KR100654749B1 - Acrylic copolymer resin and light-diffusion film using the same - Google Patents
Acrylic copolymer resin and light-diffusion film using the same Download PDFInfo
- Publication number
- KR100654749B1 KR100654749B1 KR1020050025599A KR20050025599A KR100654749B1 KR 100654749 B1 KR100654749 B1 KR 100654749B1 KR 1020050025599 A KR1020050025599 A KR 1020050025599A KR 20050025599 A KR20050025599 A KR 20050025599A KR 100654749 B1 KR100654749 B1 KR 100654749B1
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- parts
- light
- film
- acrylate
- Prior art date
Links
Classifications
-
- 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
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- 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
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- 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
-
- 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
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- 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
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
-
- 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
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1812—C12-(meth)acrylate, e.g. lauryl (meth)acrylate
-
- 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
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/28—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
- C08F220/281—Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety and containing only one oxygen, e.g. furfuryl (meth)acrylate or 2-methoxyethyl (meth)acrylate
-
- 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
-
- 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
- G02B5/02—Diffusing elements; Afocal elements
Abstract
본 발명은 아크릴 공중합 수지 및 이를 이용한 광확산 필름에 관한 것으로서, 메틸메타아크릴레이트 100중량부; 부틸아크릴레이트, 로릴메타아크릴레이트, 에틸헥실아크릴레이트, 3-에톡시프로필아크릴레이트, 2-메톡시에틸아크릴레이트중 선택된 1종 이상 40~73중량부와; 2-하이드록시에틸메타아크릴레이트 또는 2-하이드록시에틸아크릴레이트 1~20중량부; 메타아크릴산 또는 아크릴산 0.2~10중량부의 조성으로 이루어진 단량체 조성물과 상기 단량체 조성물 100 중량부에 대하여 중합개시제 0.5~2.5 중량부를 포함하는 조성물을 공중합한 아크릴 공중합 수지 및 이를 이용한 광확산 필름를 제공한다.The present invention relates to an acrylic copolymer resin and a light diffusion film using the same, 100 parts by weight of methyl methacrylate; 40 to 73 parts by weight of one or more selected from butyl acrylate, lauryl methacrylate, ethylhexyl acrylate, 3-ethoxypropyl acrylate and 2-methoxyethyl acrylate; 1 to 20 parts by weight of 2-hydroxyethyl methacrylate or 2-hydroxyethyl acrylate; Provided are an acrylic copolymer resin copolymerized with a monomer composition composed of 0.2 to 10 parts by weight of methacrylic acid or acrylic acid and a composition including 0.5 to 2.5 parts by weight of a polymerization initiator with respect to 100 parts by weight of the monomer composition, and a light diffusion film using the same.
이로써, 본 발명은 유리전이온도가 상온과 유사하여 광확산 필름에 적용시 어느 정도의 점성을 가짐으로서, 광확산 필름에 적용시 기재필름과의 부착력이 우수하고, 광확산 입자의 분산성을 좋게 하고, 광확산 입자의 박리, 탈리 현상을 방지할 수 있고, 또한, 휘도 특성이 우수한 광확산 필름을 제조할 수 있는 아크릴 공중합 수지를 제공하였으며, 또한, 이를 이용한 상술한 특성이 우수한 광확산 필름을 제공하였다. Thus, the present invention has a certain viscosity when the glass transition temperature is similar to the room temperature when applied to the light diffusing film, excellent adhesion to the base film when applied to the light diffusing film, good dispersion of light diffusing particles In addition, the present invention provides an acrylic copolymer resin capable of preventing peeling and detachment of the light diffusing particles and producing a light diffusing film having excellent luminance characteristics. Provided.
액정 디스플레이, 광확산 필름, 유리전이온도, 휘도, 분산성 Liquid Crystal Display, Light Diffusion Film, Glass Transition Temperature, Brightness, Dispersibility
Description
본 발명은 아크릴 공중합 수지 및 이를 이용한 광확산 필름에 관한 것으로서, 더욱 상세하게는 액정 디스플레이 장치에 사용되는 광확산 필름용 바인더 수지에 이용되는 아크릴 공중합 수지 및 이를 이용한 광확산 필름에 관한 것이다.The present invention relates to an acrylic copolymer resin and a light diffusion film using the same, and more particularly, to an acrylic copolymer resin used in a binder resin for a light diffusion film used in a liquid crystal display device and a light diffusion film using the same.
액정 디스플레이 장치에 사용되는 광확산 필름용 바인더 수지로는 투명하면서도, 바인더 수지에 혼합되는 광확산 입자들을 잘 분산시켜 입자와의 상용성이 뛰어나며, 기재필름과의 접착력이 우수하고 상기 광확산 입자들이 제 기능을 수행할 수 있도록 내마모성 및 부착력이 우수하여 광확산 입자들의 탈리 현상이 발생되지 않아야 한다. The light diffusion film binder resin used in the liquid crystal display device is transparent, but it is excellent in compatibility with the particles by dispersing the light diffusion particles mixed in the binder resin, excellent adhesion to the base film and the light diffusion particles The wear resistance and adhesion are excellent so that the desorption phenomenon of the light diffusing particles may not occur.
