CN108047987B - A kind of sun polarized ophthalmic lenses glue and preparation method thereof - Google Patents
A kind of sun polarized ophthalmic lenses glue and preparation method thereof Download PDFInfo
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- CN108047987B CN108047987B CN201711457971.9A CN201711457971A CN108047987B CN 108047987 B CN108047987 B CN 108047987B CN 201711457971 A CN201711457971 A CN 201711457971A CN 108047987 B CN108047987 B CN 108047987B
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials For Medical Uses (AREA)
- Polarising Elements (AREA)
Abstract
The present invention relates to a kind of sun polarized ophthalmic lenses glue and preparation method thereof, belong to optics polarization element technical field, it is bonding with TAC film (poly- cellulose triacetate film) to can be used for PVA film (polyvinyl alcohol film) in sun polarized spectacle lens polarizing layer, glue has preferable mobility, the coating of sunglasses polarizing layer is uniform after bonding, is not easy alice, and has the performances such as fastness is high, caking property is strong, bending-resistant, humidity resistance are good, high temperature resistant is non-discolouring.
Description
Technical field
The invention belongs to optics polarization element technical fields, in particular to sun polarized ophthalmic lenses glue；In addition
The invention further relates to the preparation methods of sun polarized ophthalmic lenses glue.
Background technique
In sunglasses manufacturing industry, general sunglasses can only utilize the effect of dim light, light can not be filtered, so only
The intensity of dazzle, ultraviolet light etc. can be lowered, and these harmful light can not be obstructed completely, so its function only reduces eyes
Injury.Polarized lenses are then because having polarisation property, so caused by can obstructing completely because of various factors such as scattering, flexion, reflections
Dazzling dazzle.The harmful ultraviolet light of human eye will can also be obstructed completely simultaneously, when making one the long term activity of earthquake under strong light, eye
Eyeball is not easy tired, reaches the function of really protecting, and the thing seen can be allowed apparent, three-dimensional.It is particularly suitable for summer driving
It is worn in outdoor activity.
But the polaroid in this sunglasses, manufacturing cost are high, it is more difficult to manufacture.It requires the TAC for having fine performance
Film, PVA film and the glue for being bonded TAC film and PVA film, and this sunglasses polaroid is to weatherability, humidity resistance, press-bending
The performances such as intensity have high requirements.
Summary of the invention
The purpose of the present invention is on the basis of existing technology, providing a kind of sun polarized ophthalmic lenses glue, can solve
The certainly performances such as sunglasses polaroid weatherability, humidity resistance, bending-resistant.
Another mesh of the invention is to provide a kind of preparation method of above-mentioned sun polarized ophthalmic lenses glue.
Technical scheme is as follows:
A kind of sun polarized ophthalmic lenses glue, it is mainly made of the component of following mass parts: the object containing alcoholic extract hydroxyl group
1.0~7.5 parts of matter, 1.0~7.5 parts of SPM-01, glyoxal or 1.5~6.5 parts of glyoxal solution, 0.05~0.45 part of alcohol, boron
1.5~6.0 parts, 1.5~6.0 parts of pH adjusting agent, 70~93 parts of water of acid.
In a preferred embodiment, glue of the invention is mainly made of the component of following mass parts: containing alcoholic extract hydroxyl group
3.0~5.5 parts of substance, 3.0~4.5 parts of SPM-01, glyoxal or 2.0~5.5 parts of glyoxal solution, 0.1~0.3 part of alcohol, boron
3.0~4.5 parts, 3.0~4.5 parts of pH adjusting agent, 75~87 parts of water of acid.
In a kind of more preferable scheme, glue of the invention is mainly made of the component of following mass parts: containing alcoholic extract hydroxyl group
4.5~5.5 parts of substance, 3.5~4.5 parts of SPM-01, glyoxal or 3.0~5.0 parts of glyoxal solution, alcohol 0.15~0.25
Part, 3.2~4.0 parts of boric acid, 3.2~4.0 parts of pH adjusting agent, 78~84 parts of water.
