WO2014204163A1 - 수지 조성물, 그 제조방법 및 이를 포함하는 광학 필름 - Google Patents
수지 조성물, 그 제조방법 및 이를 포함하는 광학 필름 Download PDFInfo
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- WO2014204163A1 WO2014204163A1 PCT/KR2014/005281 KR2014005281W WO2014204163A1 WO 2014204163 A1 WO2014204163 A1 WO 2014204163A1 KR 2014005281 W KR2014005281 W KR 2014005281W WO 2014204163 A1 WO2014204163 A1 WO 2014204163A1
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- resin
- resin composition
- weight
- acrylic resin
- optical film
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
Definitions
- the present invention relates to a resin composition, a method for producing the same, and an optical film including the same.
- the protective film used for the polarizing plate used in the liquid crystal display device may require ultraviolet absorbing performance in order to prevent the liquid crystal or polarizer from deterioration by ultraviolet rays. Therefore, a technique for producing a protective film having ultraviolet absorbing performance by adding an ultraviolet absorber to the resin composition has been proposed.
- ultraviolet absorbers include benzotriazole compounds, benzophenone compounds, cyano acrylate compounds, salicylic acid compounds and the like, and these ultraviolet absorbers are added during optical film production to prevent deterioration by ultraviolet rays. .
- the above-mentioned ultraviolet absorber is decomposed at the time of high temperature processing, and the quantity is reduced, so that the ultraviolet absorbing ability is lowered, and there is a problem of coloring the resin and the film in yellow.
- the compatibility of the acrylic resin with the ultraviolet absorbent is not good, there is a problem that the ultraviolet absorber is separated from the resin composition during the film film formation and outflow to the outside, there is a problem that the manufacturing equipment and the film is contaminated.
- An object of the present invention is to provide a resin composition having excellent heat resistance and excellent ultraviolet absorbing ability, a manufacturing method thereof, and an optical film including the same.
- 1st aspect of this invention provides the resin composition containing a granular thermoplastic acrylic resin and a triazine ultraviolet absorber.
- the 3rd aspect of this invention manufactures a resin pellet using the said resin composition, and provides the optical film manufactured using the said resin pellet.
- the optical film which is excellent in ultraviolet absorption ability but excellent in heat resistance can be manufactured.
- the optical film according to the third aspect of the present invention not only has an excellent ultraviolet ray blocking effect, but also has a high light transmittance in the visible light region and is excellent in heat resistance.
- the inventors of the present invention have been researched to develop a resin composition for an optical film that has excellent ultraviolet blocking effect and at the same time has an ultraviolet absorbing ability excellent in physical properties such as transparency, color and heat resistance. Reached.
- the resin composition of the present invention solves the kneading problem of the acrylic resin in the pellet form and the ultraviolet absorber by kneading the thermoplastic acrylic resin having a conventional pellet form into a particle shape and kneaded with an additive having an ultraviolet absorbing ability.
- the ultraviolet absorber is kneaded into the acrylic resin in the pellet form using a twin screw extruder, the kneading property is not good, so that the thermoplastic resin composition does not melt due to the ultraviolet absorber and flows out to the outside, which causes acrylic resin. It was very difficult to knead at least 1 part by weight of the ultraviolet absorbent with respect to 100 parts by weight.
- the resin composition according to the present invention is about 5 parts by weight of the ultraviolet absorbent with respect to 100 parts by weight of the acrylic resin, even if the content of the ultraviolet absorbent in the resin composition is significantly higher than the conventional solid-solid mixing (Solid-Solid Mixing) There is a merit that can be kneaded using a twin screw extruder. Therefore, when manufacturing an optical film using the resin composition of this invention, it can manufacture the optical film which is excellent in ultraviolet absorption ability but excellent in heat resistance.
- a resin composition comprising a particulate thermoplastic acrylic resin and an ultraviolet absorber.
- thermoplastic acrylic resin is a particulate resin having an average particle diameter in the range of 10 ⁇ m to 500 ⁇ m.
- the shape of the thermoplastic acrylic resin is not particularly limited as long as it is in a particulate form.
- it may be a spherical shape, a dumbbell shape, an elliptical shape, or the like, and in particular, it is preferable that the shape is bead.
- the conventional problem that it was difficult to knead 1 or more parts by weight of the ultraviolet absorber with respect to 100 parts by weight of the acrylic resin was solved, and with respect to 100 parts by weight of the acrylic resin only by solid-solid mixing
- the ultraviolet absorbent may contain up to 5 parts by weight. Therefore, since the kneading of the resin composition with a significantly higher content of the ultraviolet absorber than the conventional one is possible, the optical film produced using the resin composition according to the present invention is very excellent in the ultraviolet blocking effect.
- the average particle diameter of the particulate thermoplastic acrylic resin may range from 10 ⁇ m to 500 ⁇ m, from 50 ⁇ m to 400 ⁇ m or from 100 ⁇ m to 350 ⁇ m.
- the average particle diameter of the thermoplastic resin particles satisfies the above numerical range, when solid-solid mixing with the ultraviolet absorbent is formed, a large bulk of the resin particles and the ultraviolet absorbent is formed in the mixing tank to block the pipe. It is preventable and has the advantage of excellent extrusion kneading after solid-solid mixing.
