CN1986708A - Primer composition and its preparing process and use - Google Patents
Primer composition and its preparing process and use Download PDFInfo
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- CN1986708A CN1986708A CN 200510132094 CN200510132094A CN1986708A CN 1986708 A CN1986708 A CN 1986708A CN 200510132094 CN200510132094 CN 200510132094 CN 200510132094 A CN200510132094 A CN 200510132094A CN 1986708 A CN1986708 A CN 1986708A
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Abstract
The primer composition contains resin, nitro cellulose, plasticizer, aluminum-silver slurry and diluent with or without assistant. The resin is resin with vitrification temperature of 50-90 deg.c, and the plasticizer is one or several selected from dioctyl phthalate, dibutyl phthalate, diethyl phthalate and dioctyl sebacate. The primer composition is suitable for various material, such as cellphone case, portable computer casing, etc and may be used primer for ultraviolet ray solidified finish paint to make the ultraviolet ray solidified coating possess high brightness and high adhesion.
Description
Technical field
The invention relates to the Preparation method and use of a kind of primer composition and it, more particularly, the invention relates to primer composition that a kind of and ultraviolet light polymerization finish paint be used and its Preparation method and use.
Background technology
At present, the plastic fittings surface mostly scribbles the extremely strong silvery white colored paint coating of metal sense as plastic casings such as handset shell surface, portable computer external, digital camera, MP3, the sheet aluminium paste that contains in this coating system need be in auxiliary down could parallel being formed at the filming of CAB (cellulose acetate butyrate) or NC (Nitrocellulose) and make coating have splendid metal sense.Therefore, the quality of the final metal effect of undercoat of this type of color depends on the mating reaction with CAB or NC to a great extent.
The primer base that is used for the spraying of plastic component surface at present mostly adopts the method for adding CAB to improve adhesive force of coatings and brightness.
CN1397614A discloses a kind of plastic coating and preparation method thereof, the component of this coating and content (weight percentage) are: acrylic resin 55-60%, cellulose acetate butyrate 4-6%, aldehyde ketone resin 2-4%, Synolac 5-8%, softening agent phosphoric acid ester 2-4%, thinner 25-30%, flow agent 0.2-0.4%, pigment 3-6%.
CN1390899A discloses a kind of vacuum electroplating surface paint for plastics and preparation method thereof, and this electroplating surface paint comprises following component, and each component concentration (weight percentage) is:
Nitrocellulose 25-30%, isobutyl-etherificate aminoresin 20-25%, the high imino-melamine resin of normal-butyl etherificate 2.0-4.0%, Synolac 0.5-1.0%, aldehyde ketone resin 2.0-4.0%, sticking power promotor 0.5-1.0%, softening agent 5.0-8.0%, thinner 30-35%, flow agent 0.1-0.2%, aluminium-silver slurry 2.0-4.0%.Described sticking power promotor is the polyester soft resin, and described softening agent is a phosphoric acid ester.
Though it is good to add the sticking power of undercoat of CAB, compares as the coating of undercoat with adding NC, the cost of CAB but will exceed 3 times at least than NC, and the undercoat that adds CAB compares with the undercoat of interpolation NC, and brightness is lower.But because existing relatively poor as the ADHESION OF PAINTS power of priming paint to add NC, that therefore uses is not extensive, and use face is narrower, especially not in the finish paint system of ultraviolet light polymerization as priming paint.And the priming paint that existing and finish paint ultraviolet light polymerization are used mainly adopts is sticking power CAB system preferably, but its brightness is inferior than the NC system again.
Summary of the invention
The priming paint that the objective of the invention is to solve prior art can not make simultaneously be coated with rete have high brightness and preferably sticking power defective and provide a kind of can making to be coated with the primer composition that is used for ultraviolet light polymerization finish paint system that rete has high brightness and good sticking power simultaneously.
Another object of the present invention provides the preparation method of this primer composition.
The invention provides a kind of primer composition, wherein, said composition contains resin, Nitrocellulose, softening agent, aluminium-silver slurry and thinner, contain or do not contain auxiliary agent, described resin is the resin of second-order transition temperature between 50-90 ℃, and described softening agent is selected from one or more in dioctyl phthalate (DOP), dibutyl phthalate, diethyl phthalate, the dioctyl sebacate.
