CN114656830A - Universal long-acting water-based environment-friendly paint remover as well as preparation method and use method thereof - Google Patents
Universal long-acting water-based environment-friendly paint remover as well as preparation method and use method thereof Download PDFInfo
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- CN114656830A CN114656830A CN202210459825.4A CN202210459825A CN114656830A CN 114656830 A CN114656830 A CN 114656830A CN 202210459825 A CN202210459825 A CN 202210459825A CN 114656830 A CN114656830 A CN 114656830A
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- 239000003973 paint Substances 0.000 title claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000008367 deionised water Substances 0.000 claims abstract description 16
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 16
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 239000006184 cosolvent Substances 0.000 claims abstract description 10
- 150000007529 inorganic bases Chemical class 0.000 claims abstract description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 24
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 17
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 claims description 15
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 14
- 239000008139 complexing agent Substances 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 9
- 239000003112 inhibitor Substances 0.000 claims description 9
- YNOGYQAEJGADFJ-UHFFFAOYSA-N oxolan-2-ylmethanamine Chemical compound NCC1CCCO1 YNOGYQAEJGADFJ-UHFFFAOYSA-N 0.000 claims description 9
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 6
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 5
- QCDWFXQBSFUVSP-UHFFFAOYSA-N 2-phenoxyethanol Chemical compound OCCOC1=CC=CC=C1 QCDWFXQBSFUVSP-UHFFFAOYSA-N 0.000 claims description 5
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims description 5
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims description 5
- 239000001089 [(2R)-oxolan-2-yl]methanol Substances 0.000 claims description 5
- LVTYICIALWPMFW-UHFFFAOYSA-N diisopropanolamine Chemical compound CC(O)CNCC(C)O LVTYICIALWPMFW-UHFFFAOYSA-N 0.000 claims description 5
- 229940043276 diisopropanolamine Drugs 0.000 claims description 5
- 239000000176 sodium gluconate Substances 0.000 claims description 5
- 235000012207 sodium gluconate Nutrition 0.000 claims description 5
- 229940005574 sodium gluconate Drugs 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- BSYVTEYKTMYBMK-UHFFFAOYSA-N tetrahydrofurfuryl alcohol Chemical compound OCC1CCCO1 BSYVTEYKTMYBMK-UHFFFAOYSA-N 0.000 claims description 5
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 4
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 4
- 239000001509 sodium citrate Substances 0.000 claims description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 4
- WDQFELCEOPFLCZ-UHFFFAOYSA-N 1-(2-hydroxyethyl)pyrrolidin-2-one Chemical compound OCCN1CCCC1=O WDQFELCEOPFLCZ-UHFFFAOYSA-N 0.000 claims description 3
- FENFUOGYJVOCRY-UHFFFAOYSA-N 1-propoxypropan-2-ol Chemical compound CCCOCC(C)O FENFUOGYJVOCRY-UHFFFAOYSA-N 0.000 claims description 3
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 3
- ZFFTZDQKIXPDAF-UHFFFAOYSA-N 2-Furanmethanethiol Chemical compound SCC1=CC=CO1 ZFFTZDQKIXPDAF-UHFFFAOYSA-N 0.000 claims description 3
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims description 3
- KEZYHIPQRGTUDU-UHFFFAOYSA-N 2-[dithiocarboxy(methyl)amino]acetic acid Chemical compound SC(=S)N(C)CC(O)=O KEZYHIPQRGTUDU-UHFFFAOYSA-N 0.000 claims description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- GJOWSEBTWQNKPC-UHFFFAOYSA-N 3-methyloxiran-2-ol Chemical compound CC1OC1O GJOWSEBTWQNKPC-UHFFFAOYSA-N 0.000 claims description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 3
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- DDRPCXLAQZKBJP-UHFFFAOYSA-N furfurylamine Chemical compound NCC1=CC=CO1 DDRPCXLAQZKBJP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 3
- 229940068918 polyethylene glycol 400 Drugs 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 229960001790 sodium citrate Drugs 0.000 claims description 3
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 claims description 3
- 229940039790 sodium oxalate Drugs 0.000 claims description 3
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 3
- -1 tetrahydrofurfuryl Chemical group 0.000 claims description 3
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 claims description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 abstract description 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 abstract description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 abstract description 3
- 235000019253 formic acid Nutrition 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000003860 storage Methods 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 description 24
- 239000011248 coating agent Substances 0.000 description 16
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000002585 base Substances 0.000 description 6
- 229920000180 alkyd Polymers 0.000 description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 235000019445 benzyl alcohol Nutrition 0.000 description 3
