CN106085203A - UV photocuring anti fogging coating composite - Google Patents
UV photocuring anti fogging coating composite Download PDFInfo
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- CN106085203A CN106085203A CN201610607807.0A CN201610607807A CN106085203A CN 106085203 A CN106085203 A CN 106085203A CN 201610607807 A CN201610607807 A CN 201610607807A CN 106085203 A CN106085203 A CN 106085203A
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- Prior art keywords
- photocuring
- hydrophilic
- coating composite
- fogging coating
- anti fogging
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Abstract
The invention provides a kind of UV photocuring anti fogging coating composite；Described compositions includes each component of following parts by weight: hydrophilic light-cured resin 35～80 parts；Hydrophobicity light-cured resin 15～50 parts；Hydrophilic photo-curing monomer 5～15 parts；Light trigger 1～5 parts；Auxiliary agent 0.01 0.05 parts；Described compositions also includes that solvent, described weight of solvent are 24 times of other component weight.After the UV anti-fog coating UV-light cured that the present invention provides, water-resistance property of coating can improve, and has lasting anti-fog performance simultaneously, and hardness of film wiping high, resistance to is good.
Description
Technical field
The invention belongs to photocureable coating field, be specifically related to the anti fogging coating composite of a kind of UV photocuring.
Background technology
Steam in air, when temperature is less than dew point, will condense into small drop and mist formation.This bad
Impact frequently occurs in window, bathroom mirror, glasses, swimming and Lunettes, windshield, optical instrument camera lens, car light, refers to
These are lived on the transparent material being closely related with us to show lamp, agricultural film etc..The result of transparent material surface water droplet atomization, not only
Light transmittance declines affects vision, produces harm sometimes, such as, condenses in such as rigorous analysiss such as infrared optics microscopes when droplet
Time on the lens surface of instrument, its accuracy analyzed can reduce.And when droplet condenses on solaode light-passing board, cause
Make solar absorption efficiency reduce, thus be unfavorable for that solar cell device gives full play to due effect.
In order to solve these problems, typically material surface can be carried out hydrophobic or hydrophilic treated.Hydrophobic conventional perfluorinated resin
Class, on the one hand price is higher, and on the other hand this resinoid is the softest, wears no resistance, and its hydrophobic property also causes its table simultaneously
Face easily adsorbs greasy dirt and dust, does not reaches the effect of requirement on the contrary.And the price of organic hydrophilic coating own is inexpensively, it is possible to
Its wearability is improved by some modifications.Use organic hydrophilic coating compared to hydrophobic coating processing method not only construction party
Just, and cheap.
It is concentrated mainly on super hydrophilic research both at home and abroad now, as coating surface introducing can form the group such as carboxylic of hydrogen bond
Base, amino, sulfydryl, hydroxyl, or some ionic groups: carboxylate radical, sulfonate radical, ammonium root, phosphate radical etc., when introducing these groups
Or during ion, the surface of coating reaches super hydrophilic state, sprawls at substrate surface height after moisture condensation, form one layer all
Even moisture film, eliminates the purpose that tiny drops of water reaches antifog to the diffuse-reflectance of light.Prepare super hydrophilic approach master at present
If by physical blending, Chemical modification, chemical bond connection.Antifogging coating in the market continues anti-fog performance with resistance to
Mill performance cannot balance, and after using a period of time, anti-fog performance just declines substantially.
Domestic patent CN 102795791A discloses a kind of wear-resisting super hydrophilic antireflecting coating, and this coating is by repeatedly depositing
Diallyl dimethyl ammoniumchloride and kayexalate prepare the double-decker of 5～20 layers, more poly-by deposition repeatedly
Diallyldimethylammonium chloride and containing particle diameter be 10～40nm SiO2The suspension of nano spherical particle prepares 3～8 layers
Double-decker, then by the hydrothermal treatment consists of 100～140 DEG C and the 100～300s systems that quench in the Muffle furnace of 600～800 DEG C
Coating needed for.Although the coating that the method prepares can reach the high rigidity of 5H and water contact angle is the least, but step is complicated,
The most anti-fog properties typically energy consumption is big, simply has the user of special high request suitable to performance.
