CN103555047A - Paint remover and preparation method thereof - Google Patents
Paint remover and preparation method thereof Download PDFInfo
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- CN103555047A CN103555047A CN201310520097.4A CN201310520097A CN103555047A CN 103555047 A CN103555047 A CN 103555047A CN 201310520097 A CN201310520097 A CN 201310520097A CN 103555047 A CN103555047 A CN 103555047A
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Abstract
The invention discloses a paint remover and a preparation method thereof. The paint remover comprises the following components in percentage by weight: 20-70% of a main solvent, 5-30% of formic ether, 0.5-5% of a surfactant, 0.5-5% of thickening agent and 5-40% of water. The paint remover is prepared by adding the main solvent into a stirring kettle, subsequently adding the thickening agent and the surfactant, starting stirring and uniformly dissolving, further adding water to stir uniformly, subsequently adding benzyl chloride (optionally), formic ether and a corrosion inhibitor in sequence, continuously stirring till the components are uniformly emulsified in the thick state, stopping stirring, discharging and packaging. The paint remover is convenient and simple to use, is capable of effectively eliminating paint films on various base materials, is free of substances, such as formic acid and ammonium hydroxide which are harmful to the environment and the base materials, and is free of components, such as paraffin and kerosene which can hinder the paint film from recoating; in addition, the paint remover has an ideal removing effect on stoving varnish as the optional benzyl chloride is added, so that the paint remover has a wide market prospect.
Description
Technical field
The present invention relates to depainting technical field, particularly a kind of paint remover and preparation method thereof.
Background technology
Paint remover is mainly used in removing the paint film on the substrates such as metal, timber, compares with traditional physics depainting method (as blast, strike shovel, cutter is scraped etc.), have convenient, fast, to base material without advantages such as physics losses.
Traditional paint remover is divided into acid paint remover and basic paint remover, acid paint remover is mainly comprised of the vitriol oil, phosphoric acid, nitric acid etc., but these strong acid cause corrosion toward contact meeting to metal base when with paint film generation acidolysis reaction, particularly concentrated nitric acid, hydrochloric acid also can produce acid mist, during use, easily human body are damaged.The main component of basic paint remover is the highly basic such as sodium hydroxide, potassium hydroxide, if these highly basic misoperation human body skin of also may burning in use, and basic paint remover conventionally needs heating when depainting, also to user, brought inconvenience.
The detrimentally affect bringing for fear of strong acid, strong basicity paint remover, in recent years, people are normal to be adopted and take the paint remover that the organism such as benzene homologues, hydrochloric ether are main component, can reach the effect of effective removing paint film between the organism in this class paint remover and paint film by series of physical chemical processes such as dissolving, expand, permeate, peel off.
For example authorizing publication number is the patent of invention of CN101875796A, a kind of formula of paint remover is disclosed, in the main component of this paint remover, except comprising methylene dichloride 70-80 especially, also comprise formic acid 1.8-2.2 part, paraffin 1.8-2.2 part, phosphatase 11 .4-1.6 part, ammoniacal liquor 8-12 part etc.Although this paint remover can reach certain paint removing effect, exist following problem:
First, formic acid in this paint remover, phosphoric acid and ammoniacal liquor are in order to improve depainting efficiency, to strengthen the common permeate agent that paint removing effect adopts in this area, Main Function is to strengthen infiltration and the swelling actions of main solvent in paint film such as methylene dichloride, accelerate paint stripping, but for the acids such as formic acid, phosphoric acid, although its ratio does not have traditional acid paint remover high, but still can cause corrosion to metal base, affect performance and the work-ing life of base material.In addition, formic acid and ammoniacal liquor have stronger volatility, in the use procedure of paint remover, are not only easily splashed on human body skin and cause and burn, and also can produce irritating smell, polluted air, and Long Term Contact also can insulting respiratory mucosa.Common permeate agent also has kerosene, although kerosene is all harmless to base material and human body, it can be attached to substrate surface after depainting, for the spraying again of paint film brings inconvenience.
