CN105462461A - Waterborne primer composition for peeling coating and coating peeling method - Google Patents
Waterborne primer composition for peeling coating and coating peeling method Download PDFInfo
- Publication number
- CN105462461A CN105462461A CN201510621684.1A CN201510621684A CN105462461A CN 105462461 A CN105462461 A CN 105462461A CN 201510621684 A CN201510621684 A CN 201510621684A CN 105462461 A CN105462461 A CN 105462461A
- Authority
- CN
- China
- Prior art keywords
- coating
- base composition
- acid
- paint base
- vibrin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000000576 coating method Methods 0.000 title claims abstract description 104
- 239000011248 coating agent Substances 0.000 title claims abstract description 94
- 239000000203 mixture Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title description 28
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- 150000002009 diols Chemical class 0.000 claims abstract description 15
- 150000003839 salts Chemical class 0.000 claims abstract description 14
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- 239000001257 hydrogen Substances 0.000 claims abstract description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 8
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims abstract 3
- 239000003973 paint Substances 0.000 claims description 56
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- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 25
- KKEYFWRCBNTPAC-UHFFFAOYSA-N terephthalic acid group Chemical group C(C1=CC=C(C(=O)O)C=C1)(=O)O KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 22
- -1 carboxylic acid halides Chemical class 0.000 claims description 19
- 229910052728 basic metal Inorganic materials 0.000 claims description 7
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- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
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- 238000005554 pickling Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000019830 sodium polyphosphate Nutrition 0.000 description 1
- KVCGISUBCHHTDD-UHFFFAOYSA-M sodium;4-methylbenzenesulfonate Chemical compound [Na+].CC1=CC=C(S([O-])(=O)=O)C=C1 KVCGISUBCHHTDD-UHFFFAOYSA-M 0.000 description 1
- MZSDGDXXBZSFTG-UHFFFAOYSA-M sodium;benzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=CC=C1 MZSDGDXXBZSFTG-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
The invention provides a waterborne primer composition; the waterborne primer composition can use less labor to easily and reliably remove the coating on a coating ware having no deformation and damage; the waterborne primer composition comprises polyester resin formed by condensing main ingredients like dicarboxylic acid and diol, salt, and water; the polyester resin comprises a substituent group represented by -SO3M (M refers to either hydrogen, alkalis, ammonium ion or alkylolamide).
Description
Technical field
The present invention relates to a kind of can effectively except attachment removal or be piled up in the solidification of the application utensil class to use in the coating process of the various coated objects of the coating process of automobile or uncured coating or film, coating peels off use paint base composition and coating stripping means.
Background technology
Application utensil class is used in based on the coating process of the various coated objects of the coating process of automobile, but in these application utensil classes when attachment or accumulation coating, operability or function reduce, therefore, need to peel off removing solidification or uncured coating every certain period from application utensil class.
As the application utensil class used in the coating process of the coated object of application based on automobile, can enumerate such as: masking jig, grid (ス ノ コ) and paint room (paintbooth) etc.Be attached to the method for the film of these application utensil classes as removing, be currently suggested various method.Such as this method, there will be a known: (i) uses that film is carried out the method for burning disposal by method, (iii) being carried out heating by the waterborne cleaning agent taking caustic alkali as main component and use with the method for the organic solvent such as methylene dichloride or the thinner coating stripper that is main component, (ii), (iv) uses hammer or scraper etc. to give the vibration of physics or the method for impact and (v) silicone resin or fluoro-resin that prevent the attachment of coating are coated on the method etc. of application utensil class on film.
But, when method (i), use the chlorine series solvent such as the igniting property solvent such as dimethylbenzene, ketone or methylene dichloride as the solvent of coating stripper, therefore, need the countermeasure ensureing operation environment safety and prevent from igniting.There is many problems in the method in the operation wholesomenesses such as toxicity, foul smell, igniting property and liquid waste disposal or environmental pollution.With methylene dichloride be particularly the coating stripper of main component be used as prior art well-known, can effectively utilize, but worry the morbidity etc. of cholangiocarcinoma on the impact of human body be difficult at present use.Method (ii) is high due to the concentration of alkali composition, therefore has problems in security.And about fully by the caustic alkali used, when its concentration is more than 5%, the Hazardous substances of banning in method as poisonous substance and violent in toxicity is designated, and therefore, uses and becomes loaded down with trivial details.Method (iii), due to the generation with poisonous exhaust, therefore has problems in topsoil.And then method (iv) is not only until the difficulty of stripping completely in thin portion, and existence makes application utensil class be out of shape or, operation efficiency very low such difficult point high by the danger of damaging.Method (v) is owing to can not prevent the attachment of coating completely, and cost is high, worries that (repellency) is repelled in application, therefore can not popularize.Existence to method (v), is difficult to the shortcoming except attachment removal coating by described method (i) on the whole.
