CN100453606C - Paint remover and its preparing method and using method - Google Patents
Paint remover and its preparing method and using method Download PDFInfo
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- CN100453606C CN100453606C CNB2006100966084A CN200610096608A CN100453606C CN 100453606 C CN100453606 C CN 100453606C CN B2006100966084 A CNB2006100966084 A CN B2006100966084A CN 200610096608 A CN200610096608 A CN 200610096608A CN 100453606 C CN100453606 C CN 100453606C
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- paint remover
- paint
- depainting
- remover
- oils
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Abstract
The present invention relates to one kind of paint remover and its preparation process and usage. The paint remover consists of organic base 30-55 wt %, organic solvent 40-65wt %, and corrosion inhibitor 0.5-7wt %, and during storage and use, its surface is covered with oil sealer. The organic base is alcohol amine with boiling point not lower than 160deg.c and molecular weight smaller than 200; the organic solvent has point not lower than 200deg.c; the corrosion inhibitor is saccharide; and the oil sealer is vegetable oil or mineral oil with density lower than the paint remover and insoluble in the paint remover. The paint remover has simple preparation process, convenient use and environment friendship, and may be used to remove several kinds of paint film in high speed and no corrosion to most of the substrate.
Description
Technical field
The present invention relates to a kind of paint remover and preparation method thereof and using method, be specially adapted to remove the top coat of large and complex structure workpiece and sensitive metal ground.
Background technology
At present, use comparatively general paint remover, have following several substantially:
1. basic paint remover: the aqueous solution paint remover of forming with basic cpd such as sodium hydroxide, yellow soda ash etc.; 2. acid paint remover: with the aqueous solution paint remover of compositions such as strong acid such as the vitriol oil, nitric acid; 3. usual vehicle type paint remover: with ordinary organic solvents such as ketone, ester class, alcohols, benzene class paint remover that form and that be added with paraffin; 4. chlorinated hydrocarbon solvent type paint remover: based on the solvent stripper of methylene dichloride, chlorobenzene etc. and added other subsidiary material, this type of paint remover roughly can be divided into neutrality, acidity, alkaline three classes again.Because environmental requirement is strict day by day, though basic paint remover and acid paint remover cost of material are low, the corrodibility of highly basic and strong acid not only has infringement to ground, human body and operating environment is made also become detrimentally affect.Though usual vehicle type paint remover reduces the corrodibility of ground, solvent is conspicuous to the harm of human body and environment; Chlorinated hydrocarbon solvent type paint remover obtains wide model and uses, and is because construction is convenient, and the speed of depainting is also than comparatively fast, but methylene dichloride as the paint remover main body, high volatility to workmen, all very big to the infringement of environment, does not meet the environmental requirement of increasingly stringent yet.
Summary of the invention
First purpose of the present invention is: a kind of paint remover is provided, can remove multiple paint paint film, paint stripping rate fast, wide variety of substrates is not had the depainting that burn into is suitable for large complicated workpiece and responsive ground.
Second purpose of the present invention is: a kind of method for preparing above-mentioned paint remover is provided, and easy handling and method are simple.
The 3rd purpose of the present invention is: a kind of method of using above-mentioned paint remover be provided, reduce to operator with to the influence of environment, and easy to use.
The technical scheme that realizes first purpose of the present invention is: a kind of paint remover, form by organic bases 30～55wt%, organic solvent 40～65wt%, inhibiter 0.5～7wt%; Described organic bases is at least 160 ℃ of boiling points, and molecular weight is less than 200 hydramine; At least 200 ℃ of the boiling points of described organic solvent; Described inhibiter is a glucide.
In the above-mentioned paint remover, be one or more mixture of Monoethanolamine MEA BASF, diethanolamine, ethyldiethanolamine, butyl diethanolamine, trolamine as the hydramine of described organic bases.
