CN101613558B - Bi-component acrylic resin coating - Google Patents
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- CN101613558B CN101613558B CN2008101261681A CN200810126168A CN101613558B CN 101613558 B CN101613558 B CN 101613558B CN 2008101261681 A CN2008101261681 A CN 2008101261681A CN 200810126168 A CN200810126168 A CN 200810126168A CN 101613558 B CN101613558 B CN 101613558B
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Abstract
The invention provides a bi-component acrylic resin coating containing a gloss oil component and a curing gent component, wherein the gloss oil component contains resin, drier, a flatting agent and an organic solvent. The bi-component acrylic resin coating is characterized in that the resin is a mixture of first resin and second resin. The invention obviously enhances the curing speed of the obtained coating and enables the coating to reach the rigidity sufficiently meeting the requirements of burnishing and polishing under lower baking temperature by using the first resin and the second resin.
Description
Technical field
The present invention relates to a kind of coating, relate in particular to a kind of bi-component acrylic resin coating.
Background technology
At present, the car repair finish paint mainly contains pyroxylin(e)finish, alkyd paint and acrylic resin paint.
The advantage of pyroxylin(e)finish is rapidly dry, and shortcoming is that spraying back lacquer painting is more crisp and weather resistance is poor.
The advantage of alkyd paint is that weather resistance is good, and shortcoming is that humidity resistance is poor, and drying is also slower.
The excellent combination property of acrylic resin paint; But because the thermoplastic acrylic resin molecular weight is high, the dissolution with solvents difficulty need be diluted with many solvents; Thereby the solids content in its when construction lower (below the 20 weight %); Need repeatedly to spray just can reach certain thickness, influenced operating efficiency, and decorative effect is not ideal enough.
Thereby; People have developed the solids content when bi-component acrylic resin paint improves its each construction; For example; CN1532244A discloses a kind of flash of light polyurethane coating; This coating is made up of two kinds of components of first, second, and wherein the first component comprises the vinyl resin of 15-20 weight %, the high Hydroxylated acrylic resin 1151 of 30-50 weight %, the pimelinketone of 5-10 weight %, the YLENE of 10-15 weight %, the N-BUTYL ACETATE of 10-18 weight %, the S100 of 3-5 weight %, the BYK358 flow agent of 0.1-0.5 weight %, the silicone oil (skimmer) of 0.01-0.03 weight %, the phthalein viridescent of 0.5-1.0 weight % and the aluminium silver powder of 3-8 weight %; The second component is oneself two isocyanic acid prepolymers; Two kinds of components of first, second are processed according to the ratio uniform mixing of OH: NCO=1: 1-1.1.This coating can improve the solids content of each construction, but the shortcoming that this coating exists is that solidification rate is slower, and when storing temperature is lower than 80 ℃, can't reach the hardness that is enough to satisfy the grinding and buffing requirement.
Therefore, it is fast and under lower storing temperature, can reach the bi-component acrylic resin coating that is enough to satisfy the hardness that grinding and buffing requires and become the problem that presses for solution to develop a kind of solidification rate.
Summary of the invention
It is slow to the objective of the invention is to overcome the solidification rate that existing bi-component acrylic resin coating exists; And need higher storing temperature just can reach to be enough to satisfy the shortcoming of the hardness that grinding and buffing requires, provide a kind of solidification rate very fast and under lower storing temperature, can reach the bi-component acrylic resin coating that is enough to satisfy the hardness that grinding and buffing requires.
The invention provides a kind of bi-component acrylic resin coating; This coating comprises gloss oil component and curing agent component; Said gloss oil component comprises resin, siccative, flow agent and organic solvent; Wherein, said resin is the mixture of first resin and second resin, and said first resin has the structure shown in the formula 1:
Formula 1
Wherein, R
1And R
2Be respectively the alkyl that carbonatoms is 1-4, it is 1000-5000 that the value of n makes the number-average molecular weight of first resin;
Said second resin has the structure shown in the formula 2:
Formula 2
R
3, R
4And R
5The carbonatoms that is respectively H or has a primary hydroxyl is the hydroxyalkyl of 1-4, and R
3, R
4And R
5Be not H simultaneously; R
6For H, carbonatoms are the alkyl of 1-4; It is 2000-10000 that the value of n makes the number-average molecular weight of second resin.
