CN103937322A - Anhydrous paint remover composition - Google Patents
Anhydrous paint remover composition Download PDFInfo
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- CN103937322A CN103937322A CN201410165288.8A CN201410165288A CN103937322A CN 103937322 A CN103937322 A CN 103937322A CN 201410165288 A CN201410165288 A CN 201410165288A CN 103937322 A CN103937322 A CN 103937322A
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- paint
- remover composition
- anhydrous
- promotor
- inhibiter
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Abstract
The invention provides an anhydrous paint remover composition. The anhydrous paint remover composition is characterized by comprising the following components in parts by weight: 45-65% of a main solvent, 25%-40% of a multi-component mixed co-solvent, 6%-12% of an organic alkaline accelerator, 1%-5% of TX series emulsifiers and 1%-2% of a corrosion inhibitor. The anhydrous paint remover composition has a capability of deactivating the binding force, the adhesion force and the solvent resistance of the paint at room temperature and has no corrosion to aluminum alloy, is applicable to the removal of the ordinary paint, epoxy paint, nitrolacquer, phenolic resin paint and polyurethane paint and the like and particularly for removing the epoxy paint layer from the surface of the aluminum alloy parts.
Description
Technical field
The present invention relates to a kind of anhydrous paint-remover composition
,there is low toxicity, low volatilization, weakly alkaline feature, can promptly remove all kinds of enamelled coatings such as common paint, epoxy-based lacquers, pyroxylin(e)finish, phenolic resin coating and polyurethanes paint, be particularly useful for the removal of the epoxies enamelled coating on aluminum alloy part surface.
Background technology
In use, paint film aging and damage gradually, in industries such as Aeronautics and Astronautics, electronics, machineries, for attractive in appearance and security needs, all needs regularly outmoded or damaged coating to be removed, and then re-starts application coating.
At present, on the one hand along with coatings industry great development, the chemical resistance of various paint, coating progressively improves, paint and the work difficulty that removes of coating are strengthened, using on the other hand flame method, blast method and striking the mechanical means such as shovel method wastes time and energy, is difficult to reach height and remove quality except outmoded enamelled coating, easily cause component surface damage, especially some precision pairs, are generally not allow to remove by the mechanical means, the combustion method that easily cause component surface damage simultaneously.And it is very convenient to adopt paint remover to carry out the chemical method of depainting, there is efficient, easy function.
Because aluminum alloy part material is softer, resistance to acids and bases is poor, uses mechanical means or general soda acid paint remover easily to cause substrate material surface damage or serious corrosion.Adopt one not containing chloro methane series compound (as methylene dichloride, trichloroethane etc.), there is low toxicity, low volatilization, weakly alkaline anhydrous paint remover, can promptly remove coat system in aluminum alloy surface (as common paint, epoxy-based lacquers, pyroxylin(e)finish, phenolic resin coating and polyurethanes paint etc.), especially be applicable to removing aircraft engine aluminum nose cone epoxies coat system used.
Summary of the invention
The invention provides a kind of anhydrous paint-remover composition
,the not moisture and alkyl chloride based compound (as methylene dichloride, trichloroethane etc.) of said composition, there is low toxicity, low volatilization, weakly alkaline feature, can remove rapidly enamelled coating (as enamelled coatings such as common paint, epoxy-based lacquers, pyroxylin(e)finish, phenolic resin coating and polyurethanes paint), be particularly useful for the removal of the epoxies enamelled coating on aluminum alloy part surface.
Above-mentioned purpose of the present invention is to realize like this, the anhydrous paint-remover composition that the present invention proposes, by weight percentage, formed by following component: main solvent 45%～65%, solubility promoter 28%～40%, organic bases promotor 6%～14%, TX series emulsifying agent 1%～5%, inhibiter 1%～2%, described main solvent is N-Methyl pyrrolidone or hexone, described solubility promoter is by methyl alcohol, ethanol, butanols, Virahol, ethylene glycol ethyl ether, pimelinketone, more than one component composition mixtures in X-1 thinner for nitrocellulose finishes, organic bases promotor is carbinolamine or thanomin, TX series emulsifying agent is the one in TX-8 ~ 12, inhibiter is methyl-triazole, thiazole, imidazoles, one in benzotriazole.
