CN109836980A - A kind of coating composition and the coating system comprising it - Google Patents
A kind of coating composition and the coating system comprising it Download PDFInfo
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- CN109836980A CN109836980A CN201710914082.4A CN201710914082A CN109836980A CN 109836980 A CN109836980 A CN 109836980A CN 201710914082 A CN201710914082 A CN 201710914082A CN 109836980 A CN109836980 A CN 109836980A
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Abstract
The present invention relates to a kind of coating composition and include its coating system, relate more specifically to the coating method and application of a kind of coating composition and strippable coating system, coating system comprising the coating composition, and the product obtained using the linkable paint system.The coating composition includes: the compound containing isocyanate-reactive group；Polyisocyanates, the isocyanato group functionality of the polyisocyanates are not less than 2.8, and the equivalent proportion of the isocyanate groups and the isocyanate-reactive group is 0.5:1-10:1；And organic solvent.
Description
Technical field
Strippable coating system, coating system the present invention relates to a kind of coating composition and comprising the coating composition
Coating method and application, and the product obtained using the linkable paint system.
Background technique
Automobile market exist changed colour to the appearance of vehicle or on vehicle spray personalized pattern demand.If
Original factory of vehicle surface of vehicle paint direct spraying colored paint, can destroy genuine paint.
It in order to neither destroy original factory of vehicle paint, and realizes and repeatedly changes colour or spray pattern, currently used method is in vapour
Paste one layer of Colored plastic film for being cut into different shape and pattern in vehicle surface.However, since plastic film is plane, and vapour
Vehicle has stereochemical structure, therefore, when pasting plastic film, needs by glue and is aided with pullling for external force, can just make to mould
Expect film adhered car surface.Since plastic film itself has shrinkage, the plastic film at car body edge can occur degumming, stick up
The phenomenon that rising, makes car surface unsightly.In addition, after several weeks or several months, it is not easy to which plastic film is shelled from car surface
From even if removing, the glue on plastic film can also remain in car surface, not easy-clear.
Therefore, a kind of Stripable paint is attempted to look in industry to replace above-mentioned plastic film.
US6458441B1 discloses a kind of single layer Stripable paint, by not solvent-laden aqueous anionic polyurethane-polyureas
Dispersion composition.The advantages of coating that the Stripable paint is formed is that ductility is good, tensile strength is big, is easily peeled off, can with appoint
Cambered surface of anticipating fitting, the disadvantage is that in the poor adhesive force of body surface, it is easy to fall off.
In order to solve the problems, such as the easy to fall off of Stripable paint, WO2016061058A1 discloses a kind of multilayer Stripable paint
System includes to have certain tensile strength and prime coat flexible, and be covered on the polyurethane by UV system of primer coat surface
The coating of formation.However, the drying of UV system needs to solidify, for the substrate with stereochemical structure, solidification is uneven, causes
The ageing-resistant difference of coating, is easy to fall off or dusting.Therefore, UV system is not suitable for the substrate with stereochemical structure, such as automobile table
Face.
US2014087070A1 discloses a kind of multilayer Stripable paint system, includes what is formed by the adhesive of thermal activation
Prime coat, and it is covered on the coating of primer coat surface formed by aqueous polymer systems.Since the adhesive of thermal activation needs
The activation temperature wanted greatly exceeds the operation temperature of automobile industry, and therefore, above-mentioned multilayer Stripable paint system is not suitable for
Automobile industry.
US2012276381A1 discloses a kind of multilayer Stripable paint system, includes what is formed by acrylic resin systems
Prime coat, and it is covered on the coating by aqueous polyurethane System forming of primer coat surface.However, aqueous polyurethane system shape
At coating hardness it is low, be not able to satisfy automotive coatings can polishability requirement.
Therefore, it is intended that developing a kind of substrate suitable for various materials and shape, there is good water resistance, can polish
The Stripable paint system of property and resistance to ag(e)ing.
Summary of the invention
The object of the present invention is to provide a kind of coating compositions, comprising coating composition have good water resistance, can
The coating method and application of polishability and the strippable coating system of resistance to ag(e)ing, coating system, and use the painting Material
The product that system's coating obtains.
Coating composition according to the present invention includes:
One compound containing isocyanate-reactive group；
One polyisocyanates, the isocyanato group functionality of the polyisocyanates are the isocyanate group not less than 2.8
The equivalent proportion of group and the isocyanate-reactive group is 0.5:1-10:1；With
One organic solvent.
According to an aspect of the invention, there is provided the coating composition provided according to the present invention is for protecting substrate surface
Or the purposes of substrate surface coating.
According to another aspect of the present invention, a kind of coating system is provided, includes:
One first chamber, the first chamber include an aqueous polymer dispersions or a solvent based polymer, and described the
One composition is used to form a first coating；With
One second chamber, the second chamber be according to the present invention provided by coating composition, the second chamber
It is used to form a second coating.
According to another aspect of the invention, the coating method of provided coating system according to the present invention is provided, includes
Following steps:
The first chamber is applied to a substrate surface to form the first coating；With
The second chamber is applied to the first coating surface to form the second coating；
The first coating and the second coating form a stripping coating, between the first coating and the second coating
Bond strength be greater than bond strength between the first coating and the substrate surface.
According to another aspect of the invention, the use that provided coating system according to the present invention is used to prepare product is provided
On the way.
In accordance with a further aspect of the present invention, a kind of product is provided, will be mentioned it includes a substrate and according to the present invention
The linkable paint system of confession is in the coating formed on the substrate.
Linkable paint system method of the invention is simple, suitable for the substrate of various materials and shape, formation it is peelable
The initial rippability of coating is good.
The isocyanato group functionality of polyisocyanates in the second chamber of coating system of the invention is not small
In 2.8, the compound containing isocyanate-reactive group is preferably steric hindrance secondary diamine, coating system shape through the invention
At stripping coating have good water resistance, can polishability and resistance to ag(e)ing, stripping coating is using after the several years, still
It can be bonded substrate surface, and be easily peeled off.Steric hindrance secondary diamine in second chamber can also promote stripping coating
Glossiness and richness.
Specific embodiment
The present invention provides a kind of coating composition, includes: a compound containing isocyanate-reactive group；One polyisocyanate cyanogen
Acid esters, the isocyanato group functionality of the polyisocyanates are the isocyanate groups and the isocyanide not less than 2.8
The equivalent proportion of acid esters reactive group is 0.5:1-10:1；With an organic solvent.The present invention also provides the coating compositions
Using, the coating method and application of coating system, coating system comprising the coating composition, and applied using the coating system
The product covered.
Coating composition
Compound containing isocyanate-reactive group
It is preferred that the isocyanate-reactive group degree of functionality of the compound containing isocyanate-reactive group be not less than 2,
Further preferably not less than 2 and no more than 6.5, most preferably 2.
The compound containing isocyanate-reactive group can be following one or more: the compound of amino-contained
With the compound of hydroxyl, the preferably compound of amino-contained.