Secondly, the paraffin using in this paint remover, is in state of the art, the coagulated substance adding in order to prevent the too fast volatilization of paint remover.But after depainting, these paraffin also can be the same with above-mentioned permeate agent kerosene, remains in the surface of base material, and extremely difficult removing, also for coating paint film has again caused obstruction.
Except the problems referred to above, paint remover of the prior art also exists for the undesirable defect of the removing effect of baking vanish, and baking vanish is formed through high bake sizing by multilayer paint conventionally, and paint film is more firm, sticking power is very strong, and therefore common paint remover is often difficult for its removing.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of paint remover and preparation method thereof.This paint remover is easy to use, simple, can effectively remove paint film on various base materials, to the infringement of the corrosion-free grade of base material, also harmless to human body during use, and containing dirt settlings such as paraffin, kerosene, facilitates the spraying again of paint film.
Paint remover provided by the invention, comprises the component of following weight percentage: main solvent 20～70%, manthanoate 5～30%, tensio-active agent 0.5～5%, thickening material 0.5～5% and water 5～40%.
Preferably, described paint remover comprises the component of following weight percentage: main solvent 20～70%, benzyl chloride 0.1～20%, manthanoate 5～30%, tensio-active agent 0.5～5%, thickening material 0.5～5%, inhibiter 0.1～5% and water 5～40%.
Preferably, in described paint remover, the weight percentage of each component is: main solvent 40～60%, benzyl chloride 0～10%, manthanoate 8～25%, tensio-active agent 1～3%, thickening material 0.5～3%, inhibiter 0～2% and water 10～35%.
Preferably, described main solvent is the mixture of phenylcarbinol or dichloro-alkane or phenylcarbinol and dichloro-alkane.
Preferably, described manthanoate is one or more the mixture in methyl-formiate, ethyl formate, propyl formate, butyl formate, pentyl formate.
Preferably, the carbochain of described butyl formate and pentyl formate can be both straight chain, also can comprise side chain.
Preferably, described tensio-active agent is anion surfactant or nonionogenic tenside.
Preferably, described anion surfactant is sodium lauryl sulphate or Sodium dodecylbenzene sulfonate; Described nonionogenic tenside is alkylphenol polyoxyethylene or fatty alcohol-polyoxyethylene ether.
Preferably, described thickening material is hydroxyethyl propyl cellulose or ethyl cellulose or methylcellulose gum.
A kind of preparation method for the preparation of above-mentioned paint remover, it is characterized in that, main solvent is added in stirring tank, then add thickening material and tensio-active agent, then start and stir and be uniformly dissolved, then add water to stir, then add successively benzyl chloride (selectable components, can not add when removing baking vanish), manthanoate and inhibiter, stop discharging packing after continuing to be stirred to uniformly emulsify thickness state.
In sum, paint remover provided by the invention, in effective, various paint films of fast eliminating, has following beneficial effect:
1, do not contain formic acid common in existing paint remover, phosphoric acid, ammoniacal liquor etc. to base material, human body, environment unwanted component.
2, do not contain the meetings such as paraffin, kerosene and paint film again application is caused to the component of obstruction.
3, by adding selectable components benzyl chloride, not only can remove common various paint film, can also remove common paint remover and be difficult to the baking vanish paint film of removing.
Embodiment
In order to make those skilled in the art person understand better technical scheme of the present invention, below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1
Unit is weight percentage
25kg phenylcarbinol is joined in the stirring tank of 200L, then add 4kg hydroxyethyl propyl cellulose and 5kg alkylphenol polyoxyethylene, start and stir and be uniformly dissolved, then add 38kg water to stir.Finally add 28kg methyl-formiate, stir into uniformly emulsify thickness state, stop stirring, discharging packing.