- 239000006115 industrial coating Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- MHWRYTCHHJGQFQ-UHFFFAOYSA-N prop-2-enoic acid hydrate Chemical compound O.OC(=O)C=C MHWRYTCHHJGQFQ-UHFFFAOYSA-N 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- LYCAIKOWRPUZTN-NMQOAUCRSA-N 1,2-dideuteriooxyethane Chemical compound [2H]OCCO[2H] LYCAIKOWRPUZTN-NMQOAUCRSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
- C09D9/005—Chemical paint or ink removers containing organic solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a universal long-acting type water-based environment-friendly paint remover as well as a preparation method and a use method thereof, belonging to the field of paint removers. The universal long-acting water-based environment-friendly paint remover comprises, by weight, 30% -65% of deionized water, 5% -30% of inorganic base, 10% -30% of a main solvent, 1% -10% of a cosolvent and 5% -20% of an accelerator; compared with the prior art, the universal long-acting type water-based environment-friendly paint remover has the advantages that the paint universality is high; the paint removing performance is efficient and durable, the service life is long, and the consumption is low; the environment-friendly composite material does not contain dichloromethane, phenol, formic acid and a low-boiling-point solvent, is safe and environment-friendly, has low volatilization rate at normal temperature, small smell and good stability, and can well meet the requirements of transportation and storage; the cost is low, the production equipment is simple, the preparation method is simple, the use method is simple, and the economy is good.
Description
Technical Field
The invention relates to the field of paint removers, in particular to a universal long-acting water-based environment-friendly paint remover and a preparation method and a use method thereof.
Background
At present, although a plurality of types of water-based paint removers are available on the market, the universality of the water-based paint removers on the coating types is poor, the water-based paint removers are often only suitable for part of specific types of powder coatings or paints or water-based paints or electrophoretic paints, and the paint removing effect is not ideal when some coated workpieces with various coating types are coated. In addition, most of the water-based paint removers in the existing market are paint film dissolving type, and along with the prolonging of the service time and the accumulation of the dissolved amount of paint films, the paint removing effect of the paint remover is greatly reduced, so that the consumption of the paint remover is obviously increased, and even a groove needs to be frequently replaced; therefore, the universal long-acting type water-based environment-friendly paint remover, and the preparation method and the use method thereof are provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a universal long-acting water-based environment-friendly paint remover, and a preparation method and a use method thereof.
The purpose of the invention can be realized by the following technical scheme:
the general long-acting type water-based environment-friendly paint remover comprises, by weight, 30% -65% of deionized water, 5% -30% of inorganic base, 10% -30% of a main solvent, 1% -10% of a cosolvent, 5% -20% of an accelerator, 1% -10% of a complexing agent and 1% -5% of a corrosion inhibitor.
Further, the inorganic base is one or a mixture of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate.
Further, the main solvent is one or more of benzyl alcohol, dimethyl sulfoxide, sulfolane, N-dimethylformamide, morpholine, ethylene glycol monobutyl ether, diethylene glycol butyl ether, ethylene glycol monomethyl ether, propylene glycol methyl ether, propylene glycol propyl ether, ethylene glycol phenyl ether, N-methyl-2-pyrrolidone and N-hydroxyethyl-2-pyrrolidone.
Further, the cosolvent is one or a mixture of ethylene glycol, polyethylene glycol 400, glycerol, diethylene glycol and epoxypropanol.
Further, the accelerant is one or a mixture of furfuryl alcohol, tetrahydrofurfuryl alcohol, furfuryl mercaptan, furfuryl polyethylene glycol, tetrahydrofurfuryl polyethylene glycol, furfuryl amine, tetrahydrofurfuryl amine, 2-phenyl diethanolamine and octadecylamine.
Further, the complexing agent is one or a mixture of more of disodium ethylene diamine tetraacetate, tetrasodium ethylene diamine tetraacetate, sodium citrate, sodium oxalate and sodium gluconate.
Further, the corrosion inhibitor is one or a mixture of more of monoethanolamine, diethanolamine, triethanolamine, diisopropanolamine, triisopropanolamine and sodium metasilicate pentahydrate.
Further, the resistivity of the deionized water is greater than 4M Ω -cm.
In another aspect, the invention further provides a preparation method of the universal long-acting type water-based environment-friendly paint remover, which comprises the following steps:
dissolving inorganic base in deionized water to form base solution; then sequentially adding a main solvent, a cosolvent, an accelerator, a complexing agent and a corrosion inhibitor into the base solution;
stirring to completely dissolve all the components to obtain the universal long-acting water-based environment-friendly paint remover.