The compound of the hydroxyl can be following one or more: polyester polyol, polyacrylic polyols, poly-
Ethoxylated polyhydric alcohol and polycarbonate polyol.
The compound of the amino-contained is preferably steric hindrance secondary aliphatic diamines.
The steric hindrance secondary aliphatic diamines preferably have Formulas I structure:
Wherein, R can be (ring) alkylidene with 2-16 carbon atom；R ' can be following one or more: diisopropyl
Ylmethyl, tert-butyl and the non-reacted organic group of isocyanates.
R is preferably (ring) alkylidene that 1-3 carbon atom is replaced by ether oxygen base or tertiary amine groups.
The steric hindrance secondary aliphatic diamines are most preferably polyaspartic ester.
The polyaspartic ester preferably has Formula II structure:
Wherein, X can be the n valence organic group for removing and obtaining after the amido in primary polyamines or polyether polyamine；
R1And R2It can be the non-reacted organic group of isocyanates, R1And R2It can be identical or different；R3、R4And R5It can be with
It is hydrogen or the non-reacted organic group of isocyanates, R3、R4And R5It can be identical or different；
N can be for not less than 2.
X is preferably to remove the bivalent hydrocarbon radical obtained after the amido in primary polyamines or polyether polyamine, and most preferably removal uncle is more
The bivalent hydrocarbon radical obtained after the amido of amine.
R1And R2It is each independently preferably methyl, ethyl or normal-butyl.
R3、R4And R5It is each independently preferably hydrogen.
N is preferably 2-4, and most preferably 2.
The signified non-reacted organic group of isocyanates of the invention is under 150 DEG C or lower temperature, to isocyanic acid
The inert organic group of ester group.
The polyaspartic ester is most preferably following one or more: DesmophenNH1420,
Desmophen1520, Desmophen 1220, Desmophen2872, Desmophen2850, Desmophen1422 and
Desmophen1521 is purchased from Cohan wound polymer (China) Co., Ltd.
The polyaspartic ester, which can be, to be reacted by primary polyamines or polyether polyamine with maleate or fumarate,
It is prepared in known manner.The reaction can carry out under solvent-free or in the presence of suitable solvent.The solvent
It is preferred that those of do not reacted with isocyanates, such as can be selected from following one or more: alcohol, ether, acetic acid esters and ketone.It is described
Alcohol can be methanol, ethyl alcohol, butyl glycol or propyl alcohol.The acetic acid esters can be n-butyl acetate.The ketone can be first
Ethyl ketone dioxane.
The primary polyamines or polyether polyamine meet general formula X-(NH2)n, wherein X can be the primary polyamines of removal or polyether polyamine
In amido after obtained n valence organic group, preferably remove the divalent hydrocarbon obtained after the amido in primary polyamines or polyether polyamine
Base most preferably removes the bivalent hydrocarbon radical obtained after the amido of primary polyamines.
The primary polyamines is preferably following one or more: ethylenediamine, 1,2- diaminopropanes, 1,4- diamino fourth
Alkane, 1,3-diaminopentane, 1,6- diamino hexane, 2,5- diamino -2,5- dimethylhexane, 2,2,4- trimethyl -1,6-
Diamino hexane, 2,4,4- trimethyl -1,6- diamino hexane, 1,11- diamino undecane, 1,12- diamino dodecane, 1,
3- cyclohexanediamine and 1,4- cyclohexanediamine, amino -3,3,5- trimethyl -5- aminomethyl cyclohexane, 2,4- hexahydrotoluene diamines,
2,6- hexahydrotoluene diamines, 2,4'- diamino-dicyclohexyl methyl hydride, 4,4'- diamino-dicyclohexyl methyl hydride, 3,3'- dioxane
Base -4,4'- diamino-dicyclohexyl methane, 2,4,4'- triamido -5- methyldicyclohexyl methane, 2- methyl-1,5- penta 2
Amine, the Asia 1,3- dimethylphenylene diamine and the Asia 1,4- dimethylphenylene diamine.
The primary polyamines is most preferably following one or more: amino -3,3,5- trimethyl -5- amino methyl hexamethylene
Alkane, 2,4'- diamino-dicyclohexyl methyl hydride, 3,3'- dialkyl group -4,4'- diamino-dicyclohexyl methane, 4,4'- diamino -
Dicyclohexyl methyl hydride and 2- methyl-1,5- pentanediamine.
The polyether polyamine preferably has 148-600 number-average molecular weight, the most preferably primaquine with aliphatic bonding
Base.
The maleate or fumarate meet general formula R1OOC-CR3=CR4-COOR2, wherein R1And R2It can be different
The non-reacted organic group of cyanate, R1And R2It can be identical or different；R1And R2It is each independently preferably methyl, second
Base or normal-butyl；R3、R4And R5It can be hydrogen or the non-reacted organic group of isocyanates, R3、R4And R5It can be identical or not
With；R3、R4And R5It is each independently preferably hydrogen；N can be preferably 2-4, most preferably 2 not less than 2.
The maleate or fumarate those of are preferably replaced by following one or more groups: dimethyl
Ester, diethyl ester, dibutyl ester such as di-n-butyl ester, di-sec-butyl ester or di-t-butyl ester, diamyl base ester, two -2- ethyls
Hexyl ester is replaced by methyl at 2- and is replaced at 3- by methyl.
The maleate is more preferably following one or more: dimethyl maleate, diethyl maleate and
Dibutyl maleate, most preferably diethyl maleate.
Polyisocyanates
The isocyanate groups of polyisocyanates of the present invention include free and/or potential free isocyanate group
Group.
The potential free isocyanate groups can be discharged by method well known to those skilled in the art, such as plus
Heat.
The polyisocyanates preferably becomes liquid for liquid or by addition organic solvent at room temperature.
The polyisocyanates may include the isocyanate groups of sealing end.The isocyanate groups pass through and comprising work
Property hydrogen low molecular weight compound reaction realize closing.The low molecular weight compound comprising reactive hydrogen is aliphatic alcohol, rouge
Ring race alcohol, dialkyl amido alcohol, oxime, lactams, acid imide, hydroxy alkyl ester, malonate or acetoacetic ester.
The polyisocyanates can be with hydrophilic radical.
The isocyanato group functionality of the polyisocyanates is preferably not less than 2.8 and no more than 10, further excellent
It is selected as not less than 2.8 and no more than 6.
The polyisocyanates can be following one or more: aliphatic polyisocyante, alicyclic polyisocyanic acid
Ester, araliphatic polyisocyanate and aromatic polyisocyanate, most preferably aliphatic polyisocyante and/or alicyclic polyisocyanate cyanogen
Acid esters.
The aliphatic polyisocyante is preferably hexa-methylene polyisocyanate.
The alicyclic polyisocyanates are preferably isophorone polyisocyanate.
When the polyisocyanates is the mixture of polyisocyanates, the isocyanate groups official of the polyisocyanates
Energy degree is the average functionality of the isocyanate groups of multiple polyisocyanates.