The present invention has improved the solidification rate of the coating that obtains significantly through using first resin and second resin, and the coating that obtains can be reached be enough to satisfy the hardness that grinding and buffing requires under lower storing temperature.
Embodiment
The invention provides a kind of bi-component acrylic resin coating; This coating comprises gloss oil component and curing agent component; Said gloss oil component comprises resin, siccative, flow agent and organic solvent; Wherein, said resin is the mixture of first resin and second resin, and said first resin has the structure shown in the formula 1:
Formula 1
Wherein, R
1And R
2Be respectively the alkyl that carbonatoms is 1-4, for example, R
1And R
2Can be respectively methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-or the tertiary butyl, it is 1000-5000 that the value of n makes the number-average molecular weight of first resin;
Said second resin has the structure shown in the formula 2:
Formula 2
R
3, R
4And R
5The carbonatoms that is respectively H or has a primary hydroxyl is the hydroxyalkyl of 1-4, for example, and R
3, R
4And R
5Can be respectively H, have primary hydroxyl methylol, have primary hydroxyl hydroxyethyl, have primary hydroxyl the hydroxyl n-propyl, have primary hydroxyl the hydroxyl sec.-propyl, have primary hydroxyl the hydroxyl normal-butyl, have the hydroxyl isobutyl-of primary hydroxyl or have the hydroxyl tertiary butyl of primary hydroxyl, and R
3, R
4And R
5Be not H simultaneously; R
6For H or carbonatoms are the alkyl of 1-4, for example, R
6Can be H, methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-or the tertiary butyl; It is 2000-10000 that the value of n makes the number-average molecular weight of second resin.
First resin that meets above-mentioned requirements can be commercially available, for example, and the SM2800/70BAC that cyanogen secret service industry company produces, Setalux 1211 BA-65 that 8019 and the NUPLEX company that Sanmu Group Co., Ltd., Jiangsu produces produces.
Second resin that meets above-mentioned requirements can be commercially available; For example; The SM507/XBAC that cyanogen secret service industry company produces; 8016 of Sanmu Group Co., Ltd., Jiangsu's production, Setalux 1198 SS-70, Setalux 1192 SS-60 and Setalux 1204 XS-60 that NUPLEX company produces.
According to the present invention, in the said bi-component acrylic resin coating, the content of gloss oil component and curing agent component can in very large range change, and under the preferable case, with respect to the gloss oil component of 100 weight parts, the content of said curing agent component is the 45-55 weight part.
In the said gloss oil component; The content of resin, siccative, flow agent and organic solvent can in very large range change, and under the preferable case, is benchmark with the gross weight of gloss oil component; The content of said resin is 60-85 weight %; The content of siccative is 0.01-0.1 weight %, and the content of flow agent is 0.5-5 weight %, and the content of organic solvent is 10-35 weight %.
In said resin, the weight ratio of said first resin and second resin is 0.4-1: 1.
Said siccative can be the various siccative that can be used in the bi-component acrylic resin coating, for example, can be in dibutyl tin laurate, stannous octoate and the methyldiethanolamine one or more.
Said flow agent can be the various flow agents that can be used in the bi-component acrylic resin coating, for example, can be YSR 3286 and/or the propenoate of 3000-5000 for number-average molecular weight.
The flow agent that meets above-mentioned condition can be commercially available; For example; As the YSR 3286 flow agent: BYK company produce 331,310,300,333, the Levaslip407 of the modest chemical prodn of moral, 410, Perenol S4, Perenol S43 that the Ninghua student of section produces; And as the propenoate flow agent: BYK company produce 358,357,359,350,361, the Levelol495 of the modest chemical prodn of moral, Perenol F3, Perenol F60 that the Ninghua student of section produces.