In a kind of scheme, the substance containing alcoholic extract hydroxyl group in the present invention is the Z- of the Nippon Synthetic Chemical Industry Co., Ltd
200, Z-300 or combination.
In a kind of scheme, the SPM-01 in the present invention is prepared by the Nippon Synthetic Chemical Industry Co., Ltd.
In another scheme, the mass fraction of glyoxal solution is 35~45%.
In another preferred embodiment, the mass fraction of glyoxal solution is 38~42%.Specifically, glyoxal solution
Mass fraction is 38% or 39% or 40% or 41% or 42%.
In a kind of scheme, the alcohol in the present invention can be selected from one of methanol, ethyl alcohol, propyl alcohol or isopropanol or several
Kind.
In a preferred embodiment, the present invention in alcohol can selected from methanol, ethyl alcohol or propyl alcohol or one or more of.
In a kind of more preferable scheme, the alcohol in the present invention can be selected from methanol, ethyl alcohol or propyl alcohol.
In another scheme, the pH adjusting agent in the present invention can be selected from one of hydrochloric acid, sulfuric acid, acetic acid or nitric acid
Or it is several.
In another preferred embodiment, the pH adjusting agent in the present invention can be selected from hydrochloric acid, sulfuric acid, acetic acid or nitric acid.
In another preferred embodiment, the pH adjusting agent in the present invention is hydrochloric acid.
A kind of preparation method of sun polarized ophthalmic lenses glue, it the following steps are included:
(1) after the substance containing alcoholic extract hydroxyl group being dissolved in water, stirred, then gentle agitation is risen；
(2) 30~40 DEG C are cooled to, SPM-01 is added, stirring adds pH adjusting agent and adjusts pH value to 5-6；
(3) glyoxal or glyoxal solution, stirring is added；
(4) aqueous solution of prepared pure and mild boric acid, stirring is added；
(5) by step (4) afterwards gained mixture filtering to get.
In a kind of scheme, after the substance containing alcoholic extract hydroxyl group first stirs 1.5~2.5h after dissolving in water in step (1),
Gentle agitation is risen again；Described liter of gentle agitation is divided into two stages, and the first stage is warming up to 55~65 DEG C, stirs 1.5~2.5h；
Second stage is warming up to 90~95 DEG C, stirs 1.5~2.5h.
In a preferred embodiment, the first stage is warming up to 57~62 DEG C, specifically, temperature can for 57 DEG C or 58 DEG C,
Or 59 DEG C or 60 DEG C or 61 DEG C or 62 DEG C.
In a kind of more preferable scheme, the mass parts of water are 77~83 parts in step (1).
Wherein, mixing time is 0.5~1.5h in step (2).
In a preferred embodiment, step (2) cools to 30~35 DEG C, specifically, temperature can for 31 DEG C or 32 DEG C,
Or 33 DEG C or 34 DEG C or 35 DEG C.
Further, pH adjusting agent can be selected from one or more of hydrochloric acid, sulfuric acid, acetic acid or nitric acid in step (2).
Preferably, pH adjusting agent can be selected from hydrochloric acid, sulfuric acid, acetic acid or nitric acid in step (2).
It is highly preferred that pH adjusting agent is selected from hydrochloric acid in step (2).
In another preferred embodiment, the mass fraction of glyoxal solution is 35~45% in step (3), and mixing time is
20~40min.
In a kind of scheme, wherein in step (4) in the aqueous solution of pure and mild boric acid, wherein the mass parts of water be 3.0~
4.5 part.
In a preferred embodiment, wherein in step (4) in the aqueous solution of pure and mild boric acid, wherein the mass parts of water are 3.2
~4.0 parts.
In a kind of scheme, alcohol can be selected from one or more of methanol, ethyl alcohol, propyl alcohol or isopropanol in step (4).
In a preferred embodiment, alcohol can be selected from one or more of methanol, ethyl alcohol or propyl alcohol in step (4).
In a preferred embodiment, alcohol can be selected from methanol, ethyl alcohol or propyl alcohol in step (4).