The polyisocyanates can be the prepolymer or addition product of diisocyanate, such as the trimerizing of diisocyanate
Object.The polyisocyanates can also be isocyanuric acid ester, the polyisocyanates of biuret-containing base, the polyisocyanic acid containing urethane groups
Ester, the polyisocyanates of special allophanates containing base, the polyisocyanates containing isocyanuric acid ester and allophanate groups, carbon containing two
The polyisocyanates of imido grpup and the polyisocyanates of the base containing uride.
Isocyanates of the isocyanato group functionality less than 2.8
The coating composition can further include isocyanates of the isocyanato group functionality less than 2.8, described different
Cyanate group degree of functionality is not less than the isocyanate groups average functionality of 2.8 isocyanates and the polyisocyanates
Less than 2.8, preferably not less than 2.8 and be not more than 10, most preferably not less than 2.8 and be not more than 6.
The isocyanato group functionality can be less than 2.8 isocyanates selected from following one or more: six
Methylene polyisocyanate and hexamethylene diisocyanate elastomeric prepolymer.
It is 2 that isocyanates of the isocyanato group functionality less than 2.8, which is preferably isocyanato group functionality,
Isocyanates.
The isocyanates that the isocyanato group functionality is 2 can be selected from following one or more: aliphatic two
Isocyanates, alicyclic diisocyanate, araliphatic diisocyanate and aromatic diisocyanates, most preferably two isocyanide of aliphatic
Acid esters and/or alicyclic diisocyanate.
The aliphatic diisocyanate can be following one or more: hexamethylene diisocyanate (HDI), 2,
2- dimethyl-penten diisocyanate, 2,2,4- trimethyl hexamethylene diisocyanates, butene diisocyanate, 1,3-butadiene-Isosorbide-5-Nitrae-
Diisocyanate, 2,4,4- trimethyls 1, hexamethylene-diisocyanate, bis- (ethyl isocyanate base) carbonic esters, bis- (ethyl isocyanates
Base) ether and lysine methyl ester diisocyanate, most preferably hexamethylene diisocyanate.
The alicyclic diisocyanate can be following one or more: isophorone diisocyanate (IPDI),
Bis- (4,4 '-isocyanato cyclohexyl) methane of isomery or mixture, the 1 or 4 cyclohexylidene of their any content of isomer
Bis- (isocyanatometyl) benzene (XDI) of diisocyanate, 1,3-, 1,3- and/or bis- (2- isocyanate group propyl- 2- the yl)-benzene of Isosorbide-5-Nitrae-
(TMXDI), norbornene alkyl diisocyanate (NBDI), hydrogenation benzene dimethylene diisocyanate (H6XDI), 1,4- cyclohexyl two
Isocyanates (H6PPDI), 1,5-, penta diisocyanate (PDI) and dicyclohexyl methyl hydride diisocyanate, most preferably isophorone
Diisocyanate.
The isocyanates that the isocyanato group functionality is 2 is also possible to the diisocyanate that space is obstructed, such as；
1,1,6,6- tetramethyl-hexamethylene diisocyanate ,-five-methyl diisocyanate of 1,5- dibutyl, p- tetramethyl Asia two
Toluenediisocyanate or m- tetramethyl xylylen diisocyanate.
The isocyanate groups of isocyanates of the isocyanato group functionality of the present invention less than 2.8 include free
And/or potential free isocyanate groups.
The potential free isocyanate groups can be discharged by method well known to those skilled in the art, such as plus
Heat.
Isocyanates of the isocyanato group functionality less than 2.8 is preferably at room temperature for liquid or by being added with
Solvent becomes liquid.
Isocyanates of the isocyanato group functionality less than 2.8 may include the isocyanate groups of sealing end.Institute
State isocyanate groups pass through and comprising reactive hydrogen low molecular weight compound reaction realize closing.It is described low comprising reactive hydrogen
Compound molecular weight is aliphatic alcohol, alicyclic alcohol, dialkyl amido alcohol, oxime, lactams, acid imide, hydroxy alkyl ester, malonic acid
Ester or acetoacetic ester.
Isocyanates of the isocyanato group functionality less than 2.8 can be with hydrophilic radical.
The calculation method of isocyanate groups average functionality of the invention is as follows:
N: the isocyanic acid of the mole of the isocyanate groups of each polyisocyanates or each isocyanato group functionality less than 2.8
The mole of the isocyanate groups of ester
N: the mole of the isocyanates of the mole of each polyisocyanates or each isocyanato group functionality less than 2.8
M: the quality (unit: g) of the isocyanates of quality or isocyanato group functionality less than 2.8 of polyisocyanates
E: the equivalent (unit: g/mol) of the isocyanates of equivalent or isocyanato group functionality less than 2.8 of polyisocyanates
F: the isocyanato group functionality or isocyanato group functionality of polyisocyanates are different less than 2.8 isocyanates
Cyanate group degree of functionality
F: isocyanate groups average functionality
When the coating composition further includes isocyanates of the isocyanato group functionality less than 2.8, the isocyanide
The equivalent proportion of acid esters group and the isocyanate-reactive group is that the isocyanate groups in 0.5:1-10:1 refer to polyisocyanate
The sum of the isocyanate groups of isocyanates of the isocyanate groups of cyanate and isocyanato group functionality less than 2.8.
Organic solvent
The organic solvent can be selected from following one or more: alcohol, ether, acetic acid esters and ketone.
The alcohol can be methanol, ethyl alcohol, butyl glycol or propyl alcohol.
The acetic acid esters can be n-butyl acetate.
The ketone can be methyl ethyl ketone dioxane.
The amount of the organic solvent can be the amount well known to those skilled in the art that can be added.
Additive
The coating composition can further include an additive.The additive is selected from following one or more: pigment
Such as organic pigment, inorganic pigment, metallic pigments or pearlescent pigment, wetting agent, delustering agent, defoaming agent, film forming agent, thickener,
Elasticator (elasticizer), catalyst, UV absorbers and well known to those skilled in the art other can be added to the coating composition
In additive.
The amount of the additive can be the amount well known to those skilled in the art that can be added.
Substrate
The substrate can be artificial stone, timber, imitation wood, marble, terrazzo, ceramics, malthoid, metal, plastics, rubber
Glue, concrete, composite board, paper, leather or glass, preferably metal or glass.
The preferred polyvinyl resin of the plastics or acrylic resin.
The substrate can be preprocessed mistake, and the pretreatment can be polishing or coating.
Coating system
First chamber
Aqueous polymer dispersions of the invention are to be dispersed in water polymer.
Solvent based polymer of the invention is that polymer is dispersed in obtained in organic solvent.
Aqueous polymer dispersions and/or solvent based polymer in the first chamber can be those skilled in the art
Those of stripping coating can be formed known to member.
The first chamber preferably comprises an aqueous polymer dispersions.
The aqueous polymer dispersions can be following one or more: aqueous acrylic emulsion, aqueous polyurethane
Dispersion, watersoluble polyvinyl alcohol dispersion, aqueous polyethers dispersion, waterborne polyester dispersion and aqueous aliphatic ester dispersion.