- the said particulate thermoplastic acrylic resin contains the copolymer containing the (a) alkyl (meth) acrylate type unit and (b) styrene type unit.
- the particulate thermoplastic acrylic resin may further include an aromatic resin having a carbonate portion in the main chain.
- the alkyl (meth) acrylate-based unit gives a negative in-plane retardation (Rin) and a negative thickness direction retardation (Rth) to the film in the stretching process to a weak degree
- the styrene-based unit is a strong negative surface
- the internal phase difference Rin and the negative thickness direction phase difference Rth can be provided.
- the aromatic resin having a carbonate portion in the main chain can provide positive in-plane retardation (Rin) characteristics and positive thickness direction retardation (Rth) characteristics.
- the negative in-plane retardation means that the refractive index is greatest in the direction perpendicular to the stretching direction
- the positive in-plane retardation means that the refractive index is greatest in the stretching direction
- the negative thickness retardation means that the refractive index in the thickness direction is the plane. It means larger than the direction average refractive index
- a positive thickness direction retardation means that in-plane average refractive index is larger than thickness direction refractive index.
- the retardation characteristics of the optical film produced therefrom may vary depending on the composition, the stretching direction, the stretching ratio and the stretching method of each component. Therefore, in this invention, the composition and the extending
- the copolymer in the present specification means that an element referred to as a 'unit' in the present specification is polymerized into a monomer to be included as a repeating unit in the copolymer resin, and in the present specification, the copolymer is a block copolymer or It may be a random copolymer, but the copolymer form is not limited thereto.
- alkyl (meth) acrylate-based unit in the present specification includes both 'alkyl acrylate-based unit' and 'alkyl methacrylate-based unit', but is not limited thereto, optical transparency, commercial
- the alkyl moiety of the alkyl (meth) acrylate-based unit preferably has 1 to 10 carbon atoms, more preferably 1 to 4 carbon atoms, and is a methyl group or an ethyl group. More preferred.
- alkyl (meth) acrylate units are methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, t-butyl methacrylate, hydroxyethyl methacrylate , Isobonyl methacrylate and cyclohexyl methacrylate may be at least one selected from the group consisting of, but is not limited thereto.
- the alkyl (meth) acrylate-based unit includes 70 parts by weight to 98 parts by weight based on 100 parts by weight of the copolymer, more preferably contains 82 parts by weight to 97 parts by weight.
- the content satisfies the above range, a film having excellent transmittance and heat resistance of the optical film may be obtained, and the birefringence generated during stretching may be minimized.
- the (b) styrene-based unit can improve the polymerization efficiency between the monomers, the film produced by the resin composition comprising the same can easily control the stretching phase difference more excellent birefringence A zero retardation film having a property can be obtained.
- the (b) styrene-based unit may be an unsubstituted styrene monomer or a substituted styrene monomer.
- the substituted styrene monomer may be styrene substituted with a substituent containing an aliphatic hydrocarbon or hetero atom in a benzene ring or vinyl group.
- styrene substituted with C 1-4 alkyl or halogen can be used. More specifically, the styrene monomer may be used at least one selected from the group consisting of styrene, ⁇ -methyl styrene, p-bromo styrene, p-methyl styrene and p-chloro styrene, most preferably styrene, ⁇ -methylstyrene and p-methyl styrene.
- the content of the styrene monomer is preferably about 0.1 part by weight to about 10 parts by weight based on 100 parts by weight of the copolymer, and more preferably about 0.5 parts by weight to about 5 parts by weight. If the content of the styrene monomer meets the above range, it is because the stretching phase difference of the film can be easily adjusted to obtain a more preferable effect in terms of the optical properties of the film.
- the aromatic resin having a carbonate portion in the main chain contains 5 to 10,000 at least one unit represented by the following [Formula I].
- X is a divalent group comprising at least one benzene ring. More specifically, X is preferably a divalent group selected from the group consisting of the following structural formulas.
- the aromatic resin having a carbonate part in the main chain is added to the phase difference control may be included in an amount of 0.1 parts by weight to 10 parts by weight based on 100 parts by weight of the total thermoplastic acrylic resin composition, 1 part by weight to 5 It is more preferable to be included in about a weight part.
- the aromatic resin having a carbonate portion in the main chain is contained in a smaller amount than this, there is a problem that the thickness direction retardation of the stretched film is increased in a positive direction, and when included in an amount exceeding this, the thickness direction retardation of the stretched film is negative. There is a problem that increases in the direction of.
- the absolute value of the surface direction phase difference R in defined by the following [Formula 1] and the thickness direction defined by the following [Formula 2]
- the absolute value of the retardation (R th ) can be added by adjusting the content so as to be 5 nm or less, preferably 3 nm or less, more preferably 0, respectively.
- n x is the largest refractive index of the in-plane refractive index of the optical film
- n y is the refractive index of the direction perpendicular to n x of the in-plane refractive index of the optical film
- n z is the refractive index in the thickness direction
- d is the thickness of the film.