The invention provides a kind of preparation method of primer composition, wherein, this method comprises auxiliary agent and the mixing diluents that resin, Nitrocellulose, softening agent, aluminium-silver slurry and selectivity are contained, described aluminium-silver slurry and resin are dispersed in the described thinner, then with the dope filtration that obtains, described resin is the resin of second-order transition temperature between 50-90 ℃, and described softening agent is selected from one or more in dioctyl phthalate (DOP), dibutyl phthalate, diethyl phthalate, the dioctyl sebacate.
Contain the softening agent that is suitable for reducing the second-order transition temperature of Nitrocellulose and changes its easy embrittlement performance in the primer composition provided by the invention, this softening agent can make the intermolecular space of Nitrocellulose increase, reduce it local viscosity, improve the motor capacity of its macromolecular chain segment, thereby the formed sticking power that is coated with rete improves greatly be applied to the finish paint of ultraviolet light polymerization at the priming paint that will add Nitrocellulose after, has guaranteed that again Nitrocellulose itself can make the advantage with higher brightness and metal-like that is coated with rete simultaneously.Therefore, primer composition provided by the invention is suitable as the prime paint of various materials, as the priming paint of plastic fittings surface as plastic casings such as handset shell surface, portable computer external, digital camera, MP3, and can also be used for finish paint system at ultraviolet light polymerization as primer coating, make the rete that is coated with of ultraviolet light polymerization finish paint have high brightness and good sticking power simultaneously.
Embodiment
According to primer composition provided by the invention, total amount with this coating composition is a benchmark, the content of described resin is 30-50 weight %, the content of described Nitrocellulose is 1-5 weight %, the content of described softening agent is 0.1-5 weight %, the content of described aluminium-silver slurry is 5-15 weight %, and the content of described thinner is 40-55 weight %, and the content of described auxiliary agent is 0-5 weight %.
According to the present invention, described softening agent in the described primer composition can reduce the second-order transition temperature of Nitrocellulose (NC), thereby change its easy embrittlement performance, and make the intermolecular space of Nitrocellulose increase, reduce the motor capacity of local viscosity, raising macromolecular chain segment, and the sticking power that is coated with rete that the primer composition that further improves and improve the interpolation Nitrocellulose forms, total amount with coating composition is a benchmark, the content of described softening agent is 0.1-5 weight %, is preferably 0.2-3 weight %.
Described resin is the resin of second-order transition temperature between 50-90 ℃, as thermoplastic acrylic resin, Hydroxylated acrylic resin, self-drying type Synolac, vinyl chloride-vinyl acetate resin, aldehyde ketone resin etc.Second-order transition temperature (Tg) refers to that resin is by the temperature of glassy transition to elastomeric state.Under the preferable case, resin of the present invention is the thermoplastic acrylic resin, described thermoplastic acrylic resin is the resin that is formed by acrylate and methacrylic ester and other olefinic type monomers copolymerization, is preferably the multipolymer that methyl methacrylate and butyl methacrylate are principal monomer.Described thermoplasticity acrylic acid ester resin can be selected one or more in ICI2103, ICI2106, ROHM AND HAAS A-11, ROHM AND HAAS A-12, ROHM AND HAAS B60, ROHM AND HAAS B66, ROHM AND HAAS A-21, Mitsubishi BR-113, Mitsubishi BR-116, Mitsubishi MB-2952, Mitsubishi MB2660, Mitsui 101, the Mitsui 102 for use.The above-mentioned trade mark is conventionally known to one of skill in the art.
Coating is coated with the formation of rete to the content of described resin and the fastness to rubbing and the hardness of coating has bigger influence, higher resin content helps to be coated with the formation of rete, and easily make rete reach good fastness to rubbing and hardness, can increase the difficulty of construction and the flow leveling that worsens rete but resin content is too high, make the paint film layer surface quality after the curing not good.Therefore, be benchmark with the coating total amount, the suitable content of the resin among the present invention is 30-50 weight %, is preferably 30-40 weight %.
Described Nitrocellulose is that nitrogen content is the white cotton-shaped or sheet-like fiber of 11.5-12.2 weight %.The kind of the Nitrocellulose described in the coating of the present invention is conventionally known to one of skill in the art, Britain ICI DLX8/13 nitro-cotton for example, the A20 nitro-cotton of France BNC, the LIG1/4 nitro-cotton of Japan ASAHI, the As500 nitro-cotton of Germany WOLFF, the AH25 nitro-cotton of German HAGEDOM and platform nitre nitro-cotton product H type Nitrocellulose 1/4s.Total amount with coating is a benchmark, and the content of described Nitrocellulose is 1-5 weight %, is preferably 2-5 weight %.
