CN1990611A - Ultraviolet light solidifying coating and preparation method thereof - Google Patents
Ultraviolet light solidifying coating and preparation method thereof Download PDFInfo
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- CN1990611A CN1990611A CN 200510135436 CN200510135436A CN1990611A CN 1990611 A CN1990611 A CN 1990611A CN 200510135436 CN200510135436 CN 200510135436 CN 200510135436 A CN200510135436 A CN 200510135436A CN 1990611 A CN1990611 A CN 1990611A
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Abstract
The invention discloses au uv-curing coatings. It comprises main resin, diluting agent and light initiator, addictive or not. The coating also comprises hydroxy acrylate and isocyanate curing agent, which will solidify into membrane when heated at 60 Deg. C, the membrane enables the hardness and wear resistance of paint membrane to meet the demand, then cures the main resin under low UV light radiation.
Description
Technical field
The invention relates to a kind of photo-cured coating and preparation method thereof, more specifically say so about a kind of ultraviolet-curing paint and preparation method thereof.
Background technology
Ultraviolet-curing paint (UV coating) is the emerging a kind of coating variety of China recent years, this solids coatings height, dry rapid, the saving energy.
Existing ultraviolet-curing paint contains matrix resin, and thinner and light trigger also contain auxiliary agents such as flow agent, defoamer, lubricant, anti-wear agent sometimes.Wherein, described matrix resin is selected from least a in polyester acrylate, urethane acrylate and the epoxy acrylate.
Existing ultraviolet-curing paint generally adopts the aliphatic urethane acrylate of 5-6 functional group (carbon-carbon double bond) as matrix resin, join a small amount of or the aliphatic urethane acrylate that is unworthy of 2-3 functional group as auxiliary film forming matter, joining a small amount of or being unworthy of the sense number of degrees is the individual acrylate monomer of 1-6, when the ultraviolet-curing paint that obtains like this is used for some plastic fittings with non-smooth surface, depression, corner tend to quantity of illumination deficiency, therefore can cause more and solidify not exclusively, cause the hardness of paint film and wear resistance not enough; If strengthen the UV-irradiation amount, with respect to same plastic cement surface coatings, the phenomenon of the embrittlement that often can occur because of the quantity of illumination is excessive again at smooth place hardening reduces paint film adhesion and snappiness.
Summary of the invention
The objective of the invention is in order to overcome wear resistance and the relatively poor shortcoming of snappiness over-all properties that existing ultraviolet-curing paint solidifies the paint film that the back forms, a kind of have simultaneously wear resisting property and flexible ultraviolet-curing paint and preparation method thereof preferably are provided.
In existing coating preparation, because the curing mechanism of non-photo-cured coating and photo-cured coating is different, photo-cured coating generally is cured by rayed such as UV-irradiation, but not photo-cured coating then is cured as heating by alternate manner, generally is photo-cured coating can not mixed use with non-photo-cured coating therefore.But the present inventor is surprised to find that, hydroxy acrylate and isocyanate curing agent are added in the existing ultraviolet-curing paint, and the paint film that solidifies back formation has good wear resistance and snappiness.Hydroxy acrylate and isocyanate curing agent are the components in non-photo-cured coating urethane (PU) coating, and the two situation about heating about 60 ℃ can be solidified into urethane film, and independent urethane film is hard, sticking power well also has simultaneously good flexible.Therefore, when adding hydroxy acrylate and isocyanate curing agent in the ultraviolet-curing paint, hardness and the wear resistance that makes paint film that can be heating and curing earlier can reach requirement, and then be that UV-cured resin is solidified than making matrix resin under the low ultraviolet irradiation, the phenomenon of embrittlement that can not occur hardening because of the quantity of illumination is excessive, thus make paint film have unexpected good wear resistance and snappiness.
The invention provides a kind of ultraviolet-curing paint, this coating contains matrix resin, thinner and light trigger, contains or do not contain auxiliary agent, and wherein, this coating also contains hydroxy acrylate and isocyanate curing agent.
The present invention also provides the preparation method of ultraviolet-curing paint, this method comprises matrix resin, light trigger and diluting solvent is mixed, with the dope filtration that obtains, wherein, this method also comprises adding hydroxy acrylate and isocyanate curing agent and mixes.