In a third aspect, the invention further provides a use method of the general long-acting type water-based environment-friendly paint remover, which is characterized in that a painting part to be subjected to paint removal is completely immersed in the general long-acting type water-based environment-friendly paint remover, the paint removal temperature is 70-90 ℃, and the paint removal time is 1-60 minutes.
The invention has the beneficial effects that:
the general long-acting water-based environment-friendly paint remover provided by the invention has strong universality, and can efficiently remove various conventional coatings, such as film-forming resins based on polyester resin, polyurethane resin, epoxy resin, acrylic resin, alkyd resin, fluorocarbon resin and the like, and powder coatings or paints or water-based paints or electrophoretic paints of different curing systems.
The paint removing performance is efficient and durable, the service life is long, and the consumption is low. Through scientific compounding of multiple components such as deionized water, inorganic base, a main solvent, a cosolvent, an accelerator, a complexing agent, a corrosion inhibitor and the like, the paint remover has an excellent paint film stripping effect and moderate paint film dissolving power, can dissolve a coating to a low degree, enables the coating to be stripped off from the surface of a base material in a sheet manner to a greater extent, gradually accumulates and precipitates to the bottom of a groove, thereby remarkably reducing the dissolution loss of the paint remover, and can always keep good paint removing effect through periodical groove inversion and filtration and cleaning of paint slag, so that the service life of the paint remover is greatly prolonged.
Without dichloromethane, phenol, formic acid and low boiling solvents. The environment-friendly type environment-friendly. Has good economical efficiency. Low cost, simple production equipment, simple preparation method and simple use method.
The paint removing performance is efficient and durable, the service life is long, and the consumption is low; the environment-friendly composite material does not contain dichloromethane, phenol, formic acid and a low-boiling-point solvent, is safe and environment-friendly, has low volatilization rate at normal temperature, small smell and good stability, and can well meet the requirements of transportation and storage; the cost is low, the production equipment is simple, the preparation method is simple, the using method is simple, and the economic performance is good.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The general long-acting type water-based environment-friendly paint remover comprises, by weight, 30% -65% of deionized water, 5% -30% of inorganic base, 10% -30% of a main solvent, 1% -10% of a cosolvent, 5% -20% of an accelerator, 1% -10% of a complexing agent and 1% -5% of a corrosion inhibitor.
Further, the inorganic base is one or a mixture of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate.
Further, the main solvent is one or a mixture of more of benzyl alcohol, dimethyl sulfoxide, sulfolane, N-dimethylformamide, morpholine, ethylene glycol monobutyl ether, diethylene glycol butyl ether, ethylene glycol monomethyl ether, propylene glycol methyl ether, propylene glycol propyl ether, ethylene glycol phenyl ether, N-methyl-2-pyrrolidone and N-hydroxyethyl-2-pyrrolidone.
Further, the cosolvent is one or a mixture of ethylene glycol, polyethylene glycol 400, glycerol, diethylene glycol and epoxypropanol.
Further, the accelerant is one or a mixture of furfuryl alcohol, tetrahydrofurfuryl alcohol, furfuryl mercaptan, furfuryl polyethylene glycol, tetrahydrofurfuryl polyethylene glycol, furfuryl amine, tetrahydrofurfuryl amine, 2-phenyl diethanolamine and octadecylamine.
Further, the complexing agent is one or a mixture of more of disodium ethylene diamine tetraacetate, tetrasodium ethylene diamine tetraacetate, sodium citrate, sodium oxalate and sodium gluconate.
Further, the corrosion inhibitor is one or a mixture of more of monoethanolamine, diethanolamine, triethanolamine, diisopropanolamine, triisopropanolamine and sodium metasilicate pentahydrate.
Further, the resistivity of the deionized water is greater than 4M omega cm.
Example 1: the general long-acting water-based environment-friendly paint remover comprises the components shown in the table 1
TABLE 1
| Paint stripper composition | Weight percent of |
| Deionized water | 50％ |
| Sodium hydroxide | 15％ |
| Benzyl alcohol | 10％ |
| Ethylene glycol | 5％ |
| Tetrahydrofurfuryl amine | 10％ |
| Sodium gluconate | 5％ |
| Triethanolamine | 5％ |
The preparation method of the paint remover comprises the following steps: dissolving sodium hydroxide in deionized water to form a base solution, then sequentially adding benzyl alcohol, ethylene glycol, tetrahydrofurfuryl amine, sodium gluconate and triethanolamine, and stirring to completely dissolve all the components to obtain the paint remover.