종래 액정 디스플레이 장치에 사용되는 광확산 필름용 바인더 수지로는 대부분 건축용 도료 수지나 일반 범용 수지로 개발된 아크릴 수지를 사용하고 있다. 이러한 기존의 광확산 필름용 바인더 수지로서의 아크릴 수지는 중합 후의 유리전이 온도가 60℃ 이상으로 상온보다 현저히 높으므로, 광확산 필름과 기재필름 간의 부착력 및 내마모성이 약하여 기재필름에 코팅한 후에 작은 충격에 의해서도 광확산 입자의 탈리 현상 및 도막의 깨짐 현상이 발생하는 등 광확산 필름의 바인더 수지로 적용함에 있어서 문제점이 있었다. Conventionally, as a binder resin for a light diffusion film used in a liquid crystal display device, an acrylic resin developed as a construction paint resin or a general general purpose resin is used. The acrylic resin as a binder resin for a conventional light diffusing film has a glass transition temperature of 60 ° C. or higher after polymerization, which is significantly higher than room temperature. Therefore, the adhesion and abrasion resistance between the light diffusing film and the base film are weak, so that a small impact after coating on the base film is achieved. There was also a problem in applying to the binder resin of the light diffusing film, such as desorption phenomenon of the light diffusion particles and cracking of the coating film occurs.
또한, 기존의 광확산 필름용 바인더 수지로서의 아크릴 수지는 중합 시 사용되는 단량체들의 종류 및 함량에 의해서 기재필름과 광확산 입자들 간의 접착력을 결정하게 되므로, 이러한 사항들을 고려하여 단량체의 종류 및 함량 등을 조절하지 않게 되면, 광확산 필름으로서의 제 기능을 수행하지 못하는 문제점이 있는 것이다.In addition, the conventional acrylic resin as a binder resin for the light diffusion film determines the adhesion between the base film and the light diffusion particles according to the type and content of the monomers used in the polymerization, the kind and content of the monomer in consideration of these matters, etc. If not controlled, there is a problem that can not perform the function as a light diffusion film.
본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 중합 후의 유리전이온도가 상온과 비슷하도록 조절된 광확산 필름용 바인더 수지로서의 아크릴 공중합 수지를 제공함으로서, 바인더 수지의 중합 후 기재필름 및 광확산 입자와의 접착력 및 광확산 입자의 분산성을 좋게 하고, 광확산 필름의 제조 후에도 광확산 입자의 탈리 현상 및 깨짐현상 등이 일어나지 않도록 하는 광확산 필름용 바인더 수지로서의 아크릴 공중합 수지 및 이를 이용한 광확산 필름을 제공하는 데 그 목적이 있다.The present invention is to solve such a problem, by providing an acrylic copolymer resin as a binder resin for the light-diffusion film is adjusted so that the glass transition temperature after polymerization is similar to room temperature, and after the polymerization of the binder resin and the base film and the light-diffusion particles The acrylic copolymer resin as a binder resin for light-diffusion film and the light-diffusion film using the same which improve the adhesion of the light and the dispersibility of the light-diffusion particles, and do not occur detachment and breakage of the light-diffusion particles even after the production of the light-diffusion film The purpose is to provide.
본 발명은 메틸메타아크릴레이트 100중량부; 부틸아크릴레이트, 로릴메타아크릴레이트, 에틸헥실아크릴레이트, 3-에톡시프로필아크릴레이트, 2-메톡시에틸아크릴레이트중 선택된 1종 이상 40~73중량부와; 2-하이드록시에틸메타아크릴레이트 또는 2-하이드록시에틸아크릴레이트 1~20중량부; 메타아크릴산 또는 아크릴산 0.2~10중량부의 조성으로 이루어진 단량체 조성물과 상기 단량체 조성물 100 중량부에 대하여 중합개시제 0.5~2.5 중량부를 포함하는 조성물을 공중합한 아크릴 공중합 수지를 제공한다.The present invention is 100 parts by weight of methyl methacrylate; 40 to 73 parts by weight of one or more selected from butyl acrylate, lauryl methacrylate, ethylhexyl acrylate, 3-ethoxypropyl acrylate and 2-methoxyethyl acrylate; 1 to 20 parts by weight of 2-hydroxyethyl methacrylate or 2-hydroxyethyl acrylate; Provided is an acrylic copolymer resin obtained by copolymerizing a monomer composition composed of methacrylic acid or 0.2 to 10 parts by weight of acrylic acid and a composition including 0.5 to 2.5 parts by weight of a polymerization initiator based on 100 parts by weight of the monomer composition.
상기 아크릴 공중합 수지는 유리전이온도가 20~40℃인 것을 특징으로 한다.The acrylic copolymer resin is characterized in that the glass transition temperature is 20 ~ 40 ℃.
상기 중합 개시제는 상기 단량체 조성물을 공중합하기 위하여 라디칼 중합이 가능한 중합개시제로서 BPO(Benzoyl peroxide), TBPO(Isooctyl tert-buthyl ester peroxide), TBPB(Benzoate tert-buthyl ester peroxide), DTBPO(Di- tert-butyl peroxide), AIBN(Azobisisobutyronitrile)으로 이루어진 군으로부터 선택된 1종 이상인 것이 바람직하다. The polymerization initiator is a polymerization initiator capable of radical polymerization in order to copolymerize the monomer composition, BPO (Benzoyl peroxide), TBPO (Isooctyl tert-buthyl ester peroxide), TBPB (Benzoate tert-buthyl ester peroxide), DTBPO (Di-tert- butyl peroxide), AIBN (Azobisisobutyronitrile) is preferably one or more selected from the group consisting of.
