WO2016108631A1 - 폴리아마이드-이미드 전구체, 폴리아마이드-이미드 필름 및 이를 포함하는 표시소자 - Google Patents
폴리아마이드-이미드 전구체, 폴리아마이드-이미드 필름 및 이를 포함하는 표시소자 Download PDFInfo
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- 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/14—Polyamide-imides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- the present invention relates to a polyamide-imide precursor, a polyamide-imide film imidized thereto, and a display device including the polyamide-imide film.
- a polyimide (PI) film is a film of a polyimide resin
- a polyimide resin is a solution polymerization of an aromatic dianhydride and an aromatic diamine or an aromatic diisocyanate to prepare a polyamic acid derivative, followed by ring closure dehydration at a high temperature.
- the high heat resistant resin manufactured by imidation is called. Since such polyimide films have excellent mechanical, heat resistance, and electrical insulation properties, they are used in a wide range of fields in electronic materials such as insulating films of semiconductors and electrode protective films of flexible printed wiring circuits of TFT-LCDs.
- polyimide resins are usually colored brown and yellow due to their high aromatic ring density, which results in low transmittance in the visible range and yellowish color. As a result, the light transmittance is lowered, and a large birefringence is exhibited, which makes it difficult to use the optical member.
- US Patent No. 5053480 uses a method of using an aliphatic ring-based dianhydride component instead of an aromatic dianhydride, thereby improving transparency and color in solution or film formation.
- this was only an improved effect compared to the purification method, ultimately there is a limit to improve the permeability, high permeability was not achieved, but rather resulted in thermal and mechanical degradation.
- the present invention is to provide a polyamide-imide precursor for forming a film having a low birefringence and colorless transparency and excellent mechanical properties and heat resistance.
- the present invention provides a polyamide-imide film prepared by imidating the polyamide-imide precursor and an image display device including the same.
- a first preferred embodiment of the present invention for solving the above problems is a first block copolymerized monomers comprising dianhydride and diamine; And a polyamide-imide precursor comprising in the molecular structure a second block copolymerized with monomers comprising an aromatic dicarbonyl compound and an aromatic diamine.
- the dianhydride comprises biphenyltetracarboxylic dianhydride (BPDA) and 2-bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA), wherein the diamine is Bis trifluoromethylbenzidine (TFDB).
- a second preferred embodiment of the present invention is a polyamide-imide having a structure in which the polyamide-imide precursor of the first embodiment is imidized, and the third embodiment is a polyamide-imide of the first embodiment.
- a fourth preferred embodiment of the present invention is an image display device comprising the polyamide-imide film of the third embodiment.
- the polyamide-imide precursor of the present invention When the polyamide-imide precursor of the present invention is imidized, it is possible to form a film or a film having low birefringence and colorless transparency and excellent mechanical properties and heat resistance.
- the polyamide-imide film prepared according to the present invention can be usefully used in various fields such as semiconductor insulating film, TFT-LCD insulating film, passivation film, liquid crystal alignment film, optical communication material, solar cell protective film, flexible display substrate, etc. have.
- 1 is a dimension change graph of one example of a polyimide film (based on film thickness of 12 ⁇ m) of the present invention repeatedly measured 1 to 3 times in a section of 50 to 250 ° C. by TMA-Method.
- the present invention comprises a first block copolymerized with monomers comprising dianhydride and diamine; And it provides a polyamide-imide precursor comprising a second block copolymerized with monomers comprising an aromatic dicarbonyl compound and an aromatic diamine in the molecular structure.
- the dianhydride comprises biphenyltetracarboxylic dianhydride (BPDA) and 2-bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA), wherein the diamine is Bis trifluoromethylbenzidine (TFDB).
- the present invention relates to dianhydrides and bistriles including biphenyltetracarboxylic acid dianhydride (BPDA) and 2-bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA).
- BPDA biphenyltetracarboxylic acid dianhydride
- 6FDA 2-bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride
- TFDB fluoromethylbenzidine
- TFDB fluoromethylbenzidine
- polyamide-imide precursor comprising a second block copolymerized with an aromatic dicarbonyl compound and an aromatic diamine in the molecular structure.
- the first block including an imide bond may be excellent in optical as well as thermal and mechanical properties.
- a second block containing an amide bond and polymerized so as to exist simultaneously in the molecular structure that is, in the case of usually made of only an imide structure, by securing the possible mechanical properties through the second block including the amide bond, it is possible to finally improve the thermal stability, mechanical properties, low birefringence and optical properties in a balanced manner.
- TFDB bistrifluoromethyl benzidine
- 2-bis (3,4-dicarboxy) as dianhydride.
