CN101319105B - Paint stripper of oil emulsion-in-water - Google Patents
Paint stripper of oil emulsion-in-water Download PDFInfo
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- CN101319105B CN101319105B CN2008100226341A CN200810022634A CN101319105B CN 101319105 B CN101319105 B CN 101319105B CN 2008100226341 A CN2008100226341 A CN 2008100226341A CN 200810022634 A CN200810022634 A CN 200810022634A CN 101319105 B CN101319105 B CN 101319105B
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Abstract
The invention discloses an oil-in-water emulsion paint remover. The compositions in percentage by weight of the paint remover are: 2 to 20 percent of nucleophilic monomer, 20 to 60 percent of macromolecular solvent, 3 to 10 percent of gamma-butyrolactone, 3 to 15 percent of alkyl butyl glycol ether, 0.5 to 3 percent of surface active agent (wherein the ratio between a non-ionic surface active agent and an ionic surface active agent is between 2:3 and 3:2 according to mass ratio), 2 to 5 percent of thickening agent, 1.5 to 4 percent of corrosion inhibitor and the balance being water. The oil-in-water emulsion paint remover does not contain a volatile chlorinated organic solvent or other haloid organic solvents, strong acid and strong base; meanwhile, the operative temperature of the paint remover is normal temperature, and the paint remover does not need to be heated; moreover, no oil film is formed, i.e. no secondary coating is needed.
Description
Technical field
The present invention relates to a kind of paint remover, relate generally to a kind of O/w emulsion type paint remover of environmental protection.
Background technology
Paint film is through exposing to the open air for a long time, can occur wearing out, be full of cracks, peeling and phenomenon such as come off, and causes paint film to lose provide protection.Paint remover commonly used takes off depainting so that application is newly coated with lacquer.Mostly paint remover on the market is to come depainting with high volatility and to the deleterious chloro thing of ozonosphere, though effect is good operator and environment is had very big harm but up to the present.Also some paint remover will be used strong acid or highly basic, as NaOH, and the vitriol oil, ammoniacal liquor etc., to base material, operator and environment all have very big harm.The perhaps also good slightly paint remover of some Environmental compatibility, but need boiling heating or the like, improved operation easier for the application in the large-scale outdoor work environment.
In the last few years, people more and more paid attention to for environmental problem, and various Chemicals are had a lot of requirements about Environmental compatibility, as the existing GB restriction of the volatility of Chemicals.It is neutral that therefore a lot of scholars are devoted to research and development, and environmental protection is to the free from corrosion efficient paint remover in metallic surface.
Summary of the invention
For solve the paint remover toxicity that exists in the prior art big, shortcoming such as need heat when using, the invention provides a kind of paint stripper of oil emulsion-in-water, have that toxicity is low, normal temperature uses, do not damage the advantage that base material does not influence the secondary application.
Technical scheme of the present invention is a kind of paint stripper of oil emulsion-in-water, and component is, by weight percentage:
2%～20% nucleophilic monomer,
20%～60% macromole solvent,
3%～10% gamma-butyrolactone,
3%～15% alkyl diol butyl ether,
0.5%～3% tensio-active agent, wherein by quality than nonionic surface active agent: ionogenic surfactant is between 2: 3 to 3: 2,
2%～5% thickening material,
1.5%～4% inhibiter,
Surplus is a water.
Described nucleophilic monomer is any one or a few in hydrogen peroxide, ethyl acetate, acetone, methyl-sulphoxide, the carbonates.Described carbonates is meant propylene carbonate or methylcarbonate.Described macromole solvent is any one or a few the mixture in phenylcarbinol, methyl-phenoxide, N-Methyl pyrrolidone, the isophorone.Described alkyl diol butyl ether is meant butyl glycol ether, Diethylene Glycol butyl ether.Described nonionic surface active agent is any one or a few in octyl phenyl Soxylat A 25-7, Tween-60, the polyoxyethylenesorbitan sorbitan monooleate; Described ionogenic surfactant is any one or a few in sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, the potassium oleate.Described thickening material is methylcellulose gum, Xylo-Mucine, polyvinyl alcohol, one or more in the sodium polyacrylate.Described inhibiter is any one in imidazoles, naphthenic acid imidazoline or the benzotriazole.
The core of remover recipe is the selection of suitable solvent.Test us through a large amount of explorations and find that general ketone and ester can dissolve Synolac and Polyurethane; Obtain stable O/w emulsion with water miscible thickening material and anion surfactant and the composite use of nonionogenic tenside again.For the depainting process, what work more is to be water base component, and the oil base component more helps the swelling paint film, the two is mixed into emulsion state can make the effect between paint remover and the paint film more even; Owing to be O/w emulsion, can not stay oil film after effect finishes simultaneously, be easy to application and newly coat with lacquer at substrate surface.
