CN101747573B - Polyvinyl alcohol membrane composite and polarizer containing the same - Google Patents
Polyvinyl alcohol membrane composite and polarizer containing the same Download PDFInfo
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- CN101747573B CN101747573B CN2008101865130A CN200810186513A CN101747573B CN 101747573 B CN101747573 B CN 101747573B CN 2008101865130 A CN2008101865130 A CN 2008101865130A CN 200810186513 A CN200810186513 A CN 200810186513A CN 101747573 B CN101747573 B CN 101747573B
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Abstract
The invention relates to a polyvinyl alcohol membrane composite, comprising the following ingredients by weight parts: (a) 100 parts of polyvinyl alcohol; (b) 1-30 parts of multi-alcoholic compound; and (c) 0.001-20 parts of water-solubility polyhedron low-polymerization silsesquioxane compound. The invention further relates to a polarizer containing the polyvinyl alcohol membrane composite.
Description
Technical field
The present invention relates to polyvinyl alcohol (PVA) film composition, can be applicable to blooming, packing film, film for agricultural use, washing film, used for cosmetic film etc., and particularly relates to the light polarizing film composition that Polarizer is used.
Background technology
(Poly Vinyl Alcohol is a kind of stable, nontoxic water-soluble polymer PVA) to polyvinyl alcohol, has good then property, tensile strength, solvent resistance, wear-resisting wiping, oxygen-barrier property and interfacial activity.Because polyvinyl alcohol possesses above-mentioned characteristic, make it be widely used in fields such as each industry such as electronics industry, photoelectricity industry, textile industry, latex industry, this device of plywood industry.In addition, polyvinyl alcohol possesses good system film, and physical propertiess such as the tensile strength after its film forming, tear strength, abrasive wear resistance are all good than other water soluble molecules.Polyvinyl alcohol solution is coated on drum type brake coating machine (drum type coater) or band (belt type coater) formula coating machine, with heated drying mode film forming, the system film mode of then being peeled off is called the solution film-forming method, is polyvinyl alcohol system embrane method commonly used.And especially in opto-electronics such as indicating meter, projector, polyvinyl alcohol film through water swelling, extension, and dyeed after, can obtain light polarizing film (polarizer), itself and three cellulose acetate membrane (Triacetyl Cellulose film, TAC film) after the applying, just make Polarizer (polarizer plate), be one of key part and component in the indicating meter.
The hot water of polyvinyl alcohol film cuts off temperature, is the index of polyvinyl alcohol crystalline thoroughness and amount, can be used for water-absorbent, the solvability of the water or the aqueous solution are done preliminary understanding, and application or following process preparation technology's relevant information is provided.Hot water cut-out temperature is high more, and the crystallinity of polyvinyl alcohol is high more, and hot water resistance is good more.Light polarizing film with polyvinyl alcohol is fabricated to example, improves its hot water and cuts off temperature, can promote its pyritous extensibility, and then improves the polarized light property and the weather resistance of light polarizing film.
Summary of the invention
One of purpose of the present invention just provides a kind of polyvinyl alcohol membrane composite, and prepared polyvinyl alcohol film has higher hot water and cuts off temperature, and hot water resistance is preferable.For reaching above-mentioned and other purpose, method of the present invention mainly is to add a water-soluble polyhedral oligomeric silsesquioxane compound (polyhedral oligomericsilsesquioxane; POSS).
According to one embodiment of the invention, the invention provides a kind of polyvinyl alcohol membrane composite, comprising:
(a) high-molecular polyvinyl alcohol, its polymerization degree are 500～6500, and basicity is at least greater than 75 molar percentages;
(b) many alkylol cpds; And
(c) water-soluble polyhedral oligomeric silsesquioxane compound.