Mixing time is 0.5~1.5h in step (4).
A kind of sun polarized ophthalmic lenses glue prepared by the present invention, viscosity be 10~50Mpas, preferably 15~
30Mpa·s；The solid content of the glue is 5.0 ± 0.5%.
Using technical solution of the present invention, advantage is as follows:
A kind of sun polarized ophthalmic lenses glue provided by the invention and preparation method thereof, can be used for sun polaroid glasses mirror
PVA film (polyvinyl alcohol film) is bonding with TAC film (poly- cellulose triacetate film) in piece polarizing layer, and glue has preferable stream
Dynamic property, after bonding the coating of sunglasses polarizing layer uniformly, be not easy alice, and have that fastness is high, caking property is strong, bending-resistant, resistance to
The performances such as Hou Xing, humidity resistance are good, high temperature resistant is non-discolouring.
Specific embodiment
A kind of sun polarized ophthalmic lenses glue of the invention and preparation method thereof is made by following embodiment further
Explanation, but these embodiments do not form any restrictions to the present invention.
Auxiliary agent C, solution D and preparation method step in following embodiment and comparative example on resourcing manifest 8. in auxiliary agent
C and auxiliary agent solution D refer to that auxiliary agent C and auxiliary agent D are added to the water the mixed solution of preparation together.
Embodiment 1
1, prepared by material:
2, preparation method
(1) glue matches
For preparing 8625g finished product glue, table 1 is glue formula and mass parts.In actual production, with the matter of each component
It feeds intake subject to amount part.
1 glue raw material inventory of table
Note: * auxiliary agent E dosage, which is subject to, actually can be adjusted to 5~6 for glue pH value.
(2) process for preparation
1. a small amount of into beaker be repeatedly added Z-200, be subject to not conglomeration, after adding at 25 DEG C insulated and stirred 2h；
2. being warming up to 60 DEG C of insulated and stirred 2h；
3. being warming up to 90-95 DEG C of insulated and stirred 2h；
4. being cooled to 33 DEG C with water-bath；
5. after system temperature is down to 33 DEG C, insulated and stirred, and it is slowly added to auxiliary agent A, 1h is stirred after adding；
6. used additives E regulation system pH value is to 5-6；
7. being slowly added to auxiliary agent B into system, continue to stir 30min after adding；
8. being slowly added to auxiliary agent C and auxiliary agent solution D into system again, speed is subject to system without floccule generation, adds
After continue stir 1h；
9. filtering, viscosity is measured.
(3) glue performance index
2 glue performance indexes of table
| Test item | Normal value |
| Solid content (%) | 5.0±0.5 |
| Viscosity (Mpas) | 30±15 |
| It uses temperature (DEG C) | 25±2.0 |
Embodiment 2
1, prepared by material:
2, preparation method
(1) glue matches
For preparing 8640g finished product glue, table 3 is glue formula and mass parts.In actual production, with the matter of each component
It feeds intake subject to amount part.
3 glue raw material inventory of table
Note: * auxiliary agent E dosage, which is subject to, actually can be adjusted to 5~6 for glue pH value.
(2) process for preparation
1. a small amount of into beaker be repeatedly added Z-300, be subject to not conglomeration, after adding at 25 DEG C insulated and stirred 2h；
2. being warming up to 60 DEG C of insulated and stirred 2h；
3. being warming up to 90-95 DEG C of insulated and stirred 2h；
4. being cooled to 33 DEG C with water-bath；
5. after system temperature is down to 33 DEG C, insulated and stirred, and it is slowly added to auxiliary agent A, 1h is stirred after adding；
6. used additives E regulation system pH value is to 5-6；
7. being slowly added to auxiliary agent B into system, continue to stir 30min after adding；
8. being slowly added to auxiliary agent C and auxiliary agent solution D into system again, speed is subject to system without floccule generation, adds
After continue stir 1h；
9. filtering, viscosity is measured.