Water base component be meant can dissolve each other with water or in water the bigger component of solubleness, the oil base component is meant the very little even insoluble component of solubleness in water.The compound method of paint stripper of oil emulsion-in-water of the present invention is earlier with the water-soluble water solution A of making of water base component, and the oil base component is mixed into mixture B, mixture B is added in the solution A to mix then, adds thickening material and inhibiter at last again.This preparation order is very important, because all be the water-based matrix among the A, B is slowly added among the A to guarantee that the mixture that obtains is an O/w emulsion.The addition sequence of thickening material and inhibiter imidazoles also is the stable existence for mixture in addition, can the addition sequence of thickening material form stable emulsion to mixture and have a significant impact, and adds the molecule uniform distribution that thickening material will be difficult to make all size in the mixture too early; The inhibiter imidazoles has demulsification, and addition sequence is placed on final emulsion when having stablized.
Below detailed description by each component further describe the present invention.
Phenylcarbinol, carbonates, pyrrolidone and small molecules ester and ketone are the surface polarities with reference to paint film, the data of polymer molecule contact angle and each solvent molecule dipole moment are selected to be gone out, and the solvent of forgo high volatility and strong toxicity.Wherein the small molecules solvent is in order to infiltrate through as early as possible in the polymkeric substance paint film, and macromole solvent such as phenylcarbinol, and isophorone is then for can the swelling paint film.Macromole solvent and small molecules solvent can both be at stable existence under the effect of tensio-active agent and thickening material in the paint remover emulsions.Gamma-butyrolactone can be assisted macromole dissolution with solvents paint film, and the alkyl diol butyl ether is the solvent of paint, resin.For water base component and oil base component can be present in in the mixture by jointly stabilizing, need select suitable tensio-active agent for use, certainly, because the influence of selected polarity of solvent and HLB value is to select anion surfactant and the composite use of nonionogenic tenside for use among the present invention.Nonionic surface active agent is selected from the octyl phenyl Soxylat A 25-7, Tween-60, and polyoxyethylenesorbitan sorbitan monooleate selects one or more according to circumstances in these several nonionogenic tensides; Ionogenic surfactant is selected from sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, and potassium oleate selects one or more according to circumstances in these several anion surfactants; The ratio of nonionic surface active agent and ionogenic surfactant is between 2: 3 to 3: 2, looks the variation of mixed solvent and makes adjustment; Total consumption of tensio-active agent is no more than 3%, the upper limit here is a practical upper limit, because it is very little to the depainting effectiveness affects to increase tensio-active agent, and lower consumption can make the paint remover mixture very unstable, the small molecules solvent is volatilization fast, and depainting efficient is just had a greatly reduced quality.
Beneficial effect of the present invention is:
1. the pH value of paint remover of the present invention is 5.5～7.5, do not contain that toxicity is big, the material of high volatility, the character gentleness.
2. the present invention can remove polyurethane paint, alkyd varnish, and paint and various varnish, enamel paint, lacquer etc., particularly polyurethane paint and alkyd varnish, remarkably productive.
3. be paint stripper of oil emulsion-in-water, used water is dashed and is removed paint film, to the base material not damaged, reaches environmental protection depainting purpose, and can not stay oil film, does not influence the secondary application.
4. paint remover of the present invention at room temperature uses, and has exempted heating unit, makes that operating process is easier should go.
5. do not use acid or alkali in the paint remover of the present invention, very little to metal base corrodibility, can not damage the application surface.
Embodiment:
Further explain technical scheme and the technique effect of inventing below in conjunction with example, but these examples are implemented and unrestricted embodiments of the present invention.The present invention has a lot of different embodiments, has more than to be limited to content described in this specification sheets.