- the resin composition of the present invention including the copolymer resin and the aromatic resin having a carbonate portion in the main chain may be prepared using a method well known in the art, such as, for example, a compounding method.
- the copolymer comprising the (a) alkyl (meth) acrylate unit and (b) styrene unit is (c) at least one in terms of providing excellent heat resistance to the film produced using the same. It is preferable to further include a 3-membered to 6-membered heterocyclic unit substituted with a carbonyl group, wherein the heterocyclic unit is selected from the group consisting of maleic anhydride, maleimide, glutaric anhydride, glutalimide, lactone and lactam Can be.
- the copolymer resin and the main chain have a carbonate moiety.
- Compatibility with the aromatic resin can be improved.
- the (c) three- to six-membered heterocyclic unit substituted with at least one carbonyl group more specifically, for example, ethyl maleimide, n-butyl maleimide, t-butyl maleimide, cyclohexyl maleimide It is preferable that it is a maleimide derivative like a phenyl maleimide etc., and it is especially preferable that it is a phenyl maleimide type unit.
- the phenyl maleimide unit has a uniform chemical structure under the influence of a substituted phenyl group, thus making it easy to form copolymers with (a) alkyl (meth) acrylate units and (b) styrene units and improve heat resistance. This is because there is an advantage that the polymerization time is relatively short.
- phenyl maleimide-based unit is a group consisting of phenyl maleimide, nitrophenyl maleimide, monochlorophenyl maleimide, dichlorophenyl maleimide, monomethylphenyl maleimide, dimethylphenyl maleimide, and ethylmethylphenyl maleimide It is preferable that it is at least one selected from.
- the (c) at least one member of the three to six-membered heterocyclic unit substituted with a carbonyl group is preferably included in an amount of 0.1 parts by weight to 10 parts by weight with respect to 100 parts by weight of the copolymer resin.
- the content of the three to six-membered heterocyclic unit substituted with the at least one carbonyl group satisfies the numerical range, the optical film is excellent in heat resistance, and the resin properties become unstable, resulting in breakage of the optical film. It can prevent an easy state.
- the thermoplastic acrylic copolymer may further include an alkyl acrylate unit in order to impart polymerization stability and thermal stability to the resin composition and toughness to the stretched film.
- an alkyl acrylate unit in order to impart polymerization stability and thermal stability to the resin composition and toughness to the stretched film.
- the alkyl moiety of the alkyl acrylate monomer may be a cycloalkyl group or a substituted alkyl group, preferably has 1 to 10 carbon atoms, more preferably 1 to 6, and is a methyl group or an ethyl group. Most preferred. Specifically, it may be methyl acrylate, ethyl acrylate, isopropyl acrylate n-butyl acrylate, t-butyl acrylate, cyclohexyl acrylate, isobornyl acrylate, hydroxymethyl acrylate or hydroxyethyl acrylate. It is not limited to this.
- the alkyl acrylate-based unit may include about 0.1 parts by weight to about 5 parts by weight based on 100 parts by weight of the particulate thermoplastic acrylic copolymer, and more preferably about 0.5 parts by weight to about 3.0 parts by weight.
- the polymerization between the (a) alkyl (meth) acrylate-based unit and (c) at least one carbonyl group substituted with at least one carbonyl group at the time of copolymerization It is easy, it is possible to overcome the thermal decomposition phenomenon that can occur in the resin melting process, it is very advantageous because it has the effect that the stretching process is easily carried out by giving toughness when stretching the film.
- the glass transition temperature of the particulate thermoplastic acrylic resin used in the embodiment of the present invention is preferably 110 °C or more, for example, may be 115 °C or more, 120 °C or more or 125 °C or more.
- the ultraviolet absorber is not particularly limited in shape, but may be, for example, powder, granule, flake, liquid, or the like.
- the amount of the ultraviolet absorber may be 0.01 parts by weight to 5 parts by weight or 0.1 parts by weight to 4 parts by weight based on 100 parts by weight of the particulate thermoplastic acrylic resin.
- the ultraviolet absorber is included in a large amount in excess of 5 parts by weight, due to the lubricating action of the ultraviolet absorber during the manufacture of pellets, there is a problem in that the melting characteristics of the particulate thermoplastic acrylic resin are lowered and kneading is difficult.
- the glass transition temperature (Tg) of the resin composition tends to be greatly reduced when the ultraviolet absorber is included in an excessive amount, and when the film is manufactured using this, the heat resistance of the film may be greatly reduced.
- the ultraviolet absorbing performance is lowered, it can not exhibit the function of protecting the polarizer from the ultraviolet. That is, when the content of the ultraviolet absorbent satisfies the above numerical range, it is excellent in melting characteristics of the particulate thermoplastic acrylic resin, so that stable kneading can be performed when preparing resin pellets, and the glass transition temperature is reduced while having excellent ultraviolet absorption performance. Small width Therefore, when the resin composition according to the present invention is used, there is an advantage in that the production of an optical film having excellent UV blocking effect and excellent heat resistance at the same time is easy.