The solvent based polymer can be following one or more: styrene-butadiene latex and polystyrene third
Acid esters.
The aqueous polymer dispersions are preferably aqueous polyurethane dispersion.
Polyurethane of the invention refers to polyurethane-urea and/or polyurethane-polyurea and/or polyureas.
The content of the aqueous polyurethane dispersion is preferably not less than 50 weight %, is most preferably not less than 85 weight %,
By the amount of the first chamber be 100 weight % in terms of.
The solid content of the aqueous polyurethane dispersion is preferably 10-70 weight %, further preferably 30-65 weight
Measure %, most preferably 30-50 weight %, by the amount of the aqueous polyurethane dispersion be 100 weight % in terms of.
The aqueous polyurethane dispersion, which can be, optional can form those of coating in the substrate surface.
The aqueous polyurethane dispersion is more preferably anionic and/or non-ion aqueous polyurethane dispersion
Body, most preferably anion-type water-thinned polyurethane dispersion.
The anion-type water-thinned polyurethane dispersion is preferably aliphatic anion-type water-thinned polyurethane dispersion.
The first chamber can further include an additive.The additive can be selected from following one kind or
It is a variety of: pigment such as organic pigment, inorganic pigment, metallic pigments or pearlescent pigment, wetting agent, delustering agent, defoaming agent, film forming
Agent, thickener, levelling agent, light aging agent, cosolvent, neutralizer and well known to those skilled in the art other can be added to institute
State the additive in first chamber.
The amount of the additive can be the amount well known to those skilled in the art that can be added.
Third composition
The coating system can further include a third composition, and the third composition may include a waterborne polymeric
Dispersion or a solvent based polymer, the third composition is different from the first chamber, the third composition
It is used to form a third coating.
The third composition preferably comprises an aqueous polymer dispersions.
The aqueous polymer dispersions can be following one or more: aqueous acrylic emulsion, aqueous polyurethane
Dispersion, watersoluble polyvinyl alcohol dispersion, aqueous polyethers dispersion, waterborne polyester dispersion and aqueous aliphatic ester dispersion.
The solvent based polymer can be following one or more: styrene-butadiene latex and polystyrene third
Acid esters.
The third composition can further include an additive.The additive can be selected from following one kind or
It is a variety of: pigment such as organic pigment, inorganic pigment, metallic pigments or pearlescent pigment, wetting agent, delustering agent, defoaming agent, film forming
Agent, thickener and well known to those skilled in the art other can be added to the additive in the third composition, preferably
Organic pigment, inorganic pigment, metallic pigments or pearlescent pigment.
The amount of the additive can be the amount well known to those skilled in the art that can be added.
Coating method
The substrate can be artificial stone, timber, imitation wood, marble, terrazzo, ceramics, malthoid, metal, plastics, rubber
Glue, concrete, composite board, paper, leather or glass, preferably metal or glass.
The plastics are preferably polyvinyl resin or acrylic resin.
The substrate can be preprocessed mistake, and the pretreatment can be polishing or coating.
The xenon lamp aging time of the stripping coating can be preferably not lower than 500 hours not less than 200 hours,
Most preferably it is not less than 2000 hours, is measured according to standard ISO11341:2004(GB/T1865-2009).
Apply
The application can be the method being well known to those skilled in the art, such as blade coating, brushing, roller coating, spraying or showering.
First coating
The first coating is preferably strippable, and the thickness of the first coating is preferably 10 μm -300 μm, most preferably
20 µm-80 µm。
The first coating can be single-layer or multi-layer.The first coating of the multilayer is by repeatedly applying described
What one composition was formed.
Second coating
The thickness of the second coating is preferably 10 μm -300 μm, and most preferably 20 μm -80 μm.
The second chamber preferably applies after the first coating is dry.
The second chamber can be to be obtained in the following way: by the change containing isocyanate-reactive group
Close the isocyanates of object, polyisocyanates, organic solvent, optional additive and optional isocyanate functionality less than 2.8
It is uniformly mixed.
The second chamber can also be obtains in the following way: by described containing isocyanate-reactive group
Compound, optional organic solvent and optional additive, which are uniformly mixed, to be obtained containing the compound containing isocyanate-reactive group
Mixture, the polyisocyanates, optional organic solvent, optional additive and optional isocyanate functionality is small
Isocyanates in 2.8 is uniformly mixed and obtains the mixture containing isocyanate ester compound, then will contain containing isocyanate-reactive
The mixture of the compound of group, the mixture containing isocyanate ester compound and optional organic solvent are uniformly mixed, described
A step is added organic solvent at least in.
The second coating can be single-layer or multi-layer.The second coating of the multilayer is by repeatedly applying described
What two compositions were formed.
Third coating
A third composition can further be applied between the first coating and second coating to form a third coating, institute
It states first coating, second coating and third coating and forms a stripping coating, the first coating, second coating and third coating
Between bond strength be greater than bond strength between the first coating and the substrate surface.
Steps are as follows for specific application:
The third composition is applied to the first coating surface to form the third coating；With
The second chamber is applied to the third coating surface to form the second coating.
The thickness of the third coating is preferably 10 μm -300 μm, and most preferably 10 μm -40 μm.
The third coating is preferably used to decorate the substrate.
The third composition preferably applies after the first coating is dry.The second chamber is preferably described
Apply after Three coating is dry.
The third coating can be single-layer or multi-layer.The third coating of the multilayer is by repeatedly applying described
What three compositions were formed.
Bond strength between the third coating and the first coating is preferably greater than the first coating and the base
Bond strength between material surface；Intensity between the third coating and the second coating is preferably greater than the first coating
Bond strength between the substrate surface.
The first coating can be used as prime coat layer, also referred to as priming coat, enable the stripping coating from substrate table
Face removes, and coating can be previously applied in the substrate surface.The third coating can be colored paint coating or heat resistant coating.Institute
Stating second coating can be protective layer, for protecting the first coating and optional third coating to protect for a long time in substrate surface
It stays, and still there is good rippability, water resistance and can polishability.
Product
The product can be window, mirror, furniture, bicycle, automobile, road sign, bridge, books or chest, most preferably vapour
Vehicle.
Embodiment
Unless otherwise defined, all technical and scientific terms used herein have those skilled in the art of the invention
Normally understood identical meaning.When the definition of term in this specification and the normally understood meaning of those skilled in the art of the invention
When justice is contradictory, it is subject to definition described herein.
Unless otherwise stated, amount, the reaction condition etc. of the expression ingredient used in the specification and in the claims
All numerical value be understood to modify by term " about ".Therefore, unless the contrary indication, the numerical value ginseng otherwise illustrated herein
The approximation that number is the required performance that can obtain as needed to change.
"and/or" used herein refers to one of mentioned element or whole.
" comprising " and "comprising" used herein cover the situation of only mentioned element and in addition to mentioned elements
There are other situations for not referring to element.
All percentages are weight percentage in the present invention, unless otherwise specified.