The present invention more provides a kind of Polarizer; be with the prepared polyvinyl alcohol film of aforesaid polyvinyl alcohol membrane composite; be applied to the light polarizing film of indicating meter; this light polarizing film and light polarizing film protective membrane be triacetate cellulose membrane (Triacetyl Cellulose film for example; TAC film) fit after, be the key part and component-Polarizer of indicating meter.
The invention has the advantages that: the present invention utilizes the interpolation of water-soluble polyhedral oligomeric silsesquioxane compound to make heated drying Processing of Preparation time of film forming following process of polyvinyl alcohol membrane composite effectively to shorten or temperature reduces, thereby saves energy consumption and reduce cost.
For above and other objects of the present invention, feature and advantage can be become apparent, cited below particularlyly go out preferred embodiment, be described in detail below:
Embodiment
The present invention be in the preparation of general polyvinyl alcohol film is formed-polyvinyl alcohol (PVA) polymer and many alkylol cpds (polyol), add a water-soluble polyhedral oligomeric silsesquioxane compound again.In general polyvinyl alcohol film preparation technology, the mode how to handle with heated drying promotes hot water cut-out temperature, and the present invention utilizes water-soluble polyhedral oligomeric silsesquioxane compound (polyhedral oligomericsilsesquioxane; POSS) interpolation makes heated drying Processing of Preparation time of film forming following process of polyvinyl alcohol membrane composite effectively to shorten or temperature reduces, and saves energy consumption and the purpose that reduces cost to reach.
Polyvinyl alcohol membrane composite prescription of the present invention is as follows:
(a) polyvinyl alcohol of 100 weight parts (PVA) polymer;
(b) many alkylol cpds of 1～30 weight part are good with 1～20 weight part especially, and 5～18 weight parts are for better; And
(c) the water-soluble polyhedral oligomeric silsesquioxane compound of 0.001～20 weight part is good with 0.001～5 weight part especially, and 0.05～1 weight part is for better.
The polymerization degree of aforementioned high-molecular polyvinyl alcohol is generally 500～10000, is good with 500～6500 scope especially, and basicity is then to be good more than basicity 75 molar percentages, especially with the scope more than 99 molar percentages for better.Aforesaid many alkylol cpds are for having plasticizer character person, generally comprise glycerol (glycerine), polyoxyethylene glycol (Polyethylene Glycol, PEG), trivinyl glycol (triethyleneglycol), divinyl glycol (diethylene glycol), trimethylammonium alcohol propane (trimethylolpropane), or aforesaid combination.
Aforesaid polyhedral oligomeric silsesquioxane compound, because of its special organic/inorganic chemical constitution and nano level structural performance, mainly be applied to nanometer materials weighting agent (WO2008021455) traditionally, and ionic exchange film for fuel cell (US20070190385).The polyhedral oligomeric silsesquioxane compound that the present invention added has more imported the water dissolvable group, as chemical structural formula (I) or structure (II):
Wherein, R is the water dissolvable base, especially with-(CH
2)
3OCH
2CH (OH) CH
2O (C
6H
4) SO
3H ,-O-N (CH
3)
4 +(CAS No.69667-29-4) ,-CH
2CH
2CH
2NH
3Cl (CAS No.150380-11-3) ,-CH
2CH
2(OCH
2CH
2)
mOCH
3(m=13.3) etc. water-soluble functional group is good; X then is an organic radical, and especially alkyl, cycloalkyl, phenyl, many cyclic groups are preferable.The present invention adds water-soluble polyhedral oligomeric silsesquioxane compound and has following advantage:
(1) water-soluble polyhedral oligomeric silsesquioxane compound has water-soluble fluidity and organic group, can increase its mutual solubility to polyvinyl alcohol and many alkylol cpds, makes the transparent good of polyvinyl alcohol film.
(2) the polyhedral oligomeric silsesquioxane structure of polyhedral oligomeric silsesquioxane compound is clear and definite three-D inorganic nanostructure, belongs to molecular level reinforcement material, can strengthen endurance and thermotolerance.And have crystalline high-molecular polyvinyl alcohol and mix, as the agent of molecular level crystallization heterogeneous nucleation, promote the high-molecular polyvinyl alcohol crystallization.