- phenyl) hexafluoropropane dianhydride (6FDA) and biphenyl tetracarboxylic dianhydride (BPDA) birefringence improvement and heat resistance can be ensured.
- the first block since the dianhydride forming the first block includes two kinds of dianides, that is, 6FDA and BPDA simultaneously, the first block includes a polymer combined with TFDB and 6FDA, and a polymer combined with TFDB and BPDA.
- a polymer combined with TFDB and 6FDA and a polymer combined with TFDB and BPDA.
- Each may be included separately based on separate repeating units, may be regularly arranged within the same repeating unit, or may be included in a completely random arrangement.
- BPDA and 6FDA are included in a molar ratio of 1: 3 to 3: 1 as the dianhydride, as well as ensuring optical properties, and preventing mechanical properties and heat resistance from deteriorating. It is advantageous to have birefringence.
- the ratio of BPDA is less than 1/3 compared to 6FDA, that is, when 6FDA is added more than three times of BPDA, heat resistance and mechanical properties cannot be secured. If less than 1/3 of the mechanical properties can be improved, but the birefringence value increases with the undesirable.
- the molar ratio of the first block and the second block is 5: 1 to 1: 1. If the content of the second block is significantly low, the thermal stability and the improvement of the mechanical properties are insignificant, so that distortion and tearing may occur in the display manufacturing process. On the other hand, when the content is higher than the content of the first block, thermal stability and mechanical properties may be improved, but optical properties such as yellowness or transmittance may be reduced, and birefringence may be high, which may be inappropriate to be applied as an optical device. .
- the first block and the second block may form a random copolymer or may form a block copolymer, the repeating unit of the block is not particularly limited in the present invention.
- the aromatic dicarbonyl compound forming the second block includes terephthaloyl chloride (pPC), terephthalic acid (Terephthalic acid), isophthaloyl dichloride (Iso-phthaloyl dichloirde) and It may be one or more selected from the group consisting of 4,4'-benzoyl dichloride (4,4'-benzoyl chloride), more preferably terephthaloyl chloride (pPC) and isophthaloyl di
- pPC 4,4'-benzoyl dichloride
- pPC terephthaloyl chloride
- Iso-phthaloyl dichloirde isophthaloyl di
- chloride Iso-phthaloyl dichloirde
- diamine forming the second block 2,2-bis (4- (4-aminophenoxy) phenyl) hexafluoropropane (HFBAPP) and bis (4- (4-aminophenoxy) phenyl) Sulfone (BAPS), bis (4- (3-minophenoxy) phenyl) sulfone (BAPSM), 4,4'-diaminodiphenylsulfone (4DDS), 3,3'-diaminodiphenylsulfone (3DDS) , 2,2-bis (4- (4-aminophenoxy) phenyl propane (BAPP), 4,4'-diaminodiphenylpropane (6HDA), 1,3-bis (4-aminophenoxy) benzene ( 134APB), 1,3-bis (3-aminophenoxy) benzene (133APB), 1,4-bis (4-aminophenoxy) biphenyl (BAPB), 4,4'-bis (4-amino-2 -
- the aromatic dicarbonyl compound When the aromatic dicarbonyl compound is used, it may be easy to implement high thermal stability and mechanical properties, but birefringence may be high due to benzene ring in the molecular structure. Accordingly, in order to prevent the birefringence decrease caused by the second block in the present invention, it is preferable to use a diamine in which a soft group is introduced into the molecular structure, bis (4- (3-aminophenoxy) phenyl) sulfone (BAPSM), More preferably, it is at least one diamine selected from 4,4'-diaminodiphenylsulfone (4DDS) and 2,2-bis (4- (4-aminophenoxy) phenyl) hexafluoropropane (HFBAPP).
- BAPSM bis (4- (3-aminophenoxy) phenyl) sulfone
- 4DDS 4,4'-diaminodiphenylsulfone
- HFBAPP 2,2-bis
- the monomer is polymerized to include a dianhydride including biphenyltetracarboxylic acid dianhydride (BPDA) and 2-bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA); A first block copolymerized with a diamine comprising bis trifluoromethylbenzidine (TFDB); And a polyamide-imide precursor including a second block copolymerized with an aromatic dicarbonyl compound and an aromatic diamine in its molecular structure, having a weight average molecular weight of 200,000 to 215,000 measured by gel permeation chromatography (GPC), and a viscosity of 2400. It is preferable that it is poise to 2600 poise.