또한 본 발명은 기재 필름과 상기 기재필름의 일면 또는 양면에 형성된 광학산층을 포함하는 광확산 필름에 있어서, 상기 광확산층이 상기의 아크릴 공중합 수지인 바인더 수지와; 광확산 입자와; 경화제를 포함하는 것을 특징으로 하는 광확산 필름을 제공한다.The present invention also provides a light diffusion film comprising a base film and an optical diffusion layer formed on one or both sides of the base film, the light diffusion layer is a binder resin of the acrylic copolymer resin; Light diffusing particles; It provides a light diffusing film comprising a curing agent.
상기 광확산 필름은 대전 방지제를 더 포함하는 것을 특징으로 한다.The light diffusion film is characterized in that it further comprises an antistatic agent.
이하 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail.
본 발명에서 사용되는 기본 단량체는 메틸메타아크릴레이트로서, 중합 시의 강도특성을 향상시켜 주는 동시에 중합된 후 아크릴 수지의 투명성을 부여하여 광원의 통과를 용이하게 하나, 그 자체의 유리전이온도가 100~105℃로서 상온보다 높기 때문에 전체 단량체 양에 대하여 약 50 ~ 70중량%로 적용하는 것이 바람직하다. 만약 전체 단량체 양에 대하여 약 70중량% 초과하여 사용하면 중합된 아크릴 공중합 수지 전체의 유리전이온도가 상온보다 높게 형성되어, 이를 광확산 필름에 적용하게 될 경우, 광확산 필름의 도막이 깨지게 되는 문제가 발생한다. 또한 전체 단량체 양에 대하여 약 50중량% 미만으로 사용하면 중합 후의 아크릴 공중합 수지의 투명성 떨어지므로 이를 적용한 광확산 필름의 광투과율이 저하되는 결과가 발생한다.The basic monomer used in the present invention is methyl methacrylate, which improves the strength characteristics at the time of polymerization and at the same time, provides the transparency of the acrylic resin after polymerization, thereby facilitating the passage of the light source, and has its own glass transition temperature of 100. Since it is higher than normal temperature as -105 degreeC, it is preferable to apply about 50 to 70 weight% with respect to the total monomer amount. If it is used in excess of about 70% by weight relative to the total monomer amount, the glass transition temperature of the entire polymerized acrylic copolymer resin is formed higher than room temperature, and when applied to the light diffusion film, there is a problem that the coating film of the light diffusion film is broken Occurs. In addition, when used in less than about 50% by weight relative to the total amount of monomers, the transparency of the acrylic copolymer resin after polymerization is inferior, resulting in a decrease in the light transmittance of the light-diffusion film to which it is applied.
상기 에틸헥실아크릴레이트, 부틸아크릴레이트, 로릴메타아크릴레이트, 2-메톡시에틸아크릴레이트, 3-에톡시프로필아크릴레이트는 각각을 단독으로 중합시켰을때 자체의 유리전이온도가 0℃이하이므로 중합 후 아크릴 수지의 유연성을 증가시키는 역할을 하며, 에틸헥실아크릴레이트, 부틸아크릴레이트, 로릴메타아크릴레이트, 2-메톡시에틸아크릴레이트, 3-에톡시프로필아크릴레이트의 군으로부터 1종 이상을 선택하여 상기 메틸메타아크릴레이트 100중량부에 대하여 40~73중량부 사용한 다. 만약 40중량부 미만인 경우에는 중합 후의 아크릴 공중합 수지의 유리전이온도를 낮추어 유연성을 증가시키는 효과를 얻을 수 없으며, 73중량부 초과하여 사용하는 경우에는 중합 후의 아크릴 공중합 수지의 유리전이온도가 너무 감소되어 광확산 필름용 바인더로서 기능을 발휘할 수 없게 된다. The ethylhexyl acrylate, butyl acrylate, lauryl methacrylate, 2-methoxyethyl acrylate, and 3-ethoxy propyl acrylate have their glass transition temperatures of 0 ° C. or less when they are individually polymerized, and then after polymerization. It serves to increase the flexibility of the acrylic resin, and at least one selected from the group of ethylhexyl acrylate, butyl acrylate, lauryl methacrylate, 2-methoxyethyl acrylate, 3-ethoxypropyl acrylate 40-73 weight part is used with respect to 100 weight part of methyl methacrylates. If it is less than 40 parts by weight, the glass transition temperature of the acrylic copolymer after polymerization is not lowered to increase the flexibility, and when used in excess of 73 parts by weight, the glass transition temperature of the acrylic copolymer resin after polymerization is too reduced. The function as the binder for the light diffusion film cannot be exhibited.