According to national standard HG/T2881-1997 < < paint remover depainting efficiency test method > >, measure the depainting efficiency (being that in the specified time, paint film expands and wrinkling area percent) that paint remover is provided in embodiment 1, result is as follows:
| Paint vehicle | Time | Depainting efficiency |
| Acrylic paint | 5 | 98.2% |
| Epoxy-based lacquers | 10 | 98.1% |
| Polyurethane paint | 8 | 98.5% |
| Fluorine carbon paint | 10 | 97.8% |
| Baking vanish | 12 | 82.0% |
Embodiment 2
Unit is weight percentage.
25kg phenylcarbinol and 25kg methylene dichloride are joined in the stirring tank of 200L, then add 1kg ethyl cellulose and 1kg fatty alcohol-polyoxyethylene ether, start and stir and be uniformly dissolved, then add 40kg water to stir.Finally add 8kg butyl formate, stir into uniformly emulsify thickness state, stop stirring, discharging packing.
According to national standard HG/T2881-1997 < < paint remover depainting efficiency test method > >, measure the depainting efficiency (being that in the specified time, paint film expands and wrinkling area percent) that paint remover is provided in embodiment 1, result is as follows:
| Paint vehicle | Time | Depainting efficiency |
| Acrylic paint | 5 | 97.4% |
| Epoxy-based lacquers | 10 | 98.0% |
| Polyurethane paint | 8 | 98.5% |
| Fluorine carbon paint | 10 | 97.8% |
| Baking vanish | 12 | 79.3% |
Embodiment 3
Unit is weight percentage.
30kg phenylcarbinol and 35kg methylene dichloride are joined in the stirring tank of 200L, then add 4kg hydroxyethyl propyl cellulose and 4kg Sodium dodecylbenzene sulfonate, start and stir and be uniformly dissolved, then add 11kg water to stir.Finally add 16kg ethyl formate, stir into uniformly emulsify thickness state, stop stirring, discharging packing.
According to national standard HG/T2881-1997 < < paint remover depainting efficiency test method > >, measure the depainting efficiency (being that in the specified time, paint film expands and wrinkling area percent) that paint remover is provided in embodiment 1, result is as follows:
| Paint vehicle | Time | Depainting efficiency |
| Acrylic paint | 5 | 99.2% |
| Epoxy-based lacquers | 10 | 97.9% |
| Polyurethane paint | 8 | 98.1% |
| Fluorine carbon paint | 10 | 98.0% |
| Baking vanish | 12 | 78.4% |
Embodiment 4
Unit is weight percentage.
26kg phenylcarbinol is joined in the stirring tank of 200L, then add 1kg Vltra tears and 1.5kg alkylphenol polyoxyethylene, start and stir and be uniformly dissolved, then add 24.5kg water to stir.Add successively 15kg benzyl chloride, 28kg ethyl formate and 4kg inhibiter etc., stir into uniformly emulsify thickness state, stops stirring discharging packing.
According to national standard HG/T2881-1997 < < paint remover depainting efficiency test method > >, measure the depainting efficiency (being that in the specified time, paint film expands and wrinkling area percent) that paint remover is provided in embodiment 1, result is as follows:
| Paint vehicle | Time | Depainting efficiency |
| Acrylic paint | 5 | 98.5% |
| Epoxy-based lacquers | 10 | 98.5% |
| Polyurethane paint | 8 | 99.0% |
| Fluorine carbon paint | 10 | 98.4% |
| Baking vanish | 12 | 98..2% |
Embodiment 5
Unit is weight percentage.
30kg phenylcarbinol and 35kg methylene dichloride are joined in the stirring tank of 200L, then add 3kg Vltra tears and 3kg sodium lauryl sulphate, start and stir and be uniformly dissolved, then add 5.5kg water to stir.Add successively 9kg benzyl chloride, 12kg ethyl formate and 2.5kg inhibiter etc., stir into uniformly emulsify thickness state, stops stirring discharging packing.