Described aluminium-silver slurry can be selected from the flakey aluminium-silver slurry, in the silver dollar type aluminium-silver slurry one or both, be preferably silver dollar type aluminium-silver slurry, the kind of described silver dollar type aluminium-silver slurry is conventionally known to one of skill in the art, as selecting Japanese Japan 7640NS, 7670NS for use, 7675NS, TCR2150,5660NS, 5680NS.The emerging ZA9660 of Shenzhen family, ZA9650, ZA9640.Shanghai Mitsui HL02, HL06, HL08.Schlenk Alushine6900，Alushine6620，Alushine6600。Card 2192,2194 is liked by Germany.Total amount with coating is a benchmark, and the content of described aluminium-silver slurry is 5-15 weight %, is preferably 10-15 weight %.
Described thinner is an organic solvent, and described thinner is selected from one or more in toluene, ethyl acetate, butylacetate, isobutyl acetate, propyl acetate, ethanol, propyl carbinol, pimelinketone, dimethylbenzene, hexone, acetone, methylethylketone, butyl glycol ether, the propylene glycol butyl ether.The kind of organic solvent and consumption should be able to fully dissolve described filmogen, and will have good volatility, and solvency power is too strong, end phenomenon then may occur stinging, and vaporator rate too greatly then may cause the paint film unfairness.Though one above-mentioned solvent is suitable, but, be preferably two or more the mixture in toluene, ethyl acetate, butylacetate, isobutyl acetate, propyl acetate, ethanol, propyl carbinol, pimelinketone, dimethylbenzene, hexone, acetone, methylethylketone, butyl glycol ether, the propylene glycol butyl ether.
The addition of described organic solvent should satisfy the dilution requirement of resin, also must be fit to the spraying coating process of coating on viscosity, so, be benchmark with the total amount of coating, the content of described organic solvent is 40-55 weight %, is preferably 40-50 weight %.
According to coating composition provided by the invention, this coating composition can also and preferably contain auxiliary agent, and described auxiliary agent comprises one or more in flow agent, anti-settling agent, the wetting dispersing agent.The kind of these auxiliary agents, content and effect have been conventionally known to one of skill in the art.
The kind of described flow agent and consumption are conventionally known to one of skill in the art, and for example described flow agent can be selected from EFKA3883, EFKA3886, EFKA3600, EFKA3777, BYK366, BYK333, among BYK307, the DEGO410 one or more.Wherein EFKA series is Dutch Ai Fuka company product, and BYK series is BYK company product, and DEGO series is German Di Gao company product, more than its trade mark be conventionally known to one of skill in the art.With the coating total amount is benchmark, and the content of described flow agent is 0-2 weight %, is preferably 0.1-2 weight %.
The effect of described anti-settling agent in coating composition is to form powerful network structure, makes system have excellent thixotropic property, can effectively prevent the sedimentation and the knot lump of the color stuffing in the coating.The kind of described anti-settling agent and consumption are conventionally known to one of skill in the art, for example, can select the modest 201P of Taiwan moral, 229 for use, the DS6500/6800-20X of U.S. TAVY, DS5000-10X, 6900-20X, 4200-10 etc. that the Japan nanmu originally changes into, the above trade mark is conventionally known to one of skill in the art.With the coating total amount is benchmark, and the content of described anti-settling agent is 0-2 weight %, is preferably 0.1-2 weight %.
Described wetting dispersing agent is to have concurrently wetting and auxiliary agent dissemination.The kind of described wetting dispersing agent and consumption are conventionally known to one of skill in the art, described wetting dispersing agent refers to any material that can improve the dispersion state of described aluminium-silver slurry in described resin solution, as the unsaturated polycarboxylic acid polymkeric substance of lower molecular weight, polymer unsaturated polyester carboxylic acid, complicated sulfonamide derivatives, electric neutrality poly carboxylic acid amine salt, modified high-molecular acrylate, Yelkin TTS etc.Specifically can select Kerper-602, Kerper-605, Kerper630, CFC-500HP, CFC-510, CFC-637, one or more among the CFC-604S for use.Wherein Kerper series is U.S. Kerper company product, and CFC series is French CFC company product.The above trade mark is conventionally known to one of skill in the art.With the coating total amount is benchmark, and the content of described wetting dispersing agent is 0-1 weight %, is preferably 0.1-1 weight %.