- BPDA biphenyltetracarboxylic acid dianhydride
- 6FDA 2-bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride
- TFDB bis trifluoromethylbenzidine
- the present invention may provide a polyamide-imide film prepared by polyamide-imide to imidize the polyamide-imide precursor having a structure in which the polyamide-imide precursor is dehydrated, that is, imidized.
- the following imidization step may be performed in order to prepare a polyamide-imide resin or a polyamide-imide film using the polyamide-imide precursor.
- ⁇ aromatic dianhydride> and ⁇ aromatic dicarbonyl compound and diamine> satisfying the above-described conditions of the present invention are copolymerized in an equivalent ratio of 1: 1 to prepare a polyamide-imide precursor solution.
- the polymerization conditions are not particularly limited, but may be preferably performed in an inert atmosphere such as nitrogen or argon at -10 to 80 °C for 2 to 48 hours.
- a solvent may be used for the solution polymerization of the monomers, and the solvent is not particularly limited as long as it is a known reaction solvent.
- m-cresol and N-methyl-2-pyrrolidone (NMP) are used.
- One or more polar solvents selected from dimethylformamide (DMF), dimethylacetamide (DMAc), dimethyl sulfoxide (DMSO), acetone, diethyl acetate and the like can be used.
- a low boiling point solution such as tetrahydrofuran (THF), chloroform or the like or a low absorbing solvent such as ⁇ -butyrolactone may be used.
- the content of the solvent is not particularly limited, but in order to obtain the molecular weight and viscosity of the appropriate polyamide-imide precursor solution, the content of the solvent is preferably 50 to 95% by weight of the total polyamide-imide precursor solution. And it may be more preferable that it is 70 to 90% by weight.
- the obtained polyamide-imide precursor solution can then be appropriately selected and imidized by a known imidization method, and examples thereof include thermal imidization, chemical imidization, thermal imidization and chemical imidization. It can be applied in combination.
- a polyamide-imide precursor solution is reacted by adding an imidization catalyst represented by a dehydrating agent represented by an acid anhydride such as acetic anhydride and tertiary amines such as isoquinoline, ⁇ -picolin, and pyridine.
- the thermal imidization method is a method in which the polyamide-imide precursor solution is gradually heated in a temperature range of 40 to 300 ° C. and heated and reacted for 1 to 8 hours.
- the composite imidation method which used together the thermal imidation method and the chemical imidation method is applicable as an example of manufacturing a polyamide-imide film.
- a dehydrating agent and an imidization catalyst are added to a polyamide-amide precursor solution, and cast on a support, followed by heating at 80 to 200 ° C, preferably 100 to 180 ° C, to dehydrate and imidize.
- the catalyst may be activated, partially cured and dried, followed by a series of processes heating at 200 to 400 ° C. for 5 to 400 seconds.
- the imidized solution is added to a second solvent, precipitated, filtered and dried to obtain a solid content of the polyamide-imide resin. It is also possible to produce a polyamide-imide film by dissolving the obtained polyamide-imide resin solid content in a 1st solvent and forming into a film.
- the polyamide-imide resin solid content is filtered and dried under conditions of boiling point of the second solvent, the temperature is preferably 50 to 120 ° C, and the time is 3 to 24 hours, and the film forming process is cast to 40 to 400 It may be performed by heating for 1 minute to 8 hours while gradually increasing the temperature in the temperature range of °C.
- the same solvent as the solvent used in the polymerization of the polyamide-imide precursor solution may be used as the first solvent, and the second solvent may be more polar than the first solvent in order to obtain a solid content of the polyamide-imide resin.
- these low solvents namely, water, alcohols, ethers and ketones can be used.
- the content of the second solvent is not particularly limited, but is preferably 5 to 20 times by weight based on the weight of the polyamide-imide precursor solution.
- the obtained polyamide-imide film can be heat treated once more to solve the thermal history and residual stress remaining in the film.
- the temperature of the additional heat treatment process is preferably 300 to 500 °C
- the heat treatment time is preferably 1 minute to 3 hours
- the residual volatile content of the film after the heat treatment may be 5% or less, preferably 3% or less.
- the thermally treated film finally exhibits very stable thermal characteristics.
- the thickness of the said polyamide-imide film in this invention is not specifically limited, It is preferable that it is the range of 5-100 micrometers, More preferably, it is 9-15 micrometers.
- the polyamide-imide film according to the present invention has a birefringence (n) defined as Transeverse Elictric (TE) -Transverse magnetic (TE) based on a film thickness of 10 to 50 ⁇ m of 0.017 or less, and a transmittance measured at 550 nm. It is 88% or more and exhibits optical characteristics with a yellowness of 6.5 or less, so that it can be usefully used as an optical element such as a substrate or a protective layer of a display.