As other method, there is following methods: the part of adhering at the coating of application utensil class applies priming paint in advance, after coating process adheres in a way or piles up coating, peel off with water soluble paint stripper (patent documentation 1) or solvent.When peeling off with water soluble paint stripper, in (patent documentations 2,3,4,5,6) such as polyvinyl alcohol, Polyvinylpyrolidone (PVP), water-soluble propenoic-acids resin, etherified celluloses, stripping performance is insufficient.
As the application stripping priming paint of oil type, full-bodied lubricating grease is cheap and effective, is therefore widely used, but be easily dissolved in solvent system coating, in addition, repel water-borne coatings, therefore, sometimes cause non-cohesive and coating that is that fall causes application product bad etc., cause productivity to reduce.In addition, because lubricating grease is certainly as high pollution, the pollution of the environment therefore also becomes problem.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2002-275394
Patent documentation 2: Japanese Unexamined Patent Publication 2000-191961
Patent documentation 3: Japanese Unexamined Patent Publication 8-134386
Patent documentation 4: Japanese Unexamined Patent Publication 4-149284
Patent documentation 5: Japanese Laid-Open Patent Publication 63-209771
Patent documentation 6: Japanese Laid-Open Patent Publication 62-246973
Summary of the invention
Invent problem to be solved
The present invention is in view of the truth in this field as above, its object is to, provide a kind of coating when using water soluble paint stripper to peel off attachment or be piled up in the solidification of the application utensil class to use in the coating process of the various coated objects of the coating process of automobile or uncured coating or film, that can effectively remove to peel off use paint base composition and coating stripping means.
For solving the technical scheme of problem
In order to solve described problem, the present inventor is repeated and concentrates on studies, result, until the present invention.That is, the present invention relates to a kind of coating containing following composition and peel off use paint base composition and coating stripping means.
Use paint base compositions peeled off by 1. 1 kinds coating, it is characterized in that, containing with dicarboxylic acid component and diol component for main component carries out the vibrin of polycondensation or its salt and water, wherein, vibrin has by-SO
3the substituting group that M (M represents any one in hydrogen, basic metal, ammonium ion, alkanolamine) represents.
Use paint base composition peeled off by 2. coating according to item 1, and it is characterized in that, vibrin has by-COOM ' (M ' represent in hydrogen, basic metal, ammonium ion, alkanolamine any one) substituting group that represents.
Use paint base composition peeled off by 3. coating according to item 1, and wherein, dicarboxylic acid component is the derivates in terephthalic acid or the acid anhydride being selected from terephthalic acid, ester, carboxylic acid halides or their combination.
Use paint base composition peeled off by the coating of item 4. according to any one in item 1 ~ 3, and it is characterized in that, dicarboxylic acid component has by-SO
3the group that M represents.
Use paint base composition peeled off by the coating of item 5. according to item 1, and wherein, dicarboxylic acid component is terephthalic acid, m-phthalic acid or their combination, diol component is ethylene glycol, Diethylene Glycol, 1,4-butyleneglycol, 1,6-hexylene glycol, 1,4 cyclohexane dimethanol or their combination.
Use paint base composition peeled off by the coating of item 6. according to any one in item 1 ~ 5, and wherein, peel off the quality of use paint base composition relative to coating, the concentration of described vibrin and salt thereof is 1 ~ 50 quality %.
The stripping means of item 7. 1 kinds of coating, wherein, peels off use paint base composition by the coating described in any one in item 1 ~ 6 and coats application utensil class before application, uses coating stripper from application utensil class removing solidification or uncured coating after application.