Analysis measurement of the invention all carries out at 23 ± 2 DEG C, unless otherwise specified.
The test method of water resistance, will at 23 ± 2 DEG C of temperature and 50% ± 5% humidity referring to GB/T1733-1993
The substrate of coating steeps 6 hours in water, and substrate is taken out from water, dries water, and room temperature 10 minutes, if coating does not rise
Bubble, non-whitening, then it is assumed that coating passes through water resistance test；, whereas if occurring blistering or whiten, then it is assumed that cannot be by water-fast
Property test.
Can polishability measuring method: gently polished coating with the sand paper of 2000 mesh, and can be with if coating not scab paper
With polishing machine remove coating surface polishing trace, it is considered that coating can polishability it is good, otherwise it is assumed that can polishability it is poor.
The initial fissility of coating: if dry coating can completely be removed in the form of a film from substrate surface
Or completely removed in the form of the film of fragmentation, and coating does not leave apparent trace in substrate surface, it is considered that coating
Rippability it is good, otherwise it is assumed that rippability is poor.
The rippability of coating after xenon lamp aging: by the stripping coating xenon lamp aging after drying, method is referring to mark
Quasi- ISO11341:2004(GB/T1865-2009), if the coating after aging can be complete in the form of a film from substrate surface
Whole removing is completely removed in the form of the film of fragmentation, and coating does not leave apparent trace in substrate surface, then
Think that the rippability of coating is good, otherwise it is assumed that rippability is poor.
The solid content of aqueous polyurethane dispersion using Mettler Toledo company HS153 moisture teller according to
DIN-EN ISO 3251 is carried out.
Hydroxy radical content is measured according to ASTM D4274.
Amine groups content is measured according to AFAM 2011-06054.
Isocyanate groups (NCO) content presses stereometry according to DIN-EN ISO 11909, and the data of measurement include trip
From and potential free NCO content.
Isocyanate functionality is measured according to GPC.
Raw materials and reagents
Bayhydrol UH2342: aliphatic anion-type water-thinned polyurethane dispersion, solid content is 35 weight %, as the
Aqueous polyurethane dispersion in one composition uses, and is purchased from German Cohan wound limited liability company.
Bayhydrol UH2648/1: the aliphatic anion-type water-thinned polyurethane dispersion based on polyester-polycarbonate,
Solid content 35 is weight %, is used as the aqueous polyurethane dispersion in first chamber, and German Cohan wound share is purchased from
Co., Ltd.
Bayhydrol UH2557: aliphatic anion-type water-thinned polyurethane dispersion, solid content are 37 weight %, are made
It is used for the aqueous polyurethane dispersion in first chamber, is purchased from German Cohan wound limited liability company.
Impranil DLC/F: the aliphatic anion-type water-thinned polyurethane dispersion based on polycarbonate, solid content
It for 35 weight %, is used as the aqueous polyurethane dispersion in first chamber, is purchased from the German Cohan wound limited public affairs of share
Department.
Desmophen NH1420: polyaspartic ester, amine groups degree of functionality are 2.0, and amine groups are worked as 279
Amount, uses as the compound containing isocyanate-reactive group in second chamber, and being purchased from German Cohan wound share has
Limit company.
Desmophen NH1520: polyaspartic ester, amine groups degree of functionality are 2.0, and amine groups are worked as 290
Amount, uses as the compound containing isocyanate-reactive group in second chamber, and being purchased from German Cohan wound share has
Limit company.
Desmophen 670BA: polyester polyol, hydroxyl group degree of functionality are 3.1, and hydroxyl group content is 4.3 weights
% is measured, hydroxyl group is 485 equivalents, is used as the compound containing isocyanate-reactive group in second chamber, commercially available
Limited liability company is created from German Cohan.
Satelux DA 870BA: polyacrylic polyols, hydroxyl group degree of functionality are 6.2, hydroxyl group content 4.2
Weight %, hydroxyl group are 575 equivalents, are used as the compound containing isocyanate-reactive group in second chamber, can
Purchased from Zhan Xin resin (Shanghai) Co., Ltd..
PPG600: polyether polyol, hydroxyl group degree of functionality are 2.0,6.3 weight % of hydroxyl group content, as second group
The compound containing isocyanate-reactive group closed in object uses, and is purchased from Ke Lingsi reagent.
Desmophen VPLS 2328: polyester polyol, hydroxyl group degree of functionality are 2.0,8.0 weight of hydroxyl group content
% is measured, is used as the compound containing isocyanate-reactive group in second chamber, being purchased from German Cohan wound share has
Limit company.
Desmophen C1200: polycarbonate glycol, hydroxyl group degree of functionality be 2,1.7 weight % of hydroxyl group content,
It is used as the compound containing isocyanate-reactive group in second chamber, is purchased from the German Cohan wound limited public affairs of share
Department.
Desmodur N3580BA: hexa-methylene polyisocyanate, isocyanato group functionality 5.5, isocyanate group
15.4 weight % of mass contg, uses as the polyisocyanates in second chamber, is purchased from the German Cohan wound limited public affairs of share
Department.
Desmodur N3790BA: hexa-methylene polyisocyanate, isocyanato group functionality 3.9, isocyanate group
17.8 weight % of mass contg, uses as the polyisocyanates in second chamber, is purchased from the German Cohan wound limited public affairs of share
Department.
Desmodur N3390BA: hexa-methylene polyisocyanate, isocyanato group functionality 3.5, isocyanate group
19.6 weight % of mass contg, uses as the polyisocyanates in second chamber, is purchased from the German Cohan wound limited public affairs of share
Department.
Desmodur Z4470BA: isophorone polyisocyanate, isocyanato group functionality 3.5, isocyanate group
11.9 weight % of mass contg, uses as the polyisocyanates in second chamber, is purchased from the German Cohan wound limited public affairs of share
Department.
Desmodur N3400: hexa-methylene polyisocyanate, isocyanato group functionality 2.5, isocyanate groups
21.8 weight % of content, the isocyanates as the isocyanate functionality in second chamber less than 2.8 use, and are purchased from moral
Limited liability company is created in state's Cohan.
Desmodur E2863XP: hexamethylene diisocyanate elastomeric prepolymer, isocyanato group functionality 2.2,
11.0 weight % of isocyanate content, the isocyanates as the isocyanate functionality in second chamber less than 2.8 make
With being purchased from German Cohan wound limited liability company.
Butyl acetate: it is used as the organic solvent in second chamber, is purchased from DOW Chemical.
Positive heptanone: it is used as the organic solvent in second chamber, is purchased from DOW Chemical.
BYK346: organic silicon surfactant, wetting agent are used as the additive in first chamber, are purchased from
BYK。
BYK3560: the surfactant without organosilicon and fluorine, levelling agent make as the additive in first chamber
With being purchased from BYK.
BYK093: organic silicon defoamer, defoaming agent use as the additive in first chamber, are purchased from BYK.
Tinuvin5151: bis- (1,2,2,6,6--4-piperidyl of pentamethyl) sebacic acid esters, light aging agent, as first group
The additive closed in object uses, and is purchased from BASF.