According to national standard HG/T2881-1997 < < paint remover depainting efficiency test method > >, measure the depainting efficiency (being that in the specified time, paint film expands and wrinkling area percent) that paint remover is provided in embodiment 1, result is as follows:
| Paint vehicle | Time | Depainting efficiency |
| Acrylic paint | 5 | 98.5% |
| Epoxy-based lacquers | 10 | 98.6% |
| Polyurethane paint | 8 | 98.7% |
| Fluorine carbon paint | 10 | 98.6% |
| Baking vanish | 12 | 98..0% |
Embodiment 6
Unit is weight percentage.
47.9kg phenylcarbinol is joined in the stirring tank of 200L, then add 0.5kg Vltra tears and 1.5kg alkylphenol polyoxyethylene, start and stir and be uniformly dissolved, then add 39kg water to stir.Add successively 3.0kg benzyl chloride, 8.0kg ethyl formate and 0.1kg inhibiter etc., stir into uniformly emulsify thickness state, stops stirring discharging packing.
According to national standard HG/T2881-1997 < < paint remover depainting efficiency test method > >, measure the depainting efficiency (being that in the specified time, paint film expands and wrinkling area percent) that paint remover is provided in embodiment 1, result is as follows:
| Paint vehicle | Time | Depainting efficiency |
| Acrylic paint | 5 | 98.6% |
| Epoxy-based lacquers | 10 | 98.4% |
| Polyurethane paint | 8 | 98.3% |
| Fluorine carbon paint | 10 | 98.4% |
| Baking vanish | 12 | 98.5% |
Embodiment 7
Unit is weight percentage.
40kg methylene dichloride is joined in the stirring tank of 200L, then add 0.5kg Vltra tears and 2.5kg alkylphenol polyoxyethylene, start and stir and be uniformly dissolved, then add 33.9kg water to stir.Add successively 3.0kg benzyl chloride, 20kg propyl formate and 0.1kg inhibiter etc., stir into uniformly emulsify thickness state, stops stirring discharging packing.
According to national standard HG/T2881-1997 < < paint remover depainting efficiency test method > >, measure the depainting efficiency (being that in the specified time, paint film expands and wrinkling area percent) that paint remover is provided in embodiment 1, result is as follows:
| Paint vehicle | Time | Depainting efficiency |
| Acrylic paint | 5 | 99.5% |
| Epoxy-based lacquers | 10 | 99.3% |
| Polyurethane paint | 8 | 99.3% |
| Fluorine carbon paint | 10 | 99.4% |
| Baking vanish | 12 | 99.0% |
Embodiment 8
Unit is weight percentage.
20kg phenylcarbinol and 25kg methylene dichloride are joined in the stirring tank of 200L, then add 0.5kg Vltra tears and 2kg alkylphenol polyoxyethylene, start and stir and be uniformly dissolved, then add 32.4kg water to stir.Add successively 5kg benzyl chloride, 15kg ethyl formate and 0.1kg inhibiter etc., stir into uniformly emulsify thickness state, stops stirring discharging packing.
According to national standard HG/T2881-1997 < < paint remover depainting efficiency test method > >, measure the depainting efficiency (being that in the specified time, paint film expands and wrinkling area percent) that paint remover is provided in embodiment 1, result is as follows:
| Paint vehicle | Time | Depainting efficiency |
| Acrylic paint | 5 | 99.6% |
| Epoxy-based lacquers | 10 | 99.2% |
| Polyurethane paint | 8 | 99.8% |
| Fluorine carbon paint | 10 | 99.3% |
| Baking vanish | 12 | 99.2% |
In addition, through test, the equal corrosion-free phenomenon of the base material of each paint vehicle in embodiment 1-8.
By embodiment 1-8, can find, do not add benzyl chloride time (embodiment 1-3), paint remover provided by the invention can effectively be removed various common paint films, but it is undesirable that baking vanish paint film is removed to effect, after adding benzyl chloride (embodiment 4-8), paint remover also can reach the effect of quick removing to baking vanish.