한편, 본 발명의 아크릴 공중합 수지는 2-하이드록시에틸메타아크릴레이트 또는 2-하이드록시에틸아크릴레이트를 포함하여 중합되는데, 이는 상기 아크릴 공중합 수지 조성물의 중합 후 광확산 필름을 제조하기 위하여 더 포함되는 경화제와 열경화 반응을 통하여 최종적으로 우레탄 결합을 시키기 위하여 포함되는 것이다. 이로써, 광확산 필름의 제조시 더 포함되는 광확산 입자를 단단히 고정시킬 수 있는 것이다. Meanwhile, the acrylic copolymer resin of the present invention is polymerized to include 2-hydroxyethyl methacrylate or 2-hydroxyethyl acrylate, which is further included to prepare a light diffusion film after polymerization of the acrylic copolymer resin composition. It is included to finally make a urethane bond through a curing agent and a thermosetting reaction. Thereby, the light-diffusion particles further included in the production of the light-diffusion film can be fixed firmly.
상기 2-하이드록시에틸메타아크릴레이트 또는 2-하이드록시에틸아크릴레이트는 상기 메틸메타아크릴레이트 100중량부에 대하여 1~20중량부 포함되는데, 만약 20 중량부를 초과하면 광확산필름에 추가로 포함되는 대전방지제의 성능을 저하시키는 결과를 초래한다. 즉 광확산필름에 사용하는 대전방지제는 일반적으로 양이온계열의 대전방지제이므로 하이드록시기가 20중량부를 초과해서 들어가는 경우는 경화제와 열경화 반응을 하고 남은 미반응의 하이드록시기와 대전방지제의 양이온간의 정전기적 인력 인하여 대전방지제가 광확산필름의 표면에서 대전방지성을 발휘 할 수 없게 된다. 만약 1 중량부 미만으로 사용하면 경화제와의 충분한 열경화 반 응이 일어나지 않아서 적절한 우레탄 결합이 형성되지 않으므로 도막 강도가 약해지는 현상이 초래된다. The 2-hydroxyethyl methacrylate or 2-hydroxyethyl acrylate is included 1 to 20 parts by weight based on 100 parts by weight of the methyl methacrylate, if more than 20 parts by weight is further included in the light diffusion film This results in lowering the performance of the antistatic agent. That is, since the antistatic agent used in the light diffusion film is generally a cationic antistatic agent, when the hydroxyl group exceeds 20 parts by weight, the electrostatic charge between the unreacted hydroxy and the antistatic agent remaining after the heat curing reaction with the curing agent is prevented. The attraction prevents the antistatic agent from exerting antistatic properties on the surface of the light diffusion film. If the amount is less than 1 part by weight, sufficient thermosetting reaction with the curing agent does not occur, so that a suitable urethane bond is not formed, resulting in a weakening of the coating film strength.
또한 본 발명의 아크릴 공중합 수지에 포함되는 메타아크릴산 또는 아크릴산은 상기 바인더 수지 조성물의 중합 후 기재필름과의 접착력을 증대시키는 역할을 수행하며, 상기 메틸메타아크릴레이트 100중량부에 대하여 0.2~10중량부 포함한다. 만약, 10 중량부를 초과하여 사용하는 경우 광확산 필름을 제조하기 위하여 더 포함되는 대전방지제의 성능을 저하시켜 제조된 광확산 필름의 코팅층에 이물질의 침투가 용이하게 되어 전체 광확산 필름의 성능을 저하시키는 문제가 있다. 그리고 0.2 중량부 미만으로 사용하는 경우 기재필름과의 접착력 증대의 효과를 기대하기 어렵다.In addition, methacrylic acid or acrylic acid contained in the acrylic copolymer resin of the present invention serves to increase the adhesive strength with the base film after the polymerization of the binder resin composition, 0.2 to 10 parts by weight based on 100 parts by weight of the methyl methacrylate Include. If it is used in excess of 10 parts by weight, the performance of the antistatic agent further included in order to manufacture the light diffusing film is reduced to facilitate the penetration of foreign matter into the coating layer of the light diffusing film manufactured to reduce the performance of the overall light diffusing film. There is a problem. And when used in less than 0.2 parts by weight it is difficult to expect the effect of increasing the adhesive strength with the base film.
상기 아크릴 공중합 수지의 단량체는 중합 개시제의 존재 하에서 용액 중합으로 공중합시킬 수 있는데, 사용되는 중합 개시제로는 라디칼 중합이 가능한 과산화물로써 BPO(Benzoyl peroxide), TBPO(Isooctyl tert-buthyl ester peroxide), TBPB(Benzoate tert-buthyl ester peroxide), DTBPO(Di- tert-butyl peroxide), AIBN(Azobisisobutyronitrile)으로 이루어진 군으로부터 선택된 1종 이상을 사용한다. 상기 중합 개시제의 선택은 반응 온도에 맞게 적절하게 선정할 수 있다.The monomers of the acrylic copolymer resin may be copolymerized by solution polymerization in the presence of a polymerization initiator. The polymerization initiators used may include radicals capable of radical polymerization, such as Benzoyl peroxide (BPO), Isoctyl tert-buthyl ester peroxide (TBPO), and TBPB ( At least one selected from the group consisting of benzoate tert-buthyl ester peroxide (DBPO), ditert-butyl peroxide (DTBPO) and Azobisisobutyronitrile (AIBN) is used. The selection of the polymerization initiator can be appropriately selected according to the reaction temperature.