In the above-mentioned paint remover, described organic solvent is one or more a mixture of phenylcarbinol, methylbenzyl alcohol, isophorone, N-Methyl pyrrolidone, N-ethyl pyrrolidone, ethylene glycol phenyl ether.
In the above-mentioned paint remover, described inhibiter is erythritol, Xylitol, sorbyl alcohol, maltose alcohol, N.F,USP MANNITOL, Saccharum lactis, glucose, inositol, sucrose, maltose, tragacanth gum, gum arabic, agar, one or more mixture of smart, gelatin recklessly.
The technical scheme that realizes second purpose of the present invention is: a kind of method for preparing above-mentioned paint remover, at first, under 50 ℃～100 ℃ stirrings, form the solution of homogeneous, add organic bases behind the cool to room temperature then organic solvent and inhibiter, after stirring, filter and be finished product; Barrelling covers one deck oils encapsulant more thereon, seals; The mixture of one or more that described oils encapsulant is vegetables oil or mineral oil, its density are lower than paint remover and almost insoluble or slightly soluble in paint remover.
The technical scheme that realizes the 3rd purpose of the present invention is: a kind of method of using above-mentioned paint remover, paint remover is put into the depainting groove that has heating unit, the workpiece that to treat depainting again is immersed in the paint remover fully, add the oils encapsulant then, the surface of paint remover in the depainting groove is covered fully, and depainting is carried out in heating; The mixture of one or more that described oils encapsulant is vegetables oil or mineral oil, its density are lower than paint remover and almost insoluble or slightly soluble in paint remover.
The method of above-mentioned use paint remover, described oils encapsulant, the height of the oils encapsulant layer that paint remover in depainting groove surface forms is equivalent to 1/5th to 1/4th of paint remover height in the depainting groove.
The method of above-mentioned use paint remover, the use temperature of described paint remover is at 80 ℃～110 ℃; The depainting time is within 4 hours.
The method of above-mentioned use paint remover between the usage period, can adopt direct addition method to replenish organic bases or organic solvent in paint remover according to the state of depainting, and the alkalescence of paint remover is adjusted.
Technique effect of the present invention: paint remover 1. of the present invention, its main body depainting material is an organic bases, because determined organic bases, its alkalescence is strong, molecular weight is little, perviousness is strong, and not only paint removing effect is good, and boiling point is higher, the oils sealing is arranged, thickening phenomenon in the time of just can not occurring as heating inorganic base aqueous solution paint remover during heating, therefore, the concentration of alkali can keep constant relatively in the paint remover; Since determined organic solvent boiling point than higher, solvency power is relatively good, both can play the effect of swelling paint film, quickening paint stripping rate with this solvent, can control the alkalescence of regulation system again by the dosage of solvent; Because paint remover of the present invention is solvent-borne type, can heat during depainting, therefore, have and can remove multiple paint paint film, the fast advantage of paint stripping rate; Determined inhibiter kind of the present invention and consumption can make paint remover that wide variety of substrates is had corrosion mitigating effect, have enlarged the Application Areas of paint remover.Practical application through the user shows, can remove baking-type epoxy-based lacquers, polyurethane paint and phenolic paint etc., also can remove the carbon and the carbide thereof that are deposited on piece surface, and during the depainting, sensitive metal grounds such as magnesium alloy, aluminium alloy, copper, soft steel, magnesium zinc zirconium alloy, titanium alloy there is not corrosion; Because paint remover of the present invention is between storage and usage period, all there is oils encapsulant tectum on its surface, and therefore, organic amine in the paint remover and organic solvent all can not cause damage compliance with environmental protection requirements to human and environment; 2. paint remover preparation method of the present invention is simple, need not specific installation, owing to when packing, be lower than paint remover and almost insoluble or solubleness oils encapsulant covering seldom in paint remover with density, therefore organic bases and the organic solvent in the constant and paint remover of the composition of paint remover can not discharged into the atmosphere yet between preservation period, so all harmless to human body and environment; 3. when using paint remover of the present invention, after the workpiece for the treatment of depainting is all by the paint remover submergence, with density be lower than paint remover, almost insoluble or sl. sol. oils encapsulant in paint remover, the paint remover surface is covered and controls tectal height fully, therefore, during the heating depainting, not only organic bases in the paint remover and organic solvent can not discharged into the atmosphere human body and environment are caused damage, and the composition of guaranteeing paint remover is constant relatively, can keep good paint removing effect, paint remover can thickening not occur because of heating yet; When needs replenish organic bases and organic solvent, as long as filling tube is extend into below the oils encapsulant tectum, just can directly feed in raw material, can not cause damage to human body and environment yet.