Domestic patent CN102086348A discloses the preparation side of a kind of urethane cures acrylate anti-fog coating
Method, this coating is by hydrophilic acrylic resin, enclosed type polyethers isocyanate curing agent and catalyst dibutyltin dilaurylate
Composition.This coating hardness is more than 2H, and anti-wear performance is good, but it is general to continue anti-fog performance, and solidification process requires time for longer, and needs
Stage curing (50 DEG C～120 DEG C), technique is complex.
For overcoming tradition anti-fog coating on the market to continue anti-fog performance and the contradiction of anti-wear performance, the open a kind of UV of the present invention
Photocuring hydrophilic antifogging coating.Gained coating after this coating photocuring, hydrophilic is splendid and continues anti-fog performance remarkably, the most not
Anti-wear performance can be lost, therefore overcome some drawbacks of anti-fog coating on the market, be especially suitable for doing car light, windshield, bath
Room mirror, optical lens material etc. have the field of antifog requirement.
Summary of the invention
For defect of the prior art, it is an object of the invention to provide the hydrophilic antifogging Coating material composition of a kind of UV photocuring
Thing.
It is an object of the invention to be achieved through the following technical solutions:
The invention provides a kind of UV photocuring anti fogging coating composite, described compositions includes each of following parts by weight
Component:
Described compositions also includes that solvent, described weight of solvent are 2-4 times of other component weight.
Preferably, described hydrophilic light-cured resin, hydrophobicity light-cured resin, the weight portion of hydrophilic photo-curing monomer
Number sum is 100 parts.
Preferably, described hydrophilic light-cured resin is hydrophilic three official's urethane acrylate.
Preferably, the synthetic method of described hydrophilic polyurethane acrylate comprises the following steps:
S1, Polyethylene Glycol and diisocyanate are reacted in ethyl acetate, obtain the polyurethane of both-end NCO
Resin；
S2, the polyurethane resin of both-end NCO react with trimethylolpropane, obtain three terminal isocyanate group
Polyurethane resin；
S3, the polyurethane resin of three terminal isocyanate group react with 2-(Acryloyloxy)ethanol, obtain described hydrophilic three official
Urethane acrylate.
Preferably, described Polyethylene Glycol, diisocyanate, trimethylolpropane, the mole ratio of 2-(Acryloyloxy)ethanol are
6:9:1:3。
Preferably, the reaction temperature in described step S1, S2, S3 is 70～75 DEG C；Response time in step S1 is
2-3 hour, the response time in step S2 was 1-2 hour, and the response time in step S3 is 2-3 hour.
Preferably, the number-average molecular weight of described Polyethylene Glycol is 500～3000, preferably 1000～2500, more preferably
1500～2000.
Preferably, described diisocyanate is isoflurane chalcone diisocyanate (IPDI) or hydrogenation of benzene methylmethane two Carbimide.
Ester (HMDI)；More preferably IPDI.
Preferably, described hydrophobicity light-cured resin includes that degree of functionality is higher than the urethane acrylate of 6, degree of functionality is more than
Epoxy acrylate, degree of functionality equal to 2 are higher than one or more in the polyester acrylate of 4.
Preferably, described hydrophilic photo-curing monomer includes 3-propyl sulfonic acid methacrylic acid potassium, methacrylic acid front three
Ammonium chloride, allyloxy NPE, allyloxy NPE ammonium sulfate one or more
Combination.Described hydrophilic photo-curing monomer, in the present invention as polymerisable surfactant, can be substantially reduced water contact
Angle, and may participate in photocuring reaction, there is splendid lasting hydrophilic effect.
Preferably, described light trigger is 2-hydroxy-2-methyl-1-phenyl-1-propyl group ketone, 1-[4-(2-hydroxy ethoxy)-
Phenylene]-2-hydroxyl-2 ', 2 '-dimethyl ethyl ketone, 1-hydroxycyclohexyl phenyl ketone, 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-
One or more compositions in 2-morpholine-1-acetone.
Preferably, described solvent is ethyl acetate, butyl acetate, isopropanol, n-butyl alcohol, butyl glycol ether, propylene glycol first
At least one in ether, propylene glycol methyl ether acetate.
It is highly preferred that described solvent is ethyl acetate, butyl acetate and isopropanol, three's weight ratio is 2:3:1.