상기 중합 개시제의 사용량은 분자량에 큰 영향이 있으므로 적정량 사용하는 것이 중요한데, 상기 단량체 조성물 100 중량부에 대하여 0.5~2.5중량부 사용하는 것이 좋다.Since the amount of the polymerization initiator has a large influence on the molecular weight, it is important to use an appropriate amount, but it is preferable to use 0.5 to 2.5 parts by weight based on 100 parts by weight of the monomer composition.
상기 용액중합에 사용되는 용매로는 탄화수소계, 알코올계, 에스테르계, 케톤계, 에텔렌 글리콜 유도체 등이 사용 가능하고, 용매의 선택은 건조성 반응온도, 분자량을 고려하여 사용한다. 또한 용액중합에 사용되는 용제는 작업성이 양호한 방향족 계통의 탄화수소계를 주로 사용한다.Hydrocarbons, alcohols, esters, ketones, ethylene glycol derivatives and the like may be used as the solvent used for the solution polymerization, and the solvent may be selected in consideration of the drying reaction temperature and the molecular weight. In addition, the solvent used for the solution polymerization mainly uses a hydrocarbon system of an aromatic system having good workability.
용액중합의 반응온도는 분자량에 관계가 있으므로 분자량에 맞게 선정하는데, 보통 70~120℃에서 반응을 실시한다.Since the reaction temperature of solution polymerization is related to the molecular weight, it is selected according to the molecular weight. Usually, the reaction is performed at 70 to 120 ° C.
상기와 같이 제조된 공중합체는 분자량이 약 20,000~100,000이며, 유리전이온도는 25~40℃이다.The copolymer prepared as described above has a molecular weight of about 20,000 to 100,000 and a glass transition temperature of 25 to 40 ° C.
본 발명인 광확산 필름은 상술한 아크릴 공중합 수지를 사용하는 것으로서, 기재필름과; 상기 기재 필름의 일면 또는 양면에 형성된 광확산층을 포함하며, 상기 광확산층은 바인더 수지로서 상술한 아크릴 공중합 수지와, 광확산 입자와, 경화제를 포함하는 조성물을 경화시킴으로서 형성되는 것을 특징으로 한다.The light-diffusion film of this invention uses the above-mentioned acrylic copolymer resin, Comprising: A base film; And a light diffusing layer formed on one or both surfaces of the base film, wherein the light diffusing layer is formed by curing the composition including the acrylic copolymer resin, the light diffusing particles, and the curing agent described above as a binder resin.
여기에서 상기 기재필름과, 광확산 입자, 경화제는 일반적인 광확산 필름에 이용되는 것으로서 선택될 수 있다. Here, the base film, the light diffusion particles, and the curing agent may be selected as those used in a general light diffusion film.
기재 필름은 일반적으로 폴리에틸렌테레프탈레이트, 폴리프로필렌, 폴리카보네이트, 폴리에틸렌등이 사용되며, 주로 폴리에틸렌테레프탈레이트를 사용할수 있다. In general, polyethylene terephthalate, polypropylene, polycarbonate, polyethylene and the like are used as the base film, and mainly polyethylene terephthalate may be used.
광확산 입자는 보통 1~30㎛입자를 사용하며 상기 바인더 수지 100 중량부에 대하여 약 2~250 중량부 포함된다. 경화제는 분자내에 여러개의 이소시아네이트기를 가지는 폴리이소시아네이트를 사용하며, 상기 바인더 수지 100 중량부에 대하여 10 ~ 60중량부 포함된다.Light diffusing particles are usually used 1 ~ 30㎛ particles and contains about 2 to 250 parts by weight based on 100 parts by weight of the binder resin. The curing agent uses a polyisocyanate having a plurality of isocyanate groups in the molecule, and includes 10 to 60 parts by weight based on 100 parts by weight of the binder resin.
또, 필요에 따라서는 대전 방지 특성을 부여하기 위하여 상기 광확산층에 대전방지제를 더 포함할 수 있다. 일반적으로 대전방지제는 4차아민계, 양이온계, 음이온계 등이 사용되며, 상기 바인더 수지 100 중량부에 대하여 10 중량부 이하로 사용하는 것이 좋다.In addition, if necessary, an antistatic agent may be further included in the light diffusion layer to impart antistatic properties. Generally, antistatic agents include quaternary amines, cationics, anionics, and the like, and are preferably used in an amount of 10 parts by weight or less based on 100 parts by weight of the binder resin.
이하, 본 발명을 실시예를 통하여 보다 상세히 설명하나, 본 발명의 범위가 하기 실시예로 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited to the following Examples.
<실시예 1><Example 1>
메틸메타아크릴레이트 100중량부, 부틸아크릴레이트 17중량부, 에틸헥실아크릴레이트 50중량부, 2-하이드록시에틸아크릴레이트 3중량부, 아크릴산 1중량부, BPO(Benzoyl peroxide) 2중량부를 교반장치, 질소투입관, 온도계, 적하장치(단량체 혼합조, 촉매 혼합조), 환류 냉각기가 부착된 반응기에 투입하고 톨루엔을 이용하여 반응 고형분이 40%가 되도록 하여 반응온도 75℃로 용액중합시킨다.100 parts by weight of methyl methacrylate, 17 parts by weight of butyl acrylate, 50 parts by weight of ethylhexyl acrylate, 3 parts by weight of 2-hydroxyethyl acrylate, 1 part by weight of acrylic acid, 2 parts by weight of BPO (Benzoyl peroxide), It is charged to a reactor equipped with a nitrogen input tube, a thermometer, a dropping device (monomer mixing tank, a catalyst mixing tank) and a reflux condenser, and the solution is polymerized at a reaction temperature of 75 ° C. using toluene so that the reaction solid content is 40%.