Invention effect
Peel off the application utensil class attachment of the overlay film of use paint base composition even if surface has coating of the present invention or pile up unwanted coating, when using water soluble paint stripper to process, also be full of cracks can be produced in attachment or the coating piled up, to be full of cracks in saturated with water soluble paint stripper and make overlay film dissolve, swelling, therefore, attachment or the coating piled up float from the surface of application utensil class and easily and peel off partially or completely.Therefore, peel off use paint base composition according to coating of the present invention, as the bight of application utensil class or bend etc. like that, at the position that coating overburden ratio is more difficult, also easily can peel off the coating of attachment or accumulation at short notice.According to the present invention, do not have the distortion of application utensil class or breakage, can with few labour easily and reliably removing be attached to the coating of application utensil class.
In addition, after coating lift-off processing, generally carry out washing process, but the overlay film water dissolution formed by paint base composition of the present invention removes, therefore, there is not the residual stripping of coating, when the overlay film from new paint base composition is formed, what maintain the coating of overlay film well is closely sealed.
Embodiment
Below, peel off use paint base composition to coating of the present invention to describe in detail.Use paint base composition peeled off by coating of the present invention, it is characterized in that, containing with dicarboxylic acid component and diol component for main component carries out the vibrin of polycondensation or its salt and water, wherein, vibrin has by-SO
3the substituting group that M (M represents any one in hydrogen, basic metal, ammonium ion, alkanolamine) represents.
As M, more than a kind in following material can be enumerated: hydrogen; The basic metal such as Li, Na, K, Cs; Ammonium ion; And the alkanolamine such as monoethanolamine alkanolamine, diethanolamine, trolamine, monoisopropanolamine, diisopropanolamine (DIPA), tri-isopropanolamine.
In multiple repeated structural units in vibrin, multiple M can be identical or different.As M, be preferably Na, K.
In one embodiment, vibrin has the repeated structural unit represented by following formula (1).
In formula, R
1for aromatic group or aliphatic group, R
2for aliphatic group, alicyclic group or aromatic group, at R
1and R
2at least one in there is-SO
3m.R
1, R
2detailed description, about dicarboxylic acid component and diol component, as described below.
By-SO
3the substituting group that M represents can be directed in vibrin by dicarboxylic acid component's an alkali metal salt, carboxylic acid halides and these ester cpds such as () such as sulfoterephthalic, 5-sulfoisophthalic acid, 2-sulfoisophthalic acid, 4-sulfoisophthalic acid of making to have this group or the diol component (such as BDO-2-sodium sulfonate) with this group and corresponding diol component or dicarboxylic acid component's polycondensation simultaneously.By having-SO
3m base, gives excellent wetting ability to vibrin.
Have by-SO
3the substituent dicarboxylic acid component that M represents or diol component are preferably the scope of 0.5 ~ 30 % by mole relative to the total amount of the composition forming vibrin, are more preferably the scope of 1 ~ 20 % by mole, are particularly preferably the scope of 3 ~ 15 % by mole.By being set to described scope, give wetting ability excellent especially to vibrin.
In dicarboxylic acid component, except dicarboxylic acid, also comprise the derivatives such as the acid anhydride of this dicarboxylic acid, ester, carboxylic acid halides or their combination, namely react with glycol and form the material of ester bond.
As dicarboxylic acid, can enumerate: aromatic dicarboxylic acid, aliphatic dicarboxylic acid.As aromatic dicarboxylic acid, can enumerate such as: terephthalic acid, m-phthalic acid, phthalic acid, diphenic acid, naphthoic acid, 1,2-naphthalene dicarboxylic acids, Isosorbide-5-Nitrae-naphthalene dicarboxylic acids, 1,5-naphthalene dicarboxylic acids, 2,6-naphthalene dicarboxylic acids.As aliphatic dicarboxylic acid, can enumerate: such as oxalic acid, propanedioic acid, succsinic acid, toxilic acid, methylene-succinic acid, pentanedioic acid, hexanodioic acid, pimelic acid, 2,2-dimethylated pentanedioic acid, suberic acid, nonane diacid, sebacic acid, dodecanedioic acid, 1,3-cyclopentane dicarboxylic acid, Isosorbide-5-Nitrae-cyclohexane dicarboxylic acid, diglycollic acid, thio-2 acid etc.These dicarboxylic acid both can be used singly or in combination of two or more.In these dicarboxylic acid, from the viewpoint of the weather resistance of the easiness of reacting, the resin obtained, preferred use terephthalic acid, m-phthalic acid, succsinic acid, hexanodioic acid, sebacic acid, dodecanedioic acid and their combination, more preferably use terephthalic acid, m-phthalic acid and their combination.