Preferably, at least one during described auxiliary agent includes levelling agent, polymerization inhibitor.
Present invention also offers the preparation method of a kind of UV photocuring anti fogging coating composite, described method includes following step
Rapid:
Accurately weigh each component, by hydrophilic three official's urethane acrylate, hydrophobicity light-cured resin, hydrophilic light admittedly
Change monomer and solvent mixes 30 minutes；Add light trigger and auxiliary agent, mix 10 minutes, the most prepared.
Prior art is compared, and the present invention has a following beneficial effect:
If anti-fog coating protracted hydrophilicity 1, on the market can be excellent, anti-wear performance just cannot be ensured；Contrary resistance in hardness
While mill excellence, the most anti-fog effect is general.And the present invention is because using the excellent light-cured resin of hydrophilic and polymerizable table
Face activating agent, coordinate high-ranking official hydrophobicity light-cured resin, after photocuring formed hydrophilic and hydrophobic parts crosslinking netted
Structure.Wherein hydrophilic segment has the hydrophilicity of excellence, causes water droplet easily to sprawl formation moisture film in coating without hazing.
Hydrophobic part plays the effect of anchor point in the coating, and crosslink density increases, it is ensured that coating will not be because of when running into substantial amounts of water
Swelling and dissolve, not only can guarantee that lasting anti-fog performance but also anti-wear performance can be improved.
2, the UV photocuring anti fogging coating composite that prepared by the present invention, is coated on plastic basis material surface, after photocuring, and institute
The initial stage water contact angle obtaining film is less than 10 degree, and after water soaking 100 hours, water contact angle is less than 35 degree.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in the technology of this area
Personnel are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into the present invention
Protection domain.
Embodiment and comparative example
Embodiment involved in the present invention and the formula of comparative example are as shown in table 1, the official's polyurethane of hydrophilic three described in table
Acrylate is to be prepared by the following method to obtain, and wherein amount of solid content is 50%:
With the PEG of different number-average molecular weights, (used in embodiment 1-3, molecular weight is respectively 1500, and 4-6 is molecular weight
2000；In comparative example 1-2, in the molecular weight of PEG respectively 1500, comparative example 3-4, the molecular weight of PEG is 2000；Comparative example 5 and 6
Molecular weight be respectively 600 and 3000) with isoflurane chalcone diisocyanate (IPDI), at 70～75 DEG C in ethyl acetate react
2-3 hour, obtain the polyurethane resin of both-end NCO；It is subsequently adding trimethylolpropane, reacts at 70～75 DEG C
1-2 hour, obtain the polyurethane resin of three terminal isocyanate group；It is eventually adding 2-(Acryloyloxy)ethanol, under 70-75 degree, reacts 2-
3 hours, obtain corresponding hydrophilic three official's urethane acrylate.Wherein Macrogol 2000, IPDI, trimethylolpropane,
The mole ratio of 2-(Acryloyloxy)ethanol is 6:9:1:3.
The compound method of described embodiment and comparative example coating composition is as follows:
Accurately weigh described hydrophilic three official's urethane acrylate, hydrophobicity light-cured resin, hydrophilic photocuring list
Body and solvent, mix 30 minutes；Add light trigger and auxiliary agent, mix 10 minutes the most prepared, keep in Dark Place.Described solvent is
Ethyl acetate, butyl acetate and isopropanol, three's weight ratio is 2:3:1.In embodiment and comparative example, the weight of solvent is other
3 times of component weight, other scope being omitted here in 2-4 times.Using PET as base material, coating (30% contains admittedly) is used
No. 10 line rod coating, on its surface, is put into 60 DEG C of baking oven 1min, is solidified through UV afterwards, and energy is 500mJ/cm2。
Performance detects
Respectively to embodiment 1～5 and the coating for preparing of comparative example 1～3 carry out performance detection, measure the attachment of coating
Power, pencil hardness, wearability, initial stage water contact angle and sustained water contact angle performance.Concrete outcome is shown in Table 1.
The method of specific performance detection project and correspondence is as follows:
One, adhesive force
Use hundred lattice methods, with 3M Pressure sensitive adhesive tape, specimen page adhesive force is tested.