Said organic solvent can be the various organic solvents that can be used in the bi-component acrylic resin coating; For example; Can be in butylacetate, propylene glycol methyl ether acetate and the methyl amyl ketone one or more, under the preferable case, said organic solvent is methyl amyl ketone (MAK); Contriver of the present invention is surprised to find that; When using methyl amyl ketone, can reduce the viscosity of gloss oil component significantly, thereby make the appearance of the paint film that obtains through this coating better as organic solvent.
According to the present invention, said curing agent component comprises isocyanate trimerization body, stablizer and organic solvent, wherein; The content of isocyanate trimerization body, stablizer and organic solvent can in very large range change; Under the preferable case, be benchmark with the gross weight of said curing agent component, the content of said isocyanate trimerization body is 35-60 weight %; The content of said stablizer is 0.5-5 weight %, and the content of said organic solvent is 35-60 weight %.
The kind of said isocyanate trimerization body is conventionally known to one of skill in the art; For example, one or more in isophorone diisocyanate (IPDI) tripolymer, dicyclohexyl methane diisocyanate (HMDI) tripolymer, hexamethylene diisocyanate (HDI) tripolymer, hexahydrotoluene vulcabond (HTDI) tripolymer.Said diisocyanate trimer can be commercially available, for example, and hexamethylene diisocyanate (HDI) tripolymer of the N3390 trade mark that Bayer company produces.
The kind of said stablizer is conventionally known to one of skill in the art, for example, can be tolylsulfonyl isocyanic ester and/or acton; The kind of said organic solvent is conventionally known to one of skill in the art, for example, can be in butylacetate, propylene glycol methyl ether acetate, MIBK and the methyl amyl ketone one or more.
According to the present invention, said bi-component acrylic resin coating can obtain through prepared in various methods, for example, can obtain the gloss oil component through resin, siccative, flow agent and organic solvent are mixed; Isocyanate trimerization body, stablizer and organic solvent are mixed, obtain curing agent component.
According to method provided by the invention, the consumption of said gloss oil component and curing agent component can in very large range change, and under the preferable case, with respect to the gloss oil component of 100 weight parts, the consumption of said curing agent component is the 45-55 weight part.
According to method provided by the invention; The consumption of said resin, siccative, flow agent and organic solvent can in very large range change, and under the preferable case, is benchmark with the gross weight of gloss oil component; The consumption of said resin is 60-85 weight %; The consumption of siccative is 0.01-0.1 weight %, and the consumption of flow agent is 0.5-5 weight %, and the consumption of organic solvent is 10-35 weight %.
The kind of said resin, siccative, flow agent and organic solvent is same as above, repeats no more at this.
In the said resin, the weight ratio of said first resin and second resin is 0.4-1: 1.
According to method provided by the invention; The consumption of isocyanate trimerization body, stablizer and organic solvent can in very large range change; Under the preferable case, be benchmark with the gross weight of said curing agent component, the consumption of said isocyanate trimerization body is 35-60 weight %; The consumption of said stablizer is 0.5-5 weight %, and the consumption of said organic solvent is 35-60 weight %.
The kind of said isocyanate trimerization body, stablizer and organic solvent is same as above, repeats no more at this.
According to the present invention; Said bi-component acrylic resin coating can dilute through using thinner in use; Said thinner can be the various thinners that can be used in the dilution bi-component acrylic resin coating, for example, can be in butylacetate, trimethylbenzene, propylene glycol methyl ether acetate and the methyl amyl ketone one or more; The multiple of said dilution can use the specific requirement of effect that back institute will reach and the solids content of at every turn constructing to adjust according to coating; Under the preferable case, with respect to the bi-component acrylic resin coating of 100 weight parts, the consumption of said thinner can be the 1-5 weight part.
Through concrete embodiment the present invention is described in more details below.