(3) add water-soluble polyhedral oligomeric silsesquioxane compound, the surface of polyvinyl alcohol film is comparatively hydrophobic, and promotes hot water cut-out temperature, and making light polarizing film can be heat-resisting than moisture-proof.
Except above-mentioned major ingredient, polyvinyl alcohol film of the present invention also can be according to the difference of practical application, adds other one or more additive as required, for example interfacial agent, dye pigment, plasticizer, bridging agent, adherence imparting agent etc.
Application facet of the present invention can be applicable to film for packaging, film for agricultural use, washing film, cosmetic film, is particularly useful for the polyvinyl alcohol film of indicating meter Polarizer.The method for making of polyvinyl alcohol film, the any-mode that can suitably use the stock liquid that will be dissolved in water or organic solvent to give solution film-formings such as the film forming hydrostomia method of hydrostomia, teeming practice, signature platen press gives film forming.
Yet, if the light polarizing film of using with liquid-crystal display, a dyeing treatment step of being handled with the dichromatism material must be arranged more, and a prolonged treatment step in order to the orientation state of control dichromatism material.Aforementioned polyvinyl alcohol film is flooded in the staining fluid that contains dichromatism materials such as iodine, make above-mentioned dichromatism material must adsorb on polyvinyl alcohol film, dye, this dichromatism material can use known substance, comprises iodine or organic dye, wherein, iodine has preferable dyeability and regiospecific; In addition, with can stablize obtain have desired the light polarizing film of optical characteristics, this prolonged treatment step is good with uniaxial extension, stretch ratio is generally four times or bigger, is good with five times or bigger person especially, but is not to be defined in this.Above-mentioned polyvinyl alcohol film dyeing treatment step more can add a colouring aid such as saltcake again.
Polyvinyl alcohol film of the present invention; when the light polarizing film used to liquid-crystal display; the blooming of single or multiple lift can be set on its at least one surface; protection as polyvinyl alcohol film; support or possess optical compensation function; for example this blooming can be a light polarizing film protective membrane; its material comprises cellulosetri-acetate (Triacetyl Cellulose; TAC); polyethylene terephthalate (Polyethylene Terephthalate; PET); Polyethylene Naphthalate (Polyethylene Naphthalene-2; 6-dicarboxylate; PEN); polymethylmethacrylate (Polymethylmethacrylate; PMMA); polystyrene (Polystyrene; PS) etc., be good with triacetate cellulose membrane (TAC) especially wherein, but be not to be defined in this.After this polyvinyl alcohol light polarizing film and the applying of this light polarizing film protective membrane, promptly obtain Polarizer (polarizer plate).
Polarizer of the present invention can be applied in liquid-crystal display.For example, Polarizer of the present invention can be arranged on the arbitrary surface or the opposite sides of liquid crystal panel.There is no particular restriction for the kenel of liquid crystal and type of drive, can be TN (twisted-nematic) type liquid crystal, vertical orientation type liquid crystal, IPS (transverse electric field switching) liquid crystal etc.In addition, the formation of liquid crystal panel more comprises diffuser plate, prism array, backlight assembly etc. usually, does not repeat them here.In addition, above-mentioned Polarizer can use with other blooming collocation when practical application, and for example reflectance coating, half-transparent half-reflection are penetrated film, phase shift films (1/2 wavelength and 1/4 wavelength), compensation film for angular field of view etc.In addition, Polarizer of the present invention also can be applicable to other optical articles such as projector, sunglasses.