The aqueous solution of the dimethylaminoethanol of DMEA:10%, neutralizer are used as the additive in first chamber,
Be purchased from U.S.'s hamming this.
DPM: dipropylene glycol methyl ether, cosolvent use as the additive in first chamber, are purchased from DOW Chemical.
Tinuvin 1130: benzotriazole UV absorbers, UV absorbers, as in second chamber
Additive uses, and is purchased from BASF.
Tinuvin292: liquid hindered amine light stabilizer, UV absorbers make as the additive in second chamber
With being purchased from BASF.
BYK388: fluorine richness polyacrylate solution levelling agent, wetting agent make as the additive in second chamber
With being purchased from BYK.
BYK358: polyacrylate flow agent, wetting agent are used as the additive in second chamber, are purchased from
BYK。
Impranil HS62: thermoplastic polyurethane, elasticator (elasticizer), as in second chamber can additive use, it is commercially available
Limited liability company is created from German Cohan.
Desmocap 12: blocked polyurethane, elasticator (elasticizer), as in second chamber can additive use, be purchased from
Limited liability company is created in German Cohan.
TABCO T12: organotin catalysts are used as the additive in second chamber, are purchased from aerochemistry company.
AK5: the aqueous one-component coating based on polyurethane and acrylate is purchased from Italian Liwrea.
P998-8987: aqueous background color coating uses as third composition, is purchased from PPG.
C-AM15: solvent type background color coating is used as third composition, is purchased from Guangzhou and is won pool chemistry.
AM5: the high thick black color masterbatch of solvent type is purchased from Ai Shi get.
AK100: two-component solvent type resin is purchased from Ai Shi get.
AK260: solvent type large arch dam curing agent is purchased from Ai Shi get.
AB385: solvent type diluent is purchased from Ai Shi get.
Steel plate with electrophoretic primer: it is great to be purchased from Guangzhou for steel plate long generous respectively 30 centimetres, 20 centimetres, 0.1 centimetre
Great trade Co., Ltd.
Testing substrates
With spray gun (SATA HVLP4000, the be purchased from Germany Sa Ta) spray paint on the steel plate with electrophoretic primer, finishing coat by
25.3g AM5,40g AK100,21.7g AK260 and 13.0g AB385 are mixed to get, and the coating of black are formed, in temperature 60
It is toasted 60 minutes under the conditions of DEG C, then maintenance obtains test base for 7 days under conditions of temperature is 23 ± 2 DEG C and humidity is 50% ± 5%
Material, the thickness control of coating is at 30 μm -40 μm.
The preparation method of the stripping coating of 1-17 of the embodiment of the present invention
Embodiment 1-15(coating system does not include third composition)
The each component of first chamber as shown in Table 1 is added to while stirring in a container, is kept with 1500 revs/min
Speed stirs 20 minutes, after stopping stirring, filtering, placing 24 hours, with spray gun (SATA HVLP4000, purchased from German Sa
Tower) testing substrates surface formation first coating is applied it to, it is toasted 20 minutes at 60 DEG C or in 23 ± 2 DEG C of temperature and humidity
Dry first coating under conditions of 50% ± 5%, the first coating after drying is with a thickness of 20 μm -30 μm.
According to amount shown in table 2, uniformly mixing each component is respectively obtained containing the compound containing isocyanate-reactive group
Mixture and mixture containing isocyanate ester compound, by containing the compound containing isocyanate-reactive group mixture and
Mixture containing isocyanate ester compound is uniformly mixed and obtains second chamber, and with spray gun, (SATA HVLP4000 is purchased from moral
State Sa Ta) second chamber is applied to first coating surface to form second coating, in temperature be 23 ± 2 DEG C and humidity is
Dry second coating is obtained after 50% ± 5% lower drying 24 hours, the second coating after drying is with a thickness of 20 μm -30 μm, and first
Coating and second coating, which combine, forms stripping coating.
Embodiment 16-17(coating system further includes third composition)
The each component of first chamber as shown in Table 1 is added to while stirring in a container, is kept with 1500 revs/min
Speed stirs 20 minutes, after stopping stirring, filtering, placing 24 hours, with spray gun (SATA HVLP4000, purchased from German Sa
Tower) testing substrates surface formation first coating is applied it to, it is toasted 20 minutes at 60 DEG C or for 23 ± 2 DEG C and wet in temperature
Degree is 50% ± 5% lower dry first coating, and the first coating after drying is with a thickness of 20 μm -30 μm.
Third composition as shown in table 3 is applied to the first painting with spray gun (SATA HVLP4000 is purchased from Germany Sa Ta)
Layer surface is toasted 20 minutes or the drying in the case where temperature is 23 ± 2 DEG C and humidity is 50% ± 5% with forming third coating at 60 DEG C
Third coating, the third coating layer thickness after drying are 20 μm -30 μm.
According to amount shown in table 2, uniformly mixing each component is respectively obtained containing the compound containing isocyanate-reactive group
Mixture and mixture containing isocyanate ester compound, by containing the compound containing isocyanate-reactive group mixture and
Mixture containing isocyanate ester compound is uniformly mixed and obtains second chamber, and with spray gun, (SATA HVLP4000 is purchased from moral
State Sa Ta) second chamber is applied to third coating surface to form second coating, in temperature be 23 ± 2 DEG C and humidity is
Dry second coating is obtained after 50% ± 5% lower drying 24 hours, the second coating after drying is with a thickness of 20 μm -30 μm, and first
Coating, third coating and second coating combine and form stripping coating.
The preparation method of the comparison coating of comparative example 1-5
Comparative example 1-3
The each component of first chamber as shown in Table 1 is added to while stirring in a container, is kept with 1500 revs/min
Speed stirs 20 minutes, after stopping stirring, filtering, placing 24 hours, with spray gun (SATA HVLP4000, purchased from German Sa
Tower) apply it to testing substrates surface to form first coating, toasted 20 minutes at 60 DEG C or temperature be 23 ± 2 DEG C and
Humidity is 50% ± 5% lower dry first coating, and the first coating after drying is with a thickness of 20 μm -30 μm.
Comparing amount shown in second chamber according to table 2, uniformly mixing each component is respectively obtained containing containing isocyanate-reactive
The control mixture of the compound of group and control mixture containing isocyanate ester compound, will contain containing isocyanate-reactive
The control mixture of the compound of group and control mixture containing isocyanate ester compound, which are uniformly mixed, obtains comparison second
Composition, with spray gun (SATA HVLP4000, be purchased from Germany Sa Ta) will compare second chamber be applied to first coating surface with
Be contrasted second coating, temperature be 23 ± 2 DEG C and humidity be 50% ± 5% lower dry 24 hours after obtain the comparison the of drying
Two coatings, with a thickness of 20 μm -30 μm, first coating and comparison second coating are combined and are contrasted the comparison second coating after drying
Stripping coating.
