CN111944397A - Solvent-free tin printing coil coating and preparation method thereof - Google Patents
Solvent-free tin printing coil coating and preparation method thereof Download PDFInfo
- Publication number
- CN111944397A CN111944397A CN201910400998.7A CN201910400998A CN111944397A CN 111944397 A CN111944397 A CN 111944397A CN 201910400998 A CN201910400998 A CN 201910400998A CN 111944397 A CN111944397 A CN 111944397A
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- CN
- China
- Prior art keywords
- solvent
- coil coating
- tin printing
- printing coil
- free tin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Abstract
The invention discloses a solvent-free tin printing coiled material coating which comprises the following components in parts by weight: the packaging coating produced by the formula and the process contains no VOC (volatile organic compounds) emission, is green and environment-friendly, and achieves strong adhesive force, high fullness, impact resistance, yellowing resistance, high gloss and good chemical resistance, and has excellent light and color retention and weather resistance.
Description
Technical Field
The invention relates to the field of solvent-free coatings, in particular to a solvent-free tin printing coil coating and a preparation method thereof.
Background
In order to enhance the weather resistance and corrosion resistance of the metal product and prolong the service life of the metal product. Surface treatment of metallic materials is often required. There are many kinds of metal surface treatment techniques such as painting, electroplating, chemical oxidation, coating techniques, etc. The most simple and effective method is to directly coat a proper coating on the metal surface, and after the coating is baked at a proper temperature and the solvent in the coating is evaporated, a compact protective film can be formed on the metal surface.
At present, metal coating products are mainly benzene and ester solvent type baking coatings, and can be classified into polyester baking type, epoxy baking type, alkyd baking type and acrylic baking type according to resin types. The solvent type baking metal coating is mature in application, and has the advantages of good adhesive force, good flexibility, no yellowing at high temperature and the like. However, these solvent-based coatings contain a large amount of organic solvents, and during the use process, the organic solvents volatilize into the atmosphere, which not only harms human health, but also causes serious environmental pollution. Therefore, the development of a new generation of VOC-free or micro-VOC, environmentally friendly, solvent-free coatings is a major development in the coating industry today. In actual industrial and daily use applications, metal coating products using acrylic resin as a main component are most widely used. However, the existing products of this type are still to be improved with respect to adhesion, impact resistance, gloss, solids content and viscosity.
Disclosure of Invention
The invention aims to provide a solvent-free tin printing coil coating and a preparation method thereof, which aim to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a solvent-free tin printing coil coating comprises the following components in parts by weight: 30-80wt% of 100% of solid acrylic modified saturated polyester resin, 0-50wt% of pigment, 0-50wt% of filler, 8-20wt% of amino resin and 1-3wt% of auxiliary agent.
As a further technical scheme of the invention, the auxiliary agent comprises the following components in parts by weight: 0.6 to 1.3 weight percent of flatting agent, 0.8 to 1 weight percent of dispersant, and 0.3 to 0.8 weight percent of defoaming agent.
As a further technical scheme of the invention, the pigment comprises the following components in parts by weight: 5wt% of phthalocyanine blue, 5wt% of permanent yellow, 8wt% of pigment red and 50wt% of titanium dioxide.
As a further technical scheme of the invention, the leveling agent can be one of an organic silicon leveling agent and an acrylate leveling agent.
As a further technical scheme of the invention, the dispersant can be one of a sodium polycarboxylate dispersant and a high-molecular block copolymer dispersant.
As a further technical scheme of the invention, the defoaming agent can be one of a non-organic silicon defoaming agent and an organic silicon defoaming agent.
As a further technical scheme of the invention, the filler can be one or a mixture of more than two of talcum powder, kaolin and barium sulfate.
As a further technical scheme of the invention, the amino resin is hexamethoxy methyl melamine resin.
As a further technical scheme of the invention, the 100 percent solid content acrylic acid modified saturated polyester resin is hydroxyl-containing thermosetting resin.
The invention provides a preparation method of a solvent-free tin printing coil coating, which comprises the following steps:
s1, adding the 100 percent solid acrylic acid-containing modified saturated polyester resin, the pigment filler and the dispersant into a high-speed dispersion machine according to the proportion, uniformly dispersing and stirring, wherein the stirring speed in the high-speed dispersion machine is controlled at 1000 r/min, and the stirring time is controlled at 20-30 min;
s2, putting the mixed substance obtained in the step S1 into a three-roll grinder for grinding, repeatedly grinding for three times, and standing after the grinding fineness is lower than 10 um;
s3, adding the amino resin and the auxiliary agent into the mixture obtained in the step S2 according to the proportion, uniformly stirring the mixture in a stirrer at the stirring speed of 600 revolutions for 20-30 min;
and S4, discharging the mixture obtained in the step S3 to obtain the solvent-free tin printing coil coating.