Appraisal procedure:
5B-scribing edge is smooth, line edge and intersection all without peeling paint；
4B-has the peeling paint of small pieces in the intersection rule, and the gross area that comes off is less than 5%；
3B-has a peeling paint of small pieces at the edge of line and intersection, and come off the gross area 5～15% it
Between；
2B-has a sheet of peeling paint at the edge of line and intersection, and come off the gross area 15～35% it
Between；
1B-has a sheet of peeling paint at the edge of line and intersection, and come off the gross area 35～65% it
Between；
0B-has sheet of peeling paint at the edge of line and intersection, and the gross area that comes off is more than 65%.
Two, pencil hardness
With reference to standard GB/T/T6739 " hardness of paint film pencil algoscopy ".
Three, anti-wear performance
Using 0000# steel wool, 300g power, one is designated as once back and forth, and the number of times scratched occurs in recording surface.
Appraisal procedure: after the friction of certain number of times, observes whether coating has scratch, is resistant to when record is without scratch
Most Rubbing number.
Four, initial stage hydrophilic angle
Drip 4 μ L deionized waters at the specimen surface being cured, measure with contact angle tester in the range of 20～25 DEG C.
Five, hydrophilic angle is continued
The sample being cured is put into immersion 100h in deionized water, measures with contact angle measurement after drying.
Six: anti-fog properties: the test board that surface temperature is 25 degree is horizontally placed at above the water surface of 80 DEG C at 10cm, observe sample
The time that plate hazes.
X hazed in 1 second
Δ: haze after 10 seconds
Haze after zero: 30 second
◎: do not haze
By embodiment 1～5 and the coating composition of comparative example 1～3 preparation carry out test and include attachment, pencil hardness, resistance to
Mill, initial stage hydrophilic angle and lasting hydrophilic angle and anti-fog performance, its result is as shown in table 1.
Table 1
Note: methoxy poly (ethylene glycol) 1000 acrylate be Polyethylene Glycol number-average molecular weight be the poly-second of methoxyl group two of 1000
Alcohol 1000 acrylate.
As can be seen from Table 1, embodiment 1～6 has preferable anti-fog performance, and initial water contact is below 10 degree,
Water contact angle after soaking for 100 hours is below 35 degree, and anti-fog performance is excellent.In comparative example 1, due to hydrophilic light-cured resin
Addition is higher, and therefore after the final photocuring of gained, gained film hydrophilic is very good, so having a little anti-fog properties, but rises after 10 seconds
After mist, and immersion in 100 hours, water contact angle becomes the biggest.This is owing to the hydrophilic of resin used is very good, vapor atmosphere
After water soaking, final coating due to steam and water-swellable and make hydrophilic segment network from substrate surface depart from, cause coating
Middle hydrophobic part is in the great majority, and makes hydrophilic be substantially reduced.Comparative example 2 is less due to hydrophilic resin addition, therefore institute
After obtaining final photocuring, gained film hydrophilic is the poorest, and initial water contact is relatively big, the most anti-fog properties.Comparative example 3 and embodiment 3
Compare, owing to adding the degree of functionality hydrophobicity light-cured resin less than 6, although initial stage water contact angle is within 10 degree, but
Owing to final coating network will not be close, when causing its Long contact time steam and water soaking, hydrophilic segment network is from base material table
Emaciated face from, and make hydrophilic reduce, so anti-fog performance is poor, protracted hydrophilicity is poor.Comparative example 4 compared with Example 3, uses
Nonionic photocuring hydrophilic monomer, owing to its hydrophilic is less than ionic comonomer, therefore its initial water contact is higher, no
Possesses anti-fog performance.Comparative example 5 compared with Example 2, because using molecular weight relatively low Polyethylene Glycol when hydrophilic resin synthesizes,
The hydrophilic of gained resin is the most very poor, is therefore made into coating photocuring gained coating initial water contact the highest, does not has at all
Have anti-fog properties.On the contrary, in comparative example 6, because using the Polyethylene Glycol that molecular weight is higher when hydrophilic resin synthesizes, gained resin is originally
As water miscible, being therefore made into coating photocuring gained coating initial water contact the highest, initial water contact is relatively low, some
The most anti-fog properties, but haze after 10 seconds, and after immersion in 100 hours, water contact angle becomes the biggest.
