CN101706593B - Method for enhancing optical effect of holographic optical element - Google Patents
Method for enhancing optical effect of holographic optical element Download PDFInfo
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- CN101706593B CN101706593B CN2009102067560A CN200910206756A CN101706593B CN 101706593 B CN101706593 B CN 101706593B CN 2009102067560 A CN2009102067560 A CN 2009102067560A CN 200910206756 A CN200910206756 A CN 200910206756A CN 101706593 B CN101706593 B CN 101706593B
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Abstract
The invention discloses a method for enhancing the optical effect of a holographic optical element. In an embodiment, the method comprises the steps of: (1) providing a coating and a solvent, wherein the coating comprises resin accounting for 10-40 percent of the total weight of the components; the resin comprises methacrylic ester polymer and fat-soluble cellulose or cellulose derivative; the methacrylic ester polymer has a glass transition temperature of between 60 and 100 DEG C and molecular weight of between 70,000 and 150,000; and the weight ratio of the methacrylic ester polymer to the fat-soluble cellulose or the cellulose derivative is about 1:0.2-2; and (2) coating the coating on the holographic optical element. The method can enhance the optical effect of the holographic opticalelement, so that the holographic color is more brilliant.
Description
Technical field
The application relates to field of anti-counterfeit technology, relates more specifically to the holographic optics field of anti-counterfeit technology.
Background technology
Because can visual identification directly perceived, anti-fake product if any the holographic optics anti-counterfeiting technologies that adopt on valency security, I.D., passport, the tax reciept more as false proof means.Because the eye-observation image mainly is the effect of reflected light to people's optic nerve, so for hologram image, of greatest concern is the reflecting effect in diffraction grating reflection horizon.Reflective light intensity, then hologram pattern distinctness, clear.
When diffraction grating adopts reflection horizon such as zinc sulphide, copper, silicon dioxide because itself transparency height, evaporation back on the optical coating to reflection of incident light a little less than, therefore can't clearly show the diffracting effect of diffraction grating.
Summary of the invention
The application provides the method that strengthens optical effect of holographic optical element, and it comprises:
(1) provide coating, this coating comprises and accounts for its general assembly (TW)
About 10% to about 40% resin, described resin comprises methacrylate polymers and fat-soluble cellulose or cellulose derivative, wherein said methacrylate polymers glass temperature is about 60 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, described methacrylate polymers and described cellulose or the cellulose derivative relative weight ratio in described coating is about 1: 0.2-2; With
Solvent; And
(2) described coating is applied on the holographic optical elements (HOE).
Embodiment
Except as otherwise noted, " rudimentary " in term used herein " lower fatty acid ", " lower alkyl esters ", " lower alkyl ketone " and " lower alkyl alcohol " means and contains 1-10 carbon atom, preferably contains 1-6 carbon atom, more preferably contains 1-4 carbon atom.
Term used herein " alkyl " comprises the straight or branched alkyl.
Term used herein " substituting group " expression halogen, hydroxyl, C
1-4Alkyl, halo C
1-4Alkyl etc.The instantiation of alkyl comprises methyl, ethyl, propyl group, isopropyl, butyl, isobutyl.The instantiation of halogen comprises fluorine, chlorine, bromine.The preferred substituted number is 1-3, more preferably 1-2.
The application's method comprises and at first prepares coating that this coating comprises resin, methacrylate polymers and the fat-soluble cellulose or the cellulose derivative of molecular weight or high molecular during described resin comprises.
The use amount of resin can account for about 10% to about 40% of coating general assembly (TW).
Can be used for the middle molecular weight of the application's method or the glass temperature of high molecular methacrylate polymers is about 60 ℃ to about 100 ℃, preferred about 80 ℃ to about 100 ℃, and more preferably from about 90 ℃ to about 100 ℃, even more preferably from about 95 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, preferred about 80,000 to about 130,000, more preferably from about 90,000 to about 120,000, even more preferably from about 90,000 to about 110,000.
At the resin that is used for the application's method, the weight ratio of methacrylate polymers and cellulose or cellulose derivative is preferably about 1: 0.2-2.In one embodiment, the weight ratio of methacrylate polymers and cellulose or cellulose derivative is 1: 0.33.In another embodiment, the weight ratio of methacrylate polymers and cellulose or cellulose derivative is 1: 0.5.In another embodiment, the weight ratio of methacrylate polymers and cellulose or cellulose derivative is 1: 2.
The middle molecular weight or the high molecular methacrylate polymers that can be used for the application's method can be the multipolymer of two or more methacrylic acid lower alkyl esters.In one embodiment, use methyl methacrylate/butyl methacrylate copolymer.