- the ultraviolet absorber is not particularly limited as long as it exhibits a maximum absorption wavelength ( ⁇ max) in the wavelength range of 380nm to 360nm, for example, it is preferably a triazine-based ultraviolet absorber, at least one hydroxyl group, aliphatic It is more preferable that it is a benzotriazine type ultraviolet absorber containing a compound and an aliphatic ether.
- the triazine-based UV absorber is preferably in the range of 300 to 2000, 500 to 1900 or 400 to 1800 molecular weight.
- the molecular weight of the ultraviolet absorber satisfies the numerical range, the thermal and mechanical properties of the particulate thermoplastic acrylic resin in which the ultraviolet absorber and the comonomer are formed are excellent, and the ultraviolet absorber does not precipitate out when the film is processed. There is this.
- the glass transition temperature of the resin composition of the present invention containing the above components may be, for example, about 120 ° C to 500 ° C, preferably about 125 ° C to 500 ° C, and more preferably about 125 ° C to 200 ° C.
- the higher the glass transition temperature of the resin composition the higher the temperature at which fusion occurs when it is produced as a raw material pellet for optical film production, so that pellets can be manufactured at a higher temperature, resulting in lower raw water pellets. Can be.
- the weight average molecular weight of the resin composition according to the present invention in terms of processability, heat resistance and productivity may be about 50,000 to 500,000 or 50,000 to 200,000.
- the molecular weight of the resin composition is less than 50,000, the brittleness of the film is greatly increased, so that the stretching of the film is impossible, and when the molecular weight is more than 200,000, the melt viscosity is increased so that the film extrusion process is impossible.
- the resin composition of the present invention may have a transparency (haze) of about 0.1% to 3%, and the light transmittance may be 90% or more.
- the yellow index value of the resin composition may be about 0.3 to about 2.0.
- the resin composition according to the first aspect of the present invention may be usefully used as an optical film because it is excellent in heat resistance and contains an ultraviolet absorbent and has excellent effect of absorbing ultraviolet rays.
- a method for preparing a particulate thermoplastic resin comprising kneading the acrylic resin and the ultraviolet absorber, wherein the kneading is performed by a kneader having a gear pump.
- the kneading is performed by a kneader having a gear pump as described above, uniformity with respect to the size of the raw material pellets prepared using the resin composition of the present invention can be ensured, which is very useful. Do.
- the step of preparing the acrylic resin may be carried out by, for example, solution polymerization, block polymerization, suspension polymerization or emulsion polymerization.
- the method for producing a resin composition according to the present invention in terms of facilitating the preparation of a resin composition having particles of 10 ⁇ m to 500 ⁇ m, 50 ⁇ m to 400 ⁇ m or 100 ⁇ m to 350 ⁇ m, suspension polymerization or emulsification Preference is given to performing by polymerization.
- the solution and the bulk polymerization may cause denaturation of the ultraviolet absorber during the polymerization due to the high polymerization temperature, and in the case of emulsion polymerization, it is difficult to satisfy the particle size range. There is a problem that requires further processing.
- the additive having the ultraviolet absorbing ability is kneaded into the particulate acrylic resin prepared by the above method.
- the kneading is performed by solid-solid mixing.
- the solid-solid mixing is easy to control the content of the ultraviolet absorber, there are various kinds of absorbents that can be used, there is a variety of advantages, it is suitable for the production of a thermoplastic resin having a UV absorbing function.
- the kneading may be performed by a kneader.
- a kneader for example, a single screw extruder or a twin screw extruder may be used.
- a kneader such as a twin screw extruder manufactured by Leistritz may be used, but is not limited thereto. .
- the ratio of the kneading portion may range from 0.15 to 0.5 or 0.2 to 0.4. If the ratio of the kneading unit is less than 0.15, there is a problem that the resin is extruded in the unmelted or unmixed state due to the lack of kneading property and meltability, and when the ratio is more than 0.4, resin decomposition may occur due to excessive kneading and melting property. .
- the ratio of the kneading portion refers to the ratio of the length of the kneading block to the total screw length.
- the step of kneading may be performed by a kneader equipped with a gear pump (gear pump) to ensure uniformity for the raw material pellet (pellet) size manufactured using a resin composition.
- a gear pump gear pump
- the uniformity of the pellet size is secured, it is possible to prevent the pressure instability caused by the discharge amount unevenness during the melt processing, thereby preventing the thickness variation and appearance defects of the film. That is, the problems as described above, that is, problems such as film thickness variation and appearance defects can be alleviated by using a kneader equipped with a gear pump capable of supplying a resin at a predetermined pressure.
- the resin pellets can maintain a constant size.
- the kneading may be performed by a kneader having a polymer filter.
- the polymer filter has a pore size of 50 ⁇ m or less, and when using a kneader having the polymer filter, there is an advantage of lowering the number of black spots of the resin composition to remove impurities.
- the polymer filter may be, for example, a polymer filter such as a leaf disk type or a candle type, and may be used in combination with a back filter, but is not limited thereto. It is not.
- the pore of the polymer filter is 50 ⁇ m or less there is an advantage that can produce a product having excellent appearance characteristics due to excellent impurity removal performance.
- Resin pellets (pellets) of the present invention prepared by the above method, the difference between the maximum particle size and the minimum particle diameter may be 5mm or less, 3mm or less or 2mm or less.
