KR100229266B1 - Light Diffusion Acrylic Resin Compositions and Products thereof - Google Patents
Light Diffusion Acrylic Resin Compositions and Products thereof Download PDFInfo
- Publication number
- KR100229266B1 KR100229266B1 KR1019960064954A KR19960064954A KR100229266B1 KR 100229266 B1 KR100229266 B1 KR 100229266B1 KR 1019960064954 A KR1019960064954 A KR 1019960064954A KR 19960064954 A KR19960064954 A KR 19960064954A KR 100229266 B1 KR100229266 B1 KR 100229266B1
- Authority
- KR
- South Korea
- Prior art keywords
- acrylic resin
- weight
- parts
- light
- resin composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or 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 of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
-
- 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
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
본 발명은 광확산성 아크릴 수지 조성물 및 이의 제품에 관한 것으로, 좀 더 상세하게는 광확산성 아크릴 수지 조성물에 있어서, 폴리메틸메타아크릴레이트 또는 아크릴수지 100중량부, 스티렌 모노머로 부터 현탁 중합된 가교구조를 갖는 비드상 스티렌 수지 1∼10중량부 및 이산화티탄 0.01∼0.4중량부로 필수적으로 이루어진 광확산성 아크릴 수지 조성물 및 이의 제품에 관한 것이다. 본 발명에 따른 조성물은 종래의 조성물과 비교하여 높은 광선 투과율과 균일하고 우수한 광확산성을 나타낸다.The present invention relates to a light diffusing acrylic resin composition and a product thereof, and more particularly, to a light diffusing acrylic resin composition, 100 parts by weight of polymethyl methacrylate or acrylic resin and crosslinked suspension polymerized from styrene monomer. The present invention relates to a light-diffusing acrylic resin composition and products thereof consisting essentially of 1 to 10 parts by weight of a bead-like styrene resin having a structure and 0.01 to 0.4 parts by weight of titanium dioxide. The composition according to the invention exhibits high light transmittance and uniform and excellent light diffusivity compared to conventional compositions.
Description
본 발명은 광확산성 아크릴 수지 조성물 및 이의 제품에 관한 것으로, 좀 더 상세하게는 높은 광확산성과 광투과율을 가지며, 은은한 질감의 무광 효과를 나타내는 광확산성 아크릴 수지 조성물 및 이의 제품에 관한 것이다.The present invention relates to a light diffusing acrylic resin composition and a product thereof, and more particularly, to a light diffusing acrylic resin composition having a high light diffusivity and a light transmittance and exhibiting a matte effect of a soft texture.
일반적으로 광확산성 아크릴 수지 제품(성형품)은 간판, 조명기기 또는 방향지시등의 보호 카바, 액정용 확산판 및 표시 판넬과 같은 광확 용도로 사용된다. 기존에 아크릴 수지 조성물에 광확산성을 부여하는 수단으로서는 기재인 아크릴 수지에 유리섬유, 유산바륨, 이산화티탄, 탄산칼슘, 또는 탈크 등과 같은 무기 충진물을 분산시키든지 또는 엠보싱롤에 의한 아크릴 표면에 기계적인 엠보스 형상을 부여하는 방법이 일반적이다. 또한, 무광효과를 부여하는 방법으로도 20㎛ 이상의 입자크기를 갖는 무기 충진물을 첨가하든지 기계적으로 엠보싱롤에 의한 방법이 사용되어 왔다.Generally, a light diffusing acrylic resin product (molded product) is used for light diffusing applications such as a protective cover of a signboard, a lighting device or a direction indicator, a diffusion plate for liquid crystal, and a display panel. Conventionally, as a means for imparting light diffusivity to an acrylic resin composition, an inorganic filler such as glass fiber, barium lactate, titanium dioxide, calcium carbonate, or talc is dispersed in an acrylic resin, which is a substrate, or a machine is formed on an acrylic surface by embossing rolls. The method of giving an embossing shape is common. In addition, as a method of imparting a matting effect, an inorganic filler having a particle size of 20 µm or more has been added, or a method by embossing rolls has been used mechanically.