Embodiment 1
1) preparation of gloss oil component
With first resin (number-average molecular weight is 1200 for cyanogen secret service industry company, SM2800/70BAC) of 40 weight parts, second resin (the cyanogen secret service industry company of 40 weight parts; SM507/XBAC; Number-average molecular weight is 2200), the dibutyl tin laurate of 0.02 weight part (U.S.'s aerochemistry, T-12), YSR 3286 (the BYK company of 0.2 weight part; 331; Number-average molecular weight is 3000), 0.5 parts by weight of acrylic ester flow agent (BYK company, 358N), the propylene glycol methyl ether acetate of the butylacetate of 10 weight parts and 9.28 weight parts place sand milling disperse to stir multi-purpose machine (general Shen, Shanghai chemical machinery ltd, JSF-400) in; And mix, obtain gloss oil component A1.
2) preparation of curing agent component
Hexamethylene diisocyanate tripolymer (Bayer with 45 weight parts; N3390), the tolylsulfonyl isocyanic ester (borchers of 0.6 weight part; TI), the propylene glycol methyl ether acetate of the butylacetate of 27.2 weight parts and 27.2 weight parts places sand milling to disperse to stir multi-purpose machine (general Shen, Shanghai chemical machinery ltd; JSF-400) in, and mix, obtain curing agent component B 1.
3) preparation of bi-component acrylic resin coating
Gloss oil component A1 and curing agent component B 1 make bi-component acrylic resin coating D1 with 2: 1 weight ratio.
Comparative Examples 1
1) preparation of gloss oil component
With the Hydroxylated acrylic resin 1151 of 40 weight parts (Aksu. Nobel company), dibutyl tin laurate (U.S.'s aerochemistry of 40 parts by weight of acrylic resins (Changxing chemical industry ltd), 0.02 weight part; T-12), the YSR 3286 of 0.2 weight part (BYK company; 331; Number-average molecular weight is about 3000), the propylene glycol methyl ether acetate of the butylacetate of 0.5 parts by weight of acrylic ester flow agent (BYK company, 358), 10 weight parts and 9.28 weight parts place sand milling disperse to stir multi-purpose machine (general Shen, Shanghai chemical machinery ltd, JSF-400) in; And mix, obtain reference gloss oil component CA1.
2) preparation of curing agent component
Hexamethylene diisocyanate tripolymer (Bayer with 45 weight parts; N3390), the tolylsulfonyl isocyanic ester (borchers of 0.6 weight part; TI), the propylene glycol methyl ether acetate of the butylacetate of 27.2 weight parts and 27.2 weight parts places sand milling to disperse to stir multi-purpose machine (general Shen, Shanghai chemical machinery ltd; JSF-400) in, and mix, obtain reference curing agent component CB1.
3) preparation of bi-component acrylic resin coating
Reference gloss oil component CA1 and reference curing agent component CB1 make reference bi-component acrylic resin coating CD1 with 2: 1 weight ratio.
Embodiment 2
1) preparation of gloss oil component
Second resin (Jiangsu three wood with first resin of 20 weight parts (Jiangsu three wood, 8019, number-average molecular weight is 4600), 45 weight parts; 8016; Number-average molecular weight is 8500), the YSR 3286 of the stannous octoate of 0.05 weight part, 1 weight part (the modest chemistry of moral, Levaslip 407, number-average molecular weight is 3500), the butylacetate of 10 weight parts, the propylene glycol methyl ether acetate of 10 weight parts and the methyl amyl ketone (Yi Shiman of 13.95 weight parts; MAK) place sand milling to disperse to stir multi-purpose machine (general Shen, Shanghai chemical machinery ltd; JSF-400) in, and mix, obtain gloss oil component A2.
2) preparation of curing agent component
With the dicyclohexyl methane diisocyanate tripolymer (Bayer) of 40 weight parts, the tolylsulfonyl isocyanic ester (borchers of 1 weight part; TI), the propylene glycol methyl ether acetate of the MIBK of 30 weight parts and 29 weight parts places sand milling to disperse to stir multi-purpose machine (general Shen, Shanghai chemical machinery ltd; JSF-400) in; And mix, obtain curing agent component B 2.
3) preparation of bi-component acrylic resin coating
Gloss oil component A2 and curing agent component B 2 make bi-component acrylic resin coating D2 with 1.9: 1 weight ratio.