반응이 완료되면 불휘발분(NVM) 40%, 62호 스핀들을 사용하여 30rpm에서 측정한 브룩필드(Brookfield) 점도가 200cps인 점성용액의 아크릴 수지가 생성된다.Upon completion of the reaction, a viscous solution with a Brookfield viscosity of 200 cps, measured at 30 rpm using a 40% non-volatile content (NVM), No. 62 spindle, was produced.
<실시예 2><Example 2>
메틸메타아크릴레이트 100중량부, 부틸아크릴레이트 20중량부, 로릴메타아크릴레이트 40중량부, 2-하이드록시에틸아크릴레이트 2중량부, 아크릴산 1.5중량부, BPO(Benzoyl peroxide) 2중량부를 상기 실시예 1과 같은 방법으로 용액중합시키고, 점도를 측정하면, 210cps인 점성용액의 아크릴 수지가 생성된다.100 parts by weight of methyl methacrylate, 20 parts by weight of butyl acrylate, 40 parts by weight of lauryl methacrylate, 2 parts by weight of 2-hydroxyethyl acrylate, 1.5 parts by weight of acrylic acid, 2 parts by weight of benzoyl peroxide (BPO) When solution polymerization was carried out in the same manner as in 1 and the viscosity was measured, an acrylic resin of a viscous solution of 210 cps was formed.
<실시예 3><Example 3>
메틸메타아크릴레이트 100중량부, 부틸아크릴레이트 15중량부, 2-메톡시에틸아크릴레이트 55중량부, 2-하이드록시에틸아크릴레이트 2.5중량부, 아크릴산 1중량부, BPO(Benzoyl peroxide) 2중량부를 상기 실시예 1과 같은 방법으로 용액중합시키고, 점도를 측정하면, 220cps인 점성용액의 아크릴 수지가 생성된다.100 parts by weight of methyl methacrylate, 15 parts by weight of butyl acrylate, 55 parts by weight of 2-methoxyethyl acrylate, 2.5 parts by weight of 2-hydroxyethyl acrylate, 1 part by weight of acrylic acid, 2 parts by weight of BPO (Benzoyl peroxide) When the solution is polymerized in the same manner as in Example 1 and the viscosity is measured, an acrylic resin of a viscous solution of 220 cps is produced.
<실시예 4><Example 4>
메틸메타아크릴레이트 100중량부, 부틸아크릴레이트 15중량부, 3-에톡시프로필아크릴레이트 50중량부, 2-하이드록시에틸아크릴레이트 2.5중량부, 아크릴산 1.5중량부, BPO(Benzoyl peroxide) 2중량부를 상기 실시예 1과 같은 방법으로 용액중합시키고, 점도를 측정하면, 210cps인 점성용액의 아크릴 수지가 생성된다.100 parts by weight of methyl methacrylate, 15 parts by weight of butyl acrylate, 50 parts by weight of 3-ethoxypropyl acrylate, 2.5 parts by weight of 2-hydroxyethyl acrylate, 1.5 parts by weight of acrylic acid, 2 parts by weight of benzoyl peroxide (BPO) When the solution is polymerized in the same manner as in Example 1 and the viscosity is measured, an acrylic resin of a viscous solution of 210 cps is produced.
<비교예 1>Comparative Example 1
메틸메타아크릴레이트 100중량부, 부틸아크릴레이트 10중량부, 3-에톡시프로필아크릴레이트 10중량부, 2-하이드록시에틸아크릴레이트 20중량부, 아크릴산 13중량부, BPO(Benzoyl peroxide) 2중량부를 상기 실시예 1과 같은 방법으로 용액중합시키고, 점도를 측정하면, 200cps인 점성용액의 아크릴 수지가 생성된다.100 parts by weight of methyl methacrylate, 10 parts by weight of butyl acrylate, 10 parts by weight of 3-ethoxypropyl acrylate, 20 parts by weight of 2-hydroxyethyl acrylate, 13 parts by weight of acrylic acid, 2 parts by weight of BPO (Benzoyl peroxide) When the solution is polymerized in the same manner as in Example 1 and the viscosity is measured, an acrylic resin of a viscous solution of 200 cps is produced.
<비교예 2>Comparative Example 2
메틸메타아크릴레이트 100중량부, 부틸아크릴레이트 10중량부, 로릴메타아크릴레이트 20중량부, 2-하이드록시에틸아크릴레이트 2중량부, 아크릴산 1.5중량부, BPO(Benzoyl peroxide) 2중량부를 상기 실시예 1과 같은 방법으로 용액중합시키고, 점도를 측정하면, 210cps인 점성용액의 아크릴 수지가 생성된다.100 parts by weight of methyl methacrylate, 10 parts by weight of butyl acrylate, 20 parts by weight of lauryl methacrylate, 2 parts by weight of 2-hydroxyethyl acrylate, 1.5 parts by weight of acrylic acid, 2 parts by weight of BPO (Benzoyl peroxide) When solution polymerization was carried out in the same manner as in 1 and the viscosity was measured, an acrylic resin of a viscous solution of 210 cps was formed.
