CN100516151C - Basic paint remover and preparation method thereof - Google Patents
Basic paint remover and preparation method thereof Download PDFInfo
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- CN100516151C CN100516151C CNB2006100482781A CN200610048278A CN100516151C CN 100516151 C CN100516151 C CN 100516151C CN B2006100482781 A CNB2006100482781 A CN B2006100482781A CN 200610048278 A CN200610048278 A CN 200610048278A CN 100516151 C CN100516151 C CN 100516151C
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- paint remover
- basic paint
- depainting
- potassium hydroxide
- remover
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Abstract
The invention discloses an alkaline paint remover, which comprises the following parts: 64-96% benzene substituted alkylol, 3.1-31% potassium hydroxide, 0.1-5% surface activator and 0.01-0.1% erosion-proof agent.
Description
Technical field
This invention relates to a kind of paint remover, specifically belong to a kind of basic paint remover, especially belong to the basic paint remover that contains high reactivity stopping agent nitrobenzene disulphide or mercaptoquinoline compounds, this paint remover can be used for removing the enamelled coating on electronic product casing surfaces such as computer, mobile phone.
Background technology
Often needing that before household electrical appliances or equipment unit are painted again used paint layer is carried out depainting handles.Taking off of used paint layer removes and need propose corresponding requirement to the universality that paint remover removes various paint films by different requirements, different base materials, different coatings.
Paint remover commonly used at present has two big classes: comprise inorganic and organic paint remover.
Inorganic paint remover great majority are based on sodium hydroxide, and cost is lower and use saferly, but shortcoming is that the depainting time is longer, and metallic matrix is had the intensive corrosive nature.
Traditional organic paint remover mainly is a methylene dichloride type paint remover.To corrode little depainting very fast though such paint remover is compared with inorganic paint remover, and toxicity is big, and is volatile.And because both at home and abroad to the improving constantly of environmental protection requirement, traditional methylene dichloride type paint remover will be used by the strictness restriction, so make them to be replaced by the paint remover of low toxicity, low volatility.And the existing lot of documents report of work in this respect.Developed a kind of efficient no benzene paint remover of emulsion-type as Liu Fang etc., the depainting performance is suitable with methylene dichloride type paint remover, but environmental pollution and toxicity all descend to some extent.Japanese Patent JP:2001131448 has also proposed following a kind of low-toxic paint remover, and the solvent of this paint remover has the solvency power of wide range, and has higher efficient.
But just correlative study analysis at present, this series products has the following disadvantages: or the depainting activity is lower; Or the corrosion to matrix is comparatively serious behind the depainting.Disclose a kind of basic paint remover as Chinese patent CN 1775871A, its depainting time needs 24 minutes at least in the time of 90 ℃, and the depainting time was up to 90 minutes in the time of 70 ℃; As Zhao Zhaojun etc. at [J] material protection; 1999,32 (12), 22-23 " depainting technology and application aborning thereof ". hot alkaline solution paint remover of mentioning in the literary composition and acid paint remover; though such inorganic paint remover environmental pollution is little and depainting is fast, and is quite serious to the corrosion of matrix.
So the difficult evaporable of research and development low toxicity, the fast paint remover of the little depainting of corrosion will become the development trend in this field.
Summary of the invention
The object of the present invention is to provide a kind of high reactivity alkalescence paint remover and preparation method thereof.This paint remover has overcome the severe corrosive and the long shortcoming of depainting time of simple inorganic paint remover, should avoid also simultaneously that organic paint remover toxicity is big, high volatility, with serious pollution deficiency, realized low toxicity, the quick depainting of no burn into and eco-friendly requirement preferably.
A kind of basic paint remover provided by the invention, material component be by weight percentage: alkyl alcohol 64-96%, potassium hydroxide 3.1%-31%, tensio-active agent 0.1%-5%, stopping agent 0.01%-0.1% that phenyl replaces.
The alkyl alcohol that described phenyl replaces can be phenylcarbinol, p-hydroxyphenylethanol, phenylethyl alcohol etc., preferred phenylcarbinol.
Described stopping agent can be a nitrobenzene disulphide, as 2, and 2-two sulphur connection-5-nitrobenzoic acids, 5,5-two sulphur connection-2-nitrobenzoic acids, 4,4-two sulphur connection oil of mirbane, 2,2-two sulphur connection oil of mirbane etc., or the mercaptoquinoline compounds, as thiooxine, 2-mercaptoquinoline etc.More than two class stopping agents why can be anticorrosive, its mechanism of action is that they have close metallicity, can form the title complex protective membrane in the metallic surface.
Described tensio-active agent is the glycerin fatty acid ester of 5-12 carbon, as Glycerin, mixed triester with caprylic acid capric acid, capric acid Witepsol W-S 55, caproin etc.
The preparation method of paint remover: ratio in accordance with regulations adds potassium hydroxide in the alkyl alcohol of phenyl replacement, treats that potassium hydroxide dissolves the back fully and adds tensio-active agent and stopping agent, stirs, and promptly makes high reactivity alkalescence paint remover.
This paint remover can be used for removing the urethane of parts case surface, Resins, epoxy, Synolac enamelled coating.
The using method of paint remover: will treat that the depainting parts immerse in the paint remover solution, be under 70-90 ℃ the condition, to remove 8-30 minute and get final product in temperature.