(3) glue performance index
4 glue performance indexes of table
| Test item | Normal value |
| Solid content (%) | 5.0±0.5 |
| Viscosity (Mpas) | 30±15 |
| It uses temperature (DEG C) | 25±2.0 |
Embodiment 3
1, prepared by material:
2, preparation method
(1) glue matches
For preparing 8650g finished product glue, table 5 is glue formula and mass parts.In actual production, with the matter of each component
It feeds intake subject to amount part.
5 glue raw material inventory of table
Note: * auxiliary agent E dosage, which is subject to, actually can be adjusted to 5~6 for glue pH value.
(2) process for preparation
1. a small amount of into beaker be repeatedly added Z-200 and Z-300, it is subject to not conglomeration, keeps the temperature and stir at 25 DEG C after adding
Mix 2h；
2. being warming up to 60 DEG C of insulated and stirred 2h；
3. being warming up to 90-95 DEG C of insulated and stirred 2h；
4. being cooled to 33 DEG C with water-bath；
5. after system temperature is down to 33 DEG C, insulated and stirred, and it is slowly added to auxiliary agent A, 1h is stirred after adding；
6. used additives E regulation system pH value is to 5-6；
7. being slowly added to auxiliary agent B into system, continue to stir 30min after adding；
8. being slowly added to auxiliary agent C and auxiliary agent solution D into system again, speed is subject to system without floccule generation, adds
After continue stir 1h；
9. filtering, viscosity is measured.
(3) glue performance index
6 glue performance indexes of table
| Test item | Normal value |
| Solid content (%) | 5.0±0.5 |
| Viscosity (Mpas) | 30±15 |
| It uses temperature (DEG C) | 25±2.0 |
Comparative example 1
1, prepared by material:
2, preparation method
(1) glue matches
For preparing 8319g finished product glue, table 7 is glue formula and mass parts.In actual production, with the matter of each component
It feeds intake subject to amount part.
7 glue raw material inventory of table
Note: * auxiliary agent E dosage, which is subject to, actually can be adjusted to 5~6 for glue pH value.
(2) process for preparation
1. a small amount of into beaker be repeatedly added Z-200, be subject to not conglomeration, after adding at 25 DEG C insulated and stirred 2h；
2. being warming up to 60 DEG C of insulated and stirred 2h；
3. being warming up to 90-95 DEG C of insulated and stirred 2h；
4. being cooled to 33 DEG C with water-bath；
5. after system temperature is down to 33 DEG C, insulated and stirred, and it is slowly added to auxiliary agent A, 1h is stirred after adding；
6. used additives E regulation system pH value is to 5-6；
7. being slowly added to auxiliary agent B into system, continue to stir 30min after adding；
8. being slowly added to auxiliary agent C and auxiliary agent solution D into system again, speed is subject to system without floccule generation, adds
After continue stir 1h；
9. filtering, viscosity is measured.
(3) glue performance index
8 glue performance indexes of table
(4) glue is used in test result after polaroid
Test result compares after 9 glue of table is used in polaroid
10 glue of table is used in testing standard after polaroid
Specific test method:
1, high-temperature discoloration is tested: method is 45 ° to cut 2 absorption axiss angles, the small pieces sample having a size of 4.5cm × 6cm
Product measure optical index, then put into 110 DEG C of high-temperature test chamber, toast 5min, measure optical index after taking out cooling.
It is required that the sample after toasting and the sample before baking compare, should not have apparent tone difference (colour fading, the inclined, flavescence of mistake etc.), partially
Vibration degree (∣ Δ P ∣) change no more than 1.5 units, single changing value (∣ Δ Ts ∣ thoroughly) be not more than 1.5 units, a* value (∣ Δ a* ∣) change
Value is not more than 1.5 units, and b* value changing value (Δ b*) is not more than 3 units.