- TE Transeverse Elictric
- TE Transverse magnetic
- the polyamide-imide film according to the present invention has a linear coefficient of thermal expansion (CTE) measured twice at 50 to 250 ° C. by TMA-Method based on a film thickness of 10 to 50 ⁇ m. It may be less than 70ppm / °C, when measured repeatedly 1 to 3 times in the 50 to 250 °C section by thermal deformation analysis (TMA-Method) based on 10 to 50 ⁇ m, the minimum value in the first temperature rise curve (at 50 °C
- TMA-Method thermal deformation analysis
- the display may exhibit excellent yield because it does not easily bend or deform even under severe process conditions or sudden temperature changes.
- the present invention can provide an image display device having excellent optical and physical properties and high manufacturing yield by including the aforementioned polyimide film.
- TFDB Bis trifluoromethylbenzidine
- NMP N-methyl-2-pyrrolidone
- BPDA biphenyltetracarboxylic acid dianhydride
- the obtained solution was applied to a stainless plate, cast at 60 ⁇ m, dried with hot air at 80 ° C. for 30 minutes, at 150 ° C. for 30 minutes, at 280 ° C. for 30 minutes, and then gradually cooled to remove the plate from the plate. Separated to prepare a polyamide-imide film having a thickness of 12 ⁇ m.
- NMP N-methyl-2-pyrrolidone
- NMP N-methyl-2-pyrrolidone
- TFDB 30.742 g (0.096 mol) was charged after filling 292.981 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injection device, a dropping funnel, a temperature controller and a cooler as a reactor. Dissolved. BPDA 14.123 g (0.048 mol) was reacted for 1 hour. Thereafter, 6FDA 19.725 g (0.0444 mol) was added thereto and reacted for 2 hours. Then, 12.443 g (0.024 mol) of HFBAPP was added thereto and dissolved for 1 hour.
- NMP N-methyl-2-pyrrolidone
- NMP N-methyl-2-pyrrolidone
- the reactor was filled with 298.958 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injector, a dropping funnel, a temperature controller and a cooler, followed by 19.214 g (0.06 mol) of TFDB. Dissolved. BPDA 8.827 g (0.03 mol) was reacted for 1 hour. Thereafter, 6FDA 12.261 g (0.0276 mol) was added thereto and reacted for 2 hours. Then, 31.108 g (0.06 mol) of HFBAPP was added and dissolved for 1 hour.
- NMP N-methyl-2-pyrrolidone
- TFDB 30.742 g (0.096 mol) was charged after filling 285.666 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injection device, a dropping funnel, a temperature controller and a cooler as a reactor. Dissolved. BPDA 14.123 g (0.048 mol) was reacted for 1 hour. Thereafter, 19.725 g (0.0444 mol) of 6FDA was added thereto and reacted for 2 hours. Then, 10.38 g (0.024 mol) of bis (4- (3-aminophenoxy) phenyl) sulfone (BAPSM) was added thereto and dissolved for 1 hour.
- NMP N-methyl-2-pyrrolidone
- NMP N-methyl-2-pyrrolidone
- the reactor was filled with 327.071 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injector, a dropping funnel, a temperature controller and a cooler, and then HFBAPP 41.477 g (0.08 mol) was charged. After dissolving, the temperature of the solution was maintained at 15 ° C. or lower, 18.65 g (0.32 mol) of propylene oxide was added thereto, and then 16.242 g (0.08 mol) of TPC was added thereto. The reaction was carried out for 18 hours to give a solid content of 15 wt% and a viscosity of 1640 poise. Phosphorus polyamide-imide precursor solution was obtained.
- NMP N-methyl-2-pyrrolidone
- the reactor was filled with 327.071 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injector, a dropping funnel, a temperature controller and a cooler, and then HFBAPP 41.477 g (0.08 mol) was charged. After dissolving, the solution was kept at a temperature of 15 ° C. or lower, 18.65 g (0.32 mol) of propylene oxide was added thereto, and then 16.242 g (0.08 mol) of IPC was added thereto. The reaction was carried out for 18 hours to give a solid content of 15 wt% and a viscosity of 1140 poise. Phosphorus polyamide-imide precursor solution was obtained.
- NMP N-methyl-2-pyrrolidone
- BAPSM 34.599 g (0.08 mol) was charged after filling 288.098 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injection device, a dropping funnel, a temperature controller and a cooler as a reactor. After dissolving, the temperature of the solution was maintained at 15 ° C. or lower, 18.65 g (0.32 mol) of propylene oxide was added thereto, and then 16.242 g (0.08 mol) of TPC was added thereto. The reaction was carried out for 18 hours to give a solid content of 15 wt% and a viscosity of 210 poise. Phosphorus polyamide-imide precursor solution was obtained.