그러나, 아크릴 수지에 무기 충진물을 첨가하는 경우에는 일반적으로 광선 투과율이 현저히 저하되는 단점이 있고, 기계적 요철을 이용한 기계적 엠보싱 방법의 경우에는 조명 카바와 같은 각종 형상으로 블로우(Blow)나 진공성형할 경우 엠보싱이 소멸되어 광확산성이 저하되고 무광효과도 소멸되는 문제가 있었다. 또한 무광 효과를 내기 위해 사용된 무기 충진물은 광택을 감소시키는 효과가 적을 뿐만 아니라 제품의 표면을 거칠게 하고 장기 사용할 경우 가공기의 스크류의 마모를 발생시켜 기기의 수명을 단축시키는 문제점이 있었다.However, the addition of an inorganic filler to the acrylic resin generally has a disadvantage in that the light transmittance is considerably lowered. In the case of a mechanical embossing method using mechanical irregularities, blow or vacuum molding into various shapes such as an illumination cover There was a problem that the embossing is extinguished so that the light diffusivity is reduced and the matt effect is also extinguished. In addition, the inorganic fillers used to produce the matte effect is not only less effective in reducing the gloss, but also has a problem of shortening the surface of the product and shortening the life of the device by causing the wear of the screw of the machine when used for a long time.
이러한 문제점을 해결하기 위하여 본 발명에서는 광투과성과 광확산성을 높이고 무광효과를 나타내기 위한 광확산제로서 광투과가 안되는 무기 충진물 대신에 광투과성이 높은 유기 가교 투명 고분자 물질을 사용하는 것이 바람직하다고 판단하였고, 본 발명은 이에 기초하여 완성되었다.In order to solve this problem, in the present invention, it is preferable to use an organic crosslinked transparent polymer material having high light transmittance instead of an inorganic filler that does not transmit light as a light diffusing agent for improving light transmittance and light diffusivity and exhibiting a matt effect. Judgment was made and the present invention was completed based on this.
따라서, 본 발명의 목적은 아크릴 수지 조성물의 2차 가공 후에도 광확산성의 손실이 없고 광투과성이 양호하며 무광효과를 보유한 광확산성 아크릴 수지 조성물을 제공하는데 있다.Accordingly, an object of the present invention is to provide a light diffusing acrylic resin composition having no loss of light diffusivity even after secondary processing of the acrylic resin composition, having good light transmittance, and having a matt effect.
본 발명의 다른 목적은 상기 조성물을 이용하여 제조된 광확산성 쉬트를 제공하는데 있다.Another object of the present invention to provide a light diffusing sheet prepared using the composition.
상기 목적을 달성하기 위한 본 발명의 조성물은 광확산성 아크릴 수지 조성물에 있어서, 폴리메틸메타아크릴레이트(PMMA) 또는 아크릴수지 100중량부, 스티렌 모노머로 부터 현탁 중합된 가교구조를 갖는 비드상 스티렌 수지 1∼10중량부 및 이산화티탄 0.01∼0.4중량부로 필수적으로 이루어진다.The composition of the present invention for achieving the above object is a bead-like styrene resin having a crosslinked structure suspended in a light diffusion acrylic resin composition, 100 parts by weight of polymethyl methacrylate (PMMA) or acrylic resin, styrene monomer It consists essentially of 1 to 10 parts by weight and 0.01 to 0.4 parts by weight of titanium dioxide.
도 1은 종래의 광확산성 아크릴 수지 조성물을 이용하여 제조된 평판 쉬트 표면의 전자현미경사진이고,1 is an electron micrograph of the surface of a flat sheet prepared using a conventional light diffusing acrylic resin composition,
도 2는 본 발명에 따른 광확산성 아크릴 수지 조성물을 이용하여 제조된 평판 쉬트 표면의 전자현미경사진이다.Figure 2 is an electron micrograph of the surface of a flat sheet prepared using a light diffusing acrylic resin composition according to the present invention.