Owing to contain hydroxy acrylate and isocyanate curing agent in the ultraviolet-curing paint provided by the invention, the situation film-forming that hydroxy acrylate and isocyanate curing agent heat about 60 ℃, make the hardness and the wear resistance of paint film can reach requirement, under than low ultraviolet illumination, matrix resin is solidified then, the phenomenon of embrittlement that can not occur hardening because of the quantity of illumination is excessive, thus make paint film have good wear resistance and snappiness.
Embodiment
According to ultraviolet-curing paint provided by the invention, the content of described matrix resin, thinner, light trigger and auxiliary agent is the content of these component routines in the ultraviolet-curing paint.In general, be benchmark with the gross weight of coating, the content of described matrix resin is 20-80 weight %, is preferably 40-70 weight %; The content of thinner is 5-60 weight %, is preferably 10-50 weight %; The content of light trigger is 1-15 weight %, is preferably 2-8 weight %; The content of auxiliary agent is 0-10 weight %, is preferably 0.2-6 weight %; The content of hydroxy acrylate is 2-45 weight %, is preferably 5-30 weight %; The content of isocyanate curing agent is 0.5-15 weight %, is preferably 1-10 weight %.
There is no particular limitation to the kind of described matrix resin in the present invention, can be the various matrix resins that use in the existing ultraviolet-curing paint.Under the preferable case, described matrix resin is the mixture of high-functionality polyurethane acrylic resin and low functionality polyurethane acrylate resin.Described polyurethane acrylate resin can be selected from one or more in aliphatic urethane acrylate resin, cycloaliphatic polyurethane acrylate resin and the aromatic urethane acrylate resin, preferred aliphat polyurethane acrylate resin.
Described urethane acrylate can be a kind of xanthochromia type prepolymer, as with aromatic series vulcabond synthetic urethane acrylates such as tolylene diisocyanates, under the preferable case, described urethane acrylate is a kind of non-yellow stain type prepolymer that contains 2-9 functional group, it can be commercially available, as the urethane acrylate that contains 2-9 functional group of Sa Duoma (sartomer), Changxing chemical industry (Eternal), BASF (Basfu) or the production of lid Si Tafu companies such as (galstaff).Also can adopt known method to prepare.For example, vulcabond with no flavescence performance, as isophorone diisocyanate (IPDI), hexamethylene-diisocyanate (HDI) or dicyclohexyl methane diisocyanate (HMDI) synthetic urethane acrylate and polyester glycol reaction, promptly get urethane acrylate with Hydroxyethyl acrylate or Propylene glycol monoacrylate reaction again.It is that second-order transition temperature is between 50-100 ℃ below the 8000cps (25 ℃) that the condition optimization of reaction makes the viscosity of the polyurethane acrylate resin that obtains.The condition of this reaction is conventionally known to one of skill in the art.Can and adopt ammonia ester grafted method according to the hydroxyl groups number, make the end of synthetic urethane acrylate molecule contain the carbon-carbon double bond of different numbers.The number of two keys can be from 2-9, and modal is 2-6.Number according to institute's carbon-carbon double bonds can be divided into urethane acrylate two classes, the urethane acrylate that generally molecular end is contained 2-3 two keys is called low functionality urethane acrylate, and the urethane acrylate that molecular end contains 4-9 two keys is called high-functionality polyurethane acrylic.
The present invention adopts the matrix resin of the mixture of high-functionality polyurethane acrylic resin and low functionality polyurethane acrylate resin as ultraviolet-curing paint, gross weight with matrix resin is a benchmark, the content of high-functionality polyurethane acrylic resin is 10-90 weight %, be preferably 30-80 weight %, the content of low functionality polyurethane acrylate resin is 10-90 weight %, is preferably 20-70 weight %.The sense number of degrees of high-functionality polyurethane acrylic are 4-9, are preferably 5-6.