In diol component, except glycol, also comprise the diol, derivatives such as the diacetate compound of this glycol, namely react with dicarboxylic acid component and form the material of ester bond.
As glycol, can enumerate: aliphatic diol, alicyclic diol or aromatic diol.Specifically, can enumerate: the polyoxyethylene glycol such as ethylene glycol, Diethylene Glycol, triethylene glycol, TEG, five ethylene glycol, six ethylene glycol, the polypropylene glycols such as propylene glycol, dipropylene glycol, tripropylene glycol, four propylene glycol, 1, ammediol, 1, 3-butyleneglycol, 1, 4-butyleneglycol, 1, 5-pentanediol, 1, 6-hexylene glycol, 2, 2-dimethyl-1, ammediol, 2-ethyl-2-butyl-1, ammediol, 2-ethyl-2-isobutyl--1, ammediol, 2, 2, 4-trimethylammonium-1, 6-hexylene glycol, 1, 2-cyclohexanedimethanol, 1, 3-cyclohexanedimethanol, 1, 4-cyclohexanedimethanol, 2, 2, 4, 4-tetramethyl--1, 3-cyclobutanediol, 4, 4 '-dihydroxybiphenyl phenol, 4, 4 '-methylene radical biphenol, 4, 4 '-isopropylidenediphenol, 1, 5-dihydroxy naphthlene, 2, 5-dihydroxy naphthlene, 2, two (4-hydroxy phenyl) propane (dihydroxyphenyl propane) of 2-, bisphenol S.These glycol both can be used singly or in combination of two or more.In these glycol, from the viewpoint of the weather resistance of the easiness of reacting, the resin obtained, preferably make spent glycol, Diethylene Glycol, BDO, 1,6-hexylene glycol, 1,4 cyclohexane dimethanol and their combination.
Dicarboxylic acid and glycol both can make a kind of reaction respectively, also can make multiple dicarboxylic acid or glycol and a kind of corresponding glycol or dicarboxylic acid reaction, can also make multiple dicarboxylic acid and the reaction of multiple glycol.Preferably make multiple dicarboxylic acid and the reaction of multiple glycol.In one embodiment, dicarboxylic acid is terephthalic acid, m-phthalic acid or their combination, and glycol is ethylene glycol, Diethylene Glycol, BDO, 1,6-hexylene glycol, 1,4 cyclohexane dimethanol or their combination.
Vibrin of the present invention can have in addition by-COOM ' substituting group that represents.
As M ', more than a kind of being selected from following material can be enumerated: hydrogen; The basic metal such as Li, Na, K, Cs; Ammonium ion; And the alkanolamine such as monoethanolamine alkanolamine, diethanolamine, trolamine, monoisopropanolamine, diisopropanolamine (DIPA), tri-isopropanolamine.M ' and-SO
3the above-mentioned M of M can be identical, also can be different, but preferably identical.M ' may reside in the position of the end not being polymerized dicarboxylic acid component.
Vibrin of the present invention can have the structural unit of the polycarboxylic acid composition more than from ternary further.That is, with above-mentioned dicarboxylic acid component, diol component, there is-SO
3the dicarboxylic acid component of M base or diol component simultaneously, can use the vibrin that polycarboxylic acid polycondensation becomes.In this situation, 2 carboxyls in polycarboxylic acid composition use in the formation of the ester bond of polycarboxylic acid composition and diol component, but the remaining carboxyl do not used in ester is formed can become the substituting group-COOM ' of the side chain freely of vibrin.In above-mentioned (1), when vibrin of the present invention has the polycarboxylic acid composition of more than ternary, R
1-COOM ' can be had as side chain freely.