이하 첨부된 도면을 참조하여 본 발명을 좀 더 구체적으로 살펴보면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
본 발명에서는 광투과성과 광확산성을 높이고 무광효과를 나타내기 위해서 광확산제로서 기존에 사용된 광투과가 안되는 무기충진물 대신에 광투과성이 높은 유기 가교 투명 고분자물질을 사용하였다. 본 발명에 사용된 광확산제는 투명한 물질로서 광투과성을 높이고, 기재인 PMMA 또는 아크릴수지와의 굴절율 차이에 의해서 광확산성을 높이는 역할을 한다. 또한 가교입자가 탄성체의 성질을 보유하므로 2차 성형후에도 제품표면에 미세한 엠보스를 유지하게 된다. 도 1은 종래의 광확산성 아크릴 수지 조성물을 이용하여 제조된 평판 쉬트 표면의 전자현미경사진이고, 도 2는 본 발명에 따른 광확산성 아크릴 수지 조성물을 이용하여 제조된 평판 쉬트 표면의 전자현미경사진이다.In the present invention, in order to increase light transmittance and light diffusivity and exhibit a matting effect, an organic light-crosslinked transparent polymer material having a high light transmittance was used as a light diffusing agent instead of a non-transparent inorganic filler. The light diffusing agent used in the present invention improves light transmittance as a transparent material and increases light diffusivity by a difference in refractive index with PMMA or acrylic resin, which is a substrate. In addition, since the crosslinked particles retain the properties of the elastomer, fine embossing is maintained on the surface of the product even after the secondary molding. 1 is an electron micrograph of the surface of a flat sheet prepared using a conventional light diffusing acrylic resin composition, Figure 2 is an electron micrograph of the surface of a flat sheet prepared using a light diffusing acrylic resin composition according to the present invention to be.
도 1 및 2로 부터 알 수 있는 바와 같이, 기존의 광확산성 아크릴수지의 제품표면은 엠보스가 나타나지 않으며, 도 1에서 흰점으로 보이는 것은 첨가된 필러인 반면에, 본 발명에 따른 광확산성 아크릴수지의 제품표면은 엠보스(도 2참조)를 유지하게 된다. 이러한 제품표면의 엠보스는 빛의 난반사를 일으켜 무광효과를 나타나게 된다.As can be seen from Figures 1 and 2, the product surface of the conventional light-diffusing acrylic resin does not appear embossing, while the visible white point in Figure 1 is an added filler, while the light-diffusing acrylic according to the present invention The product surface of the resin retains the emboss (see Fig. 2). The embossing on the surface of the product causes the diffuse reflection of the light and shows a matte effect.
본 발명에 사용된 광확산제는 스티렌 모노머로부터 현탁 중합된 가교 구조를 갖는 1∼20㎛ 입자 크기의 비드상 스티렌 수지이다. 상기 스티렌 수지는 페인트나 잉크에 첨가되어 부드러운 감을 향상시키는 첨가제, 필름용 차단 방지제, 화장품용 충진제, 또는 의치와 같은 치과용 재료 등으로 사용되어 왔으나, 본 발명과 같이 광확산제로 사용된 예는 없었다. 상기 비드상 가교 스티렌 수지는 1) 스티렌 단량체 또는 이를 포함하는 다른 공중합 단량체 100중량부에 대하여 2) 가교제 20∼50중량부, 및 3) 중합촉매 0.01∼1중량부를 사용하여 현탁중합에 의해 제조된다. 상기 스티렌 단량체와의 공중합 단량체로서는 α-메틸스티렌, 아크릴로니트릴 또는 메틸메타아크릴레이트 등이 사용된다. 상기 가교제로서는 에틸렌글리콜 디메틸아크릴레이트 또는 트리메틸롤프로판 트리메타크릴레이트 등이 사용된다. 상기 트리메틸롤프로판 트리메타크릴레이트의 구조는 하기 화학식 Ⅰ로 표시된다.The light diffusing agent used in the present invention is a bead styrene resin having a particle size of 1 to 20 µm having a crosslinked structure suspended from styrene monomer. The styrene resin has been used as an additive to enhance the soft feeling by adding to a paint or ink, an anti-blocking agent for a film, a filler for cosmetics, or a dental material such as a denture, but has not been used as a light diffusing agent as in the present invention. . The bead-shaped crosslinked styrene resin is prepared by suspension polymerization using 1) 20 to 50 parts by weight of a crosslinking agent and 3) 0.01 to 1 part by weight of a polymerization catalyst based on 100 parts by weight of a styrene monomer or another copolymerizing monomer including the same. . (Alpha) -methylstyrene, acrylonitrile, methyl methacrylate, etc. are used as a copolymerization monomer with the said styrene monomer. Ethylene glycol dimethyl acrylate, trimethylolpropane trimethacrylate, etc. are used as said crosslinking agent. The structure of the trimethylolpropane trimethacrylate is represented by the following formula (I).