There is no particular limitation to the kind of thinner in the present invention, can be the various thinners that use in the existing ultraviolet-curing paint.For example, described thinner can be selected from one or more in toluene, ethyl acetate, butylacetate, isobutyl acetate, propyl acetate, cyclohexanone, dimethylbenzene, hexone, acetone, methylethylketone, butyl glycol ether, propylene glycol butyl ether, ethylene glycol ether acetate, the 1-Methoxy-2-propyl acetate.
There is no particular limitation to the kind of light trigger in the present invention, can be the various light triggers that use in the existing ultraviolet-curing paint.For example, described light trigger can be selected from IHT-PI185, IHT-PI907, Irgacure651, Irgacure184, Irgacure369, Irgacure754, Irgacure2022, darocur1173, one or more among the darocurMBF.Wherein IHT-PI series is Chinese domestic goods, Irgacure, and darocur series is Switzerland vapour Bagong department product, its trade mark is conventionally known to one of skill in the art.
There is no particular limitation to the kind of described auxiliary agent in the present invention, can be the various auxiliary agents that use in the existing ultraviolet-curing paint.For example, described auxiliary agent is one or more in flow agent, defoamer and the dispersion agent.The kind of these auxiliary agents has been conventionally known to one of skill in the art.
The kind of described flow agent and consumption have been conventionally known to one of skill in the art, and for example described flow agent can be selected from EFKA3883, EFKA3886, EFKA3600, 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 gross weight is benchmark, and the content of described flow agent is 0-2 weight %, is preferably 0-1.5 weight %.
The kind of described defoamer and consumption are conventionally known to one of skill in the art, and for example, described defoamer can be selected among EFKA2022, EFKA2527, EFKA2040, BYK352, BYK354 and the BYK357 one or more.With the coating gross weight is benchmark, and the content of described defoamer is 0-2 weight %, is preferably 0-1.5 weight %.
Described dispersion agent refers to any material that can improve described matrix resin dispersion state in solvent, as among Kerper-602, Kerper-605, Kerper630, CFC-500HP, CFC-510, CFC-637 and the CFC-604S one or more.Wherein Kerper series is U.S. Kerper company product, and CFC series is French CFC company product.With the coating gross weight is benchmark, and the content of described dispersion agent is 0-5 weight %, is preferably 0-3 weight %.
Described hydroxy acrylate and isocyanate curing agent can be for being usually used in the hydroxy acrylate and the isocyanate curing agent of urethane (PU) coating.
Hydroxy acrylate is preferably the saturated prepolymer of aliphatics non-yellow stain type that contains activity hydroxy.Hydroxy acrylate can be commercially available, for example Niu Peisi (Nuplex), excellent Thebe (UCB), lid Si Tafu (galstaff), Mitsui Chemicals, the Chinese product of producing with companies such as morals.For example can use VSM2706, the VSM2800 of Rhodene H21, Rhodene H23B, Tires 4747 and 4702 resins and UCB. S.A. (BE) Bruxelles Belgium of Nuplex company.There is no particular limitation to the hydroxyl value of hydroxy acrylate in the present invention, for example, the hydroxyl value of hydroxy acrylate can be 10-200 milligram potassium hydroxide/gram, is preferably 20-150 milligram potassium hydroxide/gram, and wherein hydroxyl value is measured according to the method for stipulating among the ISO 2554-1974.
Described isocyanic ester can be selected from aliphatic isocyanates monomer, tripolymer or prepolymer;? in isocyanate-monomer, tripolymer or the prepolymer one or more, be preferably aliphatic isocyanates monomer, tripolymer or prepolymer, more preferably the aliphatic isocyanates tripolymer.The trimerical example of aliphatic isocyanates comprises one or more in isophorone diisocyanate (IPDI) tripolymer, dicyclohexyl methane diisocyanate (HMDI) tripolymer, hexamethylene diisocyanate (HDI) tripolymer, hexahydrotoluene vulcabond (HTDI) tripolymer.Described isocyanic ester can be commercially available, for example, and lid Si Tafu (galstaff), Asahi Chemical Industry (Asahikasei), Bayer (Bayer), the product that Luo Diya companies such as (Rhodia) produces.