In the present invention, adopt N-Methyl pyrrolidone or hexone as main solvent, the ability that its molecule infiltration enters polymer segment gap is stronger, therefore after entering polymer segment gap, N-Methyl pyrrolidone or hexone molecule infiltration just make superpolymer swelling, the volume of paint film is constantly increased, the high molecular volume of paint film increases the internal stress producing, and can weaken and finally destroy the sticking power of paint film to ground.Make paint film from point-like is swelling, develop into sheet swelling, paint film is pursed up in flakes, thoroughly destroy the sticking power of paint film to ground, paint film has been stung and removed, overcome that prior art contains chloroparaffin series main solvent, volatility is high, toxicity is large, the shortcoming larger to the hazardness of environment and personnel safety; It is C that the Chinese another name of N-Methyl pyrrolidone is again NMP, METHYLPYRROLIDONE or 1-Methyl-2-Pyrrolidone, English name N-Methy12-pyrrolidinone, molecular formula
5h
9nO, for not containing the low poison solvent of methylene dichloride, its molecular weight is little, and penetrating power is strong, can make the quick swelling of paint film, and its volatility is much lower compared with methylene dichloride, and can not cause corrosion to metallic substance; Hexone, molecular formula is CH
3cOCH
2cH (CH
3)
2, its Main Function is that soluble cotton, synthetic resins, paint are risen and dissolved or swelling action; N-Methyl pyrrolidone or hexone preferred content are 45%～60%.
In the present invention, solubility promoter is made up of more than one components in methyl alcohol, ethanol, butanols, Virahol, ethylene glycol ethyl ether, pimelinketone, X-1 thinner for nitrocellulose finishes.Due to adding of solubility promoter, binary azeotrope that can be lower with main solvent molecule formation temperature, be conducive to again the dissolving of fiber simultaneously, play the effect of latent solvent, collaborative main solvent fully infiltrates glued membrane, accelerate paint stripping rate, co-solvent can also obtain good viscosity stability, and its preferred amounts is 28%～40%.
In the present invention, add nucleophilic solvent as promotor, with the macromolecular chain that accelerates the failure, strengthen the infiltration of main solvent to enamelled coating and swelling, play the effect of accelerating depainting, conventionally promotor can be selected organic acid or organic bases, can promote the corrosion of paint remover to metallic substance because organic acid adds, so the present invention selects organic bases as promotor, machine bases promotor has thanomin, carbinolamine etc., in the present invention, preferred alcohol amine is promotor, and its preferred content is 6%～14%.
In order to make coatingsurface better wetting, so that paint remover better immerses in paint film with solvent molecule, can in paint-remover composition, add appropriate emulsifying agent, emulsifying agent can be selected the one in Sodium dodecylbenzene sulfonate, alkylphenol polyoxyethylene, tween, TX series emulsifying agent or peregal, TX series emulsifying agent can impel solution to form stable goods and materials, can reduce the surface tension of disperse phase, and good penetrability, boiling point is higher, it is not moisture etc., preferred TX-8 ~ the TX-12 of this paint remover emulsifying agent, its preferred content is 1%～5%.
Inhibiter can obviously reduce the corrosion of paint remover to metal material matrix, and in paint remover of the present invention, inhibiter can be selected the one of methyl-triazole, thiazole, imidazoles, benzotriazole, preferably benzotriazole, and its preferred amounts is 1%～2%.
Provided by the inventionly remove agent and compared with prior art have the following advantages: 1. particularly aluminium alloy is corrosion-free to metallic substance for this degumming agent, and aluminium alloy test piece is immersed in to 24h in degumming agent, and metal appearance, weight are substantially unchanged, do not affect the intensity of metal; 2. paint stripping rate is fast, and this degumming agent can make in 30 min on articles made of aluminium alloy that coating is wrinkling to be peeled off; 3. safe construction is high: this degumming agent is not containing noxious solvents such as phenols, benzene class, alkyl chloride hydro carbons, and toxicity is little, and volatilization is slow; 4. this degumming agent has no irritating odor, and workmen is easy to accept.
Provided by the inventionly remove the removal that agent can be used for enamelled coating in the aluminum alloy surface such as aircraft, automobile, household electrical appliances (as common paint, epoxy-based lacquers, pyroxylin(e)finish, phenolic resin coating and polyurethanes paint etc.), be also applicable to the processing that removes of articles made of aluminium alloy surface, the field enamelled coatings such as Aeronautics and Astronautics, electronics, machinery.
specific embodiment mode
Below in conjunction with embodiment, this outbreak is further illustrated, but following embodiment is not used in restriction practical range of the present invention.Can be according to the present invention anhydrous paint remover by 45%～65% main solvent, 28%～40% solubility promoter, 6%～14% organic bases promotor, 1%～5% TX series emulsifying agent, any one concrete numerical value in the weight percent content of 1%～2% inhibiter, at normal temperatures and pressures, press respectively each component of specifying in table 1 by main solvent, solubility promoter, organic bases promotor, emulsifying agent, inhibiter is poured into and in container, is mixed to form solution, in stirring at normal temperature to solution evenly and by this solution stirring 3 minutes～10 minutes, form uniform mixture, obtain paint-remover composition, testing performance index the results are shown in Table 1.