[화학식 Ⅰ][Formula I]
상기 중합촉매로는 벤조일퍼옥사이드, tert-부틸퍼벤조에이트 등의 유기과산화물이나 아조비스이소부티로니트릴의 아조화합물이 사용된다.As said polymerization catalyst, organic peroxides, such as benzoyl peroxide and tert- butyl perbenzoate, and the azo compound of azobisisobutyronitrile are used.
본 발명에 광확산제로 사용되는 상기 스티렌수지는 PMMA 또는 아크릴수지 100중량부에 대하여 1∼10중량부, 바람직하게는 2∼6중량부로 첨가되는데, 이때 1중량부 미만이면 충분한 광확산 효과를 얻을 수 없고, 10중량부를 초과하면 빛이 투과되지 못하여 광투과도가 떨어지며 경제성도 낮아진다. 또한, 상기 스티렌수지는 비드 형태로 사용되며, 입자크기는 1∼20㎛가 바람직하다. 입자크기가 1㎛ 미만이면 빛이 굴절되지 않고 그대로 통과되어 광확산 효과가 적으며, 20㎛를 초과하면 표면이 매끄럽지 못한 단점이 있다.The styrene resin used as the light diffusing agent in the present invention is added in an amount of 1 to 10 parts by weight, preferably 2 to 6 parts by weight, based on 100 parts by weight of PMMA or acrylic resin, and if it is less than 1 part by weight, sufficient light diffusion effect is obtained. If it exceeds 10 parts by weight, light cannot be transmitted, resulting in poor light transmittance and low economic efficiency. In addition, the styrene resin is used in the form of beads, the particle size is preferably 1 ~ 20㎛. If the particle size is less than 1㎛ light is not refracted as it passes through the light diffusion effect is less, if it exceeds 20㎛ there is a disadvantage that the surface is not smooth.
본 발명의 조성물은 상기 성분외에 이산화티탄 0.01∼0.4중량부를 더욱 포함한다. 상기 이산화티탄은 최종 제품에 백색도를 향상시킬 목적으로 첨가되며, 0.01중량부 미만이면 백색도의 향상이 거의 없으며, 0.4중량부를 초과하면 빛이 통과되지 못하여 광투과도가 현저히 떨어지는 담점이 있다.The composition of the present invention further comprises 0.01 to 0.4 parts by weight of titanium dioxide in addition to the above components. The titanium dioxide is added to the final product for the purpose of improving the whiteness, there is little improvement of the whiteness if less than 0.01 parts by weight, if it exceeds 0.4 parts by weight there is a point that the light transmittance is significantly lowered because light is not passed.
상기 성분들은 통상의 방법으로 압출기에서 용융 혼련시켜 서로 균일하게 분산시키고, 분산된 용융물을 대기하에서 자연 냉각시켜 펠렛화하여 최종 제품을 제조한다.The components are melt kneaded in an extruder in a conventional manner to uniformly disperse each other, and the dispersed melt is naturally cooled in air and pelletized to prepare a final product.
이하 실시예 및 비교예를 통하여 본 발명을 좀 더 구체적으로 살펴보지만, 하기 예에 본 발명의 범주가 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the scope of the present invention is not limited to the following Examples.