Comparative example 4-5
AK5 or each component of first chamber as shown in Table 1 are added to while stirring in a container, kept with 1500
Rev/min speed stir 20 minutes, stop stirring, filtering, place 24 hours after, with spray gun, (SATA HVLP4000, is purchased from
German Sa Ta) apply it to testing substrates surface to be contrasted coating, toasted 20 minutes at 60 DEG C or temperature be 23
± 2 DEG C are 50% ± 5% lower dry comparison coating with humidity, and the comparison coating layer thickness after drying is 20 μm -30 μm.
The composition and content (unit: gram) of each first chamber of table 1
| First chamber 1 | First chamber 2 | First chamber 3 | |
| Bayhydrol UH2342 | 75 | 75 | |
| Bayhydrol UH2557 | 75 | ||
| Impranil DLC/F | 15 | ||
| Bayhydrol UH2648/1 | 15 | 15 | |
| DPM | 6 | 6 | 6 |
| BYK 346 | 0.5 | 0.5 | 0.5 |
| BYK 3560 | 0.5 | 0.5 | 0.5 |
| BYK 093 | 0.5 | 0.5 | 0.5 |
| Tinuin 5151 | 1.0 | 1.0 | 1.0 |
| DMEA | 1.5 | 1.5 | 1.5 |
The calculation method of the equivalent proportion of isocyanate groups and isocyanate-reactive group, by taking second chamber 1 as an example:
The mole of the isocyanate groups of second chamber 1 are as follows:
Equivalent=42/(17.8% of the isocyanate groups of Desmodur N3790BA)=236,
Equivalent=42/(11.9% of the isocyanate groups of Desmodur Z4470BA)=353,
Equivalent=42/(11% of the isocyanate groups of Desmodur E2863XP)=382,
Mole=21/236+16.4/353+16.4/382=0.1784 of the isocyanate groups of second chamber 1；
Mole=45/279+5/290=0.1785 of the isocyanate-reactive group of second chamber 1；
The isocyanate groups of second chamber 1 and equivalent proportion=0.1784/0.1785=1 of isocyanate-reactive group.
The calculation method of isocyanate groups average functionality is averaged function with the isocyanate groups of second chamber 1
For degree:
Mole=21.0/236=0.089 of the isocyanate groups of Desmodur N3790BA；
Mole=16.4/353=0.046 of the isocyanate groups of Desmodur Z4470BA；
Mole=16.4/382=0.043 of the isocyanate groups of Desmodur E2863XP；
Mole=21.0/(236*3.9 of Desmodur N3790BA)=0.023；
Mole=16.4/(353*3.5 of Desmodur Z4470BA)=0.013；
Mole=16.4/(382*2.2 of Desmodur E2863XP)=0.020；
The isocyanate groups average functionality of second chamber 1=(0.089+0.046+0.043)/(0.023+0.013+
0.02)=3.2.
The coating system of the embodiment of the present invention 1-17 and comparative example 1-5 are listed in table 3.
The coating system of table 3 the embodiment of the present invention 1-17 and comparative example 1-5
| First chamber | Second chamber | Third composition | |
| Embodiment 1 | First chamber 1 | Second chamber 1 | |
| Embodiment 2 | First chamber 1 | Second chamber 2 | |
| Embodiment 3 | First chamber 1 | Second chamber 3 | |
| Embodiment 4 | First chamber 1 | Second chamber 4 | |
| Embodiment 5 | First chamber 1 | Second chamber 5 | |
| Embodiment 6 | First chamber 1 | Second chamber 6 | |
| Embodiment 7 | First chamber 1 | Second chamber 7 | |
| Embodiment 8 | First chamber 1 | Second chamber 8 | |
| Embodiment 9 | First chamber 2 | Second chamber 9 | |
| Embodiment 10 | First chamber 2 | Second chamber 10 | |
| Embodiment 11 | First chamber 3 | Second chamber 11 | |
| Embodiment 12 | First chamber 1 | Second chamber 12 | |
| Embodiment 13 | First chamber 1 | Second chamber 13 | |
| Embodiment 14 | First chamber 1 | Second chamber 14 | |
| Embodiment 15 | First chamber 1 | Second chamber 15 | |
| Embodiment 16 | First chamber 1 | Second chamber 1 | P998-8987 |
| Embodiment 17 | First chamber 1 | Second chamber 1 | C-AM15 |
| Comparative example 1 | First chamber 1 | Second chamber 16 | |
| Comparative example 2 | First chamber 1 | Second chamber 17 | |
| Comparative example 3 | First chamber 1 | Second chamber 18 | |
| Comparative example 4 | AK5 | ||
| Comparative example 5 | First chamber 1 |
Performance test
The comparison coating system of stripping coating and comparative example 1-5 that the coating system of the embodiment of the present invention 1-17 is formed is formed
The performance test data of comparison coating be listed in table 4.
The comparison of stripping coating and comparative example 1-5 that the coating system of 4 1-17 of the embodiment of the present invention of table is formed applies Material
The performance for the comparison coating that system is formed compares
| Water resistance | It can polishability | Initial rippability | Rippability after xenon lamp aging 200 hours | Rippability after xenon lamp aging 500 hours | Rippability after xenon lamp aging 2000 hours | |
| Embodiment 1 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 2 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 3 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 4 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 5 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 6 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 7 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 8 | It is good | It is good | Good (easy fracture) | Good (easy fracture) | Good (easy fracture) | Good (easy fracture) |
| Embodiment 9 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 10 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 11 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 12 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 13 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 14 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 15 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 16 | It is good | It is good | It is good | It is good | It is good | It is good |
| Embodiment 17 | It is good | It is good | It is good | It is good | It is good | It is good |
| Comparative example 1 | Poor (whitening) | It is good | It is good | It is good | It is good | It is good |
| Comparative example 2 | Poor (whitening) | It is good | It is good | It is good | It is good | It is good |
| Comparative example 3 | Poor (whitening) | Poor (tacky) | It is good | It is good | It is good | It is good |
| Comparative example 4 | Poor (dissolving) | Poor (tacky) | It is good | Poor (not peelable) | Poor (not peelable) | Poor (not peelable) |
| Comparative example 5 | Poor (whitening) | Poor (tacky) | It is good | It is good | Poor (not peelable) | Poor (not peelable) |
From table 4, it can be seen that the water resistance for the stripping coating that embodiment 1-17 is formed, can polishability, initial peelable
Property and rippability after aging 2000 hours are all good.Comparing embodiment 1 and embodiment 8 are made using the compound of amino-contained
The coating performance obtained for the compound containing isocyanate-reactive group better than uses the compound of hydroxyl as containing different
The coating that the compound of polyisocyanate reactant group obtains.Comparing embodiment 1 and comparative example 1,2 and 3, pair of comparative example 1,2 and 3
Isocyanate groups average functionality than the isocyanate ester compound of second chamber is below 2.8, compares coating system
The comparison stripping coating of formation cannot meet simultaneously coating water resistance, can polishability, initial rippability and aging 2000
Rippability requirement after hour.Comparative example 4 and comparative example 5 are all the aqueous peelable paints of single layer, the comparison coating that they are formed
Water resistance, can rippability after polishability and aging it is all poor, be not able to satisfy the demand in market.