- NMP N-methyl-2-pyrrolidone
- the reactor was filled with 324.958 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injector, a dropping funnel, a temperature controller, and a cooler, followed by 19.865 g (0.08 mol) of 4DDS. After dissolution, the temperature of the solution was maintained at 15 ° C. or lower, 18.65 g (0.32 mol) of propylene oxide was added thereto, and then 16.242 g (0.08 mol) of TPC was added for reaction for 18 hours. The solid content was 10 wt% and the viscosity was 24 poise. Phosphorus polyamide-imide precursor solution was obtained.
- NMP N-methyl-2-pyrrolidone
- the reactor was filled with 312.94 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injector, a dropping funnel, a temperature controller and a cooler, followed by 38.428 g (0.12 mol) of TFDB.
- NMP N-methyl-2-pyrrolidone
- 26.48 g (0.09 mol) of BPDA was added thereto and reacted for 2 hours, followed by reacting for 6 hours with 13.328 g (0.03 mol) of 6FDA, followed by 18 hours of polyamide-imide having a solid content of 20 wt% and a viscosity of 450 poise De precursor solution was obtained.
- NMP N-methyl-2-pyrrolidone
- TFDB 38.428 g (0.12 mol) was charged with 348.947 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injection device, a dropping funnel, a temperature controller and a cooler as a reactor.
- NMP N-methyl-2-pyrrolidone
- 6FDA 39.983 g (0.09 mol) was added thereto and reacted for 18 hours to give a solid content of 20 wt% and a viscosity of 245 poise.
- De precursor solution was obtained.
- NMP N-methyl-2-pyrrolidone
- NMP N-methyl-2-pyrrolidone
- NMP N-methyl-2-pyrrolidone
- the reactor was filled with 261.6 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injector, a dropping funnel, a temperature controller, and a cooler, followed by 26.899 g (0.084 mol) of TFDB. 4DDS 8.94 (0.036 mol) was dissolved. Put 12.357g (0.042mol) of BPDA and 17.539g (0.0394mol) of 6FDA, and after dissolution, keep the temperature of solution below 15 °C, add 8.392g (0.144mol) of propylene oxide, and then add 7.309g (0.036mol) of TPC.
- NMP N-methyl-2-pyrrolidone
- the reactor was filled with N-methyl-2-pyrrolidone (NMP) 272.12 while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injector, a dropping funnel, a temperature controller and a cooler and dissolved with 38.428 g (0.12 mol) of TFDB. after. Put 12.357g (0.042mol) of BPDA and 17.539g (0.042mol) of 6FDA, and after dissolution, keep the temperature of solution below 15 °C, add 8.392g (0.144mol) of propylene oxide, and then add 7.309g (0.036mol) of TPC.
- NMP N-methyl-2-pyrrolidone
- the reactor was filled with 270.874 g of N-methyl-2-pyrrolidone (NMP) while passing nitrogen through a 500 ml reactor equipped with a stirrer, a nitrogen injector, a dropping funnel, a temperature controller, and a cooler, followed by 11.528 g (0.036 mol) of TFDB. Dissolved. After reacting BPDA 3.531g (0.012mol) for 2 hours, 6FDA 10.129g (0.0228mol) was added and reacted for 2 hours, after which HFBAPP 43.551g (0.084mol) was added and dissolved for 1 hour.
- NMP N-methyl-2-pyrrolidone
- Viscosity The Brookfield viscometer (RVDV-II + P) was measured twice at 50 rpm using 6 or 7 scandals at 25 ° C to determine the average value.
- Yellowness (Y.I.) measurement The yellowness was measured by ASTM E313 standard using a UV spectrometer (Konita Minolta, CM-3700d).
- birefringence measurement using a birefringence analyzer (Prism Coupler, Sairon SPA4000) measured the average value by measuring three times in each of the TE (Transeverse Elictric) and TM (Transverse magnetic) mode at 532nm, (TE mode)-( TM mode) is reflected in the birefringence value.
- TE Transeverse Elictric
- TM Transverse magnetic
- CTE coefficient of thermal expansion
- Elongation at break (%) measurement Measurement was made according to the standard of ASTM-D882 using Instron 5967. Specimen size was measured at 15mm ⁇ 100mm, Load cell 1KN, and tension rate at 10mm / min.