2, sliver is tested: method is to cut the big small sample of A4 1, impregnates 90s in the NaOH solution that concentration is 12%, so
It is cleaned by pure water and toasts 90s in high-temperature test chamber at a temperature of 90 °C after the lye of surface；It will treated 170 μ m-thick TAC
Film cuts 4 (having a size of 35cm × 26cm)；In each compound two panels 170umTAC in sample both sides, it is put into high temperature at a temperature of 90 °C
45min is toasted in chamber, then cuts white edge, is rived intermediate PVA film and TAC film with blade, is checked whether that there are large area
PVA film and TAC film remove, have then sliver test NG.
3, weather resistance: 8 built-in testing samples are torn off release film, coated face is attached in special glass, remembers in glass edge
The model and lot number for recording test sample, are then carried out defoaming treatment (condition are as follows: 50~55 DEG C of temperature) with KA-600 froth breaker, are pressed
Power 6.7Kgf, foam time is 15~20min, and after defoaming terminates, cooling 1 hour just can enter experimental section)；It has handled
After tear protective film off, be divided into three groups: high temperature two panels, low temperature two panels, constant temperature and humidity four, the sample being put into corresponding laboratory apparatus
On product frame.Sample, which is taken out, for 24 hours, after 48h, 96h, 120h, 240h, 300h, 400h, 500h in experiment beginning respectively surveys its polarisation
Degree singleton transmittance, parallel transmitance, intersects transmitance, while observing the apparent variation of sample, such as whether tilting, rolling, is
It is no phenomena such as white edge, come unglued occur.
Claims (9)
1. a kind of sun polarized ophthalmic lenses glue, which is characterized in that it is mainly made of the component of following mass parts: containing alcohol
3.0 ~ 5.5 parts of the substance of hydroxyl, 3.0 ~ 4.5 parts of SPM-01, glyoxal or 2.0 ~ 5.5 parts of glyoxal solution, alcohol 0.1 ~ 0.3
Part, 3.0 ~ 4.5 parts of boric acid, 3.0 ~ 4.5 parts of pH adjusting agent, 75 ~ 87 parts of water；The substance containing alcoholic extract hydroxyl group is Japan's synthesis
Z-200, Z-300 of chemical industry Co., Ltd. or combination；The alcohol in methanol, ethyl alcohol, propyl alcohol or isopropanol one
Kind is several.
2. sun polarized ophthalmic lenses glue according to claim 1, which is characterized in that it is mainly by following mass parts
Component is made: 4.5 ~ 5.5 parts of the substance containing alcoholic extract hydroxyl group, and 3.5 ~ 4.5 parts of SPM-01, glyoxal or glyoxal solution 3.0 ~
5.0 parts, 0.15 ~ 0.25 part of alcohol, 3.2 ~ 4.0 parts of boric acid, 3.2 ~ 4.0 parts of pH adjusting agent, 78 ~ 84 parts of water.
3. sun polarized ophthalmic lenses glue according to claim 1, which is characterized in that the SPM-01 is synthesized by Japan
The preparation of chemical industry Co., Ltd..
4. sun polarized ophthalmic lenses glue according to claim 1, which is characterized in that the quality of the glyoxal solution
Score is 35 ~ 45%.
5. sun polarized ophthalmic lenses glue according to claim 1, which is characterized in that the pH adjusting agent is selected from salt
One or more of acid, sulfuric acid, acetic acid or nitric acid.
6. a kind of preparation method of sun polarized ophthalmic lenses glue as described in claim 1, which is characterized in that it include with
Lower step:
(1) after the substance containing alcoholic extract hydroxyl group being dissolved in water, stirred, then gentle agitation is risen；
(2) 30 ~ 40 DEG C are cooled to, SPM-01 is added, stirring adds pH adjusting agent and adjusts pH value to 5-6；
(3) glyoxal or glyoxal solution, stirring is added；
(4) aqueous solution of prepared pure and mild boric acid, stirring is added；
(5) by step (4) afterwards gained mixture filtering to get.
7. the preparation method of sun polarized ophthalmic lenses glue according to claim 6, which is characterized in that the step
(1) after first stirring 1.5 ~ 2.5 h after dissolution in, then gentle agitation is risen；Described liter of gentle agitation is divided into two stages, first stage
55 ~ 65 DEG C are warming up to, 1.5 ~ 2.5 h are stirred；Second stage is warming up to 90 ~ 95 DEG C, stirs 1.5 ~ 2.5 h.