Polyvinyl alcohol film of the present invention can be made according to following key step: after high-molecular polyvinyl alcohol, many alkylol cpds, water-soluble polyhedral oligomeric silsesquioxane compound are prepared to scale, add that water mixes and heated and stirred it, make the high-molecular polyvinyl alcohol dissolving and the prescription aqueous solution even, wherein Heating temperature is about 70～99 ℃, and heat-up time, a few hours to high-molecular polyvinyl alcohol dissolved fully approximately.Afterwards, the aqueous solution of will filling a prescription is coated on the substrate, and for example glass plate gets final product with the drying at room temperature film forming.Coating method can use various wet type coatings, for example: rotary coating (spin coating), bar-shaped coating (bar coating), cylinder coating (rollcoating), scraper coating (blade coating), dip coated (dip coating) etc.
The hot water of polyvinyl alcohol film cuts off temperature, represent the index of its crystallization thoroughness and amount,, promote hot water and cut off temperature especially for the manufacturing of polyethenol series light polarizing film, better polyvinyl alcohol film high-temp. extensibility be can obtain, and then its polarized light property and thermotolerance promoted.Generally in light polarizing film preparation technology, it is the hot water cut-out temperature (Japanese kokai publication hei 5-245857) that promotes polyvinyl alcohol film in elevated temperature heat drying treatment mode, and the present invention is by adding the mode of water-soluble polyhedral oligomeric silsesquioxane compound, promote polyvinyl alcohol film hot water and cut off temperature, in one embodiment, polyvinyl alcohol film hot water of the present invention cuts off temperature can be increased to 54 degree Celsius between 63 degree Celsius, to shorten in the subsequent preparation technology, further required man-hour and the minimizing energy consumption of high temperature drying thermal treatment.
[embodiment]
The present invention will be described further with following several embodiment.In the polyvinyl alcohol membrane composite of the following example, water-soluble polyhedral oligomeric silsesquioxane compound have chemical structural formula (I) or (II) shown in structure:
Wherein,
The water-soluble polyhedral oligomeric silsesquioxane compound of embodiment 1,2 is chemical structural formula (I), and R is (CH
2)
3OCH
2CH (OH) CH
2O (C
6H
4) SO
3H, X are isobutyl-(iso-butyl), available from HybridPlastics, and model Tris Sulfonic Acid Isobutyl POSS SA1533;
The water-soluble polyhedral oligomeric silsesquioxane compound of embodiment 3 is chemical structural formula (II), and R is O-N (CH
3)
4 +(CAS No.69667-29-4), available from Hybrid Plastics, model OctaTMA POSSMS0860; And
The water-soluble polyhedral oligomeric silsesquioxane compound of embodiment 4,5 is chemical structural formula (II), and R is CH
2CH
2CH
2NH
3Cl (CAS No.150380-11-3), available from Hybrid Plastics, model OctaAmmonium POSS AM0285.
Embodiment 1:
The polyvinyl alcohol membrane composite prescription is as follows:
(a) high-molecular polyvinyl alcohol of 10 weight parts, its polymerization degree are 3000, and basicity is 99 molar percentages;
(b) glycerol of 1 weight part (glycerine); And
(c) the water-soluble polyhedral oligomeric silsesquioxane compound c-1 of 0.005 weight part,
Above-mentioned prescription is added water mixing (solid content 11wt%) and about more than 2 hours in 90 ℃ of heated and stirred, make the high-molecular polyvinyl alcohol dissolving and the prescription aqueous solution even.The aqueous solution of will filling a prescription is coated on the glass plate, the drying at room temperature film forming.
Comparing embodiment 1:
The prescription of polyvinyl alcohol membrane composite and method such as embodiment 1 wherein do not have to add and are somebody's turn to do (c) water-soluble polyhedral oligomeric silsesquioxane compound.
Comparing embodiment 2:
The prescription of polyvinyl alcohol membrane composite and method such as embodiment 1 should (c) be interfacial agent lauric acid diethyl amide (lauric acid diethanolamide) wherein.