According to embodiment preferred of the present invention, with the coating total amount is benchmark, described thermoplastic acrylic resin's content is 30-40 weight %, the content of Nitrocellulose is 2-5 weight %, the content of softening agent is 0.2-3 weight %, the content of aluminium-silver slurry is 10-15 weight %, the content of organic solvent is 40-50 weight %, described auxiliary agent comprises flow agent, anti-settling agent and wetting dispersing agent, the content of flow agent is 0.1-2 weight %, the content of anti-settling agent is 0.1-2 weight %, and the content of wetting dispersing agent is 0.1-1 weight %.
Preparation method according to coating composition provided by the invention, the mixing of described resin, Nitrocellulose, aluminium-silver slurry and thinner and softening agent can be carried out also simultaneously can proceed step by step, preferred earlier with resin, Nitrocellulose and softening agent and mixing diluents, make abundant dissolving resin of thinner and Nitrocellulose, and then mix with aluminium-silver slurry.
In order to make the described resin can homodisperse, can also improve the blended temperature, but because the thinner that the present invention adopts is a kind of volatile organic solvent, and its solvency power is also better, therefore, the blended temperature should be lower than 50 ℃, is preferably 20 to being lower than 50 ℃.
Described coating can also contain auxiliary agent, and described auxiliary agent can add simultaneously also and can add step by step with other component, and the order of adding does not have remarkable influence to the performance of coating.Under the preferable case, also be included in before aluminium-silver slurry mixes, contain in the slurries of resin, Nitrocellulose and softening agent and thinner obtaining, add described auxiliary agent according to method provided by the invention, and the step that mixes.
In method provided by the invention, the consumption of each material should make and obtain containing in the coating, total amount with coating is a benchmark, content is 30-50 weight %, be preferably the resin of 30-40 weight %, content is 1-5 weight %, be preferably the Nitrocellulose of 2-5 weight %, content is 0.1-5 weight %, is preferably the softening agent of 0.2-3 weight %, content is 5-15 weight %, be preferably the aluminium-silver slurry of 10-15 weight %, content is 40-55 weight %, is preferably the thinner of 40-50 weight %, content is 0-5 weight %, is preferably the auxiliary agent of 0.3-5 weight %.
Primer composition provided by the invention is suitable as the prime paint of the plastic fittings of the prime paint of various materials, particularly portable device, as the prime paint of handset shell surface, portable computer external, digital camera, MP3.Generally before spraying be spraying again after 1: 0.8 the dilution proportion according to weight ratio with described coating composition and described thinner, coating thickness is generally the 5-9 micron, 50-60 ℃ of oven dry 5-15 minute.When described priming paint is used for the finish paint system of ultraviolet-curing paint, after described prime coat drying, spraying ultraviolet light polymerization varnish, coating thickness is generally the 10-15 micron, dried 10-15 minute for 50-60 ℃, and solidify second through UV-irradiation 20-25, obtain having the rete of higher metal brightness and good adhesion.
The following examples will the present invention will be further described, though resin described in the embodiment is example with thermoplastic acrylic resin,, be not that resin of the present invention is only limited to the thermoplastic acrylic resin, the situation of other component also is the same.
Embodiment 1-4
The following examples illustrate coating provided by the invention and preparation method thereof.
(1) flow agent that thermoplastic acrylic resin, Nitrocellulose, softening agent and selectivity are contained, anti-settling agent, wetting dispersing agent and mixing diluents are stirred to abundant dissolving; (2) in the mixture that step (1) obtains, add the silver slurry, stir; (3) filter the slurries that obtain,, obtain coating T1-T4 provided by the invention to remove residue wherein.
Table 1 has provided each material consumption.Table 2 has provided the composition of T1-T4.
Comparative Examples 1
This Comparative Examples explanation reference coating and preparation method thereof.
Method according to embodiment 1 prepares reference coating TB1, different is with the Nitrocellulose among CAB (Yi Siman products C AB381-0.5) the replacement embodiment 1, and the method according to CN1397614A adds the 3.5 plasticizer phthalic acid dioctyl esters that restrain among the softening agent phosphoric acid ester replacement embodiment 1, obtains reference coating TB1.
Comparative Examples 2
This Comparative Examples explanation reference coating and preparation method thereof.
Method according to embodiment 2 prepares reference coating TB2, and different is Nitrocellulose and the softening agent of using in the said composition among CAB (Yi Siman products C AB381-0.5) the replacement embodiment 3, obtains reference coating TB2.
Comparative Examples 3
This Comparative Examples explanation reference coating and preparation method thereof.