<비교예 3>Comparative Example 3
메틸메타아크릴레이트 100중량부, 부틸아크릴레이트 20중량부, 2-메톡시에틸아크릴레이트 15중량부, 2-하이드록시에틸아크릴레이트 2.5중량부, BPO(Benzoyl peroxide) 2중량부를 상기 실시예 1과 같은 방법으로 용액중합시키고, 점도를 측정하면, 200cps인 점성용액의 아크릴 수지가 생성된다.100 parts by weight of methyl methacrylate, 20 parts by weight of butyl acrylate, 15 parts by weight of 2-methoxyethyl acrylate, 2.5 parts by weight of 2-hydroxyethyl acrylate, and 2 parts by weight of benzoyl peroxide (BPO) When solution polymerization is carried out in the same manner and the viscosity is measured, an acrylic resin of a viscous solution of 200 cps is produced.
상기와 같이 제조된 아크릴 수지의 유리전이온도와, 상기 아크릴 수지를 이용하여 제조한 광확산 필름의 휘도 및 부착력을 하기와 같이 측정하였으며, 그 결과는 표 1과 같다.The glass transition temperature of the acrylic resin prepared as described above, and the brightness and adhesion of the light diffusion film prepared using the acrylic resin were measured as follows, and the results are shown in Table 1.
(1) 유리전이온도 측정(1) glass transition temperature measurement
PERKIN ELMER DSC를 이용하여 상기 실시예 및 비교예에서 제조된 아크릴 수지 7~10㎎을 취하여 측정용 cell을 만든 후, 온도구간을 -50~200℃로 하고 온도상승률을 10℃/min 으로 하여 가열/냉각/가열 과정을 수행하여 2차 가열 곡선상에 나타난 값을 유리전이온도(Tg)로 정하였다.Using PERKIN ELMER DSC, 7-10 mg of the acrylic resin prepared in Examples and Comparative Examples was used to make a measurement cell, and the temperature range was -50 to 200 ° C. and the temperature rise was 10 ° C./min. The cooling / heating process was performed to determine the value shown on the secondary heating curve as the glass transition temperature (Tg).
(2) 휘도 및 부착력 측정(2) Measurement of brightness and adhesion
상기 실시예 및 비교예에서 제조된 아크릴 수지 100중량부와, 경화제로 DN950(애경화학,이소시아네이트기 함량 12~13%) 10중량부, 대전방지제로 Cyastat609(Cytec사) 5중량부, 평균입경 10㎛의 폴리메틸메타아크릴레이크 입자 MH10F(코오롱 입자) 200중량부, 메틸에틸케톤 150중량부를 혼합하여 링밀링기를 사용하여 회전수 2000rpm으로 1시간 분산시킨 후, 이를 188㎛의 초투명 폴리에틸렌테레프탈레이트 필름의 한면에 콤마 나이프를 사용하여 25㎛ 두께로 도포하고 100℃에서 2분간 건조하여 광확산 필름을 형성하였다.100 parts by weight of the acrylic resin prepared in Examples and Comparative Examples, 10 parts by weight of DN950 (Aekyung Chemical, isocyanate group content 12-13%) as a curing agent, 5 parts by weight of Cyastat609 (Cytec) as an antistatic agent, average particle size 10 After mixing 200 parts by weight of the polymethyl methacrylate acrylate particles MH10F (Kolon particles) and 150 parts by weight of methyl ethyl ketone were dispersed for 1 hour at a rotational speed of 2000rpm using a ring milling machine, it was a super-transparent polyethylene terephthalate film of 188㎛ A coma knife was applied to one side of a 25 μm thick layer and dried at 100 ° C. for 2 minutes to form a light diffusing film.
a) 휘도 측정a) luminance measurement
광확산필름을 백라이트유니트에 장착할 수 있도록 17인치로 컷팅한 후 백라이트유니트 도광판 위에 장착하여 TOPCON사의 BM7 휘도측정기로 휘도를 평가하되, 각각을 9번 평가하여 평균을 구하여 광확산 필름의 휘도값으로 정하였다. Cut the light diffusing film into 17 inches so that it can be mounted on the backlight unit, and then mount it on the backlight unit light guide plate to evaluate the brightness with TOPCON's BM7 luminance meter. Decided.
b) 부착력 측정b) adhesion
1㎜ 간격으로 긁힘 방지용 보호층을 코로스-해치(cross-hatch)하여 100개의 1㎜ × 1㎜의 격자를 만든 후, 점착테이프(3M, 스카치 매직테이프 Cat No:122A)를 격자에 부착시켰다가 박리하여 점착테이프에 부착되어 박리되지 않고 남아있는 격자의 개수를 세어, 50개 미만 남아있는 것을 ×(불량), 50~89개 남아있는 것을 △(보통), 90~99개 남아있는 것을 ○(양호), 박리되지 않고 모두 남아있는 것을 ◎(우수)로 나타내었다.After cross-hatching the scratch protection layer at 1 mm intervals to form 100 1 mm x 1 mm grids, adhesive tape (3M, Scotch Magic Tape Cat No: 122A) was attached to the grid. Peel off and stick to the adhesive tape and count the number of remaining grids that do not peel off.Remain less than 50 × (defective), 50 ~ 89 remaining △ (normal), 90 ~ 99 remaining ○ ( Good) and all that remain without peeling are indicated by ◎ (excellent).
