CN104109449A - Water-based food container inner wall paint and preparation method thereof - Google Patents
Water-based food container inner wall paint and preparation method thereof Download PDFInfo
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- CN104109449A CN104109449A CN201410362360.6A CN201410362360A CN104109449A CN 104109449 A CN104109449 A CN 104109449A CN 201410362360 A CN201410362360 A CN 201410362360A CN 104109449 A CN104109449 A CN 104109449A
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Abstract
The invention belongs to the field of coatings and in particular relates to a water-based food container inner wall paint and a preparation method thereof. The water-based food container inner wall paint is prepared from the following raw materials in percentage by weight: 30-45 percent of resin, 8-10 percent of crosslinking agent, 0.3-0.5 percent of amine neutralizer, 0.5-1 percent of nano modifier, 5-10 percent of filler, 22-30 percent of water, 20-25 percent of pigment, 0.2-0.3 percent of antifoaming agent, 0.06-0.1 percent of flatting agent and 0.5-0.8 percent of dispersing agent. The water-based food container inner wall paint is prepared by virtue of the following steps: carrying out a cross-linking reaction between a water-based polyester modified epoxy resin and a methylated amino resin at high temperature, neutralizing the water-based polyester modified epoxy resin by use of the amine neutralizer, and dissolving the generated salt in water, thereby obtaining the paint. The prepared film has the advantages of high hardness, high glossiness, high adhesive force, water resistance, moisture resistance, corrosion resistance, high-temperature resistance, flame-retardant property, salt water resistance, acid and alkali resistance, solvent resistance, gasoline resistance, aging resistance and high flexibility and is an environment-friendly product which can replace the traditional toxic and harmful solvent paint.
Description
Technical field
The invention belongs to paint field, be specifically related to a kind of aqueous food container inner wall paint and preparation method thereof.
Background technology
The base-material that food tin paint can Gong be selected has Synolac, vibrin, epoxy ester, phenolic aldehyde one epoxy resin, epoxy resin, vinyl resins, thermosetting acrylic resin etc., and wherein conventional have Synolac, epoxy resin, an acrylic resin.This area interior coating of synthetic resins used, mostly, taking epoxy resin as main interior coating, taking epoxy resin as basic coating has good chemical resistance, snappiness and sticking power, becomes the main products of coating industry at present.
But in the solvent based coating of this quasi-tradition, contain a large amount of volatile organic matters (VOC), HUMAN HEALTH is produced to harm, and along with the continuous enhancing of environmental consciousness, such solvent based coating is difficult to meet eco-friendly requirement.
Summary of the invention
The object of the invention is to contain a large amount of volatile organic matters (VOC) in order to solve tradition as the epoxy resin equal solvent type coating of food cans paint binder, can not meet the problem of the requirement of environment-friendly type.
For this reason, the invention provides a kind of aqueous food container inner wall paint, be prepared from by the starting material of following weight percent: resin 30～45%, linking agent 8～10%, amine neutralizing agent 0.3 ~ 0.5%, nano modifier 0.5 ~ 1%, filler 5 ~ 10%, water 22 ~ 30%, pigment 20 ~ 25%, defoamer 0.2 ~ 0.3%, flow agent 0.06 ~ 0.1%, dispersion agent 0.5 ~ 0.8%.
Described resin is waterborne polyester modified epoxy resin, linking agent is that content is 80% methyl-etherified aminoresin, amine neutralizing agent is dimethylethanolamine, nano modifier is the agent of KLH-I nanometer aging-resistant, filler is that fineness is 800 object process whites, defoamer is technical grade 810 defoamers, and flow agent is CF4430 flow agent, and dispersion agent is 27000 type dispersion agents or 760W type dispersion agent.
Described water is the deionized water of η < 10.