Embodiment 2:
The polyvinyl alcohol membrane composite prescription is as follows:
(a) high-molecular polyvinyl alcohol of 10 weight parts, its polymerization degree are 3000, and basicity is 99 molar percentages;
(b) glycerol of 1 weight part (glycerine); And
(c) the water-soluble polyhedral oligomeric silsesquioxane compound c-1 of 0.05 weight part,
Above-mentioned prescription is added water mixing (solid content 11wt%) and about more than 2 hours in 90 ℃ of heated and stirred, make the high-molecular polyvinyl alcohol dissolving and the prescription aqueous solution even.The aqueous solution of will filling a prescription is coated on the glass plate, the drying at room temperature film forming.
Comparing embodiment 3:
The prescription of polyvinyl alcohol membrane composite and method such as embodiment 2 should (c) be interfacial agent lauric acid diethyl amide (lauric acid diethanolamide) wherein.
Embodiment 3:
The polyvinyl alcohol membrane composite prescription is as follows:
(a) high-molecular polyvinyl alcohol of 10 weight parts, its polymerization degree are 2700, and basicity is 99.9 molar percentages;
(b) glycerol of 1 weight part (glycerine); And
(c) the water-soluble polyhedral oligomeric silsesquioxane compound c-2 of 0.02 weight part,
Above-mentioned prescription is added water mixing (solid content 11wt%) and about more than 2 hours in 90 ℃ of heated and stirred, make the high-molecular polyvinyl alcohol dissolving and the prescription aqueous solution even.The aqueous solution of will filling a prescription is coated on the glass plate, the drying at room temperature film forming.
Embodiment 4:
The polyvinyl alcohol membrane composite prescription is as follows:
(a) high-molecular polyvinyl alcohol of 10 weight parts, its polymerization degree are 2700, and basicity is 99.9 molar percentages;
(b) glycerol of 1 weight part (glycerine); And
(c) the water-soluble polyhedral oligomeric silsesquioxane compound c-3 of 0.02 weight part,
Above-mentioned prescription is added water mixing (solid content 11wt%) and about more than 2 hours in 90 ℃ of heated and stirred, make the high-molecular polyvinyl alcohol dissolving and the prescription aqueous solution even.The aqueous solution of will filling a prescription is coated on the glass plate, the drying at room temperature film forming.
Comparing embodiment 4:
The prescription of polyvinyl alcohol membrane composite and method such as embodiment 3 and 4 should (c) be interfacial agent lauric acid diethyl amide (lauric acid diethanolamide) wherein.
Embodiment 5:
The polyvinyl alcohol membrane composite prescription is as follows:
(a) high-molecular polyvinyl alcohol of 10 weight parts, its polymerization degree are 2700, and basicity is 99.9 molar percentages;
(b) glycerol of 1 weight part (glycerine); And
(c) the water-soluble polyhedral oligomeric silsesquioxane compound c-3 of 0.01 weight part,
Above-mentioned prescription is added water mixing (solid content 11wt%) and about more than 2 hours in 90 ℃ of heated and stirred, make the high-molecular polyvinyl alcohol dissolving and the prescription aqueous solution even.The aqueous solution of will filling a prescription is coated on the glass plate, the drying at room temperature film forming.
Comparing embodiment 5:
The prescription of polyvinyl alcohol membrane composite and method such as embodiment 5 wherein do not have to add and are somebody's turn to do (c) water-soluble polyhedral oligomeric silsesquioxane compound.
Hot water cuts off temperature test
Embodiment and comparing embodiment are carried out hot water cut-out temperature test and comparison, and method is as follows:
Cut 0.5 centimeter in the width of cloth direction of polyvinyl alcohol film, the test portion of 2 centimeters in curtain coating direction, with 2.65 g of this test portion loadings, hang be dipped in the 40 degree water Celsius after, water temperature heats up with per minute 3 degree Celsius, the hot water temperature that test portion cuts off is hot water and cuts off temperature.