Method according to embodiment 3 prepares reference coating TB3, and different is not contain softening agent in the said composition, obtains reference coating TB3.
Comparative Examples 4
This Comparative Examples explanation reference coating and preparation method thereof.
Method according to embodiment 4 prepares reference coating TB4, and different is not contain softening agent in the said composition, obtains reference coating TB4.
Table 1
| The kind of each material and consumption | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Filmogen | Thermoplastic acrylic resin's 49 grams | Thermoplastic acrylic resin's 40 grams | Thermoplastic acrylic resin's 47.5 grams | Thermoplastic acrylic resin's 45 grams |
| Softening agent | Dioctyl phthalate (DOP) 1.5 gram dibutyl phthalates 1.0 gram dioctyl sebacates 1.0 grams | Dibutyl phthalate 1.0 gram diethyl phthalates 1.0 grams | Dioctyl phthalate (DOP) 0.5 gram | Dioctyl phthalate (DOP) 0.5 gram |
| The silver slurry | 5660NS 12.5 grams | 5660NS 18 grams | ZA9660 16 grams | 5660NS 14 grams |
| NC | H type NC1/4s 3 grams | H type NC1/4s 6 grams | H type NC1/4s 4 grams | H type NC1/4s 3 grams |
| Organic solvent | Dimethylbenzene 15 gram butylacetates 15 gram propyl carbinols 10 gram butyl glycol ethers 10 grams | Dimethylbenzene 15 gram propyl acetates 15 gram propyl carbinols 10 gram propylene glycol butyl ether 15 grams | Dimethylbenzene 15 gram butylacetates 15 gram propyl carbinols 25 grams | Dimethylbenzene 15 gram butylacetates 15 gram propyl carbinols 10 gram butyl glycol ethers 20 grams |
| Flow agent | EFKA3777 2.5 grams | EFKA3777 1.0 grams | - | EFKA3777 0.5 gram |
| Anti-settling agent | 1.5 | 0.5 | - | - |
| Wetting dispersing agent | 1.0 | 0.5 | - | - |
Table 2
| The embodiment numbering | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Finish code | T1 | T2 | T3 | T4 |
| Filmogen content, weight % | 40.0％ | 32.6％ | 38.6％ | 36.6％ |
| Plasticizer loading, weight % | 2.8％ | 1.6％ | 0.4％ | 0.4％ |
| Silver slurry content, weight % | 10.2％ | 14.6％ | 13.1％ | 11.4％ |
| NC content, weight % | 2.4％ | 4.9％ | 3.2％ | 2.4％ |
| Organic solvent content, weight % | 40.6％ | 44.7％ | 44.7％ | 48.8％ |
| Flow agent content, weight % | 2.0％ | 0.8％ | - | 0.4％ |
| Anti-settling agent content, weight % | 1.2％ | 0.4％ | - | - |
| Wetting dispersing agent content, weight % | 0.8％ | 0.4％ | - | - |
Embodiment 5-8
The following examples illustrate the performance of coating provided by the invention.
The coating T1-T4 that embodiment 1-4 is obtained is sprayed on the plastic casing, and 50 ℃ of oven dry spraying ultraviolet light polymerization varnish after 15 minutes, and through UV-irradiation 25 seconds obtains thickness and be 12 microns solidifying film layer.The performance of test solidifying film layer, the result is as shown in table 3.
Sticking power is measured: draw 100 1 millimeter * 1 millimeter square lattice at sprayed surface with drawing the lattice device, the model of producing with Minnesota Mining and Manufacturing Company is 600 smooth being bonded on the grid of scotch tape, do not stay a space, vertically uncover with utmost dispatch then, observe cut edge and have or not depainting.Is 5B as the depainting amount between 0-5%, is 4B between 5-10%, is 3B between 10-20%, is 2B between 20-30%, is B between 30-50%, is being 0B more than 50%.
Luminance test: the production standard colour table, measure L value (brightness value), a (red green value) and the b value (champac value) of coating by color difference meter (precision 0.001).
L, a, b are that Lab the most frequently used in the object color expression field shows the parameter in the color method.The Lab colour system is described three basic parameters of color with an imaginary spherical 3-D solid structure.On the present spherical cross section of the change list of form and aspect, a represents red direction, and-a represents green direction, and b is yellow direction, and-b is blue direction.Lightness shows that then on the longitudinal axis, more upwards lightness is high more, and downward more lightness is low more.
Comparative Examples 5-8
The performance of the following examples explanation reference coating.