The present invention also provides a kind of preparation method of aqueous food container inner wall paint, comprises the starting material of following weight percent, waterborne polyester modified epoxy resin 30～45%, methyl-etherified aminoresin 8～10%, dimethylethanolamine 0.3 ~ 0.5%, KLH-I nanometer aging-resistant agent 0.5 ~ 1%, process white 5 ~ 10%, water 22 ~ 30%, pigment 20 ~ 25%, technical grade 810 defoamers 0.2 ~ 0.3%, CF4430 flow agent 0.06 ~ 0.1%, 760W type dispersion agent 0.5 ~ 0.8%, comprises the steps:
1) the waterborne polyester modified epoxy resin of formula ratio is added to clean sizing mixing in still, under the rotating speed of 500 ~ 600 revs/min, stir and add the dimethylethanolamine that the content of formula ratio is 100%, after stirring and dissolving completely to waterborne polyester modified epoxy resin for 5-10 minute, add water, technical grade 810 defoamers and the 760W type dispersion agent of formula ratio, under the rotating speed of 500 ~ 600 revs/min, stir 5 minutes, then add successively pigment, the process white of formula ratio, stir 5 minutes for subsequent use;
2) with sand mill grinding steps 1) slurry that obtains, reach below 15 μ m to fineness, squeeze in clean scuffing of cylinder bore, under the rotating speed of 500 ~ 600 revs/min, stir, and the content that adds the successively formula ratio methyl-etherified aminoresin that is 80%, the KLH-I nanometer aging-resistant agent of formula ratio, the CF4430 flow agent of formula ratio, stir and detect viscosity after 20 minutes, in the time that-4 glasss of paintings are 80 ~ 100s, stop stirring;
3) filtering and packaging: by step 2) the original paint liquid 100 order tiffanys that modulate filter, and the finished product paint liquid after filtering is packed in container, seal.
Described waterborne polyester modified epoxy resin is 30%, dimethylethanolamine is 0.4%, technical grade 810 defoamers are 0.2%, 760W type dispersion agent is 0.6%, and pigment is 25%, and process white is 10%, 80% methyl-etherified aminoresin is 10%, the agent of KLH-I nanometer aging-resistant is that 1%, CF4430 flow agent is 0.06%, and water is 22.74%.
Beneficial effect of the present invention: adopting the waterborne polyester modified epoxy resin of heat curing-type is main film forming matter, taking the water-compatible amino resin of methyl-etherified as linking agent, at high temperature highly cross-linked and through the processing of nanotechnology, the paint film high rigidity forming, high gloss, strong adhesion, waterproof, moisture proof, anticorrosion, high temperature resistant, fire-retardant, salt water resistance, acid and alkali-resistance under normal temperature, can resistance to ethanol, butanone wiping, after film curing, can store corrodibility food, and can not react with content food, it is the environmentally friendly machine that replaces traditional poisonous and harmful solvent-thinned paint, meet the standard-required of state food container material.
The present invention, taking water as solvent, can not have physical impairment to workman because of solvent evaporates in spraying process.The pigment simultaneously adopting is pigment dyestuff, not containing heavy metal, meets the standard-required of state food container material.
Embodiment
Embodiment 1:
Contain a large amount of volatile organic matters (VOC) in order to solve tradition as the epoxy resin equal solvent type coating of food cans paint binder, can not meet the problem of the requirement of environment-friendly type.The present embodiment provides a kind of aqueous food container inner wall paint, starting material by following weight percent are prepared from: waterborne polyester modified epoxy resin 30～45%, content is 80% methyl-etherified aminoresin 8～10%, dimethylethanolamine (DMEA) 0.3 ~ 0.5%, KLH-I nanometer aging-resistant agent 0.5 ~ 1%, process white 5 ~ 10%, water 22 ~ 30%, pigment 20 ~ 25%, 810 defoamers 0.2 ~ 0.3%, CF4430 flow agent 0.06 ~ 0.1%, 760W type dispersion agent 0.5 ~ 0.8%.
The principle of the invention is: waterborne polyester modified epoxy resin is matrix resin, methyl-etherified aminoresin is the linking agent of waterborne polyester modified epoxy resin, at high temperature produce with it crosslinking reaction, amine neutralizing agent is mainly used to neutralized aqueous polyester modified epoxy resin and generates salt, thereby can be dissolved in the water; Nano modifier is mainly used in improving the ageing resistance of coating.
Aqueous food container inner wall paint preparation process is as follows:
1) 300g waterborne polyester modified epoxy resin is added to clean sizing mixing in still, under the rotating speed of 500 revs/min, stir and add 3g dimethylethanolamine, after stirring and dissolving completely to waterborne polyester modified epoxy resin for 5-10 minute, add 300g water, 3g technical grade 810 defoamers and 760W type dispersion agent 8g, under the rotating speed of 500 revs/min, stir 5 minutes, then add successively 200g pigment, 90g process white, stir 5 minutes for subsequent use;
2) with sand mill grinding steps 1) slurry that obtains, reach below 15 μ m to fineness, squeeze in clean scuffing of cylinder bore, under the rotating speed of 500 revs/min, stir, and the content that adds the successively 80g methyl-etherified aminoresin that is 80%, the KLH-I nanometer aging-resistant agent of 5g, the CF4430 flow agent of 0.6g, stir and detect viscosity after 20 minutes, in the time that-4 glasss of paintings are 80 ~ 100s, stop stirring;
3) filtering and packaging: by step 2) the original paint liquid 100 order tiffanys that modulate filter, and the finished product paint liquid after filtering is packed in container, seal.