- the maximum and minimum difference of the pellet particle size satisfies the numerical range, it is possible to prevent the pressure instability caused by the discharge amount unevenness in the melt processing process using the pellet, thereby causing the film thickness deviation and appearance defects It can be prevented that there is a very advantageous advantage.
- the resin pellet may have a number of sunspots 0 / 100g to 10 / 100g, 0 / 100g to 8 / 100g, or 0 / 100g to 5 / 100g.
- the number of black spots of the pellets satisfies the above numerical range, it indicates that impurities are generated less. As a result, an optical film having excellent appearance characteristics can be obtained.
- the thickness is ensured by uniformity with respect to the size of the resin pellets produced using the resin composition, and the occurrence rate of impurities is significantly reduced.
- Excellent uniformity there is an advantage that can produce an optical film excellent in appearance characteristics.
- a resin pellet is prepared using a resin composition containing a particulate thermoplastic acrylic resin and a triazine ultraviolet absorber, and the optical produced using the resin pellet. Provide a film.
- the optical film may be prepared in the form of a film according to a method well known in the art, such as a solution caster method or an extrusion method. In view of economics, it is more preferable to use an extrusion method.
- an additive such as a modifier may be further added within a range that does not impair the physical properties of the film, and a uniaxial or biaxial stretching step may be further performed.
- the stretching step may be performed in the longitudinal direction (MD) stretching or in the transverse direction (TD) stretching, or both.
- either stretching may be performed first and then stretched in the other direction, or both directions may be stretched simultaneously.
- the stretching may be performed in one step, or may be carried out in multiple stages.
- longitudinal stretching stretching by the speed difference between the rolls can be performed
- transverse stretching a tenter can be used.
- the rail starting angle of the tenter is usually within 10 ° to suppress the bowing phenomenon occurring during the lateral stretching and to control the angle of the optical axis regularly. Even when the transverse stretching is carried out in multiple stages, the anti-boeing effect can be obtained.
- the stretching when the glass transition temperature of the resin composition is Tg, can be carried out at (Tg-20 °C) to (Tg + 30 °C), the temperature range begins to decrease the storage modulus, This refers to a region from the temperature at which the loss modulus becomes larger than the storage modulus to a temperature at which the orientation of the polymer chain is relaxed and lost.
- the glass transition temperature of the resin composition can be measured by a differential scanning calorimeter (DSC).
- DSC differential scanning calorimeter
- the temperature at the time of the stretching step is more preferably the glass transition temperature of the resin composition.
- Draw speeds range from 1 m / min to 100 m / min for universal testing machines (Zwick Z010) and 0.1 m / min to 2 m / min for pilot stretching machines. It is preferable to perform an extending
- the linear light transmittance in the wavelength range of 400nm to 800nm range from 85% to 98% or 90% to 95 Can be%.
- the straight light transmittance means transmittance excluding scattered light transmittance from total light transmittance.
- the linear light transmittance when measured in terms of the film thickness of 60 ⁇ m, the linear light transmittance may be 1% to 15% or 1% to 10% at a wavelength of 380nm.
- the linear light transmittance at the wavelength of 380nm satisfies the above numerical range, polarization of the polarizer may be prevented by ultraviolet rays, and the transmittance may be excellent even in the visible light region of the 400nm wavelength, and the color change of the polarizing plate may be prevented.
- the optical film according to the present invention may have a linear light transmittance of 0.01% to 5% or 0.02% to 3% at a wavelength of 290 nm when the thickness of the film is measured in terms of 60 ⁇ m.
- the straight light transmittance at the wavelength of 290nm satisfies the above numerical range, the polarization of the polarizer due to the strong ultraviolet energy is prevented, and the yellowing occurrence rate of the film is lowered.
- the optical film of the present invention is excellent in heat resistance, but includes an additive having ultraviolet absorbing performance, and thus has an effect of excellent ultraviolet absorbing ability, and has a high light transmittance in the visible region, and thus may be usefully used as a protective film. .
- the primary polymerization was carried out at 80 ° C., and after the suspension reached 80 ° C., it was confirmed that a polymerization peak was generated after about 60 minutes, and the temperature was raised to 115 ° C. to carry out secondary polymerization for about 40 minutes.
- the suspension was cooled to 30 ° C. to obtain a resin composition in the form of polymerized particles.
- the resin composition was used after washing with distilled water and dehydrating and drying.
- the resin composition showed a spherical particle form having an average particle diameter of 250 ⁇ m as confirmed using an optical microscope (LV100P, Nikon).
- the molten resin is supplied to the gear pump at a pressure of 50 bar, the polymer filter having a pore of 10 ⁇ m is again supplied at a pressure of 60 bar, and then discharged at a pressure of 30 bar from the die portion to feed the raw material pellets ( pellets) were prepared.
- the prepared resin was measured for glass transition temperature (Tg) at 10 °C / min temperature rising conditions using DSC (DSC823, Mettler Toledo).
- Tg glass transition temperature
- DSC DSC823, Mettler Toledo
- the prepared raw material pellets were confirmed the black spots of the pellets using a pellet inspection machine (Pellet Inspection PS25C, OCS).
