueous binder: 30 to 50 portions of
Solvent: 30 to 50 portions of
Surfactant (b): 1-5 parts of
pH regulator: 1-3 parts of
Auxiliary agent: 2-5 parts;
wherein the aqueous vehicle is a copolymer of a methacrylate, a polymer polyol, and vinyl chloride.
2. The VOC-free low color density aqueous color ink according to claim 1, wherein the aqueous vehicle is made by a process comprising:
s1: adding methacrylate and polymer polyol into a neutralization reaction tank at the temperature of 70-90 ℃, and uniformly stirring to obtain a neutralization solution;
s2: adding chloroethylene into the neutralization solution, and uniformly stirring to obtain a resin feed liquid;
s3: and atomizing and drying the resin feed liquid to obtain a copolymer of methacrylate, polymer polyol and vinyl chloride, namely the aqueous connecting material.
3. The VOC-free low color density aqueous color ink according to claim 2, wherein in S1, the methacrylate is 10 to 50 parts and the polymer polyol is 5 to 10 parts; in said S2, vinyl chloride accounts for 2% of the total mass of all the components of said VOC-free low color density aqueous ink.
4. The VOC-free low color density aqueous color ink according to claim 1, wherein the polymer polyol is a polycarbonate diol or a polyether diol.
5. The VOC-free low color density aqueous color ink according to claim 1, wherein the auxiliary agent consists of the following components in parts by weight: 0.5-2 parts of wetting agent, 0.5-1.5 parts of defoaming agent, 0.5-2 parts of flatting agent, 0.5-2 parts of wax powder, 1-3 parts of dispersing agent and 0.5-1.5 parts of anti-scraping agent.
6. The VOC-free low color density aqueous color ink according to claim 5, wherein the scratch resistant agent is a wax emulsion, the antifoaming agent is polyoxypropylene glycerol ether, the dispersant is oleamide, and/or the leveling agent is carboxymethyl cellulose.
7. The VOC-free low color concentration aqueous color ink according to any one of claims 1 to 6, wherein the solvent is a mixed solution of alcohol and deionized water in a volume ratio of 1-4: 1.
8. The VOC-free low color density aqueous color ink according to any of claims 1 to 6, wherein the pH adjuster is dilute ammonia water having a concentration of 5% g/ml.
9. A preparation method of VOC-free low-color-concentration water-based ink is characterized by comprising the following steps:
s1: pigment dissolution: uniformly mixing the pigment and the solvent according to the ratio of 3:7, stirring at high speed for about 2 hours at normal temperature at the rotating speed of 1200-1500 rpm to obtain a dissolved color paste, and filtering by using a 200-mesh filter screen to obtain the color paste with lower fineness;
s2: pre-dispersing ingredients: mixing the color paste with an aqueous connecting material, uniformly stirring at a high speed, adding a surfactant, a defoaming agent and a leveling agent, uniformly mixing, and grinding to the fineness of less than 10 mu m to obtain a semi-finished product of the color ink;
s3: and (2) carrying out color ink reprocessing, namely dispersing the color ink semi-finished product, adding a dispersing agent, an anti-scraping agent, a wetting agent and wax powder, then adding the rest solvent, uniformly stirring, adding a pH regulator to adjust the pH value to 8-9, stirring, dispersing and filtering to obtain the VOC-free low-color-concentration aqueous color ink.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010996493.4A CN112126277A (en) | 2020-09-21 | 2020-09-21 | VOC-free low-color-concentration water-based ink and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010996493.4A CN112126277A (en) | 2020-09-21 | 2020-09-21 | VOC-free low-color-concentration water-based ink and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065226A (en) * | 2016-05-31 | 2016-11-02 | 山东鲁信天印务有限公司 | A kind of novel environment friendly printing-ink and preparation method thereof, application |
| CN108192029A (en) * | 2018-01-04 | 2018-06-22 | 宜宾天原集团股份有限公司 | A kind of chloroethylene copolymer resin and preparation method thereof |
| CN109467633A (en) * | 2018-10-10 | 2019-03-15 | 中国石油化工股份有限公司 | A kind of preparation method of vinyl chloride-acrylate copolymer |
-
2020
- 2020-09-21 CN CN202010996493.4A patent/CN112126277A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065226A (en) * | 2016-05-31 | 2016-11-02 | 山东鲁信天印务有限公司 | A kind of novel environment friendly printing-ink and preparation method thereof, application |
| CN108192029A (en) * | 2018-01-04 | 2018-06-22 | 宜宾天原集团股份有限公司 | A kind of chloroethylene copolymer resin and preparation method thereof |
| CN109467633A (en) * | 2018-10-10 | 2019-03-15 | 中国石油化工股份有限公司 | A kind of preparation method of vinyl chloride-acrylate copolymer |
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Application publication date: 20201225 |
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