Hydrogen peroxide, ethyl acetate among the present invention: analytical pure, Nanjing rather try chemical reagent company limited and produce; Acetone: analytical pure, Shanghai Yin Xiang bio tech ltd; Methyl-sulphoxide: analytical pure, Tianjin Da Mao chemical reagent factory; Propylene carbonate, methylcarbonate, N-Methyl pyrrolidone, gamma-butyrolactone, potassium oleate: chemical pure, Chemical Reagent Co., Ltd., Sinopharm Group; Isophorone, methylcellulose gum: nearly branch, Chemical Reagent Co., Ltd., Sinopharm Group; Phenylcarbinol, methyl-phenoxide: analytical pure, the Long Huagongshijichang of Chengdu section; Butyl glycol ether: chemical pure, Hualun Chemical Co., Ltd., Jiangsu; Diethylene Glycol butyl ether, octyl phenyl Soxylat A 25-7: chemical pure, Shanghai Ling Feng chemical reagent company limited; Tween-60, polyoxyethylenesorbitan sorbitan monooleate: Shanghai reagent company of Chinese Medicine group; Sodium dodecylbenzene sulfonate, sodium laurylsulfonate: chemical pure, the Long Huagongshijichang of Chengdu section; Xylo-Mucine: nearly branch, the Long Huagongshijichang of Chengdu section; Polyvinyl alcohol, sodium polyacrylate: Chemical Reagent Co., Ltd., Sinopharm Group; Imidazoles: analytical pure, Tianjin good fortune chemical reagent in morning factory; Naphthenic acid imidazoline: chemical pure, Zibo epipodium Fine Chemical Co., Ltd; Benzotriazole: analytical pure, the sincere chemical reagent in Shanghai company limited.
A kind of paint stripper of oil emulsion-in-water, component be, by weight percentage:
2%～20% nucleophilic monomer,
20%～60% macromole solvent,
3%～10% gamma-butyrolactone,
3%～15% alkyl diol butyl ether,
0.5%～3% tensio-active agent, wherein by quality than nonionic surface active agent: ionogenic surfactant is between 2: 3 to 3: 2,
2%～5% thickening material,
1.5%～4% inhibiter,
Surplus is a water.
Described nucleophilic monomer is that in hydrogen peroxide, ethyl acetate, acetone, methyl-sulphoxide, the carbonates any one or a few is composite, and consumption can be any number in 2～20%, as 2%, 13%, 20%.Described carbonates is meant propylene carbonate or methylcarbonate.Described macromole solvent is any one or a few the mixture in phenylcarbinol, methyl-phenoxide, N-Methyl pyrrolidone, the isophorone, and consumption is any number in 20～60%, as 20%, 41%, 60%.Described alkyl diol butyl ether is meant butyl glycol ether, Diethylene Glycol butyl ether, and consumption is any number in 3～15%, as 3%, 8%, 15%.Described nonionic surface active agent is any one or a few in octyl phenyl Soxylat A 25-7, Tween-60, the polyoxyethylenesorbitan sorbitan monooleate; Described ionogenic surfactant is any one or a few in sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, the potassium oleate.The consumption of the tensio-active agent of described nonionic surface active agent and ionic is any number in 0.5～3%, as 0.5%, 1.3%, 3%, and nonionic surface active agent: the mass ratio of ionogenic surfactant is any number between 2: 3～3: 2.Described thickening material is methylcellulose gum, Xylo-Mucine, polyvinyl alcohol, and one or more in the sodium polyacrylate, consumption are 2～5% any number, as 2%, 3%, 5%.Described inhibiter is any one in imidazoles, naphthenic acid imidazoline or the benzotriazole, and consumption is any number between 1.5～4%, as 1.5%, 2.6%, 4%.
Embodiment 1
A N-Methyl pyrrolidone 10g
Gamma-butyrolactone 5g
Butyl glycol ether 9g
Isophorone 10g
Acetone 5g
Octyl phenyl Soxylat A 25-7 0.8g
Sodium lauryl sulphate 1g
Water 25g
With reagent mix described in the A, stir
B phenylcarbinol 20g
Methyl-phenoxide 10g
The B reagent mix is even, again B is slowly added among the A, add imidazoles 2g again, stirring makes it slowly to add simultaneously uniformly the 2.2g methylcellulose gum, gets paint remover.
Stripping test: paint remover is brushed in the urethane test specimen, synthetic enamel test specimen and acrylic paint test specimen surface, the paint film swelling is left the metallic surface after four hours.Can be with the paint film water of taking off towards removing.Observe the no corrosion phenomenon in test specimen surface.
Embodiment 2
A N-Methyl pyrrolidone 8g
Gamma-butyrolactone 4g
Butyl glycol ether 6g
Ethyl acetate 5g
Tween-60 1g
Sodium dodecylbenzene sulfonate 1g
Hydrogen peroxide 5g
Water 25g
With reagent mix described in the A, stir
B phenylcarbinol 30g
Methyl-phenoxide 5g
Methyl-sulphoxide 5g
Slowly add again after reagent mixes among the B among the A, stir and make it even, add benzotriazole 3g, when constantly stirring, add Xylo-Mucine 2g, get paint remover.
Stripping test: paint remover is sprayed at the polyurethane paint test specimen, acrylic paint and urethane test specimen surface, urethane paint film swelling is left the metallic surface after five hours.Can be with the paint film water of taking off towards removing.Observe the no corrosion phenomenon in test specimen surface.