The invention has the beneficial effects that: the packaging coating produced by the formula and the process does not contain VOC emission, is green and environment-friendly, and has the advantages of strong adhesive force, high fullness, impact resistance, yellowing resistance, high gloss, good chemical resistance, excellent light and color retention and weather resistance.
Detailed Description
The following describes embodiments of the present invention with reference to preferred examples.
A solvent-free tin printing coil coating comprises the following components in parts by weight: 30-80wt% of 100% solid acrylic modified saturated polyester resin, 0-50wt% of pigment, 0-50wt% of filler, 8-20wt% of amino resin and 1-3wt% of auxiliary agent, wherein the auxiliary agent comprises the following components in parts by weight: 0.6 to 1.3 weight percent of flatting agent, 0.8 to 1 weight percent of dispersant, 0.3 to 0.8 weight percent of defoaming agent, and the pigment comprises the following components in parts by weight: the resin comprises the following components, by weight, 5% of phthalocyanine blue, 5% of permanent yellow, 8% of pigment red and 50% of titanium dioxide, wherein the leveling agent can be one of an organic silicon leveling agent and an acrylate leveling agent, the dispersing agent can be one of a polycarboxylate sodium salt dispersing agent and a high-molecular block copolymer dispersing agent, the defoaming agent can be one of a non-organic silicon defoaming agent and an organic silicon defoaming agent, the filler can be one or a mixture of more than two of talcum powder, kaolin and barium sulfate, the amino resin is hexamethoxymethylmelamine resin, and the 100% of acrylic acid modified saturated polyester resin is hydroxyl-containing thermosetting resin; the packaging coating produced by the formula does not contain VOC emission, is green and environment-friendly, and has the advantages of strong adhesive force, high fullness, impact resistance, yellowing resistance, high gloss, good chemical resistance, excellent light and color retention and weather resistance.
The invention relates to a preparation method of a solvent-free tin printing coil coating, which comprises the following steps:
s1, adding the 100 percent acrylic acid modified saturated polyester resin, the pigment filler and the dispersant into a high-speed dispersion machine according to the proportion, uniformly dispersing and stirring, wherein the stirring speed in the high-speed dispersion machine is controlled at 1000 r/min, and the stirring time is controlled at 20-30 min;
s2, putting the mixed substance obtained in the step S1 into a three-roll grinder for grinding, repeatedly grinding for three times, and standing after the grinding fineness is lower than 10 um;
s3, adding the amino resin and the auxiliary agent into the mixture obtained in the step S2 according to the proportion, uniformly stirring the mixture in a stirrer at the stirring speed of 600 revolutions for 20-30 min;
and S4, discharging the mixture obtained in the step S3 to obtain the solvent-free tin printing coil coating.
Example 1
Mixing 38wt% of 100% solid acrylic acid modified saturated polyester resin, 49wt% of rutile type titanium dioxide and 2wt% of dispersing auxiliary agent, weighing the raw materials, putting the raw materials into a high-speed dispersion machine for dispersion and stirring for 20-30min until the raw materials are uniform, then putting the mixture after dispersion and stirring into a three-roll grinder for grinding until the fineness is lower than 10 mu m, finally adding 9.6wt% of amino resin, 0.5wt% of catalyst, 1wt% of flatting agent and 0.05wt% of defoaming agent, and uniformly stirring to obtain the white magnetic coating for the solvent-free metal packaging.
The performance test results are as follows:
solid content: ≧ 99.9%;
product viscosity: 15000mpa.s/25 ℃;
construction viscosity: the viscosity of the coating is 120S after the coating is heated to 80 ℃;
baking temperature: 170 ℃;
baking time: 12 min;
gloss: 95;
adhesion force: a first stage;
hardness: 2H;
t bending: 0-1T;
impact properties (1 KG · 50 CM): the positive and reverse flushing paint films are not damaged;
solvent resistance: MEK is more than or equal to 100 times;
heat resistance: baking for 40min/200 deg.C without yellowing;
example 2
Weighing 80wt% of 100 wt% of solid acrylic acid modified saturated polyester resin, 19wt% of amino resin, 0.5wt% of catalyst, 1wt% of flatting agent and 0.05wt% of defoaming agent, uniformly stirring, and putting into a high-speed dispersion machine for dispersing and stirring for 20-30min until uniform to obtain the solvent-free gloss oil coating for metal packaging.