The middle molecular weight or the high molecular methacrylate polymers that can be used for the application's method also can be the homopolymer of methacrylic acid lower alkyl esters, as methylmethacrylate polymer, Jia Jibingxisuanyizhi polymkeric substance, butyl methacrylate polymkeric substance, isobutyl methacrylate polymkeric substance and metering system tert-butyl acrylate polymkeric substance.
The cellulose or the cellulose derivative that can be used for the application's method can be cellulose acetate propionate or cellulose nitrate.The example of cellulose acetate propionate includes but not limited to CAP504-0.2, CAP482-0.5, CAP482-20, the 371A2R30010 that U.S. Yi Shi Man produces.When using cellulose nitrate, its nitrogen content is about 10.8% to about 12.6%, preferred about 11.6%.
The coating that is used for the application's method also comprises solvent, one or more in the benzene that described solvent is selected from benzene, replaced by one or more substituting groups, lower fatty acid lower alkyl esters, lower alkyl ketone, the lower alkyl alcohol.
The preferred embodiment of described solvent includes but not limited to toluene, chlorobenzene, dimethylbenzene, butyl acetate, acetone, butanone, methyl isobutyl ketone, butanols, isopropyl alcohol, diacetone alcohol.
The coating that can be used for the application's method also can comprise other adjuvant commonly used in the coating, for example adhesion promoter certainly.The component that those of ordinary skill in the art uses according to reality can easily be selected the kind and the consumption of these adjuvants.
In certain embodiments, the coating that is used for the application's method comprises the resin that accounts for its component general assembly (TW) about 10% to about 40%, described resin comprises multipolymer and the fat-soluble cellulose or the cellulose derivative of two or more alkyl methacrylates, the glass temperature of the multipolymer of wherein said two or more alkyl methacrylates is about 60 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, the multipolymer of described two or more alkyl methacrylates and described cellulose or the cellulose derivative relative weight ratio in described coating is about 1: 0.2-2; And solvent.
In certain embodiments, the coating that is used for the application's method comprises the resin that accounts for its component general assembly (TW) about 10% to about 40%, described resin comprises multipolymer and the fat-soluble cellulose or the cellulose derivative of two or more alkyl methacrylates, the glass temperature of the multipolymer of wherein said two or more alkyl methacrylates is about 60 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, the multipolymer of described two or more alkyl methacrylates and described cellulose or the cellulose derivative relative weight ratio in described coating is about 1: 0.2-2; About 1% to about 5% adhesion promoter; And solvent.
In certain embodiments, the coating that is used for the application's method comprises the resin that accounts for its component general assembly (TW) about 10% to about 40%, described resin comprises homopolymer and the fat-soluble cellulose or the cellulose derivative of alkyl methacrylate, the glass temperature of the homopolymer of wherein said alkyl methacrylate is about 60 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, the homopolymer of described alkyl methacrylate and described cellulose or the cellulose derivative relative weight ratio in described coating is about 1: 0.2-2; And solvent.
In certain embodiments, the coating that is used for the application's method comprises the resin that accounts for its component general assembly (TW) about 10% to about 40%, described resin comprises homopolymer and the fat-soluble cellulose or the cellulose derivative of alkyl methacrylate, the glass temperature of the homopolymer of wherein said alkyl methacrylate is about 60 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, the homopolymer of described alkyl methacrylate and described cellulose or the cellulose derivative relative weight ratio in described coating is about 1: 0.2-2; About 1% to about 5% adhesion promoter; And solvent.
In certain embodiments, the coating that is used for the application's method comprises the resin that accounts for its component general assembly (TW) about 10% to about 40%, described resin comprises methacrylate polymers and cellulose acetate propionate, the glass temperature of wherein said methacrylate polymers is about 60 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, and described methacrylate polymers and the described cellulose acetate propionate relative weight ratio in described coating is about 1: 0.2-2; And solvent.
In certain embodiments, the coating that is used for the application's method comprises the resin that accounts for its component general assembly (TW) about 10% to about 40%, described resin comprises methacrylate polymers and cellulose acetate propionate, the glass temperature of wherein said methacrylate polymers is about 60 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, and described methacrylate polymers and the described cellulose acetate propionate relative weight ratio in described coating is about 1: 0.2-2; About 1% to about 5% adhesion promoter; And solvent.
In certain embodiments, the coating that is used for the application's method comprises the resin that accounts for its component general assembly (TW) about 10% to about 40%, described resin comprises methacrylate polymers and cellulose nitrate, the glass temperature of wherein said methacrylate polymers is about 60 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, and described methacrylate polymers and the described cellulose nitrate relative weight ratio in described coating is about 1: 0.2-2; And solvent.