Preparation method according to ultraviolet-curing paint provided by the invention, the mixing of described matrix resin, thinner, light trigger, hydroxy acrylate and isocyanic ester can be carried out also simultaneously can proceed step by step, under the preferable case, with light trigger and part mixing diluents, light trigger is fully dissolved, obtain containing the solution of light trigger; Matrix resin and part mixing diluents is even, obtain containing the slurries of matrix resin; Hydroxy acrylate and part mixing diluents is even, obtain containing the slurries of hydroxy acrylate; Isocyanate curing agent and part mixing diluents is even, obtain containing the slurries of isocyanate curing agent; To contain the solution of light trigger, the slurries that contain matrix resin, the slurries that contain hydroxy acrylate, the slurries that contain isocyanate curing agent again and mix, and add remaining diluent at last and mix.
The blended temperature is conventional mixing temperature, is generally 30-60 ℃.
If also contain auxiliary agents such as flow agent, defoamer, dispersion agent in the described coating, method provided by the invention also is included in and adds before the remaining diluent, in the slurries that contain light trigger, matrix resin, hydroxy acrylate, isocyanate curing agent and thinner that obtain, add flow agent, defoamer and/or dispersion agent, and the step that mixes.Described flow agent, defoamer, dispersion agent can add simultaneously also and can add step by step, and the order of adding does not have remarkable influence to the performance of coating.
According to a preferred implementation of method provided by the invention, this preparation method comprises that (1) is even with light trigger and part mixing diluents; (2) matrix resin and part mixing diluents is even; (3) hydroxy acrylate and part mixing diluents is even; (4) isocyanic ester and part mixing diluents is even; (5) product that step (1), (2), (3) and (4) is obtained mixes; (6) continue to add or do not add flow agent, defoamer, dispersion agent, and mix; (7) slurries that obtain are filtered in cooling; (8) continue to add remaining diluent, mix.
In method provided by the invention, the consumption of each material should make and obtain in the coating, is benchmark with the gross weight of coating, and the content of described matrix resin is 20-80 weight %, is preferably 40-70 weight %; The content of thinner is 5-60 weight %, is preferably 10-50 weight %; The content of light trigger is 1-15 weight %, is preferably 2-8 weight %; The content of auxiliary agent is 0-10 weight %, is preferably 0.2-6 weight %; The content of hydroxy acrylate is 2-45 weight %, is preferably 5-30 weight %; The content of isocyanate curing agent is 0.5-15 weight %, is preferably 1-10 weight %.
Coating provided by the invention is suitable as the finish paint of the plastic fittings of the finish paint of various material surfaces, particularly portable device, as the finish paint of handset shell surface, portable computer external, makeup shell.Coating thickness is generally the 6-15 micron, and 50-60 ℃ of down oven dry 15-20 minute is to shine 20-25 second under the UV-light of little Jiao of 300-500/square centimeter at the quantity of illumination, can obtain paint film.
In above-mentioned drying course, hydroxy acrylate that contains in the coating of the present invention and isocyanate curing agent can be solidified into urethane, urethane hardness height, sticking power is good, snappiness is good, can remedy owing to add the paint film wear resistance that low functionality aliphatic polyurethane acrylic resin causes and the loss of hardness in matrix resin.Therefore, the dual characteristics after the coating that solidify to form of ultraviolet-curing paint provided by the invention has had existing polyurethane coating and ultraviolet-curing paint concurrently and solidifies.
The following examples will the present invention will be further described.
Embodiment 1
Present embodiment illustrates coating provided by the invention and preparation method thereof.
Prepare coating as follows: (1) is stirred to abundant dissolving with 3 gram light trigger Irgacure184 and 2 gram mixing diluents; (2) with 25 grams, six functionality aliphatic urethane acrylate resin (Eternal products, the 6161-100 resin) and 20 three-functionality-degree aliphatic urethane acrylate resin (Eternal products, the 6136B-90 resin) mixes at 40 ℃ with 10 gram thinners, stir, (3) with 25 gram Hydroxylated acrylic resin (Nuplex products, 4702 resins) with 5 gram mixing diluents, be stirred to abundant dissolving; (4) with 7 gram isocyanate curing agents (Bayer product, model N3390) and 5 gram mixing diluents, be stirred to abundant dissolving; (5) product that step (1), (2), (3) and (4) is obtained mixes; (6) slurries that obtain are filtered in cooling, to remove residue, obtain coating T1.Wherein, used thinner is that weight ratio is the mixture of 2: 1: 1 acetone, butylacetate and dimethylbenzene.