Embodiment 3
1) preparation of gloss oil component
First resin (NUPLEX company with 30 weight parts; Setalux 1211 BA-65, number-average molecular weight is 3600), second resin (NUPLEX company, Setalux 1198 SS-70 of 40 weight parts; Number-average molecular weight is 5500), the methyldiethanolamine of 0.08 weight part, 2.5 parts by weight of acrylic ester flow agents (learn by the section Ninghua; Perenol F3), the methyl amyl ketone of the propylene glycol methyl ether acetate of the butylacetate of 10 weight parts, 10 weight parts and 7.42 weight parts (Yi Shiman, MAK) place sand milling disperse to stir multi-purpose machine (general Shen, Shanghai chemical machinery ltd, JSF-400) in; And mix, obtain gloss oil component A3.
2) preparation of curing agent component
With the hexahydrotoluene diisocyanate trimer (Bayer) of 55 weight parts, the tolylsulfonyl isocyanic ester (borchers of 2.5 weight parts; TI), the propylene glycol methyl ether acetate of the methyl amyl ketone of 20 weight parts and 22.5 weight parts places sand milling to disperse to stir multi-purpose machine (general Shen, Shanghai chemical machinery ltd; JSF-400) in; And mix, obtain curing agent component B 3.
3) preparation of bi-component acrylic resin coating
Gloss oil component A3 and curing agent component B 3 make bi-component acrylic resin coating D3 with 2.1: 1 weight ratio.
Embodiment 4
The coating D1 that embodiment 1 is made mixes with 50: 1 weight ratio with thinner; Said thinner is the mixture of butylacetate, propylene glycol methyl ether acetate, trimethylbenzene and methyl amyl ketone; Wherein, the weight ratio of butylacetate, propylene glycol methyl ether acetate, trimethylbenzene and methyl amyl ketone is 1: 1: 0.5: 2.Use the coating after the dilution that tinplate (is of a size of 50mm * 120mm * 0.3mm) spray; Afterwards tinplate is placed under 25 ℃ of temperature and carry out drying, tack-free with the finger touch paint film when drying proceeds to the 7th minute, explain that paint film has had cured on the surface; (go up the grand experimental installation of Nereid ltd at the electric heating constant temperature air dry oven afterwards; DHG-9246A, temperature is 60 ℃) in baking 20 minutes, obtain thickness and be 40 microns paint film.
Comparative Examples 2
The reference coating CD1 that Comparative Examples 1 is made mixes with 50: 1 weight ratio with thinner, identical among said thinner and the embodiment 4.Use the coating after the dilution that tinplate (is of a size of 50mm * 120mm * 0.3mm) spray, tinplate is placed under 25 ℃ of temperature carry out drying afterwards, when drying proceeds to the 20th minute, use the finger touch paint film; The still sticking hand of paint film; Coating surface just solidifies when drying proceeds to the 25th minute, (goes up the grand experimental installation of Nereid ltd, DHG-9246A at the electric heating constant temperature air dry oven afterwards; Temperature is 60 ℃) in baking 20 minutes, obtain thickness and be 40 microns paint film.
Embodiment 5
The coating D2 that embodiment 2 is made mixes with 100: 1 weight ratio with thinner; Said thinner is the mixture of butylacetate, propylene glycol methyl ether acetate, trimethylbenzene and methyl amyl ketone; Wherein, the weight ratio of butylacetate, propylene glycol methyl ether acetate, trimethylbenzene and methyl amyl ketone is 1: 1: 0.5: 2.Use the coating after the dilution that tinplate (is of a size of 50mm * 120mm * 0.3mm) spray; Afterwards tinplate is placed under 25 ℃ of temperature and carry out drying, tack-free with the finger touch paint film when drying proceeds to the 5th minute, explain that paint film has had cured on the surface; (go up the grand experimental installation of Nereid ltd at the electric heating constant temperature air dry oven afterwards; DHG-9246A, temperature is 60 ℃) in baking 20 minutes, obtain thickness and be 40 microns paint film.