In certain embodiments, the coating that is used for the application's method comprises the resin that accounts for its component general assembly (TW) about 10% to about 40%, described resin comprises methacrylate polymers and cellulose nitrate, the glass temperature of wherein said methacrylate polymers is about 60 ℃ to about 100 ℃, molecular weight is about 70,000 to about 150,000, and described methacrylate polymers and the described cellulose nitrate relative weight ratio in described coating is about 1: 0.2-2; About 1% to about 5% adhesion promoter; And solvent.
The application's method also comprises uses the method that well known to a person skilled in the art that coating as herein described is applied on the holographic optical elements (HOE) such as securities, I.D., passport, tax reciept, and coating method comprises for example roller coat, brushing or printing.Compare with the holographic optical elements (HOE) of uncoated the application's coating, the diffracting effect of the holographic optical elements (HOE) of coating the application coating significantly strengthens.
Embodiment
The application further specifies with following embodiment.
Embodiment 1
(1) prepare coating by following component and method:
Methyl methacrylate/butyl methacrylate copolymer (101) 20
Cellulose acetate propionate (CAP-482-0.5) 10
Butanone 30
Butyl acetate 25
Toluene 15
(CAP-482-0.5 Yi Shiman) adds in the mixed solvent of being made up of the toluene of the butyl acetate of the butanone of 30 weight portions, 25 weight portions, 15 weight portions with the cellulose acetate propionate of 10 weight portions.Stir the mixture, the methyl methacrylate/butyl methacrylate copolymer of adding 20 weight portions after dissolving extremely fully (101, Shanghai Chemical Plant, molecular weight is 100,000, glass temperature is 98 ℃), stir, obtain the application's coating.
(2) by roll coating model the coating that obtains in (1) is applied on the PET film that is coated with zinc sulphide and comprises diffraction grating.
Embodiment 2
(1) prepare coating by following component and method:
Methyl methacrylate/butyl methacrylate copolymer (101) 30
Cellulose nitrate 10
Butanone 30
Butyl acetate 20
Diacetone alcohol 7
Chloridized polyolefin (CP343-1) 3
The cellulose nitrate (U.S. Hercules Inc. production) of 10 weight portions is added in the mixed solvent of being made up of the diacetone alcohol of the butyl acetate of the butanone of 30 weight portions, 20 weight portions, 7 weight portions.Stir the mixture, add the methyl methacrylate/butyl methacrylate copolymer (101, Shanghai Chemical Plant) of 30 weight portions to dissolving back fully, stirring and dissolving.(CP343-1 Yi Shiman), stirs, and obtains the application's coating to add the chloridized polyolefin of 3 weight portions at last.(2) by the brushing mode coating that obtains in (1) is applied on the PET film that is coated with silicon dioxide and comprises diffraction grating.
Embodiment 3
(1) prepare coating by following component and method:
Methyl methacrylate/butyl methacrylate copolymer (101) 5
Cellulose nitrate 10
Butanone 50
Butyl acetate 35
The cellulose nitrate of 10 weight portions (U.S. Hercules Inc. produces, nitrogen content 11.6%) is joined in the mixed solvent of being made up of the butyl acetate of the butanone of 50 weight portions, 35 weight portions.Stir,, be stirred to dissolving fully, obtain the application's coating to dissolving methyl methacrylate/butyl methacrylate copolymer (101, Shanghai Chemical Plant) that the back adds 5 weight portions fully.(2) by mode of printing the coating that obtains in (1) is applied on the BOPP film that is coated with copper and comprises diffraction grating.
Embodiment 4 optical effect contrast tests
The sample that scribbles coating that obtains among the embodiment of the present application 1-3 and the sample of uncoated these coatings are observed contrast.With 1,2,3,4 and 5 sharpness of representing in various degree, 1 expression is very fuzzy, and 5 expressions are very clear.Observations is as shown in table 1.
Table 1
| Sample | Embodiment 1 | Embodiment 2 | Embodiment 3 | The sample of uncoated coating |
| Sharpness | 5 | 5 | 4 | 2 |
The result shows that its optic metachromatic effect of sample of coating coating is fairly obvious, the formed clear picture of diffraction grating, and the brightness height is easy to observe.And the sample optic metachromatic DeGrain of uncoated above-mentioned coating, the formed image color obfuscation of diffraction grating is unfavorable for observing anti-counterfeiting mark.
Though the application specifies with foregoing description and specific embodiment, the application is not so limited.The application's protection domain is limited by the claim in the appended claims, anyly is equal to replacement to what technical characterictic in the claim carried out, all should belong to the application institute restricted portion.