-COOM from this polycarboxylic acid ' base (M ' as mentioned above) contributes to the water-soluble raising of vibrin, therefore preferably.-COOM ' base by carrying out in alkali metal compound or alkanolamine, ammonia etc. and, can water solvent be dissolved in.
As polycarboxylic acid composition more than ternary, can enumerate: benzene-1, trimellitic acid, trimellitic acid 1,2-anhydride, trimesic acid, mellophanic acid, Pyromellitic Acid, pyromellitic dianhydride, benzene pentacarbonic acid, mellitic acid etc.
Vibrin of the present invention and salt thereof can use the vibrin and salt thereof that are commercially available, maybe the terephthalic acid be commercially available, replacement dicarboxylic acid, glycol etc. can be used as raw material and synthesize.Each composition can manufacture respectively by existing known general method.
When manufacturing vibrin in the present invention and salt thereof, can using described composition as reactant, utilize the conventional techniques in this field to synthesize.Synthesis usually by dicarboxylic acid component and glycol transesterification reaction and form with its ester polycondensation carried out continuously.Existing known catalyzer (such as, titanium, antimony, magnesium, calcium etc.) can be added as catalyzer in the arbitrary period of reaction.
As the commercially available product of the vibrin in the present invention and salt thereof, can enumerate: Goo Chemical Co., Ltd. PlascoatZ-221, Z-446, Z-561, RZ-105, RZ-570, high terebinth Co., Ltd. ペ ス レ ジ Application A-110, Toyo Boseki K.K VylonalMD-1200, Toagosei Co., Ltd AronmeltPES-1000 series, PES-2000 are serial.
The molecular weight (number-average molecular weight) of the vibrin used in the present invention is 10000 ~ 1000000.Even if coating peels off use paint base composition in order at short notice at the position that the coating overburden ratio that the bight of application utensil class or bend etc. are such is more difficult, also the performance of the coating easily peeling off attachment or accumulation is played, be necessary there is sufficient thickness and overlay film to each corner, therefore, molecular weight is the bigger the better.As the measuring method of the molecular weight of vibrin, be not particularly limited, suitably can select from known method, can enumerate such as: gel permeation chromatography (GPC method), viscosimetry, light scattering method etc.
The vibrin that the vibrin used in the present invention can become for the polycondensation containing other composition beyond above-mentioned dicarboxylic acid, glycol, polycarboxylic acid, can contain such as from the structural unit of the multi-functional compounds such as tetramethylolmethane, TriMethylolPropane(TMP), dihydroxy methylpropane.The structural unit of other described composition is preferably below 30 quality % relative to resin entirety, more preferably below 20 quality %, further preferably below 10 quality %, particularly preferably below 5 quality %, most preferably below 1 quality %.
The water that use paint base composition contains above-mentioned vibrin and salt and surplus peeled off by coating of the present invention.
The vibrin in use paint base composition peeled off by coating of the present invention and the ratio shared by salt is not particularly limited, and is generally 1 ~ 50 quality %, is preferably 1 ~ 20 quality %, is more preferably 2 ~ 10 quality %.
Use paint base composition peeled off by coating of the present invention can additive containing the tensio-active agent such as wetting ability imparting agent, nonionic surfactant, flow agent, antiseptic-germicide, mould resistant, tackifier, rust-preventive agent etc. beyond composition, defoamer.As these additives, existing known material can be used.The use level of these additives that coating is peeled off in use paint base composition is generally about 0 ~ 10 quality %, is preferably about 0.5 ~ 5 quality %, is more preferably about 1 ~ 3 quality %.
Coating of the present invention peeled off use paint base composition before utilizing application utensil class application coated object, processed in advance on the surface of application utensil class.Make after the coating of the invention described above peels off the attachment of use paint base composition by utilizing pickling process, spray method, spray coating method etc. on the surface of application utensil class, by seasoning or heat drying (such as 60 ~ 90 DEG C), moisture is evaporated, thus, overlay film is formed on the application surface of utensil class.
As application utensil class, can enumerate: the application apparatus such as suspension bracket, fixture, grid, painting device, paint robot arm and the paint inwall of room or floor component etc.