The concrete application approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention.It should be pointed out that, above
Embodiment is merely to illustrate the present invention, and is not limited to protection scope of the present invention.Common skill for the art
For art personnel, under the premise without departing from the principles of the invention, it is also possible to make some improvement, these improvement also should be regarded as this
Bright protection domain.
Claims (10)
1. a UV photocuring anti fogging coating composite, it is characterised in that described compositions includes each group of following parts by weight
Point:
Described compositions also includes that solvent, described weight of solvent are 2-4 times of other component weight.
UV photocuring anti fogging coating composite the most according to claim 1, it is characterised in that described hydrophilic photocuring tree
Fat is hydrophilic three official's urethane acrylate.
UV photocuring anti fogging coating composite the most according to claim 2, it is characterised in that described hydrophilic polyurethane third
The synthetic method of olefin(e) acid ester comprises the following steps:
S1, Polyethylene Glycol and diisocyanate are reacted in ethyl acetate, obtain the polyurethane resin of both-end NCO；
S2, the polyurethane resin of both-end NCO react with trimethylolpropane, obtain the poly-ammonia of three terminal isocyanate group
Ester resin；
S3, the polyurethane resin of three terminal isocyanate group react with 2-(Acryloyloxy)ethanol, obtain the described poly-ammonia of hydrophilic three official
Ester acrylate.
UV photocuring anti fogging coating composite the most according to claim 3, it is characterised in that described Polyethylene Glycol, two different
Cyanate, trimethylolpropane, the mole ratio of 2-(Acryloyloxy)ethanol are 6:9:1:3.
5. according to the UV photocuring anti fogging coating composite described in claim 3 or 4, it is characterised in that described Polyethylene Glycol
Number-average molecular weight is 500-3000.
UV photocuring anti fogging coating composite the most according to claim 1, it is characterised in that described hydrophobicity photocuring tree
Fat includes that degree of functionality is higher than urethane acrylate, the degree of functionality epoxy acrylate more than or equal to 2 of 6, degree of functionality is higher than 4
One or more in polyester acrylate.
UV photocuring anti fogging coating composite the most according to claim 1, it is characterised in that described hydrophilic photocuring list
Body include 3-propyl sulfonic acid methacrylic acid potassium, methacrylic acid trimethyl ammonium chloride, allyloxy NPE,
The combination of one or more of allyloxy NPE ammonium sulfate.
UV photocuring anti fogging coating composite the most according to claim 1, it is characterised in that described light trigger is 2-hydroxyl
Base-2-methyl isophthalic acid-phenyl-1-propyl group ketone, 1-[4-(2-hydroxy ethoxy)-phenylene]-2-hydroxyl-2 ', 2 '-dimethyl ethyl ketone,
1-hydroxycyclohexyl phenyl ketone, one or more in 2-methyl isophthalic acid-(4-methyl mercapto phenyl)-2-morpholine-1-acetone
Compositions.
UV photocuring anti fogging coating composite the most according to claim 1, it is characterised in that described solvent is acetic acid second
At least one in ester, butyl acetate, isopropanol, n-butyl alcohol, butyl glycol ether, propylene glycol monomethyl ether, propylene glycol methyl ether acetate；
Described auxiliary agent be levelling agent, polymerization inhibitor at least one.
10. the preparation method of a UV photocuring anti fogging coating composite according to claim 1, it is characterised in that institute
The method of stating comprises the following steps:
Accurately weigh each component, by hydrophilic three official's urethane acrylate, hydrophobicity light-cured resin, hydrophilic photocuring list
Body and solvent mixing；Add light trigger and auxiliary agent, mixing, the most prepared.
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| CN107987304A (en) * | 2017-12-19 | 2018-05-04 | 江南大学 | A kind of preparation method of chitosan-polyurethane anti-fog thin film |
| CN108503791A (en) * | 2018-03-15 | 2018-09-07 | 理奥硅科技有限责任公司 | A kind of long-acting water wetted material |
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| US11807774B2 (en) | 2019-12-20 | 2023-11-07 | Nano And Advanced Materials Institute Limited | Thoroughly modified, functionalized polymeric hard coating material for coatings, methods for synthesizing the same and applications thereof |
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