Claims (15)
1. strengthen the method for optical effect of holographic optical element, it comprises
(1) provide coating, described coating comprises:
Account for the resin of its component general assembly (TW) 10% to 40%, described resin comprises methacrylate polymers, described resin also comprises fat-soluble cellulose or cellulose derivative, the glass temperature of wherein said methacrylate polymers is 60 ℃ to 100 ℃, molecular weight is 70,000 to 150,000, described methacrylate polymers and described fat-soluble cellulose or described methacrylate polymers and the relative weight ratio of described cellulose derivative in described coating are 1: 0.2-1: 2; With
Solvent; And
(2) described coating is applied on the described holographic optical elements (HOE).
2. method according to claim 1, wherein said coating also comprise the adhesion promoter that accounts for its component general assembly (TW) 1% to 5%.
3. method according to claim 1, wherein said methacrylate polymers are the multipolymer of two or more alkyl methacrylates.
4. method according to claim 2, wherein said methacrylate polymers are the multipolymer of two or more alkyl methacrylates.
5. method according to claim 3, wherein said methacrylate polymers are methyl methacrylate and butyl methacrylate copolymer.
6. method according to claim 4, wherein said methacrylate polymers are methyl methacrylate and butyl methacrylate copolymer.
7. method according to claim 1, wherein said methacrylate polymers are the homopolymer of alkyl methacrylate.
8. method according to claim 2, wherein said methacrylate polymers are the homopolymer of alkyl methacrylate.
9. according to the described method of arbitrary claim among the claim 1-8, wherein said fat-soluble cellulose or cellulose derivative are cellulose acetate propionate.
10. method according to claim 1, wherein said fat-soluble cellulose or cellulose derivative are that nitrogen content is 10.8% to 12.6% cellulose nitrate.
11. method according to claim 2, wherein said fat-soluble cellulose or cellulose derivative are nitrogen content is 10.8% to 12.6% cellulose nitrate.
One or more in the benzene that 12. according to the described method of arbitrary claim among claim 1-8 and the 10-11, wherein said solvent is selected from benzene, replaced by one or more substituting groups, lower fatty acid lower alkyl esters, lower alkyl ketone, the lower alkyl alcohol.
One or more in the benzene that 13. method according to claim 9, wherein said solvent be selected from benzene, replaced by one or more substituting groups, lower fatty acid lower alkyl esters, lower alkyl ketone, the lower alkyl alcohol.
14. method according to claim 12, wherein said solvent are one or more in toluene, chlorobenzene, dimethylbenzene, butyl acetate, acetone, butanone, methyl isobutyl ketone, butanols, isopropyl alcohol, the diacetone alcohol.
15. method according to claim 13, wherein said solvent are one or more in toluene, chlorobenzene, dimethylbenzene, butyl acetate, acetone, butanone, methyl isobutyl ketone, butanols, isopropyl alcohol, the diacetone alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102067560A CN101706593B (en) | 2009-11-09 | 2009-11-09 | Method for enhancing optical effect of holographic optical element |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102067560A CN101706593B (en) | 2009-11-09 | 2009-11-09 | Method for enhancing optical effect of holographic optical element |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003039864A1 (en) * | 2001-11-07 | 2003-05-15 | Arkwright Incorporated | Ink-jet printable composite media having a holographic pattern on their imaging surfaces |
| WO2005049745A1 (en) * | 2003-11-14 | 2005-06-02 | Wolstenholme International Limited | Printing composition |
| JP2007093799A (en) * | 2005-09-27 | 2007-04-12 | Fujifilm Corp | Optical recording medium and its manufacturing method |
| CN101059654A (en) * | 2007-04-19 | 2007-10-24 | 上海复旦天臣新技术有限公司 | Photolithagraphic diffractive image false-proof film and its preparation method |
| CN101190955A (en) * | 2007-11-23 | 2008-06-04 | 中南林业科技大学 | Synthesis technique of acrylic resin for holographic dope |
-
2009
- 2009-11-09 CN CN2009102067560A patent/CN101706593B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003039864A1 (en) * | 2001-11-07 | 2003-05-15 | Arkwright Incorporated | Ink-jet printable composite media having a holographic pattern on their imaging surfaces |
| WO2005049745A1 (en) * | 2003-11-14 | 2005-06-02 | Wolstenholme International Limited | Printing composition |
| JP2007093799A (en) * | 2005-09-27 | 2007-04-12 | Fujifilm Corp | Optical recording medium and its manufacturing method |
| CN101059654A (en) * | 2007-04-19 | 2007-10-24 | 上海复旦天臣新技术有限公司 | Photolithagraphic diffractive image false-proof film and its preparation method |
| CN101190955A (en) * | 2007-11-23 | 2008-06-04 | 中南林业科技大学 | Synthesis technique of acrylic resin for holographic dope |
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| CN101706593A (en) | 2010-05-12 |
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