The thickness that the overlay film of use paint base composition peeled off by coating is not particularly limited, and is generally 10 ~ 100 μm, is preferably 15 ~ 50 μm.When the thickness of overlay film is more than 10 μm, can peeling effect be obtained, effectively can remove coating.In addition, when it is below 100 μm, the removability of drying property or overlay film self is good, in addition, when piling up the impact of the state applying physics having coating with the upper attachment of peeling off the overlay film of use paint base composition at coating, the generation that coating peels off the defective products that (tumbling) causes can be prevented.
Be explained, coating can be known one or more coating arbitrary, and this coating is commercially available.
When application utensil class surface with the overlay film of paint base composition uses in coating process according to respective object, form coated film on the surface at the overlay film of this paint base composition, this application solution of utensil class containing coating stripper gives clean.As coating stripper, can by the coating stripper used in current this field, suitably select according to the kind of attachment coating or the material etc. of attachment thickness and processed object.As coating stripper, can enumerate such as: water; Alkali aqueous solution containing an alkali metal salts such as sodium hydroxide, potassium hydroxide, sodium polyphosphate, sodium carbonate; The aromatic alcohols such as benzylalcohol; The aromatic ethers such as phenyl methyl ether; The alkanolamines such as thanomin; The glycols such as ethylene glycol, propylene glycol; The alkoxy aryl such as DMF, DMSO, glycol ethers, ethyl glycol acetate, phenylmethylether; The arylsulphonate such as benzene sulfonic acid sodium salt, toluenesulfonic acid sodium salt; And their combination etc.In one embodiment, coating stripper is the neutral coating stripper containing water, aromatic alcohols and arylsulphonate.In other embodiments, coating stripper is the alkaline coating stripper containing water, aromatic alcohols, arylsulphonate and an alkali metal salt.
Coating stripper can be any one in alkaline type (being greater than pH8) or neutral type (pH6 ~ 8).
As the using method of stripper, flooding and use, as exfoliation temperature, is 5 DEG C ~ 100 DEG C, preferably 50 DEG C ~ 90 DEG C, more preferably 70 DEG C ~ 90 DEG C.
Coating of the present invention is peeled off use paint base composition and generally can be suitable for the uncured film being attached to application utensil class.
Embodiment
Below, by embodiment, the present invention is described further.
stripping performance is evaluated
[embodiment 1 ~ 9 and comparative example 1 ~ 11]
Peel off with regard to use paint base composition with regard to the coating of embodiment and comparative example, in the aqueous dispersions with various commercially available sulfonic vibrin and salt or polyester carboxylic acid and salt thereof, add water, adjustment nonvolatile component and for test.
After the treadmill test sheet (70mm × 50mm × 0.8mm) of cold-rolled steel sheet (SPCC-SD) is carried out acetone degreasing, with the sand paper polishing of #240, impregnated in the cooperation formula according to table 1 or table 2 and use paint base composition peeled off by the coating that adjusts.
By mentioning test film and carrying out drying treatment (60 DEG C, 60 minutes), form the overlay film be made up of coating stripping use paint base composition from the teeth outwards.By this test film being impregnated in auto parts paint application (Paint Co., Ltd. of whitewash OP-30-P Japan system) and mentioning and coating composition, thereafter, carry out toasting (140 DEG C, 30 minutes).After baking vanish, impregnated in the water soluble paint stripper being heated to 50 DEG C, measure until coating is stripped the time of removing completely.The result of stripping performance evaluation is shown in table 1 and table 2, the composition of water soluble paint stripper A, B is shown in table 3.