In the present embodiment, water is the deionized water of η < 10, and η represents electrical conductivity of water, and unit is μ S/cm, is the pure degree that characterizes water; Pigment is Rutile type Titanium Dioxide, and process white fineness is 800 orders.
Embodiment 2:
Aqueous food container inner wall paint preparation process is as follows:
1) 350g waterborne polyester modified epoxy resin is added to clean sizing mixing in still, under the rotating speed of 600 revs/min, stir and add 4g dimethylethanolamine, after stirring and dissolving completely to waterborne polyester modified epoxy resin for 5-10 minute, add 238.2g water, 2.5g technical grade 810 defoamers and 760W type dispersion agent 7g, under the rotating speed of 500 revs/min, stir 5 minutes, then add successively 225g pigment, 75g process white, stir 10 minutes for subsequent use;
2) with sand mill grinding steps 1) slurry that obtains, reach below 15 μ m to fineness, squeeze in clean scuffing of cylinder bore, under the rotating speed of 600 revs/min, stir, and the content that adds the successively 90g methyl-etherified aminoresin that is 80%, the KLH-I nanometer aging-resistant agent of 7.5g, the CF4430 flow agent of 0.8g, stir and detect viscosity after 20 minutes, in the time that-4 glasss of paintings are 80 ~ 100s, stop stirring;
3) filtering and packaging: by step 2) the original paint liquid 100 order tiffanys that modulate filter, and the finished product paint liquid after filtering is packed in container, seal.
In the present embodiment, water is the deionized water of η < 10, and pigment is Rutile type Titanium Dioxide, and process white fineness is 800 orders.
Embodiment 3:
Aqueous food container inner wall paint preparation process is as follows:
1) 400g waterborne polyester modified epoxy resin is added to clean sizing mixing in still, under the rotating speed of 600 revs/min, stir and add 5g dimethylethanolamine, after stirring and dissolving completely to waterborne polyester modified epoxy resin for 5-10 minute, add 203g water, 3g technical grade 810 defoamers and 760W type dispersion agent 8g, under the rotating speed of 600 revs/min, stir 5 minutes, then add successively 200g pigment, 80g process white, stir 10 minutes for subsequent use;
2) with sand mill grinding steps 1) slurry that obtains, reach below 15 μ m to fineness, squeeze in clean scuffing of cylinder bore, under the rotating speed of 600 revs/min, stir, and the content that adds the successively 90g methyl-etherified aminoresin that is 80%, the KLH-I nanometer aging-resistant agent of 10g, the CF4430 flow agent of 1g, stir and detect viscosity after 20 minutes, in the time that-4 glasss of paintings are 80 ~ 100s, stop stirring;
3) filtering and packaging: by step 2) the original paint liquid 100 order tiffanys that modulate filter, and the finished product paint liquid after filtering is packed in container, seal.
In the present embodiment, water is the deionized water of η < 10, and pigment is Rutile type Titanium Dioxide, and process white fineness is 800 orders.
Embodiment 4:
Aqueous food container inner wall paint preparation process is as follows:
1) 300g waterborne polyester modified epoxy resin is added to clean sizing mixing in still, under the rotating speed of 500 revs/min, stir and add 4g dimethylethanolamine, after stirring and dissolving completely to waterborne polyester modified epoxy resin for 5-10 minute, add 222.4g water, 2g technical grade 810 defoamers and 760W type dispersion agent 6g, under the rotating speed of 500 revs/min, stir 5 minutes, then add successively 255g pigment, 100g process white, stir 5 minutes for subsequent use;
2) with sand mill grinding steps 1) slurry that obtains, reach below 15 μ m to fineness, squeeze in clean scuffing of cylinder bore, under the rotating speed of 500 revs/min, stir, and the content that adds the successively 100g methyl-etherified aminoresin that is 80%, the KLH-I nanometer aging-resistant agent of 10g, the CF4430 flow agent of 0.6g, stir and detect viscosity after 20 minutes, in the time that-4 glasss of paintings are 80 ~ 100s, stop stirring;
3) filtering and packaging: by step 2) the original paint liquid 100 order tiffanys that modulate filter, and the finished product paint liquid after filtering is packed in container, seal.
In the present embodiment, water is the deionized water of η < 10, and pigment is that 250g Rutile type Titanium Dioxide and 5g are dim, and process white fineness is 800 orders.