The using method of the paint remover for paint removal comprises the following steps: and completely immersing the painting part to be depainted in the depainting agent, wherein the temperature is 80 ℃, and keeping the temperature for 60 minutes.
Example 2: a general long-acting type water-based environment-friendly paint remover comprises the components shown in the following table 2:
TABLE 2
| Paint stripper composition | Weight percent of |
| Deionized water | 30％ |
| Sodium hydroxide | 15％ |
| Potassium hydroxide | 5％ |
| Benzyl alcohol | 10％ |
| Propylene glycol methyl ether | 10％ |
| Ethylene glycol | 2％ |
| Furfuryl alcohol | 10％ |
| Tetrahydrofurfuryl amine | 5％ |
| Ethylenediaminetetraacetic acid disodium salt | 10％ |
| Diisopropanolamine | 3％ |
The preparation method of the paint remover comprises the following steps: dissolving sodium hydroxide and potassium hydroxide in deionized water to form a base solution, then sequentially adding benzyl alcohol, propylene glycol methyl ether, ethylene glycol, furfuryl alcohol, tetrahydrofurfuryl amine, disodium ethylene diamine tetraacetate and diisopropanolamine, and stirring to completely dissolve all components to obtain the paint remover.
The above-mentioned paint remover is used for paint removal in the same manner as in example 1.
Example 3: the general long-acting water-based environment-friendly paint remover comprises the components shown in the table 3
TABLE 3
| Paint stripper composition | Weight percent of |
| Deionized water | 30％ |
| Potassium hydroxide | 15％ |
| Benzyl alcohol | 10％ |
| Propylene glycol methyl ether | 10％ |
| Ethylene glycol phenyl ether | 5％ |
| Ethylene glycol | 8％ |
| Tetrahydrofurfuryl alcohol | 10％ |
| Tetrahydrofurfuryl amine | 2％ |
| Citric acid sodium salt | 8％ |
| Triisopropanolamine | 2％ |
The preparation method of the paint remover comprises the following steps: dissolving potassium hydroxide in deionized water to form a base solution, then sequentially adding benzyl alcohol, propylene glycol methyl ether, ethylene glycol phenyl ether, ethylene glycol, tetrahydrofurfuryl alcohol, tetrahydrofurfuryl amine, sodium citrate and triisopropanolamine, and stirring to completely dissolve all the components to obtain the paint remover.
The above-described paint remover was used in the same manner as in example 1.
Coating the to-be-depainted coating parts with the same material, the same volume and the same surface area with polyester powder coating, epoxy powder coating, polyurethane paint, fluorocarbon paint, alkyd paint, acrylic acid water-based paint and cathode electrophoretic paint respectively.
The polyester powder coating is from Acksotruer powder coating
600；
The epoxy powder coating is from Acksonobel powder coating
100；
The used polyurethane paint is from Bethes industrial coating DJ-291-;
the fluorocarbon paint is from Beziaceae industrial coating FJ-233-;
the alkyd paint is from Bethes industrial coating AD-621-;
the acrylic acid water-based paint is from Xuanwei paint
LKD1030；
The cathode electrophoretic paint is derived from Basff cathode electrophoretic paint
800。
Through inspection, the paint remover obtained by the formula in the embodiment 1-3 can remove 6 kinds of coatings completely without residue within 60 minutes of action time at 80 ℃ for 6 kinds of coatings of different systems, and the paint removing rate is 100%. See table 4 specifically:
TABLE 4
In addition, after the paint remover prepared by the formula in the embodiment 1-3 is aged, 6 coatings of different systems can be removed completely without residue within 60 minutes of action time at 80 ℃, and the paint removing rate is 100%. See table 5 specifically:
TABLE 5
In the invention, inorganic alkali components are preferred, and the coating (polyester, polyurethane, alkyd and the like) containing ester bonds is easy to hydrolyze under strong alkali conditions, so that the coating can be quickly peeled off. Preferably, the aqueous solvent containing aromatic hydrocarbon functional groups utilizes the characteristic of low polarity of the aromatic hydrocarbon functional groups to increase similar compatible effect with coatings (acrylic acid, epoxy, fluorocarbon and the like) with the same low polarity, thereby being beneficial to improving the permeation swelling effect of the paint remover component on the coatings. Particular promoters and complexing agents are preferred to significantly promote osmotic swelling release of the coating by the paint stripper component. At the same time, the paint remover can also be endowed with more efficient and durable paint removing effect. The use method of heating soaking is optimized, so that the interaction among the components can be further accelerated, and the permeation, swelling and stripping effects of the paint remover on the coating are greatly improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (10)
1. The universal long-acting type water-based environment-friendly paint remover is characterized by comprising 30-65% of deionized water, 5-30% of inorganic base, 10-30% of main solvent, 1-10% of cosolvent, 5-20% of accelerator, 1-10% of complexing agent and 1-5% of corrosion inhibitor in percentage by weight.