Learnt by table 1: if use paint base composition of the present invention, even if then use the stripper being generally difficult to the neutrality peeled off, the splitting time of coating or film is also short, has sufficient stripping performance.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | |
| A-1 | 100 | ||||||||
| A-2 | 40 | ||||||||
| A-3 | 8 | 20 | 40 | 8 | 40 | ||||
| A-4 | 40 | 40 | |||||||
| Water | 0 | 60 | 92 | 80 | 60 | 60 | 92 | 60 | 60 |
| Water soluble debonding agent | A | A | A | A | A | A | B | B | B |
| Splitting time (s) | 90 | 90 | 90 | 90 | 90 | 90 | 120 | 90 | 120 |
A-1: mutual induction chemistry society PlascoatZ-221 (polyester sulfonate sodium, nonvolatile component 20wt%, molecular weight about 14000)
A-2: mutual induction chemistry society PlascoatZ-446 (polyester sulfonate sodium, nonvolatile component 25wt%, molecular weight about 16000)
A-3: mutual induction chemistry society PlascoatZ-561 (polyester sulfonate sodium, nonvolatile component 25wt%, molecular weight about 27000)
A-4: mutual induction chemistry society PlascoatRZ-105 (polyester sulfonate sodium, nonvolatile component 25wt%, molecular weight about 16000)
Table 2
A-1: the first industrial pharmaceutical society SUPERFLEX126 (polyester-polyether series anion water dispersion of polyurethane resin, nonvolatile component 20wt%)
A-2: the first industrial pharmaceutical society SUPERFLEXE-4800 (polyethers system nonionic/weak anionic water dispersion of polyurethane resin, nonvolatile component 20wt%)
A-3: bright one-tenth chemistry society MeikatexHP-600 (polyethylene wax, non-volatility composition 25wt%)
A-4: bright one-tenth chemistry society MeikatexJP-70C (polyethylene wax, non-volatility composition 30wt%)
A-5: Xin chemical industry society ChalineFE-230N (vinylformic acid silicone latex, nonvolatile component 30wt%)
A-6:ChubuSaidenCo., Ltd. バ Application ス タ ー S-990 (acrylic ester copolymerization latex, nonvolatile component 49wt%)
A-7:BASF society JONCRYLPDX-7677 (styrene acrylic system resin emulsion, nonvolatile component 50wt%)
The water soluble paint stripper composition used in table 3 benchmark test
Claims (7)
1. a use paint base composition peeled off by coating, it is characterized in that, containing with dicarboxylic acid component and diol component for main component carries out vibrin or its salt, the He Shui of polycondensation, wherein, vibrin has by-SO
3the substituting group that M represents, wherein M represents any one in hydrogen, basic metal, ammonium ion, alkanolamine.
2. use paint base composition peeled off by coating according to claim 1, it is characterized in that,
Vibrin has by-COOM ' substituting group that represents, wherein M ' represents any one in hydrogen, basic metal, ammonium ion, alkanolamine.
3. use paint base composition peeled off by coating according to claim 1, wherein,
Dicarboxylic acid component is terephthalic acid or the derivates that is selected from the acid anhydride of terephthalic acid, ester, carboxylic acid halides or their combination.
4. use paint base composition peeled off by coating according to claim 1, it is characterized in that,
Dicarboxylic acid component has by-SO
3the group that M represents.
5. use paint base composition peeled off by coating according to claim 1, wherein,
Dicarboxylic acid component is terephthalic acid, m-phthalic acid or their combination, and diol component is ethylene glycol, Diethylene Glycol, BDO, 1,6-hexylene glycol, 1,4 cyclohexane dimethanol or their combination.
6. use paint base composition peeled off by the coating according to any one in Claims 1 to 5, wherein,
Peel off the quality of use paint base composition relative to coating, the concentration of described vibrin and salt thereof is 1 ~ 50 quality %.
7. the stripping means of a coating, wherein, before application, the coating described in any one in claim 1 ~ 6 is peeled off use paint base composition to coat in application utensil class, after application, use coating stripper from application utensil class removing solidification or uncured coating.
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| CN108602091A (en) * | 2016-11-04 | 2018-09-28 | 株式会社尼欧斯 | The coating stripping means of application fixture |
| CN109266093A (en) * | 2017-07-12 | 2019-01-25 | 深圳市美丽华科技股份有限公司 | A kind of aqueous soluble protection ink |
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| ES2980403T3 (en) * | 2019-04-03 | 2024-10-01 | Chemetall Gmbh | Improved method for purging water-based paint and purge cleaner circuits |
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| JP2013245255A (en) * | 2012-05-24 | 2013-12-09 | Goo Chemical Co Ltd | Masking material |
| CN103694872A (en) * | 2012-09-27 | 2014-04-02 | 比亚迪股份有限公司 | Water-based strippable coating composition |
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| CN109266093A (en) * | 2017-07-12 | 2019-01-25 | 深圳市美丽华科技股份有限公司 | A kind of aqueous soluble protection ink |
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| JP2016069633A (en) | 2016-05-09 |
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