The performance test results are as follows:
solid content: not less than 99.9 percent
Product viscosity: 15000mpa.s/25 deg.C
Construction viscosity: the viscosity of the coating is 100S after the coating is heated to 60 DEG C
Baking temperature: 170 deg.C
Baking time: 12min
Gloss: 100
Adhesion force: first stage
Hardness: 2H
T bending: 0-1T
Impact properties (1 KG · 50 CM): the positive and negative impact paint film is not damaged
Solvent resistance: MEK is more than or equal to 100 times
Heat resistance: no yellowing after baking at 40min/200 DEG C
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The solvent-free tin printing coil coating is characterized by comprising the following components in parts by weight: 30-80wt% of 100% of solid acrylic modified saturated polyester resin, 0-50wt% of pigment, 0-50wt% of filler, 8-20wt% of amino resin and 1-3wt% of auxiliary agent.
2. The solvent-free tin printing coil coating as claimed in claim 1, wherein the auxiliary agent comprises the following components in parts by weight: 0.6 to 1.3 weight percent of flatting agent, 0.8 to 1 weight percent of dispersant, and 0.3 to 0.8 weight percent of defoaming agent.
3. The solvent-free tin printing coil coating as claimed in claim 1, wherein the pigment comprises the following components in parts by weight: 5wt% of phthalocyanine blue, 5wt% of permanent yellow, 8wt% of pigment red and 50wt% of titanium dioxide.
4. The solvent-free tin printing coil coating as claimed in claim 2, wherein the leveling agent is one of an organosilicon leveling agent and an acrylate leveling agent.
5. The solventless tin printing coil coating according to claim 2, wherein the dispersant is one of a polycarboxylate sodium salt dispersant and a high molecular block copolymer dispersant.
6. The solvent-free tin printing coil coating as claimed in claim 2, wherein the defoaming agent is one of a non-silicone defoaming agent and a silicone defoaming agent.
7. The solvent-free tin printing coil coating as claimed in claim 1, wherein the filler is one or a mixture of more than two of talc, kaolin and barium sulfate.
8. The solventless tin printing coil coating of claim 1 wherein the amino resin is hexamethoxymethylmelamine resin.
9. The solventless tin printing coil coating of claim 1 wherein the 100% solids acrylic modified saturated polyester resin is a hydroxyl-containing thermoset resin.
10. The preparation method of the solvent-free tin printing coil coating according to claim 1, wherein the preparation method comprises the following steps:
s1, adding the 100 percent acrylic acid modified saturated polyester resin, the pigment filler and the dispersant into a high-speed dispersion machine according to the proportion, uniformly dispersing and stirring, wherein the stirring speed in the high-speed dispersion machine is controlled at 1000 r/min, and the stirring time is controlled at 20-30 min;
s2, putting the mixed substance obtained in the step S1 into a three-roll grinder for grinding, repeatedly grinding for three times, and standing after the grinding fineness is lower than 10 um;
s3, adding the amino resin and the auxiliary agent into the mixture obtained in the step S2 according to the proportion, uniformly stirring the mixture in a stirrer at the stirring speed of 600 revolutions for 20-30 min;
and S4, discharging the mixture obtained in the step S3 to obtain the solvent-free tin printing coil coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400998.7A CN111944397A (en) | 2019-05-15 | 2019-05-15 | Solvent-free tin printing coil coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400998.7A CN111944397A (en) | 2019-05-15 | 2019-05-15 | Solvent-free tin printing coil coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111944397A true CN111944397A (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910400998.7A Pending CN111944397A (en) | 2019-05-15 | 2019-05-15 | Solvent-free tin printing coil coating and preparation method thereof |
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| CN (1) | CN111944397A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525275A (en) * | 2013-10-24 | 2014-01-22 | 成都展辰化工有限公司 | Baking white paint with high hardness, high solid content and low temperature |
| CN107502155A (en) * | 2017-09-20 | 2017-12-22 | 北京金汇利应用化工制品有限公司 | A kind of coating of steel band property of water-bearing acrylic acid modified saturated polyester resin |
-
2019
- 2019-05-15 CN CN201910400998.7A patent/CN111944397A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525275A (en) * | 2013-10-24 | 2014-01-22 | 成都展辰化工有限公司 | Baking white paint with high hardness, high solid content and low temperature |
| CN107502155A (en) * | 2017-09-20 | 2017-12-22 | 北京金汇利应用化工制品有限公司 | A kind of coating of steel band property of water-bearing acrylic acid modified saturated polyester resin |
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Application publication date: 20201117 |
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