Embodiment
Below in conjunction with embodiment the present invention is further described in detail, but is not limited to this.
Employed raw material among the embodiment unless otherwise indicated, is the industrial goods that the commercial coating is used.
Paint remover of the present invention is made up of organic bases 30～55wt%, organic solvent 40～65wt%, inhibiter 0.5～7wt%; Described organic bases is at least 160 ℃ of boiling points, and molecular weight is less than 200 hydramine; At least 200 ℃ of the boiling points of described organic solvent; Described inhibiter is a glucide.
(1) remover recipe is listed in the table 1.
Table 1
| Material name (component) | Embodiment 1 g (wt%) | Embodiment 2 g (wt%) | Embodiment 3 g (wt%) | Embodiment 4 g (wt%) | Embodiment 5 g (wt%) |
| Monoethanolamine MEA BASF (organic amine) | 330(31.05) | 330(34.27) | 330(38.28) | - | - |
| Diethanolamine (organic amine) | - | - | - | 330(44.00) | - |
| Trolamine (organic amine) | - | - | - | - | 330(51.09) |
| Di-alcohol phenylate (organic solvent) | 364(34.24) | 303(31.46) | 242(28.06) | 181(24.10) | 121(18.73) |
| N-methylpyrrole alkanol (organic solvent) | 276(25.96) | 235(24.40) | 195(22.63) | 155(20.60) | 114(17.65) |
| Phenylcarbinol (organic solvent) | 50(4.70) | 50(5.19) | 50(5.80) | 50(6.65) | 50(7.74) |
| Sucrose (inhibiter) | 18(1.70) | 20(2.08) | 14(1.63) | 20(2.66) | 9(1.39) |
| Glucose (inhibiter) | 20(1.88) | - | 21(2.44) | - | 17(2.63) |
| Maltose alcohol (inhibiter) | - | 25(2.60) | 5(0.58) | 15(1.99) | - |
| Agar (inhibiter) | 5(0.47) | - | 5(0.58) | - | 5(0.77) |
Annotate: the numerical value in the table bracket is the content (by weight percentage) of this composition in paint remover
(2) preparation paint remover
Press the described prescription of table 1, at first with organic solvent and inhibiter, under 50 ℃～100 ℃ stirrings, form the solution of homogeneous, add organic bases behind the cool to room temperature then, after stirring, filtration, barrelling, cover one deck mineral oil (oils encapsulant) more thereon, seal, make the paint remover finished product of embodiment 1～5 respectively, the density of paint remover is 1.07g/ml.
(3) depainting
The paint remover that makes with embodiment 1 and embodiment 2 carries out depainting to the paint film of different substrate surface, and the paint removing effect of check paint remover and paint remover are to the influence of ground.
1, the paint remover that embodiment 1 is made is put into the depainting groove that has heating unit, the model (seeing Table 2) that to treat depainting again is immersed in the paint remover fully, add mineral oil (oils encapsulant) then, the surface of paint remover in the depainting groove is covered fully, the height of oils encapsulant layer, be equivalent to 1/5th of paint remover height in the depainting groove, carry out depainting at 100 ℃, concrete outcome sees Table 2.
Table 2
The result of table 2 can show that the paint film kind that paint remover was suitable for is many, and paint film removes totally, and is harmless to ground, the longest 90min of depainting time.