Water contact angle
Use AST Products product VCA-2500XE contact angle analyser, record water contact angle.
Thickness
Use Mitutoyo thickness gauge (liquid crystal digital display 543-251, micrometer platform 7002) to measure.
Outward appearance
The transparency of visual observation polyvinyl alcohol film.
Water ratio
With polyvinyl alcohol film insert Celsius 105 the degree baking ovens in one hour, calculate water ratio by the front and back weight difference.
Test result is shown in table 1,2,3.As shown in Table 1, add the embodiment 1,2 of water-soluble polyhedral oligomeric silsesquioxane compound, its hot water cuts off temperature, all do not add the comparing embodiment 1 of water-soluble polyhedral oligomeric silsesquioxane compound, and the comparing embodiment 2,3 of only adding the interfacial agent lauric acid diethyl amide, and increase to some extent.The present invention adds the polyhedral oligomeric silsesquioxane compound as can be known, and the hot water that can effectively promote polyvinyl alcohol film cuts off temperature.
As shown in Table 2, add the embodiment 3,4 of water-soluble polyhedral oligomeric silsesquioxane compound, its hot water cuts off temperature, the comparing embodiment 4 of all more only adding the interfacial agent lauric acid diethyl amide, and increase to some extent.The present invention adds the polyhedral oligomeric silsesquioxane compound as can be known, and the hot water that can effectively promote polyvinyl alcohol film cuts off temperature.
As shown in Table 3, add the embodiment 5 of water-soluble polyhedral oligomeric silsesquioxane compound, its hot water cuts off temperature, the comparing embodiment 5 of not adding water-soluble polyhedral oligomeric silsesquioxane compound, and increase to some extent.The present invention adds the polyhedral oligomeric silsesquioxane compound as can be known, and the hot water that can effectively promote polyvinyl alcohol film cuts off temperature.
Table 1, polyvinyl alcohol film test result be (embodiment 1,2) relatively
Annotate: a-1: high-molecular polyvinyl alcohol, the polymerization degree are 3000, and basicity is 99 molar percentages.
B-1: glycerol (glycerine).
C-0: lauric acid diethyl amide (lauric acid diethanolamide).
C-1: chemical structural formula (I), R are (CH
2)
3OCH
2CH (OH) CH
2O (C
6H
4) SO
3H, X are isobutyl-(iso-butyl).
Table 2, polyvinyl alcohol film test result be (embodiment 3,4) relatively
Annotate: a-2: high-molecular polyvinyl alcohol, the polymerization degree are 2700, and basicity is 99.9 molar percentages.
B-1: glycerol (glycerine).
C-0: lauric acid diethyl amide (lauric acid diethanolamide).
C-2: chemical structural formula (II), R are O-N (CH
3)
4 +
C-3: chemical structural formula (II), R are CH
2CH
2CH
2NH
3Cl.
Table 3, polyvinyl alcohol film test result be (embodiment 5) relatively
Annotate: a-2: high-molecular polyvinyl alcohol, the polymerization degree are 2700, and basicity is 99.9 molar percentages.
B-1: glycerol (glycerine).
C-3: chemical structural formula (II), R are CH
2CH
2CH
2NH
3Cl.
Embodiment 6: Polarizer is made
Polyvinyl alcohol film made among the embodiment 4 is carried out light polarizing film preparation technology.Prior to flooding swelling in 25 ℃ of tanks.At the staining trough aqueous solution (I
20.4g/L, KI 20g/L) dipping dyed iodine 180 seconds.One extends to 5 times of former length in 25 ℃ of tanks.In pickup groove (boric acid 50g/L) and complementary color groove (KI 30g/L), continue one and extend to 5.5 times of former length.80 ℃ of dryings 3 minutes.Use the 6wt% polyvinyl alcohol water solution to be solid, fit in the light polarizing film both sides and go up three cellulose acetate membrane (LOFO 6306-1556, thick 80 μ m), 50 ℃ of dryings obtain Polarizer (thickness 185 μ m), and its degree of polarization is 99.86%, and penetration is 39%.