Advantage compared with prior art of the present invention and effect: the present invention has weakened the corrosion to matrix greatly by adding stopping agent nitrobenzene disulphide or mercaptoquinoline compounds in the depainting process; And potassium hydroxide is significantly improved its depainting activity, removes 8-30 minute in 70-90 ℃ temperature range, and the depainting rate can reach 100%.
Description of drawings:
The reflection absorption spectrum figure of device surface behind Fig. 1 depainting
Among the figure: curve 0: do not add stopping agent, curve 1: add the stopping agent thiooxine, curve 2: add stopping agent 2,2-two sulphur connection-5-nitrobenzoic acids.
Embodiment
Embodiment 1:
3.56 gram potassium hydroxide are added in the phenylcarbinols of 95.45 grams, treat that potassium hydroxide dissolves fully after, add 0.868 gram Glycerin, mixed triester with caprylic acid capric acid and 0.027 gram thiooxine, stir paint remover solution.Under 80 ℃ of conditions, will treat that the depainting device is dipped in fully carries out depainting and handled 10 minutes in this solution, and decreasing ratio can 100%.
Embodiment 2:
3.62 gram potassium hydroxide are added in the phenylcarbinols of 94.6 grams, treat that potassium hydroxide dissolves fully after, add 1.72 gram Glycerin, mixed triester with caprylic acid capric acid and 0.054 gram 2,2-two sulphur connection-5-nitrobenzoic acids, stir paint remover solution.Under 82 ℃ of conditions, will treat that the depainting device is dipped in fully carries out depainting and handled 9 minutes in this solution, and decreasing ratio reaches 100%.
Embodiment 3:
3.62 gram potassium hydroxide are added in the phenylcarbinols of 94.6 grams, treat that potassium hydroxide dissolves fully after, add 1.72 gram capric acid Witepsol W-S 55s and 0.054 gram 2,2-two sulphur connection-5-nitrobenzoic acids, stir paint remover solution.Under 75 ℃ of conditions, will treat that the depainting device is dipped in fully carries out depainting and handled 12 minutes in this solution, and decreasing ratio reaches 100%.
Test-results shows: the depainting activity of above three embodiment is higher.
The test and evaluation of the antiseptic property of embodiment 4 paint removers of the present invention
Adding and do not adding under two kinds of situations of stopping agent respectively,, investigating the antiseptic property of paint remover of the present invention by the reflection absorption spectrum of device surface behind the drafting depainting.More serious as corrosion, device surface is more coarse behind the depainting, and its scattering of light is strong more, and its absorbance A is just big more so; Otherwise A is more little for absorbance.Experimental result is seen Fig. 1.(ordinate zou is the absorbance A value among the figure, and X-coordinate is the wavelength X value) when this embodiment presentation of results had stopping agent to exist, the device surface behind the depainting was relatively brighter and smooth, and then illustrates that this invention paint remover has stronger antiseptic property.
Claims (7)
1, a kind of basic paint remover, component be by weight percentage: alkyl alcohol 64-96%, potassium hydroxide 3.1%-31%, tensio-active agent 0.1%-5%, stopping agent 0.01%-0.1% that phenyl replaces.
2,, it is characterized in that the alkyl alcohol that described phenyl replaces is a phenylcarbinol according to the described a kind of basic paint remover of claim 1.
3,, it is characterized in that described stopping agent is a nitrobenzene disulphide according to the described a kind of basic paint remover of claim 1.
4,, it is characterized in that described stopping agent is the mercaptoquinoline compounds according to the described a kind of basic paint remover of claim 1.
5,, it is characterized in that described tensio-active agent is the glycerin fatty acid ester of 5-12 carbon according to the described a kind of basic paint remover of claim 1.
6, according to the preparation method of the described basic paint remover of claim 1, it is characterized in that comprising the steps: that ratio in accordance with regulations adds potassium hydroxide in the alkyl alcohol of phenyl replacement, treat that potassium hydroxide dissolves the back fully and adds tensio-active agent and stopping agent, stir, promptly make high reactivity alkalescence paint remover.
7,, it is characterized in that being used for removing to urethane, Resins, epoxy, Synolac enamelled coating according to the purposes of the described a kind of basic paint remover of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100482781A CN100516151C (en) | 2006-09-12 | 2006-09-12 | Basic paint remover and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100482781A CN100516151C (en) | 2006-09-12 | 2006-09-12 | Basic paint remover and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1919939A CN1919939A (en) | 2007-02-28 |
| CN100516151C true CN100516151C (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100482781A Expired - Fee Related CN100516151C (en) | 2006-09-12 | 2006-09-12 | Basic paint remover and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN100516151C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101747677B (en) * | 2010-01-19 | 2011-08-17 | 安徽江南机械有限责任公司 | Water-based paint remover as well as preparation method and using method thereof |
| CN102585582B (en) * | 2012-02-24 | 2013-08-14 | 北京泰合源通生物科技有限公司 | Solution and method for stripping protective adhesive layer and printing layer of optical disc |
| CN103396696A (en) * | 2013-07-24 | 2013-11-20 | 张运泉 | Biodegradable environmentally-friendly paint remover |
| CN106280674A (en) * | 2016-08-23 | 2017-01-04 | 启东市欣德龙制衣有限公司 | A kind of alkali paint remover |
| CN106497213A (en) * | 2016-12-20 | 2017-03-15 | 粟飞 | A kind of alkali paint remover |
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2006
- 2006-09-12 CN CNB2006100482781A patent/CN100516151C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1919939A (en) | 2007-02-28 |
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Granted publication date: 20090722 Termination date: 20120912 |