Waterborne polyester modified epoxy resin in the various embodiments described above is the HD-MB019 waterborne polyester modified epoxy resin that the beautiful heavy chemicals of Beijing Jin Hui company limited produces, aqueous food container inner wall paint in the embodiment 1,2,3 preparing by above-mentioned steps, coating color is white, product coating in embodiment 4 is light grey, can select different pigment according to distinct colors demand.Performance to aqueous food container inner wall paint obtained above is tested, can shape film forming matter after 7 minutes through the hot setting of≤200 DEG C after product film, by 60 ° of glossometers test gloss of film degree, all more than 80, film forming matter degree of crosslinking is more than 90%, corrosion resistance and good.
The each the performance test results of product of the present invention is as shown in the table:
Table 1 aqueous food container inner wall paint performance
In sum, aqueous food container inner wall paint hardness of paint film prepared by the present invention is high, good luster, strong adhesion, waterproof, moisture proof, anticorrosion, high temperature resistant, salt water resistance, acid and alkali-resistance, ethanol-tolerant, resistance to solvent, resistance to gasoline, anti-aging, antipollution, snappiness is good, having environmental protection, safety, do not fire the advantages such as not quick-fried, is the environmentally friendly machine that replaces traditional poisonous and harmful solvent-thinned paint, meets the standard-required of state food container material.
The product performance testing method that the present embodiment does not describe in detail belongs to the known or common testing methods of the industry, here not narration one by one.
More than exemplifying is only to illustrate of the present invention, does not form the restriction of the protection domain to invention, within the every and same or analogous design of the present invention all belongs to protection scope of the present invention.
Claims (5)
1. an aqueous food container inner wall paint, starting material by following weight percent are prepared from: resin 30～45%, linking agent 8～10%, amine neutralizing agent 0.3 ~ 0.5%, nano modifier 0.5 ~ 1%, filler 5 ~ 10%, water 22 ~ 30%, pigment 20 ~ 25%, defoamer 0.2 ~ 0.3%, flow agent 0.06 ~ 0.1%, dispersion agent 0.5 ~ 0.8%.
2. a kind of aqueous food container inner wall paint according to claim 1, it is characterized in that: described resin is waterborne polyester modified epoxy resin, linking agent is that content is 80% methyl-etherified aminoresin, amine neutralizing agent is dimethylethanolamine, nano modifier is the agent of KLH-I nanometer aging-resistant, and filler is that fineness is 800 object process whites, and defoamer is technical grade 810 defoamers, flow agent is CF4430 flow agent, and dispersion agent is 27000 type dispersion agents or 760W type dispersion agent.
3. a kind of aqueous food container inner wall paint according to claim 1, is characterized in that: described water is the deionized water of η < 10.
4. a preparation method for aqueous food container inner wall paint, comprises the starting material of following weight percent, waterborne polyester modified epoxy resin 30～45%, methyl-etherified aminoresin 8～10%, dimethylethanolamine 0.3 ~ 0.5%, KLH-I nanometer aging-resistant agent 0.5 ~ 1%, process white 5 ~ 10%, water 22 ~ 30%, pigment 20 ~ 25%, technical grade 810 defoamers 0.2 ~ 0.3%, CF4430 flow agent 0.06 ~ 0.1%, 760W type dispersion agent 0.5 ~ 0.8%, is characterized in that, comprises the steps:
1) the waterborne polyester modified epoxy resin of formula ratio is added to clean sizing mixing in still, under the rotating speed of 500 ~ 600 revs/min, stir and add the dimethylethanolamine that the content of formula ratio is 100%, after stirring and dissolving completely to waterborne polyester modified epoxy resin for 5-10 minute, add water, technical grade 810 defoamers and the 760W type dispersion agent of formula ratio, under the rotating speed of 500 ~ 600 revs/min, stir 5 minutes, then add successively pigment, the process white of formula ratio, stir 5 minutes for subsequent use;
2) with sand mill grinding steps 1) slurry that obtains, reach below 15 μ m to fineness, squeeze in clean scuffing of cylinder bore, under the rotating speed of 500 ~ 600 revs/min, stir, and the content that adds the successively formula ratio methyl-etherified aminoresin that is 80%, the KLH-I nanometer aging-resistant agent of formula ratio, the CF4430 flow agent of formula ratio, stir and detect viscosity after 20 minutes, in the time that-4 glasss of paintings are 80 ~ 100s, stop stirring;
3) filtering and packaging: by step 2) the original paint liquid 100 order tiffanys that modulate filter, and the finished product paint liquid after filtering is packed in container, seal.