The coating TB1-TB4 that Comparative Examples 1-4 is obtained be sprayed at the same plastic casing of embodiment 5-8 on, 50 ℃ of oven dry spraying ultraviolet light polymerization varnish after 15 minutes, and through UV-irradiation 25 seconds obtains thickness and is 12 microns solidifying film layer.The performance of test solidifying film layer, the result is as shown in table 3.
Table 3
| The embodiment numbering | Finish code | Sticking power | Brightness L value |
| Embodiment 5 | T1 | 5B | 89.861 |
| Comparative Examples 5 | TB1 | 5B | 88.525 |
| Embodiment 6 | T2 | 5B | 89.823 |
| Comparative Examples 6 | TB2 | 5B | 88.210 |
| Embodiment 7 | T3 | 5B | 89.752 |
| Comparative Examples 7 | TB3 | 3B | 89.924 |
| Embodiment 8 | T4 | 5B | 89.950 |
| Comparative Examples 8 | TB4 | 2B | 89.953 |
From the result of table 3 as can be seen, compare with reference coating, the rete that is coated with that obtains with coating provided by the invention has good sticking power and higher brightness value simultaneously.
Claims (11)
1, a kind of primer composition, it is characterized in that, said composition contains resin, Nitrocellulose, softening agent, aluminium-silver slurry and thinner, contain or do not contain auxiliary agent, described resin is the resin of second-order transition temperature between 50-90 ℃, and described softening agent is selected from one or more in dioctyl phthalate (DOP), dibutyl phthalate, diethyl phthalate, the dioctyl sebacate.
2, coating composition according to claim 1, wherein, total amount with this coating composition is a benchmark, the content of described resin is 30-50 weight %, the content of described Nitrocellulose is 1-5 weight %, and the content of described softening agent is 0.1-5 weight %, and the content of described aluminium-silver slurry is 5-15 weight %, the content of described thinner is 40-55 weight %, and the content of described auxiliary agent is 0-5 weight %.
3, coating composition according to claim 2, wherein, total amount with this coating composition is a benchmark, the content of described resin is 30-40 weight %, the content of described Nitrocellulose is 2-5 weight %, and the content of described softening agent is 0.2-3 weight %, and the content of described aluminium-silver slurry is 10-15 weight %, the content of described thinner is 40-50 weight %, and the content of described auxiliary agent is 0.3-5 weight %.
4, coating composition according to claim 3, wherein, described auxiliary agent comprises flow agent, anti-settling agent and wetting dispersing agent, and the content of described flow agent is 0.1-2 weight %, the content of anti-settling agent is 0.1-2 weight %, and the content of wetting dispersing agent is 0.1-1 weight %.
5, composition according to claim 1, wherein, described resin is selected from one or more in thermoplastic acrylic resin, Hydroxylated acrylic resin, self-drying type Synolac, vinyl chloride-vinyl acetate resin, the aldehyde ketone resin.
6, composition according to claim 1, wherein, described thinner is selected from one or more in toluene, ethyl acetate, butylacetate, isobutyl acetate, propyl acetate, ethanol, propyl carbinol, pimelinketone, dimethylbenzene, hexone, acetone, methylethylketone, butyl glycol ether, the propylene glycol butyl ether.
7, the preparation method of the described coating composition of claim 1, it is characterized in that, this method comprises auxiliary agent and the mixing diluents that resin, Nitrocellulose, softening agent, aluminium-silver slurry and selectivity are contained, described aluminium-silver slurry and resin are dispersed in the described thinner, with the dope filtration that obtains, described resin is the resin of second-order transition temperature between 50-90 ℃, and described softening agent is selected from one or more in dioctyl phthalate (DOP), dibutyl phthalate, diethyl phthalate, the dioctyl sebacate.
8, method according to claim 7, wherein, the mixing step of described resin, Nitrocellulose, softening agent, aluminium-silver slurry and thinner is earlier with resin, Nitrocellulose, softening agent and mixing diluents, thinner is fully dissolved resin and Nitrocellulose, and then mix with aluminium-silver slurry.
9, according to claim 7 or 8 described methods, wherein, with the temperature of mixed with resin be 20 to being lower than 50 ℃.
10, method according to claim 8, wherein, this method also is included in before aluminium-silver slurry mixes, and adds auxiliary agent in obtaining containing the slurries of resin, Nitrocellulose and softening agent and thinner, and the step that mixes.
11, the described coating composition of claim 1 is as the priming paint of ultraviolet light polymerization finish paint system.
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