Above paint remover provided by the present invention and preparation method thereof is described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand core concept of the present invention.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention.These improvement and modification and the so-called novel compositions that obtains thereof also should fall in the protection domain of the claims in the present invention.
Claims (10)
1. a paint remover, is characterized in that, comprises the component of following weight percentage: main solvent 20～70%, manthanoate 5～30%, tensio-active agent 0.5～5%, thickening material 0.5～5% and water 5～40%.
2. paint remover according to claim 1, is characterized in that, comprises the component of following weight percentage: main solvent 20～70%, benzyl chloride 0.1～20%, manthanoate 5～30%, tensio-active agent 0.5～5%, thickening material 0.5～5%, inhibiter 0.1～5% and water 5～40%.
3. paint remover according to claim 2, is characterized in that, in described paint remover, the weight percentage of each component is: main solvent 40～60%, benzyl chloride 0.1～10%, manthanoate 8～25%, tensio-active agent 1～3%, thickening material 0.5～3%, inhibiter 0.1～2% and water 10～35%.
4. according to the arbitrary described paint remover of claim 1-3, it is characterized in that, described main solvent is the mixture of phenylcarbinol or dichloro-alkane or phenylcarbinol and dichloro-alkane.
5. according to the arbitrary described paint remover of claim 1-3, it is characterized in that, described manthanoate is one or more the mixture in methyl-formiate, ethyl formate, propyl formate, butyl formate, pentyl formate.
6. paint remover according to claim 5, is characterized in that, the carbochain of described butyl formate and pentyl formate can be both straight chain, also can comprise side chain.
7. according to the arbitrary described paint remover of claim 1-3, it is characterized in that, described tensio-active agent is anion surfactant or nonionogenic tenside.
8. paint remover according to claim 7, is characterized in that, described anion surfactant is sodium lauryl sulphate or Sodium dodecylbenzene sulfonate; Described nonionogenic tenside is alkylphenol polyoxyethylene or fatty alcohol-polyoxyethylene ether.
9. according to the arbitrary described paint remover of claim 1-3, it is characterized in that, described thickening material is hydroxyethyl propyl cellulose or ethyl cellulose or methylcellulose gum.
10. the preparation method for the preparation of the arbitrary described paint remover of claim 1-3, it is characterized in that, main solvent is added in stirring tank, then add thickening material and tensio-active agent, start and stir and be uniformly dissolved, then add water to stir, then add successively benzyl chloride (optional), manthanoate and inhibiter, after continuing to be stirred to uniformly emulsify thickness state, stop discharging packing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106752288A (en) * | 2016-12-08 | 2017-05-31 | 马鞍山拓锐金属表面技术有限公司 | A kind of environmentally friendly watery paint remover of anti-corrosion and preparation method thereof |
| CN107075281A (en) * | 2014-08-19 | 2017-08-18 | 吉欧科技聚合物有限责任公司 | Diester peels off component |
| CN107760092A (en) * | 2017-11-20 | 2018-03-06 | 广东三和化工科技有限公司 | A kind of preparation method of aerial fog type without wax paint stripper |
| CN110845905A (en) * | 2019-12-23 | 2020-02-28 | 嘉纳尔科技（北京）有限公司 | Paint remover and production method thereof |
| CN115354335A (en) * | 2022-09-14 | 2022-11-18 | 中亿丰罗普斯金材料科技股份有限公司 | Waste aluminum depainting process and equipment thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110845905A (en) * | 2019-12-23 | 2020-02-28 | 嘉纳尔科技（北京）有限公司 | Paint remover and production method thereof |
| CN115354335A (en) * | 2022-09-14 | 2022-11-18 | 中亿丰罗普斯金材料科技股份有限公司 | Waste aluminum depainting process and equipment thereof |
| CN115354335B (en) * | 2022-09-14 | 2024-02-23 | 中亿丰罗普斯金材料科技股份有限公司 | Waste aluminum paint removal process and equipment thereof |
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