- the raw pellets were hot-air dried at 80 ° C. for 6 hours, melted with an extruder at 260 ° C., and passed through a coat hanger-type T-die, and passed through a chrome plated casting roll and a drying roll. An optical film of 210 mu m was prepared.
- the film was oriented in the longitudinal direction (MD) and in the transverse direction (TD) at a speed of 200 mm / min at 131 ° C. to 135 ° C. under conditions of 10 ° C. higher than the glass transition temperature (Tg) of each film using an experimental film stretching equipment. 100% of each was stretched to prepare an optical film having a thickness of 55 ⁇ m.
- Example 1 the resin composition, the raw material pellet, and the optical film were manufactured by the same method except having used 1 weight part of NST5 (Swiss DKSH) as a triazine type ultraviolet absorber.
- NST5 Tin DKSH
- Example 1 the resin composition was manufactured by the same method except that 12.0g of polyvinyl alcohol solutions and 3.0g of 2,2'- azobis isobutyronitrile were added.
- the resin composition showed a spherical particle form having an average diameter of 5 ⁇ m as confirmed using an optical microscope (LV100P, Nikon).
- the raw material pellets were prepared in the same manner as in Example 1 using the resin composition, but the solid pellets did not proceed smoothly due to the aggregation of the spherical resin particles and the UV absorber after solid mixing. It was.
- Example 1 the resin composition was produced in the same manner except that 6.0 g of polyvinyl alcohol solutions and 0.8 g of 2,2'-azobis isobutyronitrile were added.
- the resin composition showed a spherical particle form having an average particle diameter of 550 ⁇ m as confirmed using an optical microscope (LV100P, Nikon).
- Example 1 after preparing a resin composition with the same composition and method, the raw material pellets were manufactured by the same method as Example 1 except not using an ultraviolet absorber using the said resin composition.
- an optical film having a thickness of 54 ⁇ m was prepared in the same manner as in Example 1 using the raw material pellets.
- Example 1 after preparing the resin composition with the same composition and method, a raw material pellet was prepared in the same manner as in Example 1 except that 6 parts by weight of the ultraviolet absorber based on 100 parts by weight of the resin composition.
- an optical film with a thickness of 57 ⁇ m was prepared in the same manner as in Example 1 using the raw material pellets.
- Example 1 the raw material pellets were prepared in the same manner, except that the resin compositions were prepared using the same composition and method, and then kneaded using a kneader in which the gear pump was removed in the process of manufacturing the raw material pellets using the resin composition.
- the resin compositions were prepared using the same composition and method, and then kneaded using a kneader in which the gear pump was removed in the process of manufacturing the raw material pellets using the resin composition.
- an optical film having a thickness of 55 ⁇ m was prepared in the same manner as in Example 1 using the raw material pellets.
- Example 1 after the resin composition was prepared with the same composition and method, the raw material was kneaded in the same manner except that the raw material pellets were kneaded using a kneader having a polymer filter having a pore size of 100 ⁇ m. Pellets were prepared.
- an optical film having a thickness of 52 ⁇ m was prepared in the same manner as in Example 1 using the raw material pellets.
- Example 1 after preparing a resin composition with the same composition and method, a raw material pellet was prepared in the same manner except that a triazole-based ultraviolet absorber (TINUVIN 326, BASF) was added to the resin composition.
- a triazole-based ultraviolet absorber TINUVIN 326, BASF
- an optical film having a thickness of 59 ⁇ m was prepared in the same manner as in Example 1 using the raw material pellets.
- a resin composition was prepared in the same manner as in Example 1, except that a monomer mixture consisting of 10 parts by weight of maleic anhydride, 23 parts by weight of styrene monomer, and 67 parts by weight of methyl methacrylate was used.
- a monomer mixture consisting of 92 parts by weight of methyl methacrylate, 5 parts by weight of N-phenylmaleimide, 2 parts by weight of ⁇ -methyl styrene and 1 part by weight of methacrylate was added to a toluene solvent in a weight ratio of 80:20 (monomer mixture: toluene).
- DCP dicumyl peroxide
- TDDM t-dodecyl mercaptan
- the optical film according to Examples 1 to 2 and Comparative Examples 1 to 7 observed the surface of the casting roll after 1 hour of film formation, and visually confirmed the degree of contamination by the ultraviolet absorber. At this time, the degree of contamination of the casting roll was divided into " ⁇ " when there was a cloudy part when visual observation of the roll surface, and " ⁇ " when maintaining the clean state as the glass surface. Moreover, the number of sunspots per unit area was confirmed using OHP (3M) which enlarged the manufactured optical film 6 times. The results are shown in the following [Table 3].
- Comparative Example 6 there was a problem of a large number of sunspots, in Comparative Example 8 it was difficult to manufacture the particulate acrylic resin due to the polymerization is not smooth, in the case of Comparative Example 9 the diameter of the resin is too large ultraviolet There was a problem that kneading with the absorbent was difficult.