2, the paint remover that embodiment 2 is made is put into the depainting groove that has heating unit, the model that to treat depainting again is immersed in the paint remover fully, add mineral oil (oils encapsulant) then, the surface of paint remover in the depainting groove is covered fully, the height of oils encapsulant layer, be equivalent to 1/4th of paint remover height in the depainting groove, carry out depainting at 90 ℃, 3 hours depainting time.Used model ground is aluminium alloy, magnesium alloy, steel; The paint of substrate surface paint film is phenolic varnish, urethane ash paint, dry-film lubricant, epoxy organosilicon blade baking vanish; After carrying out depainting by described condition, the paint film removal effect is good, and ground does not have corrosion phenomenon.
(4) paint remover is to the corrosion test of ground
Treat the influence of depainting workpiece ground for the investigation paint remover and carry out following test.
1, makes ground with aluminium alloy test piece, 5 ' casting magnesium sheet and aluminium foil, be immersed in the paint remover that embodiment 1～5 makes soak time 2h respectively; 100 ℃ of the temperature of paint remover during immersion.The results are shown in Table 3.
Table 3
Changes in weight by before and after the table 3 test piece immersion can prove that paint remover does not have influence substantially to ground.
2, be ground with 5# casting magnesium sheet, the paint remover that makes with embodiment 2～5 soaks, and paint remover temperature and soak time the results are shown in Table 4 to the influence of ground when investigating immersion.
Table 4
3, the paint remover that makes with embodiment 2 soaks (soak time 2h to different grounds; The paint remover temperature is 100 ℃ during immersion), investigate the influence of paint remover to ground, the results are shown in Table 5.
Table 5
From the corrosion test result (table 3～5) of above-mentioned paint remover to ground, can prove paint remover depainting efficient height of the present invention, suitable ground kind is many, particularly goes for the responsive ground that aviation field is used.
Claims (9)
1, a kind of paint remover is characterized in that, is made up of organic bases 30～55wt%, organic solvent 40～65wt%, inhibiter 0.5～7wt%; Described organic bases is at least 160 ℃ of boiling points, and molecular weight is less than 200 hydramine; At least 200 ℃ of the boiling points of described organic solvent; Described inhibiter is a glucide.
2, paint remover according to claim 1 is characterized in that, is one or more mixture of Monoethanolamine MEA BASF, diethanolamine, ethyldiethanolamine, butyl diethanolamine, trolamine as the hydramine of described organic bases.
3, paint remover according to claim 1 is characterized in that, described organic solvent is one or more a mixture of phenylcarbinol, methylbenzyl alcohol, isophorone, N-Methyl pyrrolidone, N-ethyl pyrrolidone, ethylene glycol phenyl ether.
4, paint remover according to claim 1, it is characterized in that, be one or more mixture of erythritol, Xylitol, sorbyl alcohol, maltose alcohol, N.F,USP MANNITOL, Saccharum lactis, glucose, inositol, sucrose, maltose, tragacanth gum, gum arabic, agar, dextrin, gelatin as the glucide of described inhibiter.
5, a kind of method for preparing the described paint remover of claim 1 is characterized in that, at first with organic solvent and inhibiter, forms the solution of homogeneous under 50 ℃～100 ℃ stirrings, adds organic bases behind the cool to room temperature then, after stirring, filters and is finished product; Barrelling covers one deck oils encapsulant more thereon, seals; The mixture of one or more that described oils encapsulant is vegetables oil or mineral oil, its density are lower than paint remover and almost insoluble or slightly soluble in paint remover.
6, a kind of method of using the described paint remover of claim 1, it is characterized in that, paint remover is put into the depainting groove that has heating unit, the workpiece that to treat depainting again is immersed in the paint remover fully, add the oils encapsulant then, the surface of paint remover in the depainting groove is covered fully, and depainting is carried out in heating; The mixture of one or more that described oils encapsulant is vegetables oil or mineral oil, its density are lower than paint remover and almost insoluble or slightly soluble in paint remover.