2. The universal long-acting type aqueous environmentally friendly paint stripper according to claim 1, wherein the inorganic base is one or a mixture of sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate.
3. The universal long-acting aqueous environmentally friendly paint stripper according to claim 1, wherein the primary solvent is one or more of benzyl alcohol, dimethyl sulfoxide, sulfolane, N-dimethylformamide, morpholine, ethylene glycol monobutyl ether, diethylene glycol butyl ether, ethylene glycol monomethyl ether, propylene glycol methyl ether, propylene glycol propyl ether, ethylene glycol phenyl ether, N-methyl-2-pyrrolidone, N-hydroxyethyl-2-pyrrolidone.
4. The universal long-acting type water-based environment-friendly paint remover according to claim 1, wherein the cosolvent is one or more of ethylene glycol, polyethylene glycol 400, glycerol, diethylene glycol and epoxypropanol.
5. The universal long-acting aqueous environmentally friendly paint stripper according to claim 1, wherein the promoter is one or more of furfuryl alcohol, tetrahydrofurfuryl alcohol, furfuryl mercaptan, furfuryl polyethylene glycol, tetrahydrofurfuryl polyethylene glycol, furfuryl amine, tetrahydrofurfuryl amine, 2-phenyl diethanolamine, and octadecylamine.
6. The universal long-acting water-based environment-friendly paint remover according to claim 1, wherein the complexing agent is one or a mixture of disodium ethylenediamine tetraacetate, tetrasodium ethylenediamine tetraacetate, sodium citrate, sodium oxalate and sodium gluconate.
7. The universal long-acting type water-based environment-friendly paint remover according to claim 1, wherein the corrosion inhibitor is one or a mixture of more of monoethanolamine, diethanolamine, triethanolamine, diisopropanolamine, triisopropanolamine and sodium metasilicate pentahydrate.
8. The universal long-acting aqueous environmentally friendly paint stripper according to claim 1, wherein the deionized water has an electrical resistivity greater than 4M Ω -cm.
9. A method for preparing the universal long-acting type water-based environment-friendly paint remover as claimed in any one of claims 1 to 8, which comprises the following steps:
dissolving inorganic base in deionized water to form base solution; then sequentially adding a main solvent, a cosolvent, an accelerator, a complexing agent and a corrosion inhibitor into the base solution;
stirring to completely dissolve all the components to obtain the universal long-acting water-based environment-friendly paint remover.
10. The use method of the universal long-acting type water-based environment-friendly paint remover as claimed in any one of claims 1 to 8, characterized in that a painting part to be removed is completely immersed in the universal long-acting type water-based environment-friendly paint remover, the paint removing temperature is 70-90 ℃, and the paint removing time is 1-60 minutes.
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| CN116731551A (en) * | 2023-06-28 | 2023-09-12 | 广东润和新材料科技有限公司 | Environment-friendly paint remover for aviation use and preparation method and application thereof |
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| CN109370297A (en) * | 2018-09-18 | 2019-02-22 | 华阳新兴科技（天津）集团有限公司 | A kind of practical high-efficient environment protection watery paint remover and its preparation method and application |
| CN111892840A (en) * | 2020-08-18 | 2020-11-06 | 深圳市众望丽华实业有限公司 | Water-based paint remover and preparation method and application thereof |
| CN111944356A (en) * | 2020-09-18 | 2020-11-17 | 东莞市四辉表面处理科技有限公司 | Low-scratch glass paint remover and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109370297A (en) * | 2018-09-18 | 2019-02-22 | 华阳新兴科技（天津）集团有限公司 | A kind of practical high-efficient environment protection watery paint remover and its preparation method and application |
| CN111892840A (en) * | 2020-08-18 | 2020-11-06 | 深圳市众望丽华实业有限公司 | Water-based paint remover and preparation method and application thereof |
| CN111944356A (en) * | 2020-09-18 | 2020-11-17 | 东莞市四辉表面处理科技有限公司 | Low-scratch glass paint remover and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116731551A (en) * | 2023-06-28 | 2023-09-12 | 广东润和新材料科技有限公司 | Environment-friendly paint remover for aviation use and preparation method and application thereof |
| CN116731551B (en) * | 2023-06-28 | 2024-06-04 | 广东润和新材料科技有限公司 | Environment-friendly paint remover for aviation use and preparation method and application thereof |
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Application publication date: 20220624 |