상기 측정결과, 본 발명의 실시예에 따라 제조된 아크릴 공중합 수지의 유리전이온도가 상온과 유사하며, 상기 아크릴 수지를 사용하여 제조된 광확산 필름의 휘도가 높았으며, 부착력 역시 매우 우수함을 볼 수 있다.As a result of the measurement, the glass transition temperature of the acrylic copolymer resin prepared according to the embodiment of the present invention is similar to room temperature, the brightness of the light diffusion film prepared using the acrylic resin was high, the adhesion is also very excellent. have.
본 발명은 유리전이온도가 상온과 유사하여 광확산 필름에 적용시 어느 정도의 점성을 가짐으로서, 광확산 필름에 적용시 기재필름과의 부착력이 우수하고, 광 확산 입자의 분산성을 좋게 하고, 광확산 입자의 박리, 탈리 현상을 방지할 수 있고, 또한, 휘도 특성이 우수한 광확산 필름을 제조할 수 있는 아크릴 공중합 수지를 제공하였으며, 또한, 이를 이용한 상술한 특성이 우수한 광확산 필름을 제공하였다. The present invention has a certain viscosity when the glass transition temperature is similar to the room temperature, when applied to the light diffusion film, excellent adhesion to the base film when applied to the light diffusion film, good dispersion of light diffusion particles, The present invention provides an acrylic copolymer resin capable of preventing peeling and desorption of light-diffusing particles and producing a light-diffusion film having excellent luminance characteristics, and also providing a light-diffusion film having excellent characteristics as described above. .
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050025599A KR100654749B1 (en) | 2005-03-28 | 2005-03-28 | Acrylic copolymer resin and light-diffusion film using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050025599A KR100654749B1 (en) | 2005-03-28 | 2005-03-28 | Acrylic copolymer resin and light-diffusion film using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20060103726A KR20060103726A (en) | 2006-10-04 |
| KR100654749B1 true KR100654749B1 (en) | 2006-12-08 |
Family
ID=37623602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020050025599A KR100654749B1 (en) | 2005-03-28 | 2005-03-28 | Acrylic copolymer resin and light-diffusion film using the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100654749B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950007644B1 (en) * | 1992-12-31 | 1995-07-13 | 제일합섬주식회사 | Method of preparing film for electronic photograph |
| KR19990054803A (en) * | 1997-12-26 | 1999-07-15 | 장용균 | Overhead projection film for electrophotographic copying and manufacturing method thereof |
| KR20030043073A (en) * | 2001-11-26 | 2003-06-02 | 건설화학공업(주) | Composition of paint bying waterborne acrylic resin for cast and method for preparing the same |
-
2005
- 2005-03-28 KR KR1020050025599A patent/KR100654749B1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950007644B1 (en) * | 1992-12-31 | 1995-07-13 | 제일합섬주식회사 | Method of preparing film for electronic photograph |
| KR19990054803A (en) * | 1997-12-26 | 1999-07-15 | 장용균 | Overhead projection film for electrophotographic copying and manufacturing method thereof |
| KR20030043073A (en) * | 2001-11-26 | 2003-06-02 | 건설화학공업(주) | Composition of paint bying waterborne acrylic resin for cast and method for preparing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060103726A (en) | 2006-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101302783B1 (en) | Method for preparing backlight unit | |
| CN103298898B (en) | Contact adhesive composition | |
| US7911722B2 (en) | Composition for forming prism layer and prism film manufactured using the same | |
| JP5175222B2 (en) | Light collimating film | |
| KR101374374B1 (en) | Adhesive Composition, Adhesive Film Comprising the Same, Method for Preparing the Adhesive Film and Display Member Using the Same | |
| KR101757962B1 (en) | Pressure sensitive adhsive composition | |
| KR101066635B1 (en) | Optical sheets | |
| KR102404488B1 (en) | Curable composition, cured product thereof, and optical member | |
| WO2020095566A1 (en) | Coating material for formation of light-diffusing layer, film for projection screen, and projection screen | |
| CN106164194A (en) | Adhesive phase and the anti-bonding sheet that disperses | |
| JP2009108122A (en) | Optical pressure-sensitive adhesive composition and optical functional film | |
| KR101587351B1 (en) | Light-scattering adhesive film, polarizing plate and liquid crystal display device | |
| KR101379151B1 (en) | Backlight unit | |
| KR101534376B1 (en) | Optical sheet | |
| JP2020186330A (en) | Adhesive sheet and laminate | |
| KR100654749B1 (en) | Acrylic copolymer resin and light-diffusion film using the same | |
| KR20190062267A (en) | Visibility improvement film for display panel and display device comprising the same | |
| KR101727403B1 (en) | Curable composition | |
| KR101493445B1 (en) | Prism sheet comprising prism layer having self-adhesive property | |
| JP2023068645A (en) | Pressure-sensitive adhesive film and organic electronic device including the same | |
| JP2023017753A (en) | Adhesive film, optical member comprising the same and optical display device comprising the same | |
| KR101773655B1 (en) | Curable composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| LAPS | Lapse due to unpaid annual fee |