7, the method for use paint remover according to claim 6 is characterized in that, described oils encapsulant, and the height of the oils encapsulant layer that paint remover in depainting groove surface forms is equivalent to 1/5th to 1/4th of paint remover height in the depainting groove.
8, the method for use paint remover according to claim 6 is characterized in that, the use temperature of described paint remover is at 80 ℃～110 ℃; The depainting time is within 4 hours.
9, according to method, it is characterized in that, between the usage period, adopt direct addition method in paint remover, to replenish organic bases or organic solvent, the alkalescence of paint remover is adjusted according to the described use paint remover of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100966084A CN100453606C (en) | 2006-10-11 | 2006-10-11 | Paint remover and its preparing method and using method |
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| CNB2006100966084A CN100453606C (en) | 2006-10-11 | 2006-10-11 | Paint remover and its preparing method and using method |
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| CN1944547A CN1944547A (en) | 2007-04-11 |
| CN100453606C true CN100453606C (en) | 2009-01-21 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101659806B (en) * | 2008-08-25 | 2012-06-13 | 鞍钢股份有限公司 | Paint remover for color-coated steel plates and using method thereof |
| 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 |
| CN102807781B (en) * | 2012-08-24 | 2014-12-10 | 刘杰 | Preparation method of paint cleaning agent |
| CN103937322A (en) * | 2014-04-23 | 2014-07-23 | 中国人民解放军第五七一九工厂 | Anhydrous paint remover composition |
| CN105386067A (en) * | 2015-11-20 | 2016-03-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Solution for removing high-temperature dry-film lubricating coatings |
| CN107266956A (en) * | 2016-04-07 | 2017-10-20 | 上海永泉化工科技有限公司 | A kind of plastics watery paint remover and preparation method |
| CN106280667A (en) * | 2016-08-23 | 2017-01-04 | 启东市奇赢服饰有限公司 | A kind of multifunctional paint remover |
| CN106752281A (en) * | 2016-11-28 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of neo-epoxy resin paint removes material and technique |
| 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 |
| CN110819158A (en) * | 2019-10-08 | 2020-02-21 | 华阳新兴科技（天津）集团有限公司 | Efficient environment-friendly nontoxic water-based paint remover as well as preparation method and use method thereof |
| CN113174159A (en) * | 2021-05-21 | 2021-07-27 | 上海恩坤化学品有限公司 | Removing agent, removing method and removing system for removing antifriction coating |
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| CN1775871A (en) * | 2005-12-12 | 2006-05-24 | 北京科技大学 | Alkali paint remover and its preparing and using method |
| CN1775872A (en) * | 2005-11-23 | 2006-05-24 | 大连轻工业学院 | Neutral environmental protection paint remover and its use method |
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- 2006-10-11 CN CNB2006100966084A patent/CN100453606C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775872A (en) * | 2005-11-23 | 2006-05-24 | 大连轻工业学院 | Neutral environmental protection paint remover and its use method |
| CN1775871A (en) * | 2005-12-12 | 2006-05-24 | 北京科技大学 | Alkali paint remover and its preparing and using method |
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| CN1944547A (en) | 2007-04-11 |
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Owner name: CNOOC CHANGZHOU PAINT + COATINGS INDUSTRY RESEARCH Free format text: FORMER OWNER: CHANGZHOU INST OF PAINT CHEMICAL, CHINESE CHEMICAL BUILDING CORP. Effective date: 20120910 |
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Effective date of registration: 20120910 Address after: 213016 Changzhou Zhong Road, Jiangsu Province, No. 22 Longjiang Road Patentee after: CNOOC Changzhou Paint & Coatings Industry Research Institute Address before: 213016, Jiangsu City, Changzhou province Bell Tower West Ring Road North intersection Patentee before: Changzhou Inst of Paint Chemical, Chinese Chemical Building Corp. |
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