Formula composition and the removal effect of table 1 embodiment 1～5
Claims (4)
1. an anhydrous paint-remover composition, by weight percentage, is made up of following component: main solvent 45%～65%, solubility promoter 28%～40%, organic bases promotor 6%～14%, TX series emulsifying agent 1%～5%, inhibiter 1%～2%; Described main solvent is N-Methyl pyrrolidone or hexone; Described solubility promoter is made up of more than one components in methyl alcohol, ethanol, butanols, Virahol, ethylene glycol ethyl ether, pimelinketone, X-1 thinner for nitrocellulose finishes; Organic bases promotor is carbinolamine or thanomin; TX series emulsifying agent is the one in TX-8 ~ 12; Inhibiter is the one in methyl-triazole, thiazole, imidazoles, benzotriazole.
2. anhydrous paint-remover composition according to claim 1, is characterized in that described promotor is thanomin, and by weight percentage, its content is 6%～14%.
3. anhydrous paint-remover composition according to claim 1, is characterized in that described inhibiter is benzotriazole, and by weight percentage, its content is 1%～2%.
4. anhydrous paint-remover composition according to claim 1, for the removal of aluminum alloy part surface epoxies enamelled coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410165288.8A CN103937322A (en) | 2014-04-23 | 2014-04-23 | Anhydrous paint remover composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410165288.8A CN103937322A (en) | 2014-04-23 | 2014-04-23 | Anhydrous paint remover composition |
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| CN103937322A true CN103937322A (en) | 2014-07-23 |
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| CN201410165288.8A Pending CN103937322A (en) | 2014-04-23 | 2014-04-23 | Anhydrous paint remover composition |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106280677A (en) * | 2016-08-30 | 2017-01-04 | 中山市华光化工有限公司 | A kind of paint stripper and preparation method thereof |
| WO2019006670A1 (en) * | 2017-07-04 | 2019-01-10 | 深圳市长宏泰科技有限公司 | Solvent-based paint remover, and method thereof for removing paint of workpiece |
| CN109694606A (en) * | 2017-10-20 | 2019-04-30 | 中蓝晨光化工研究设计院有限公司 | A kind of environmental protection paint remover and preparation method thereof |
| CN110128870A (en) * | 2019-04-30 | 2019-08-16 | 深圳市威富通讯技术有限公司 | Paint removing composition and preparation method thereof |
| 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 |
| CN114525053A (en) * | 2021-12-31 | 2022-05-24 | 博罗县东明化工有限公司 | Settling type paint and degumming agent and paint and degumming treatment process |
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| CN1944547A (en) * | 2006-10-11 | 2007-04-11 | 中国化工建设总公司常州涂料化工研究院 | Paint remover and its preparing method and using method |
| JP2007204768A (en) * | 2007-05-21 | 2007-08-16 | Public Works Research Institute | Corrosion-resistant/highly durable coating remover for structural steelwork |
| CN102888141A (en) * | 2012-09-24 | 2013-01-23 | 中国人民解放军第五七一九工厂 | Paint remover for removing epoxy primer and polyurethane finish coating |
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2014
- 2014-04-23 CN CN201410165288.8A patent/CN103937322A/en active Pending
Patent Citations (3)
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| CN1944547A (en) * | 2006-10-11 | 2007-04-11 | 中国化工建设总公司常州涂料化工研究院 | Paint remover and its preparing method and using method |
| JP2007204768A (en) * | 2007-05-21 | 2007-08-16 | Public Works Research Institute | Corrosion-resistant/highly durable coating remover for structural steelwork |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106280677A (en) * | 2016-08-30 | 2017-01-04 | 中山市华光化工有限公司 | A kind of paint stripper and preparation method thereof |
| WO2019006670A1 (en) * | 2017-07-04 | 2019-01-10 | 深圳市长宏泰科技有限公司 | Solvent-based paint remover, and method thereof for removing paint of workpiece |
| CN109694606A (en) * | 2017-10-20 | 2019-04-30 | 中蓝晨光化工研究设计院有限公司 | A kind of environmental protection paint remover and preparation method thereof |
| CN110128870A (en) * | 2019-04-30 | 2019-08-16 | 深圳市威富通讯技术有限公司 | Paint removing composition and preparation method thereof |
| CN110128870B (en) * | 2019-04-30 | 2022-02-22 | 深圳市威富通讯技术有限公司 | Paint removing composition and preparation method thereof |
| 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 |
| CN114525053A (en) * | 2021-12-31 | 2022-05-24 | 博罗县东明化工有限公司 | Settling type paint and degumming agent and paint and degumming treatment process |
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Application publication date: 20140723 |