5. the preparation method of a kind of aqueous food container inner wall paint according to claim 4, it is characterized in that: described waterborne polyester modified epoxy resin is 30%, dimethylethanolamine is 0.4%, and technical grade 810 defoamers are that 0.2%, 760W type dispersion agent is 0.6%, pigment is 25%, process white is that 10%, 80% methyl-etherified aminoresin is that the agent of 10%, KLH-I nanometer aging-resistant is 1%, CF4430 flow agent is 0.06%, and water is 22.74%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362360.6A CN104109449B (en) | 2014-07-28 | A kind of aqueous food container inner wall paint and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362360.6A CN104109449B (en) | 2014-07-28 | A kind of aqueous food container inner wall paint and preparation method thereof |
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| CN104109449A true CN104109449A (en) | 2014-10-22 |
| CN104109449B CN104109449B (en) | 2017-01-04 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969010A (en) * | 2016-06-01 | 2016-09-28 | 珠海市美筑新材料有限公司 | Water-soluble coating resisting dish washing machine and preparation method of water-soluble coating |
| CN106433391A (en) * | 2016-08-26 | 2017-02-22 | 蚌埠飞浦科技包装材料有限公司 | Pop can inner wall coating used for food packaging |
| CN107384123A (en) * | 2017-07-27 | 2017-11-24 | 安徽美景工艺品有限公司 | A kind of wicker plaiting article meal basket special coating and preparation method thereof |
| CN109536032A (en) * | 2018-10-24 | 2019-03-29 | 天恒涂料有限公司 | A kind of aqueous drinking-water storehouse anticorrosive paint |
| CN110204998A (en) * | 2019-06-27 | 2019-09-06 | 佛山市顺德区顺峰药品包装材料有限公司 | A kind of aqueous inside courtyard that aluminium soft tube packaging inner coating uses |
| CN110295006A (en) * | 2019-05-14 | 2019-10-01 | 深圳市能驭生态化工科技有限公司 | A kind of food cans are interior to apply aqueous ecologic coating of heat cure and preparation method thereof and construction method |
| CN114854272A (en) * | 2022-06-23 | 2022-08-05 | 珠海市宏州新材料科技有限公司 | Waterborne modified polyester paint for lunch boxes |
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| GB2037291B (en) * | 1978-11-02 | 1983-01-19 | Ppg Industries Inc | Carboxylated amine polymers and coating compositions containing same |
| CN101735703A (en) * | 2009-12-15 | 2010-06-16 | 重庆斯耐博涂料有限公司 | Aqueous environment-friendly packaging steel drum paint and preparation method thereof |
| CN102146248A (en) * | 2011-04-08 | 2011-08-10 | 广州慧谷化学有限公司 | Acid resistance and high temperature resistance antiseptic waterborne coating for inner wall of pop can |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2037291B (en) * | 1978-11-02 | 1983-01-19 | Ppg Industries Inc | Carboxylated amine polymers and coating compositions containing same |
| CN101735703A (en) * | 2009-12-15 | 2010-06-16 | 重庆斯耐博涂料有限公司 | Aqueous environment-friendly packaging steel drum paint and preparation method thereof |
| CN102146248A (en) * | 2011-04-08 | 2011-08-10 | 广州慧谷化学有限公司 | Acid resistance and high temperature resistance antiseptic waterborne coating for inner wall of pop can |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969010A (en) * | 2016-06-01 | 2016-09-28 | 珠海市美筑新材料有限公司 | Water-soluble coating resisting dish washing machine and preparation method of water-soluble coating |
| CN106433391A (en) * | 2016-08-26 | 2017-02-22 | 蚌埠飞浦科技包装材料有限公司 | Pop can inner wall coating used for food packaging |
| CN107384123A (en) * | 2017-07-27 | 2017-11-24 | 安徽美景工艺品有限公司 | A kind of wicker plaiting article meal basket special coating and preparation method thereof |
| CN109536032A (en) * | 2018-10-24 | 2019-03-29 | 天恒涂料有限公司 | A kind of aqueous drinking-water storehouse anticorrosive paint |
| CN110295006A (en) * | 2019-05-14 | 2019-10-01 | 深圳市能驭生态化工科技有限公司 | A kind of food cans are interior to apply aqueous ecologic coating of heat cure and preparation method thereof and construction method |
| CN110204998A (en) * | 2019-06-27 | 2019-09-06 | 佛山市顺德区顺峰药品包装材料有限公司 | A kind of aqueous inside courtyard that aluminium soft tube packaging inner coating uses |
| CN114854272A (en) * | 2022-06-23 | 2022-08-05 | 珠海市宏州新材料科技有限公司 | Waterborne modified polyester paint for lunch boxes |
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