- Example 1 (TFDB + BPDA + 6FDA) + (HFBAPP + TPC) (80:60:20) + (20:20) 2510 88.42 6.2
- Example 2 (TFDB + BPDA + 6FDA) + (HFBAPP + TPC) (80:40:40) + (20:20) 2010 89.12 4.5
- Example 3 (TFDB + BPDA + 6FDA) + (HFBAPP + TPC) (80:20:60) + (20:20) 1860 89.72 4.1
- Example 4 (TFDB + BPDA + 6FDA) + (HFBAPP + IPC) (80:40:40) + (20:20) 1460 89.24 4.8
- Example 5 (TFDB + BPDA + 6FDA) + (HFBAPP + TPC) (70:35:35) + (30:30) 1560 88.2 5.3
- Example 6 (TFDB + BPDA + 6FDA) + (HFBAPP + TPC) (70:35:35)
- Examples 1 to 8 have a high transmittance, yellowness (YI) and low birefringence on the average compared to Comparative Examples 1 to 4 have a colorless transparent and excellent birefringence characteristics It turned out that it is suitable as a film. In addition, it was found that the thermal expansion coefficient was low and the heat resistance was excellent.
- Comparative Examples 5 to 7 show excellent properties in terms of permeability and yellowness, but it can be seen that they exhibit large values in mechanical properties (% elongation at break) and Dimension Change.
- Examples 1 to 8 have the same level of permeability as Comparative Examples 5 to 7, but the birefringence is better, the dimensional change is smaller, the elongation at break is excellent, and the mechanical properties are superior to those of the general polyimide film.
- BAPSM diamine
- Example 7 it can be seen that the birefringence and the CTE value is improved more.
- Comparative Example 12 when the first block was formed without using an aromatic diamine having a flexible group and the second block was formed using the remaining diamine, it was found that birefringence control and elongation improvement were difficult.
- the second block has a higher molar ratio than the first block, as in Comparative Example 13, the elongation at break is much improved, but as in Comparative Examples 1 to 4, there is a limit to the improvement of optical properties such as yellowness and improvement of heat resistance. It was confirmed that there is.
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Abstract
Description
구분 | 성분(제1블록)+(제2블록) | 몰비 | 점도(poise) | 550nm투과도(%) | Y.I. |
실시예1 | (TFDB+BPDA+6FDA)+ (HFBAPP+TPC) | (80:60:20)+ (20:20) | 2510 | 88.42 | 6.2 |
실시예2 | (TFDB+BPDA+6FDA)+ (HFBAPP+TPC) | (80:40:40)+ (20:20) | 2010 | 89.12 | 4.5 |
실시예3 | (TFDB+BPDA+6FDA)+ (HFBAPP+TPC) | (80:20:60)+ (20:20) | 1860 | 89.72 | 4.1 |
실시예4 | (TFDB+BPDA+6FDA)+ (HFBAPP+IPC) | (80:40:40)+ (20:20) | 1460 | 89.24 | 4.8 |
실시예5 | (TFDB+BPDA+6FDA)+ (HFBAPP+TPC) | (70:35:35)+ (30:30) | 1560 | 88.2 | 5.3 |
실시예6 | (TFDB+BPDA+6FDA)+ (HFBAPP+TPC) | (50:25:25)+ (50:50) | 1364 | 88 | 5.46 |