Embodiment 3
A N-Methyl pyrrolidone 20g
Gamma-butyrolactone 4g
Acetone 5g
Methyl-sulphoxide 5g
Diethylene Glycol butyl ether 10g
Polyoxyethylenesorbitan sorbitan monooleate 0.9g
Potassium oleate 1g
Water 20g
With reagent mix described in the A, stir
B phenylcarbinol 20g
Methyl-phenoxide 8g
Reagent mixes and slowly adds among the A again among the B, adds benzotriazole 3g stirring and makes it evenly to add methylcellulose gum 2g, polyvinyl alcohol 1.1g again, gets the body of paste paint remover.
Stripping test: paint remover is brushed in the polyurethane paint test specimen, synthetic enamel test specimen and vinylformic acid test specimen surface, the paint film swelling is left the metallic surface after four hours.Can be with the paint film water of taking off towards removing.Observe the no corrosion phenomenon in test specimen surface.
Embodiment 4
A N-Methyl pyrrolidone 28g
Gamma-butyrolactone 7g
Butyl glycol ether 5g
Ethyl acetate 4g
Hydrogen peroxide 4g
Polyoxyethylenesorbitan sorbitan monooleate 0.8g
Sodium lauryl sulphate 1g
Water 20g
With reagent mix described in the A, stir
B phenylcarbinol 15g
Methyl-phenoxide 5g
Methylcarbonate 4g
Reagent mixes and slowly adds among the A again among the B, and adding benzotriazole 2.5g, stirring make it evenly to add sodium polyacrylate 1.7g again, and methylcellulose gum 2g gets the body of paste paint remover.
Stripping test: paint remover is brushed in the polyurethane paint test specimen, synthetic enamel test specimen and vinylformic acid test specimen surface, the paint film swelling is left the metallic surface after six hours.Can be with the paint film water of taking off towards removing.Observe the no corrosion phenomenon in test specimen surface.
Embodiment 5
A N-Methyl pyrrolidone 30g
Gamma-butyrolactone 4g
Methyl-sulphoxide 5g
Butyl glycol ether 10g
Polyoxyethylenesorbitan sorbitan monooleate 0.8g
Sodium dodecylbenzene sulfonate 1.2g
Hydrogen peroxide 4g
Water 10g
With reagent mix described in the A, stir
B phenylcarbinol 15g
Methyl-phenoxide 6g
Methylcarbonate 10g
Reagent mixes and slowly adds among the A again among the B, adds naphthenic acid imidazoline 2g stirring and makes it evenly to add sodium polyacrylate 1g again, methylcellulose gum 1g; Obtain paint remover.
Stripping test: paint remover is brushed in the polyurethane paint test specimen, synthetic enamel test specimen and vinylformic acid test specimen surface, the paint film swelling is left the metallic surface after six hours.Can be with the paint film water of taking off towards removing.Observe the no corrosion phenomenon in test specimen surface.
The paint remover of comprehensive embodiment 1～5, test effect sees the following form
| The paint remover numbering | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| The polyurethane paint test specimen | ?★ | ?★ | ?☆ | ?★ | ?★ |
| The synthetic enamel test specimen | ?☆ | ?☆ | ?★ | ?☆ | ?☆ |
| The acrylic paint test specimen | ?◎ | ?◎ | ?★ | ?☆ | ?☆ |
★: the expression paint removing effect is good, and water is broken through visual inspection has lacquer less than the surface vestige
☆: the expression paint removing effect is better, and visual inspection has the seldom vestige of amount lacquer, the feedwater pressurization,
Can dash and remove paint film
◎: visual inspection has the vestige of more lacquer, is difficult to water towards removing
As mentioned above, the present invention is effectively as paint remover, regardless of kind of painting and its base material kind of use.When the N-Methyl pyrrolidone consumption increases, relatively good for the removal effect of polyurethane paint; When phenylcarbinol increases, relatively good for the removal effect of Synolac.
Test shows that after 5 weeks of placement, its viscosity and gel stability are good when becoming gel form in 10 to 40 ℃ temperature range.By adjusting the consumption of thickening material, the viscosity of paint remover is between 20s to 150s.The corrodibility of paint remover of the present invention is little, uses after back 1 month and does not observe metallic corrosion yet.
Claims (7)
1. a paint stripper of oil emulsion-in-water is characterized in that component is, by weight percentage:
2%～20% nucleophilic monomer,
20%～60% macromole solvent, described macromole solvent are any one or a few the mixture in phenylcarbinol, methyl-phenoxide, N-Methyl pyrrolidone, the isophorone,
3%～10% gamma-butyrolactone,
3%～15% alkyl diol butyl ether,
0.5%～3% tensio-active agent, wherein by quality than nonionic surface active agent: ionogenic surfactant is between 2: 3 to 3: 2,
2%～5% thickening material,
1.5%～4% inhibiter,
Surplus is a water.