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Abstract
Description
구분 | 수지 조성물의 입자형태 | 수지 조성물의 평균입경(㎛) | 자외선 흡수제 | 자외선 흡수제 함량(wt%) | 기어 펌프 유무 |
실시예 1 | 구형 | 250 | 트리아진계 | 1 | 유 |
실시예 2 | 구형 | 250 | 트리아진계 | 1 | 유 |
비교예 1 | 구형 | 5 | 트리아진계 | 1 | 유 |
비교예 2 | 타원형 | 550 | 트리아진계 | 1 | 유 |
비교예 3 | 구형 | 250 | - | - | 유 |
비교예 4 | 구형 | 250 | 트리아진계 | 6 | 유 |
비교예 5 | 구형 | 250 | 트리아진계 | 1 | 무 |
비교예 6 | 구형 | 250 | 트리아진계 | 1 | 유 |
비교예 7 | 구형 | 250 | 트리아졸계 | 1 | 유 |
비교예 8 | 입자 형성 불가 | - | - | - | - |
비교예 9 | 3mm-5mm 직경을 갖는 수지가 제조됨. | - | - | - |
구분 | 입자 뭉침 | 용융 압출성 | 펠렛 직경(mm) | Tg (℃) | 흑점 개수(n/100g) |
실시예 1 | X | O | 2-3 | 125 | 1 |
실시예 2 | X | O | 2-3 | 125 | 1 |
비교예 1 | O | O | 2-3 | 125 | 0 |
비교예 2 | X | X | 2-3 | 125 | 1 |
비교예 3 | X | O | 2-3 | 125 | 1 |
비교예 4 | X | O | 2-3 | 122 | 2 |
비교예 5 | X | O | 1-5 | 125 | 1 |
비교예 6 | X | O | 2-3 | 125 | 30 |
비교예 7 | X | O | 2-3 | 123 | 1 |
구분 | 필름 두께(㎛) | 롤 오염 | 흑점 개수(n/m2) | 투과도(%) | Yellow Index | |
380nm | 290nm | |||||
실시예 1 | 55 | X | 0 | 1.21 | 4.43 | 2.9 |
실시예 2 | 55 | X | 0 | 1.26 | 4.17 | 3.2 |
비교예 1 | - | - | - | - | - | - |
비교예 2 | - | - | - | - | - | - |
비교예 3 | 54 | X | 1 | 92.1 | 90.8 | 1.1 |
비교예 4 | 57 | O | 2 | 0 | 0 | 4.8 |
비교예 5 | 55 | X | 2 | 1.2 | 4.44 | 2.9 |
비교예 6 | 52 | X | 24 | 1.29 | 4.52 | 2.8 |
비교예 7 | 59 | O | 1 | 18.7 | 8.81 | 1.4 |
Claims (18)
- 입자형 열 가소성 아크릴계 수지; 및트리아진계 자외선 흡수제를 포함하는 수지 조성물.
- 제1항에 있어서,상기 입자형 열 가소성 아크릴계 수지는 평균 입경이 10㎛ 내지 500㎛ 범위인 수지 조성물.
- 제1항에 있어서,상기 입자형 열 가소성 아크릴계 수지는 알킬(메트)아크릴레이트계 단위 및 스티렌계 단위를 포함하는 공중합체를 포함하는 것인 수지 조성물.
- 제3항에 있어서,상기 입자형 열 가소성 아크릴계 수지는 주쇄에 카보네이트 부를 갖는 방향족계 수지를 더 포함하는 것인 수지 조성물.
- 제1항에 있어서,상기 입자형 열 가소성 아크릴계 수지는 알킬(메트)아크릴레이트계 단위, 스티렌계 단위 및 적어도 하나의 카르보닐기로 치환된 3원소 내지 6원소 헤테로고리 단위를 포함하는 공중합체를 포함하는 것인 수지 조성물.
- 제1항에 있어서,상기 입자형 열 가소성 아크릴계 수지는 알킬(메트)아크릴레이트계 단위, 스티렌계 단위, 적어도 하나의 카르보닐기로 치환된 3원소 내지 6원소 헤테로고리 단위 및 알킬아크릴레이트계 단위를 포함하는 공중합체를 포함하는 것인 수지 조성물.
- 제1항에 있어서,상기 트리아진계 자외선 흡수제의 함량은 입자형 열 가소성 아크릴계 수지 100 중량부에 대하여 0.1 중량부 내지 5 중량부 범위인 수지 조성물.
- 제1항에 있어서,상기 트리아진계 자외선 흡수제의 중량평균 분자량은 300 내지 2000 범위인 수지 조성물.
- 제1항 내지 제8항 중 어느 한 항의 수지 조성물을 이용하여 제조된 수지 펠렛.
- 제9항에 있어서,상기 수지 펠렛은 흑점 개수가 0개/100g 내지 10개/100g 범위인 수지 펠렛.
- 제9항에 있어서,상기 수지 펠렛은 최대 입경과 최소 입경의 차가 5mm 이하인 수지 펠렛.
- 입자형의 열 가소성 아크릴계 수지를 제조하는 단계; 및상기 입자형 아크릴계 수지 및 트리아진계 자외선 흡수제를 혼련하는 단계를 포함하고,상기 혼련하는 단계는 기어 펌프(gear pump)를 구비한 혼련기에 의해 수행되는 것인 수지 조성물의 제조방법.