Those skilled in the art is apparent from, and the present invention is not limited only to detail above-mentioned, and is not departing from the present invention
Spirit or key property under the premise of, the present invention it is implementable be other particular forms.Therefore it should all be incited somebody to action for any angle
The embodiment be regarded as it is illustrative and not restrictive, thus by claims rather than preceding description points out model of the invention
It encloses；And therefore any change, as long as in its meaning and scope for belonging to claim equivalent, should all be regarded as belonging to the present invention.
Claims (17)
1. a kind of coating composition, includes:
One compound containing isocyanate-reactive group, the isocyanide of the preferably described compound containing isocyanate-reactive group
Acid esters reactive group degree of functionality is not less than 2；
One polyisocyanates, the isocyanato group functionality of the polyisocyanates are the isocyanate group not less than 2.8
The equivalent proportion of group and the isocyanate-reactive group is 0.5:1-10:1；With
One organic solvent.
2. coating composition as described in claim 1, which is characterized in that the compound containing isocyanate-reactive group
It is following one or more: the compound of amino-contained and the compound of hydroxyl, the preferably compound of amino-contained.
3. coating composition as claimed in claim 2, which is characterized in that the compound of the amino-contained is steric hindrance fat
Race's secondary diamine, preferably with the steric hindrance secondary aliphatic diamines of Formulas I structure:
Wherein, R is with 2-16 carbon atom (ring) alkylidene, and preferably 1-3 carbon atom is taken by ether oxygen base or tertiary amine groups
(ring) alkylidene in generation；R ' is following one or more: diisopropyl methyl, tert-butyl and isocyanates is non-reacted has
Machine group.
4. coating composition as claimed in claim 3, which is characterized in that the steric hindrance aliphatic with Formulas I structure
Secondary diamine is polyaspartic ester, preferably with the polyaspartic ester of Formula II structure:
Wherein, X is the n valence organic group obtained after the amido in the primary polyamines of removal or polyether polyamine, the preferably primary polyamines of removal
Or the bivalent hydrocarbon radical obtained after the amido in polyether polyamine；
R1 And R2 It is the non-reacted organic group of identical or different isocyanates, R1And R2Each independently be preferably methyl,
Ethyl or normal-butyl；
R3、R4 And R5It is the identical or different non-reacted organic group of hydrogen or isocyanates, R3、R4And R5It is excellent each independently
It is selected as hydrogen；
N is preferably 2-4, most preferably 2 not less than 2.
5. coating composition as described in claim 1, which is characterized in that the isocyanate groups function of the polyisocyanates
Degree is not less than 2.8 and no more than 10, to be most preferably not less than 2.8 and no more than 6.
6. coating composition as described in claim 1 further includes isocyanide of the isocyanato group functionality less than 2.8
The isocyanate groups average functionality of acid esters, the isocyanates and the polyisocyanates is not less than 2.8.
7. any one of -6 coating composition is used to protect the purposes of substrate surface or substrate surface coating according to claim 1.
8. a kind of coating system, includes:
One first chamber, the first chamber include an aqueous polymer dispersions or a solvent based polymer, and described the
One composition is used to form a first coating；With
One second chamber, the second chamber are according to claim 1 any one of -6 coating compositions, described second group
It closes object and is used to form a second coating.
9. coating system as claimed in claim 8, further includes a third composition, the third composition includes a water
Property polymeric dispersions or a solvent based polymer, the third composition is different from the first chamber, and described
Three compositions are used to form a third coating.
10. the coating method of the coating system such as any one of claim 8-9 comprising the steps of:
The first chamber is applied to a substrate surface to form the first coating；With
The second chamber is applied to the first coating surface to form the second coating；
The first coating and the second coating form a stripping coating, between the first coating and the second coating
Bond strength be greater than bond strength between the first coating and the substrate surface.
11. coating method as claimed in claim 10, which is characterized in that into one between the first coating and second coating
Step applies a third composition to form the third coating, and the first coating, second coating and third coating form one can
Release coating, bond strength between the first coating, second coating and third coating are greater than the first coating and described
Bond strength between substrate surface.
12. coating method as described in claim 10 or 11, which is characterized in that the substrate is artificial stone, timber, sham wood
Material, marble, terrazzo, ceramics, malthoid, metal, plastics, rubber, concrete, composite board, paper, leather or glass, it is excellent
Choosing is metal or glass.
13. coating method as claimed in claim 12, which is characterized in that the substrate is preprocessed mistake, the pre- place
Reason is preferably polished or coating.
14. coating method as described in claim 10 or 11, which is characterized in that the xenon lamp aging time of the stripping coating
Preferably not lower than 500 hours, to be most preferably not less than 2000 hours not less than 200 hours, according to standard ISO11341:
2004(GB/T1865-2009) measure.
15. being used to prepare the purposes of product according to the coating system of any one of claim 8-9.
16. a kind of product, comprising a substrate and by according to the linkable paint system of any one of claim 8-9 in the substrate
The coating of upper formation.
17. product as claimed in claim 16, which is characterized in that the product is window, mirror, furniture, bicycle, vapour
Vehicle, road sign, bridge, books or chest, preferably automobile.
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| CN201710914082.4A CN109836980A (en) | 2017-09-30 | 2017-09-30 | A kind of coating composition and the coating system comprising it |
| PCT/EP2018/076052 WO2019063583A1 (en) | 2017-09-30 | 2018-09-26 | A coating system |
| CN201880063800.4A CN111108134B (en) | 2017-09-30 | 2018-09-26 | Coating system |
| EP18773195.5A EP3688051B1 (en) | 2017-09-30 | 2018-09-26 | A coating system |
| US16/649,262 US20200216682A1 (en) | 2017-09-30 | 2018-09-26 | A coating system |
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| CN116113651A (en) * | 2020-09-07 | 2023-05-12 | 美凯威奇兄弟有限责任两合公司 | Coating system and method for coating large parts |
| CN112708338A (en) * | 2021-01-15 | 2021-04-27 | 江阴市荣新塑化有限公司 | Water-based soft-touch elastic finish paint for automotive interior and preparation method thereof |
| CN114773973A (en) * | 2022-03-25 | 2022-07-22 | 哈尔滨工程大学 | Temporary protective coating applied to ocean engineering equipment transportation and preparation method |
| CN116875160A (en) * | 2023-08-05 | 2023-10-13 | 中海油常州涂料化工研究院有限公司 | Pearly-lustre paint for aircraft skin and preparation method thereof |
| CN118406428A (en) * | 2024-07-02 | 2024-07-30 | 常州市振邦化工制造有限公司 | Wear-resistant water-based finish paint applied to coil steel and preparation method thereof |
| CN118406428B (en) * | 2024-07-02 | 2024-09-27 | 常州市振邦化工制造有限公司 | Wear-resistant water-based finish paint applied to coil steel and preparation method thereof |
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