2. paint stripper of oil emulsion-in-water as claimed in claim 1 is characterized in that described nucleophilic monomer is any one or a few in hydrogen peroxide, ethyl acetate, acetone, methyl-sulphoxide, the carbonates.
3. paint stripper of oil emulsion-in-water as claimed in claim 2 is characterized in that described carbonates is meant propylene carbonate or methylcarbonate.
4. paint stripper of oil emulsion-in-water as claimed in claim 1 is characterized in that described alkyl diol butyl ether is meant butyl glycol ether, Diethylene Glycol butyl ether.
5. paint stripper of oil emulsion-in-water as claimed in claim 1 is characterized in that described nonionic surface active agent is any one or a few in octyl phenyl Soxylat A 25-7, Tween-60, the polyoxyethylenesorbitan sorbitan monooleate; Described ionogenic surfactant is any one or a few in sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, the potassium oleate.
6. paint stripper of oil emulsion-in-water as claimed in claim 1 is characterized in that described thickening material is methylcellulose gum, Xylo-Mucine, polyvinyl alcohol, one or more in the sodium polyacrylate.
7. paint stripper of oil emulsion-in-water as claimed in claim 1 is characterized in that described inhibiter is any one in imidazoles, naphthenic acid imidazoline or the benzotriazole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100226341A CN101319105B (en) | 2008-07-18 | 2008-07-18 | Paint stripper of oil emulsion-in-water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100226341A CN101319105B (en) | 2008-07-18 | 2008-07-18 | Paint stripper of oil emulsion-in-water |
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| CN101319105A CN101319105A (en) | 2008-12-10 |
| CN101319105B true CN101319105B (en) | 2010-04-21 |
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| CN2008100226341A Expired - Fee Related CN101319105B (en) | 2008-07-18 | 2008-07-18 | Paint stripper of oil emulsion-in-water |
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| CN102392255B (en) * | 2011-10-10 | 2013-04-03 | 南昌航空大学 | Preparation method of sodium polyacrylate dispersing imidazoline corrosion inhibitor |
| CN102534632B (en) * | 2011-12-06 | 2013-11-27 | 长春市一博升科技有限公司 | Degumming agent and preparation method and application thereof |
| CN102807781B (en) * | 2012-08-24 | 2014-12-10 | 刘杰 | Preparation method of paint cleaning agent |
| CN103396696A (en) * | 2013-07-24 | 2013-11-20 | 张运泉 | Biodegradable environmentally-friendly paint remover |
| CN104194467A (en) * | 2014-09-18 | 2014-12-10 | 合肥工业大学 | Water-based varnish remover for polyurethanes varnished wire |
| CN104341853A (en) * | 2014-10-30 | 2015-02-11 | 广东省石油化工研究院 | Environment-friendly doodle cleaning agent and preparation method thereof |
| CN104371415B (en) * | 2014-11-13 | 2016-06-08 | 南京澳永嘉金属材料有限公司 | A kind of efficient paint remover and its preparation method |
| CN104804515B (en) * | 2015-04-23 | 2017-12-29 | 广东工业大学 | A kind of environment-protecting and non-poisonous paint stripper and preparation method thereof |
| CN106336718A (en) * | 2016-08-23 | 2017-01-18 | 启东市震宇玩具有限公司 | Oil-in-water emulsion paint remover |
| CN106519782A (en) * | 2016-11-08 | 2017-03-22 | 嘉善弘欣化工厂（普通合伙） | Paint scavenger and preparation method thereof |
| SG11201907982TA (en) * | 2017-03-28 | 2019-09-27 | Neos Co Ltd | Coating film stripping composition and method for stripping coating film |
| CN107286727A (en) * | 2017-06-28 | 2017-10-24 | 常州文诺纺织品有限公司 | A kind of watery paint remover and preparation method thereof |
| WO2020045361A1 (en) * | 2018-08-30 | 2020-03-05 | 株式会社ネオス | Coating film removing composition and method for removing coating film |
| CN111019429A (en) * | 2019-12-04 | 2020-04-17 | 清研高装科技(天津)有限公司 | Paste paint remover and preparation process and application thereof |
| CN115595135B (en) * | 2021-07-08 | 2023-09-01 | 中国石油化工股份有限公司 | Use of cycloalkyl imidazolines for inhibiting the formation of natural gas hydrates and compositions containing same |
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