실시예7 | (TFDB+BPDA+6FDA)+ (BAPSM+TPC) | (80:40:40)+ (20:20) | 3010 | 89.16 | 3.8 |
실시예8 | (TFDB+BPDA+6FDA)+ (4DDS+TPC) | (80:40:40)+ (20:20) | 518 | 88.96 | 4.68 |
비교예1 | HFBAPP+TPC | 100:100 | 1640 | 83.24 | 11.2 |
비교예2 | HFBAPP+IPC | 100:100 | 1140 | 82.64 | 12.64 |
비교예3 | BAPSM+TPC | 100:100 | 210 | 85.43 | 6.51 |
비교예4 | 4DDS+TPC | 100:100 | 24 | 87.25 | 2.11 |
비교예5 | TFDB+BPDA+6FDA | 100:75:25 | 450 | 90.1 | 2.71 |
비교예6 | TFDB+BPDA+6FDA | 100:50:50 | 342 | 90.34 | 2.1 |
비교예7 | TFDB+BPDA+6FDA | 100:25:75 | 245 | 90.46 | 1.89 |
비교예8 | (TFDB+6FDA) + (HFBAPP+TPC) | (70:70)+ (30:30) | 1840 | 89.85 | 3.46 |
비교예9 | (TFDB+BPDA) + (HFBAPP+TPC) | (70:70)+ (30:30) | 1140 | 88.1 | 8.41 |
비교예10 | (4DDS+BPDA+6FDA)+ (HFBAPP+TPC) | (70:35:35)+ (30:30) | 214 | 88.01 | 5.6 |
비교예11 | TFDB+4DDS:BPDA+6FDA:TPC | 70+30:35+35:30 | 524 | 87.64 | 5.1 |
비교예12 | TFDB:BPDA+6FDA:TPC | 100:35+35:30 | 1420 | 89.4 | 2.8 |
비교예13 | (TFDB+BPDA+6FDA)+ (HFBAPP+TPC) | (30:10:20)+ (70:70) | 272 | 86.4 | 8.4 |
구분 | Prism Coupler | 선선형열팽창계수(ppm/℃) | Dimension Change (㎛) | 파단신율(%) | ||
TE모드 | TM모드 | 복굴절 | ||||
실시예1 | 1.6429 | 1.6259 | 0.0170 | 52 | 100 | 8 |
실시예2 | 1.6115 | 1.5972 | 0.0143 | 56 | 65 | 7.6 |
실시예3 | 1.6095 | 1.6005 | 0.0090 | 62 | 42 | 7.1 |
실시예4 | 1.6083 | 1.6015 | 0.0068 | 60 | 32 | 7.5 |
실시예5 | 1.6233 | 1.6153 | 0.0080 | 67 | 45 | 8.6 |
실시예6 | 1.6249 | 1.6152 | 0.0097 | 62 | 36 | 9.4 |
실시예7 | 1.6236 | 1.6169 | 0.0067 | 54 | 58 | 7.2 |
실시예8 | 1.635 | 1.6223 | 0.0127 | 58 | 76 | 7.8 |
비교예1 | 1.634 | 1.614 | 0.02 | 75 | 35 | 22 |
비교예2 | 1.629 | 1.616 | 0.013 | 82 | 24 | 24 |
비교예3 | 1.6928 | 1.6922 | 0.0006 | 78 | 40 | 9 |
비교예4 | 1.7273 | 1.6979 | 0.0294 | 42 | 21 | 8 |
비교예5 | 1.6106 | 1.597 | 0.0136 | 54 | 185 | 5.5 |
비교예6 | 1.5978 | 1.5865 | 0.0113 | 62 | 120 | 5 |
비교예7 | 1.5758 | 1.5654 | 0.0104 | 68 | 104 | 4.8 |
비교예8 | 1.6197 | 1.6158 | 0.0039 | 72 | 46 | 5.6 |
비교예9 | 1.6459 | 1.6255 | 0.0204 | 47 | 115 | 9.1 |
비교예10 | 1.6601 | 1.6525 | 0.0076 | 69 | 50 | 6.7 |
비교예11 | 1.635 | 1.6223 | 0.0127 | 60 | 42 | 8.2 |
비교예12 | 1.6177 | 1.5996 | 0.0181 | 54 | 64 | 5.4 |
비교예13 | 1.624 | 1.611 | 0.013 | 66 | 41 | 14 |
Claims (13)
- 디안하이드라이드와 디아민을 포함하는 단량체들이 공중합된 제 1 블록; 및 방향족 디카르보닐 화합물과 방향족 디아민을 포함하는 단량체들이 공중합된 제 2 블록을 분자구조 내에 포함하며,상기 디안하이드라이드는 비페닐테트라카르복실산 디안하이드라이드(BPDA) 및 2-비스(3,4-디카르복시페닐)헥사플루오로프로판 디안하이드라이드(6FDA)을 포함하는 것이고, 상기 디아민은 비스 트리플루오로메틸벤지딘(TFDB)를 포함는 것임을 특징으로 하는 폴리아마이드-이미드 전구체.
- 제 1 항에 있어서, 상기 제 2 블록을 형성하는 방향족 디카르보닐 화합물은 테레프탈로일 클로라이드(p-Terephthaloyl chloride, TPC), 이소프탈로일 디클로라이드(Iso-phthaloyl dichloirde) 및 4,4'-벤조일 디클로라이드(4,4'-benzoyl chloride)로 구성된 군에서 선택된 1 종 이상인 것을 특징으로 하는 폴리아마이드-이미드 전구체.