Embodiment 2
Present embodiment illustrates coating provided by the invention and preparation method thereof.
Prepare coating as follows: (1) is stirred to abundant dissolving with 6 gram light trigger Irgacure184 and 2 gram mixing diluents; (2) with 40 grams, six functionality aliphatic urethane acrylate resin (Eternal products, the 6161-100 resin) and 20 three-functionality-degree aliphatic urethane acrylate resin (Eternal products, the 6136B-90 resin) mixes at 40 ℃ with 15 gram thinners, stir, (3) with 6 gram Hydroxylated acrylic resin (Nuplex products, 4702 resins) with 5 gram mixing diluents, be stirred to abundant dissolving; (4) with 2 gram isocyanate curing agents (Bayer product, model N3390) and 2 gram mixing diluents, be stirred to abundant dissolving; (5) product that step (1), (2), (3) and (4) is obtained mixes, and adds 1 gram flow agent Dego435; (6) slurries that obtain are filtered in cooling, to remove residue, continue to add 3 gram thinners, obtain coating T2.Wherein, used thinner is that weight ratio is the mixture of 2: 1: 1 acetone, butylacetate and dimethylbenzene.
Embodiment 3
Present embodiment illustrates coating provided by the invention and preparation method thereof.
Prepare coating as follows: (1) is stirred to abundant dissolving with 4 gram light trigger Irgacure184 and 3 gram mixing diluents; (2) with 22 grams, six functionality aliphatic urethane acrylate resin (Eternal products, the 6161-100 resin) and 20 three-functionality-degree aliphatic urethane acrylate resin (Eternal products, the 6136B-90 resin) mixes at 40 ℃ with 25 gram thinners, stir, (3) with 8 gram Hydroxylated acrylic resin (Nuplex products, 4702 resins) with 5 gram mixing diluents, be stirred to abundant dissolving; (4) with 2 gram isocyanate curing agents (Bayer product, model N3390) and 3 gram mixing diluents, be stirred to abundant dissolving; (5) product that step (1), (2), (3) and (4) is obtained mixes, and adds 1 gram flow agent Dego435; (6) slurries that obtain are filtered in cooling, to remove residue, continue to add 7 gram thinners, obtain coating T3.Wherein, used thinner is that weight ratio is the mixture of 2: 1: 1 acetone, butylacetate and dimethylbenzene.
Embodiment 4
Present embodiment illustrates coating provided by the invention and preparation method thereof.
Prepare coating as follows: (1) is stirred to abundant dissolving with 3 gram light trigger Irgacure184 and 2 gram mixing diluents; (2) with 20 grams, six functionality aliphatic urethane acrylate resin (Eternal products, the 6161-100 resin) and 30 three-functionality-degree aliphatic urethane acrylate resin (Eternal products, the 6136B-90 resin) mixes at 40 ℃ with 20 gram thinners, stir, (3) with 15 gram Hydroxylated acrylic resin (Nuplex products, 4702 resins) with 5 gram mixing diluents, be stirred to abundant dissolving; (4) with 3 gram isocyanate curing agents (Bayer product, model N3390) and 3 gram mixing diluents, be stirred to abundant dissolving; (5) product that step (1), (2), (3) and (4) is obtained mixes; (6) slurries that obtain are filtered in cooling, to remove residue, obtain coating T4.Wherein, used thinner is that weight ratio is the mixture of 2: 1: 1 acetone, butylacetate and dimethylbenzene.
Comparative Examples 1
This Comparative Examples is used to prepare existing ultraviolet-curing paint.