8. the preparation method of sun polarized ophthalmic lenses glue according to claim 6, which is characterized in that the step
(1) mass parts of water are 77 ~ 83 parts in；Mixing time is 0.5 ~ 1.5h in the step (2)；PH is adjusted in the step (2)
Agent is selected from the one or more of hydrochloric acid, sulfuric acid, acetic acid or nitric acid；In the step (3) mass fraction of glyoxal solution be 35 ~
45%, mixing time is 20 ~ 40 min；In the step (4) in the aqueous solution of pure and mild boric acid, wherein the mass parts of water be 3.0 ~
4.5 part；Alcohol is selected from one or more of methanol, ethyl alcohol, propyl alcohol or isopropanol in the step (4)；It is stirred in the step (4)
Mixing the time is 0.5 ~ 1.5h.
9. the preparation method of sun polarized ophthalmic lenses glue according to claim 8, which is characterized in that the step
(4) in the aqueous solution of pure and mild boric acid, wherein the mass parts of water are 3.2 ~ 4.0 parts.
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| CN201711457971.9A CN108047987B (en) | 2017-12-28 | 2017-12-28 | A kind of sun polarized ophthalmic lenses glue and preparation method thereof |
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|---|---|---|---|
| CN201711457971.9A CN108047987B (en) | 2017-12-28 | 2017-12-28 | A kind of sun polarized ophthalmic lenses glue and preparation method thereof |
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| CN108047987B true CN108047987B (en) | 2019-11-22 |
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| CN109782478B (en) * | 2019-03-21 | 2021-12-24 | 南京汉旗新材料股份有限公司 | TN/STN polarizing film hue control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451052A (en) * | 2008-12-30 | 2009-06-10 | 佛山纬达光电材料有限公司 | Adhesive agent production method for polaroid |
| CN104403632A (en) * | 2014-11-25 | 2015-03-11 | 佛山纬达光电材料有限公司 | Adhesive for iodine polarizer, preparation method of adhesive and iodine polarizer |
| CN106471084A (en) * | 2014-10-14 | 2017-03-01 | 爱克工业株式会社 | Aqueous adhesive |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3307409B2 (en) * | 1991-07-03 | 2002-07-24 | 株式会社クラレ | Woodworking adhesive |
| US9315693B2 (en) * | 2012-08-01 | 2016-04-19 | Essilor International (Compagnie Generale D'optique) | Glyoxal adhesive system and process for manufacturing same |
| DE102014113904A1 (en) * | 2013-09-27 | 2015-04-02 | Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. | Compositions for liquid applicable multifunctional coating films |
| ES2689126T3 (en) * | 2014-01-31 | 2018-11-08 | Essilor International | Polarization structure comprising an adhesive system of glyoxal and polarized lens comprising it |
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2017
- 2017-12-28 CN CN201711457971.9A patent/CN108047987B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451052A (en) * | 2008-12-30 | 2009-06-10 | 佛山纬达光电材料有限公司 | Adhesive agent production method for polaroid |
| CN106471084A (en) * | 2014-10-14 | 2017-03-01 | 爱克工业株式会社 | Aqueous adhesive |
| CN104403632A (en) * | 2014-11-25 | 2015-03-11 | 佛山纬达光电材料有限公司 | Adhesive for iodine polarizer, preparation method of adhesive and iodine polarizer |
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Address after: 211599 No.52, Shidai Avenue, Nanjing Liuhe Economic Development Zone, Nanjing, Jiangsu Province Applicant after: Nanjing Han flag new material Limited by Share Ltd Address before: 211505 Room 301, unit 2, building 402, Hengsheng Park, No. 399, South Xiongzhou Road, Longchi street, Liuhe District, Nanjing 211505, Jiangsu Province Applicant before: Nanjing Han Qi novel material Science and Technology Ltd. |
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