Embodiment 6
The coating D3 that embodiment 3 is made mixes with 100: 1 weight ratio with thinner; Said thinner is the mixture of butylacetate, propylene glycol methyl ether acetate, trimethylbenzene and methyl amyl ketone; Wherein, the weight ratio of butylacetate, propylene glycol methyl ether acetate, trimethylbenzene and methyl amyl ketone is 1: 1: 0.5: 2.Use the coating after the dilution that tinplate (is of a size of 50mm * 120mm * 0.3mm) spray; Afterwards metal works is placed under 25 ℃ of temperature and carry out drying, tack-free with the finger touch paint film when drying proceeds to the 8th minute, explain that paint film has had cured on the surface; (go up the grand experimental installation of Nereid ltd at the electric heating constant temperature air dry oven afterwards; DHG-9246A, temperature is 60 ℃) in baking 20 minutes, obtain thickness and be 40 microns paint film.
Embodiment 7-9
According to following method, the paint film that respectively embodiment 4-6 is obtained carries out Performance Detection.
1) ground/polished property detection
The 1500 order sand paper that use 3M company to produce, the paint film that respectively embodiment 4-6 is obtained are polished and are used the polishing machine of 7403 models of 3M company production to polish, and the result is as shown in table 1.
2) appearance detects
The paint film that uses the production DOI of BYK company type tangerine peel appearance respectively embodiment 4-6 to be obtained carries out appearance and detects, and the result is as shown in table 1.
3) salt fog resistance detects
It is 47 ℃ that sample is placed on temperature; In the proofing box of humidity 96% (HOLINK H-SST-90 salt spray testing machine); With the solution of pH=6.8 (solution compolision: 50 grams per liter NaCl), spraying continuously, produce under the salt fog condition according to paint film come off, storage period of the phenomenon of foaming and colour-change etc.; Judge salt spray resistance, the result is as shown in table 1.
4) petrol-resistance detects
According to the GB/1734-93 standard, place No. 93 gasoline to soak in sample, produce according to paint film come off, the soak time of the phenomenon of foaming and colour-change etc., judge petrol-resistance can, the result is as shown in table 1.
5) water tolerance detects
According to GB/T 1771 standards, place zero(ppm) water to soak in sample, produce according to paint film come off, the soak time of the phenomenon of foaming and colour-change etc., judge petrol-resistance can, the result is as shown in table 1.
6) sticking power detects
Sample is placed on the test board, and using cutting knife on the same direction of sample surfaces, to draw length is that 20 millimeters, spacing are 11 lines of 1 millimeter, and intersecting in 90 degree directions then, to draw length be that 20 millimeters, spacing are 11 lines of 1 millimeter; Adhesive tape (Permacell-99) centre of 75 millimeters long carefully is placed on draws on the good grid and the ruling horizontal direction, make adhesive tape cover grid fully, use the eraser wiping then, adhesive tape is well contacted with grid fully; After 90 seconds, drag adhesive tape rapidly with 60 ° of horizontal directions, observe whether to have and comes off, like the nothing explanation qualified products that comes off from adhesive tape is monolateral.
7) weather resistance detects
According to GB/T 1865-1997 standard; Sample placed place side by side the proofing box of formula xenon lamp weather (southern Jiangsu, Wuxi testing installation ltd carries out the radiation of hernia arc in BSN-1), to detect weathering resistance; The radiating wavelength is 290-800nm, and the average irradiance between the 290-800nm wavelength is 550W/m
2, the radiated time that produces catabiosis according to paint film is judged the weather resistance of paint film, the result is as shown in table 1.
Comparative Examples 3
Detect the performance of the paint film that Comparative Examples 1 obtains according to the method identical with embodiment 7-9, the result is as shown in table 1.