Though the present invention with several preferred embodiments openly as above; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can changing arbitrarily and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (10)
1. polyvinyl alcohol membrane composite comprises:
(a) polyvinyl alcohol of 100 weight parts;
(b) many alkylol cpds of 1～30 weight part; And
(c) the water-soluble polyhedral oligomeric silsesquioxane compound of 0.001～20 weight part, this water-soluble polyhedral oligomeric silsesquioxane compound has structure shown in chemical structural formula (I) or the chemical structural formula (II):
Wherein water-soluble functional group R is CH
2CH
2(OCH
2CH
2)
13.3OCH
3, O
-N (CH
3)
4 +, CH
2CH
2CH
2NH
3Cl or (CH
2)
3OCH
2CH (OH) CH
2O (C
6H
4) SO
3H; And X is alkyl, cycloalkyl, phenyl or many cyclic groups.
2. polyvinyl alcohol membrane composite according to claim 1, the polymerization degree of wherein being somebody's turn to do (a) polyvinyl alcohol is 500～10000, basicity is greater than 75 molar percentages.
3. polyvinyl alcohol membrane composite according to claim 1 should (b) many alkylol cpds be glycerol, polyoxyethylene glycol, trivinyl glycol, divinyl glycol, trimethylammonium alcohol propane wherein, or aforesaid combination.
4. polyvinyl alcohol membrane composite according to claim 1, wherein X is an isobutyl-.
5. polyvinyl alcohol membrane composite according to claim 1, the weight part that wherein is somebody's turn to do (b) many alkylol cpds is 1～20; And the weight part that is somebody's turn to do (c) water-soluble polyhedral oligomeric silsesquioxane compound is 0.001～5.
6. polyvinyl alcohol membrane composite according to claim 1, the weight part that wherein is somebody's turn to do (b) many alkylol cpds is 5～18; And the weight part that is somebody's turn to do (c) water-soluble polyhedral oligomeric silsesquioxane compound is 0.05～1.
7. polyvinyl alcohol membrane composite according to claim 1 more comprises an additive.
8. polyvinyl alcohol membrane composite according to claim 7, wherein this additive comprise interfacial agent, dye pigment, plasticizer, bridging agent or adherence imparting agent, or aforesaid combination.
9. Polarizer comprises:
One light polarizing film comprises the described polyvinyl alcohol membrane composite of claim 1; And
One light polarizing film protective membrane is arranged at least one surface of this light polarizing film.
10. Polarizer according to claim 9, wherein this light polarizing film protective membrane is a three cellulose acetate membrane.
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|---|---|---|---|
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| CN102019738B (en) * | 2010-10-11 | 2013-04-17 | 厦门大学 | POSS (polyhedral oligomeric silsesquioxanes) modified high barrier three-layer co-extrusion packaging film and preparation method thereof |
| US20130045390A1 (en) | 2011-08-16 | 2013-02-21 | Rui Xu | Base Film of Modified Polyvinyl Alcohol and Its Preparation Method and Polarizer |
| CN102432899A (en) * | 2011-08-16 | 2012-05-02 | 深圳市华星光电技术有限公司 | Modified polyvinylalcohol (PVA) base film, preparation method thereof and polarizer |
| KR102004493B1 (en) * | 2012-03-27 | 2019-07-26 | 주식회사 동진쎄미켐 | Ladder-like silsesquioxane polymer and resin composition for optical film comprising the same |
| KR102126686B1 (en) | 2016-11-04 | 2020-06-25 | 주식회사 엘지화학 | Coating composition |
| CN110563967A (en) * | 2019-09-18 | 2019-12-13 | 红云红河烟草(集团)有限责任公司 | Polyvinyl alcohol (PVA 17-88) hydrosol for cigarettes and preparation method thereof |
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