- 제 1 항에 있어서, 상기 제 2 블록을 형성하는 방향족 디아민은 2,2-비스(4-(4-아미노페녹시)페닐)헥사플루오로프로판(HFBAPP), 비스(4-(4-아미노페녹시)페닐)술폰(BAPS), 비스(4-(3-미노페녹시)페닐)술폰(BAPSM), 4,4'-디아미노디페닐술폰(4DDS), 3,3'-디아미노디페닐술폰(3DDS), 2,2-비스(4-(4-아미노페녹시)페닐 프로판(BAPP), 4,4'-디아미노디페닐프로판(6HDA), 1,3-비스(4-아미노페녹시)벤젠(134APB), 1,3-비스(3-아미노페녹시)벤젠(133APB), 1,4-비스(4-아미노페녹시)비페닐(BAPB), 4,4'-비스(4-아미노-2-트리플루오로 메틸페녹시)비페닐(6FAPBP), 3,3-디아미노-4,4,-디하이드록시디페닐술폰(DABS), 2,2,-비스(3-아미노-4-하이드록시페널)프로판(BAP), 4,4'-디아미노디페닐메탄(DDM), 4,4'-옥시디아닐린(4-ODA), 3,3'-옥시디아닐린(3-ODA)로 구성된 군에서 선택된 1종 이상인 것임을 특징으로 하는 폴리아마이드-이미드 전구체.
- 제 1 항에 있어서, 상기 제 1 블록과 제 2 블록은 몰비가 5:1 내지 1:1인 것을 특징으로 하는 폴리아마이드-이미드 전구체.
- 제 1 항에 있어서, 상기 비페닐테트라카르복실산 디안하이드라이드(BPDA)와 2-비스(3,4-디카르복시페닐)헥사플루오로프로판 디안하이드라이드(6FDA)는 제 1 블록을 형성하는 디안하이드라이드 내에 1:3 내지 3:1의 몰비로 포함되는 것임을 특징으로 하는 폴리아마이드-이미드 전구체.
- 제 1 항 내지 제 5 항 중 어느 한 항의 폴리아마이드-이미드 전구체를 이미드화시킨 구조를 갖는 폴리아마이드-이미드 수지.
- 제 1 항 내지 제 5 항 중 어느 한 항의 폴리아마이드-이미드 전구체를 이미드화하여 제조된 폴리아마이드-이미드 필름.
- 제 7 항에 있어서, 상기 폴리아마이드-이미드 필름은 TE(Transeverse Elictric)-TM(Transverse magnetic)으로 정의되는 복굴절(n)이 0.017 이하인 것을 특징으로 하는 폴리아마이드-이미드 필름.
- 제 7 항에 있어서, 상기 폴리아마이드-이미드 필름은 필름 두께 10 내지 50㎛를 기준으로 열변형해석법(TMA-Method)에 의해 50 내지 250℃에서 2회 반복하여 측정한 선형 열팽창 계수(CTE)가 70ppm/℃ 이하인 것을 특징으로 하는 폴리아마이드-이미드 필름.
- 제 7 항에 있어서, 상기 폴리아마이드-이미드 필름은 필름 두께 10 내지 50㎛를 기준으로 550nm에서 측정한 투과도가 88% 이상이며, 황색도가 6.5이하인 것을 특징으로 하는 폴리아마이드-이미드 필름.
- 제 7 항에 있어서, 상기 폴리이미드 필름은 ASTM D882(필름 두께 10 내지 50㎛)를 기준으로 측정한 파단신율이 7% 이상인 것을 특징으로 하는 폴리아마이드-이미드 필름.
- 제 7 항에 있어서, 상기 폴리이미드 필름은 필름 두께 10 내지 50㎛를 기준으로 열변형해석법(TMA-Method)에 의해 50 내지 250℃ 구간에서 1 내지 3회 반복하여 측정하였을 때, 첫번째 승온 곡선에서의 최소값(50℃에서 측정된 치수변형 값, A)과 냉각 곡선에서의 최소값(50℃에서 측정된 치수변형값, B)의 차이(|A-B|)로 정의되는 치수변형 차(△DC)가 100㎛ 이하인 것을 특징으로 하는 폴리아마이드-이미드 필름.
- 제 7 항의 폴리아마이드-이미드 필름을 포함하는 영상 표시소자.
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EP15875725.2A EP3241859A4 (en) | 2014-12-30 | 2015-12-30 | Polyamide-imide precursor, polyamide-imide film and display device comprising same |
US15/540,789 US10662290B2 (en) | 2014-12-30 | 2015-12-30 | Polyamide-imide precursor, polyamide-imide film and display device comprising same |
CN201580076813.1A CN107428962B (zh) | 2014-12-30 | 2015-12-30 | 聚酰胺-酰亚胺前体、聚酰胺-酰亚胺薄膜以及包括该薄膜的显示装置 |
JP2017534976A JP6837974B2 (ja) | 2014-12-30 | 2015-12-30 | ポリアミド−イミドフィルム及びこれを含む表示素子 |
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