- 제12항에 있어서,상기 입자형 아크릴계 수지는 평균 입경이 10㎛ 내지 500㎛ 범위인 수지 조성물의 제조방법.
- 제12항에 있어서,상기 입자형 열 가소성 아크릴계 수지를 제조하는 단계는 현탁중합(Suspension Polymerization) 또는 유화중합(Emulsion Polymerization)에 의해 수행되는 것인 수지 조성물의 제조방법.
- 제12항에 있어서,상기 혼련하는 단계는 50㎛ 이하의 공극(pore) 크기를 갖는 폴리머 필터를 구비한 혼련기에 의해 수행되는 것인 수지 조성물의 제조방법.
- 제9항의 수지 펠렛을 이용하여 제조된 광학 필름.
- 제16항에 있어서,상기 광학 필름은 두께 60㎛로 환산하여 측정한 경우, 380nm 파장에서 직진 광 투과율이 1% 내지 15% 인 광학 필름.
- 제16항에 있어서,상기 광학 필름은 두께 60㎛로 환산하여 측정한 경우, 290nm 파장에서 직진 광 투과율이 0.01% 내지 5% 인 광학 필름.
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US14/386,254 US20160244593A1 (en) | 2013-06-18 | 2014-06-17 | Resin composition, preparation method thereof and optical film including the same |
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US20180074241A1 (en) * | 2015-03-17 | 2018-03-15 | Lms Co.,Ltd | Optical filter and imaging device comprising same |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008158295A (ja) * | 2006-12-25 | 2008-07-10 | Nitto Denko Corp | 光学フィルムの製造方法、光学フィルム、偏光板、および画像表示装置 |
JP2009036797A (ja) * | 2007-07-31 | 2009-02-19 | Nitto Denko Corp | 光学フィルム、偏光板、および画像表示装置 |
JP2010270162A (ja) * | 2009-04-22 | 2010-12-02 | Kaneka Corp | 光学用フィルム |
JP2011063721A (ja) * | 2009-09-17 | 2011-03-31 | Kaneka Corp | 電子線照射用アクリル系樹脂フィルム |
KR20110114688A (ko) * | 2007-06-14 | 2011-10-19 | 니폰 쇼쿠바이 컴파니 리미티드 | 열가소성 수지 조성물과 그것을 이용한 수지 성형품 및 편광자 보호 필름 및 수지 성형품의 제조 방법 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7252865B2 (en) * | 2004-09-20 | 2007-08-07 | Eastman Kodak Company | Protective films containing compatible plasticizer compounds useful in polarizing plates for displays and their method of manufacture |
KR101226343B1 (ko) * | 2005-03-31 | 2013-01-24 | 닛토덴코 가부시키가이샤 | 편광자 보호 필름, 편광판, 및 화상 표시 장치 |
JP4805785B2 (ja) * | 2006-10-24 | 2011-11-02 | Mgcフィルシート株式会社 | 防眩性積層体、塗膜防眩性積層体、防眩性材料、及び該防眩性材料の製造方法 |
KR100955571B1 (ko) * | 2007-01-05 | 2010-04-30 | 주식회사 엘지화학 | 트리아진 구조의 아미노 수지가 혼합된 폴리아릴레이트수지를 포함하는 광학필름용 수지 조성물 및 이를 이용하여제조된 광학필름 |
JP2009163216A (ja) * | 2007-12-11 | 2009-07-23 | Sumitomo Chemical Co Ltd | 偏光板のセット、ならびにこれを用いた液晶パネルおよび液晶表示装置 |
JP2009098701A (ja) * | 2007-12-27 | 2009-05-07 | Adeka Corp | 光学フィルム及び光学シート |
-
2014
- 2014-06-17 WO PCT/KR2014/005281 patent/WO2014204163A1/ko active Application Filing
- 2014-06-17 CN CN201480000914.6A patent/CN104395396A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008158295A (ja) * | 2006-12-25 | 2008-07-10 | Nitto Denko Corp | 光学フィルムの製造方法、光学フィルム、偏光板、および画像表示装置 |
KR20110114688A (ko) * | 2007-06-14 | 2011-10-19 | 니폰 쇼쿠바이 컴파니 리미티드 | 열가소성 수지 조성물과 그것을 이용한 수지 성형품 및 편광자 보호 필름 및 수지 성형품의 제조 방법 |
JP2009036797A (ja) * | 2007-07-31 | 2009-02-19 | Nitto Denko Corp | 光学フィルム、偏光板、および画像表示装置 |
JP2010270162A (ja) * | 2009-04-22 | 2010-12-02 | Kaneka Corp | 光学用フィルム |
JP2011063721A (ja) * | 2009-09-17 | 2011-03-31 | Kaneka Corp | 電子線照射用アクリル系樹脂フィルム |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180074241A1 (en) * | 2015-03-17 | 2018-03-15 | Lms Co.,Ltd | Optical filter and imaging device comprising same |
US10725215B2 (en) * | 2015-03-17 | 2020-07-28 | Lms Co., Ltd | Optical filter and imaging device comprising same |
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