Prepare coating as follows: (1) is stirred to abundant dissolving with 6 gram light trigger Irgacure184 and 2 gram mixing diluents; (2) with 40 grams, six functionality aliphatic urethane acrylate resin (Eternal products, the 6161-100 resin) and 20 three-functionality-degree aliphatic urethane acrylate resin (Eternal products, the 6136B-90 resin) mixes at 40 ℃ with 15 gram thinners, stir; (3) product that step (1) and (2) are obtained mixes, and adds 1 gram flow agent Dego435; (4) slurries that obtain are filtered in cooling, to remove residue, continue to add 16 gram thinners, obtain coating TC1.Wherein, used thinner is that weight ratio is the mixture of 2: 1: 1 acetone, butylacetate and dimethylbenzene.
Comparative Examples 2
This Comparative Examples is used to prepare existing ultraviolet-curing paint.
Prepare coating as follows: (1) is stirred to abundant dissolving with 6 gram light trigger Irgacure184 and 2 gram mixing diluents; (2) 60 gram six functionality aliphatic urethane acrylate resins (Eternal product, 6161-100 resin) are mixed at 40 ℃ with 15 gram thinners, stir; (3) product that step (1) and (2) are obtained mixes, and adds 1 gram flow agent Dego435; (4) slurries that obtain are filtered in cooling, to remove residue, continue to add 16 gram thinners, obtain coating TC2.Wherein, used thinner is that weight ratio is the mixture of 2: 1: 1 acetone, butylacetate and dimethylbenzene.
Performance test
Coating T1-T4 and TC1-TC2 that embodiment 1-4 and Comparative Examples 1-2 are obtained are sprayed at respectively on the plastic casing, and 50 ℃ of oven dry 20 minutes, and through UV-irradiation 25 seconds obtain thickness and be 12 microns solidifying film layer.Test wear resistance, hardness, sticking power and the folding resistance (snappiness) of solidifying film layer in accordance with the following methods respectively, the result is as shown in table 1.
Wear resistance is measured: the 7-IBB type RCA abrasion instrument that uses U.S. Nuo Man Instrument and Equipment Company to produce, and under the effect of 175 gram forces, the paint film after the mill spraying, during the show-through material of paint film, the number of times that rubber wheel rotates.
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%.
Measurement of hardness: carry out according to chapter 4 regulation among the GB/6739T.
Folding resistance test: the paint film model for preparing is carried out 900 fold, observe coating surface and have or not big area explosion phenomenon, with behind its recovery plane, observe paint and have or not peeling phenomenon then.Think then that as the no peeling phenomenon of paint snappiness is good in embodiments of the present invention, paint has a little peeling phenomenon to think that then snappiness is general, and paint has serious peeling phenomenon to think that then snappiness is poor.
Table 1
| The embodiment numbering | Finish code | The mensuration project | |||
| Hardness | Sticking power | Wear-resisting | Snappiness | ||
| Embodiment 1 | T1 | 3H | 5B | 500 | Good |
| Embodiment 2 | T2 | 3H | 4B | 400 | Generally |
| Embodiment 3 | T3 | 3H | 4B | 400 | Good |
| Embodiment 4 | T4 | 3H | 4B | 450 | Good |
| Comparative example 1 | TC1 | 2H | 3B | 300 | Generally |
| Comparative example 2 | TC2 | 2H | 2B | 450 | Difference |
The over-all properties of wear resistance, hardness, sticking power and the folding resistance (snappiness) of the rete after from the result shown in the table 1 as can be seen, ultraviolet-curing paint provided by the invention solidifies is better than existing ultraviolet-curing paint.The sticking power of Comparative Examples 1 and snappiness still can, hardness and wear resistance are too poor, though the wear resistance of Comparative Examples 2 and hardness than higher, but sticking power and snappiness are too poor.Therefore, compare with 2 with Comparative Examples 1, the rete after ultraviolet-curing paint provided by the invention solidifies has unexpected good wear resistance, hardness, sticking power and snappiness.
Claims (15)
1, a kind of ultraviolet-curing paint, this coating contains matrix resin, thinner and light trigger, contains or does not contain auxiliary agent, it is characterized in that this coating also contains hydroxy acrylate and isocyanate curing agent.
2, coating according to claim 1, wherein, gross weight with coating is a benchmark, the content of described matrix resin is 20-80 weight %, the content of thinner is 5-60 weight %, and the content of light trigger is 1-15 weight %, and the content of auxiliary agent is 0-10 weight %, the content of hydroxy acrylate is 2-45 weight %, and the content of isocyanate curing agent is 0.5-15 weight %.