Table 1
Can find out from last table 1; Compare with the reference bi-component acrylic resin coating CD1 that Comparative Examples 1 makes; The ground/polished property of the bi-component acrylic resin coating D1-D3 that embodiment 1-3 makes significantly improves, and explaining that bi-component acrylic resin coating provided by the invention can reach under lower storing temperature is enough to satisfy the hardness that grinding and buffing requires; And the appearance of spraying back paint film, salt spray resistance, petrol-resistance ability, water resistance and weather resistance also can meet the demands, even also have raising.
In addition; Compare with embodiment 1; It is better that the bi-component acrylic resin coating D2-D3 spraying back that embodiment 2 and 3 makes forms the appearance of paint film, explains when using methyl amyl ketone (MAK) as organic solvent, can further improve the appearance of spraying back paint film.
In addition; The bi-component acrylic resin coating D1-D3 that embodiment of the invention 1-3 makes carries out drying under 25 ℃ of temperature after spraying, had cured with interior coating surface at 8 minutes; And the reference bi-component acrylic resin coating CD1 that Comparative Examples 1 makes is after spraying; Under 25 ℃ of temperature, carry out drying, in drying 25 minutes the time coating surface just solidify, explain that the solidification rate of bi-component acrylic resin coating provided by the invention also improves significantly.
Claims (8)
1. bi-component acrylic resin coating; This coating comprises gloss oil component and curing agent component; Said gloss oil component comprises resin, siccative, flow agent and organic solvent, it is characterized in that, said resin is the mixture of first resin and second resin; The weight ratio of said first resin and second resin is 0.4-1:1, and said first resin has the structure shown in the formula 1:
Wherein, R
1And R
2Be respectively the alkyl that carbonatoms is 1-4, it is 1000-5000 that the value of n makes the number-average molecular weight of first resin;
Said second resin has the structure shown in the formula 2:
R
3, R
4And R
5The carbonatoms that is respectively H or has a primary hydroxyl is the hydroxyalkyl of 1-4, and R
3, R
4And R
5Be not H simultaneously; R
6For H or carbonatoms are the alkyl of 1-4; It is 2000-10000 that the value of n makes the number-average molecular weight of second resin.
2. coating according to claim 1, wherein, with respect to the gloss oil component of 100 weight parts, the content of said curing agent component is the 45-55 weight part.
3. coating according to claim 1; Wherein, in the said gloss oil component, be benchmark with the gross weight of gloss oil component; The content of said resin is 60-85 weight %; The content of siccative is 0.01-0.1 weight %, and the content of flow agent is 0.5-5 weight %, and the content of organic solvent is 10-35 weight %.
4. according to claim 1 or 3 described coating, wherein, said siccative is selected from one or more in dibutyl tin laurate, stannous octoate and the methyldiethanolamine.
5. according to claim 1 or 3 described coating, wherein, said organic solvent is selected from one or more in butylacetate, propylene glycol methyl ether acetate and the methyl amyl ketone.
6. coating according to claim 5, wherein, said organic solvent is a methyl amyl ketone.
7. coating according to claim 1 and 2; Wherein, Said curing agent component comprises isocyanate trimerization body, stablizer and organic solvent, is benchmark with the gross weight of said curing agent component, and the content of said isocyanate trimerization body is 35-60 weight %; The content of said stablizer is 0.5-5 weight %, and the content of said organic solvent is 35-60 weight %.
8. coating according to claim 7; Wherein, said isocyanate trimerization body is one or more in isophorone diisocyanate trimer, dicyclohexyl methane diisocyanate tripolymer, hexamethylene diisocyanate tripolymer and the hexahydrotoluene diisocyanate trimer; Said stablizer is tolylsulfonyl isocyanic ester and/or acton; Said organic solvent is one or more in butylacetate, propylene glycol methyl ether acetate, MIBK and the methyl amyl ketone.
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|---|---|---|---|
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| CN103351770B (en) * | 2013-07-01 | 2016-05-25 | 汪艾军 | A kind of ultrafast dry-fine paint coating and finish paint of applicable pipelining |
| CN105199511B (en) * | 2015-09-24 | 2017-12-29 | 维新制漆（深圳）有限公司 | A kind of stainless steel ground varnish and its preparation method and application |
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