3, coating according to claim 2, wherein, gross weight with coating is a benchmark, the content of described matrix resin is 40-70 weight %, the content of thinner is 10-50 weight %, and the content of light trigger is 2-8 weight %, and the content of auxiliary agent is 0.2-6 weight %, the content of hydroxy acrylate is 5-30 weight %, and the content of isocyanate curing agent is 1-10 weight %.
4, coating according to claim 1, wherein, described hydroxy acrylate is the saturated prepolymer of aliphatics non-yellow stain type that contains activity hydroxy.
5, coating according to claim 4, wherein, the hydroxyl value of described hydroxy acrylate is a 10-200 milligram potassium hydroxide/gram.
6, coating according to claim 1, wherein, described isocyanate curing agent is aliphatic isocyanates monomer, tripolymer or prepolymer.
7, coating according to claim 6, wherein, described aliphatic isocyanates tripolymer is selected from one or more in isophorone diisocyanate trimer, dicyclohexyl methane diisocyanate tripolymer and the hexahydrotoluene diisocyanate trimer.
8, coating according to claim 1, wherein, described matrix resin is the mixture of high-functionality polyurethane acrylic resin and low functionality polyurethane acrylate resin; Described high-functionality polyurethane acrylic resin is the polyurethane acrylate resin that molecular end contains 4-9 carbon-carbon double bond, and described low functionality polyurethane acrylate resin is the polyurethane acrylate resin that molecular end contains 2-3 carbon-carbon double bond.
9, coating according to claim 8, wherein, described polyurethane acrylate resin is selected from one or more in aliphatic urethane acrylate, cycloaliphatic polyurethane acrylate resin and the aromatic urethane acrylate resin.
10, coating according to claim 8 wherein, is benchmark with the gross weight of matrix resin, and the content of described high-functionality polyurethane acrylic resin is 10-90 weight %, and the content of described low functionality polyurethane acrylate resin is 10-90 weight %.
11, coating according to claim 1, wherein, described thinner is selected from one or more in toluene, ethyl acetate, butylacetate, isobutyl acetate, propyl acetate, pimelinketone, dimethylbenzene, hexone, acetone, methylethylketone, butyl glycol ether, propylene glycol butyl ether, ethylene glycol ether acetate, the 1-Methoxy-2-propyl acetate.
12, coating according to claim 1, wherein, described auxiliary agent is selected from one or more in flow agent, defoamer, the dispersion agent.
13, the preparation method of the described coating of claim 1, this method comprises matrix resin, light trigger and diluting solvent is mixed, dope filtration with obtaining is characterized in that, this method also comprises adding hydroxy acrylate and isocyanate curing agent and mixes.
14, method according to claim 13, wherein, described matrix resin, thinner, light trigger, hydroxy acrylate and isocyanate curing agent blended step are, with light trigger and part mixing diluents, light trigger is fully dissolved, obtain containing the solution of light trigger; Matrix resin and part mixing diluents is even, obtain containing the slurries of matrix resin; Hydroxy acrylate and part mixing diluents is even, obtain containing the slurries of hydroxy acrylate; Isocyanate curing agent and part mixing diluents is even, obtain containing the slurries of isocyanate curing agent; To contain the solution of light trigger, the slurries that contain matrix resin, the slurries that contain hydroxy acrylate, the slurries that contain isocyanate curing agent again and mix, and add remaining diluent at last and mix.
15, method according to claim 13, wherein, this method also is included in and adds before the remaining diluent, in the slurries that contain light trigger, matrix resin, hydroxy acrylate, isocyanate curing agent and thinner that obtain, add flow agent, defoamer and/or dispersion agent, and the step that mixes.
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| CN102234479A (en) * | 2010-04-20 | 2011-11-09 | 东莞市佩琦涂料有限公司 | Ultraviolet-thermal curable coating |
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2005
- 2005-12-28 CN CNB2005101354362A patent/CN100567414C/en not_active Expired - Fee Related
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