실시예 1Example 1
PMMA 수지(한화종합화학(주) 제조, 상품명: HY-020) 100중량부에 평균 입경이 8㎛인 가교 스티렌 수지(SEKISUI(주), 상품명: SBX-8) 5중량부 및 이산화티탄 0.1중량부의 비율로 각각의 정량 공급 장치를 통하여 벤트식 Leistrizer 27 이축 압출기의 원료 투입부에 공급시켰다. 투입된 원료는 이축 압출기에서 용융 혼련되면서 서로 균일하게 분산되었다. 분산된 용융물을 대기하에서 자연 냉각시켜 펠렛화하였으며, 이것을 사출 성형기로 가로와 세로가 각각 10㎝, 두께 2㎜인 평판 시트로 제조하였다. 상기 시트의 전광선 투과율, 확산 광선 투과율, 흐림도 및 광택도와 같은 물성치를 측정하여 하기 표1에 기재하였다. 전광선 투과율, 확산 광선 투과율 및 흐림도는 ASTM-D1003 방법에 의해 흐림도 측정기로 측정하였으며, 광택도는 평판의 평면에 20°및 45°의 경면광택도를 JIS Z 8741(광택도 측정방법)방법에 준하여 측정하였다.5 parts by weight of cross-linked styrene resin (SEKISUI, product name: SBX-8) and 0.1 weight of titanium dioxide having an average particle diameter of 8 µm in 100 parts by weight of PMMA resin (manufactured by Hanwha General Chemical Co., Ltd., trade name: HY-020). The feed rate of the vented Leistrizer 27 twin screw extruder was fed to each feed unit at a negative rate. The input raw materials were uniformly dispersed with each other while melt kneading in a twin screw extruder. The dispersed melt was naturally cooled in the air and pelletized, and this was made into a flat sheet having a width of 10 cm and a thickness of 2 mm, respectively, by an injection molding machine. Physical properties such as total light transmittance, diffuse light transmittance, cloudiness, and glossiness of the sheet were measured and described in Table 1 below. Total light transmittance, diffused light transmittance and haze were measured by haze meter by ASTM-D1003 method, and glossiness was measured by mirror surface gloss of 20 ° and 45 ° in the plane of flat plate by JIS Z 8741 method. It measured according to.
비교예 1Comparative Example 1
상기 실시예 1에서 가교 스티렌 수지 대신에 탄산칼슘 3중량부를 사용한 것을 제외하고는 동일하게 실시하였고, 그 물성치를 측정하여 하기 표1에 기재하였다.Except for using 3 parts by weight of calcium carbonate instead of the cross-linked styrene resin in Example 1 was carried out in the same manner, the physical properties were measured and listed in Table 1 below.
실시예 2Example 2
상기 실시예 1에서 가교 스티렌 3중량부 및 이산화티탄 0.2중량부를 사용한 것을 제외하고는 동일하게 실시하였고, 그 물성치를 측정하여 하기 표1에 기재하였다.Except that 3 parts by weight of cross-linked styrene and 0.2 parts by weight of titanium dioxide was used in Example 1, the physical properties were measured and listed in Table 1 below.
비교예 2Comparative Example 2
상기 실시예 1에서 가교 스티렌 수지 대신에 탄산칼슘 2중량부를 사용한 것을 제외하고는 동일하게 실시하였고, 그 물성치를 측정하여 하기 표1에 기재하였다.Except for using 2 parts by weight of calcium carbonate instead of the cross-linked styrene resin in Example 1, it was carried out in the same manner, the physical properties were measured and listed in Table 1 below.
[표 1]TABLE 1
상기 표1로 부터 알 수 있는 바와 같이, 본 발명에 따른 광확산제를 사용한 경우가 탄산칼슘을 사용한 경우에 비하여 전광선 투과율과 광확산성이 우수하고 무광효과가 특히 우수하게 나타나서 종래의 광확산성 쉬트에 비해서 탁월한 광학성능을 발휘함을 알 수 있었다.As can be seen from Table 1, when the light diffusing agent according to the present invention is used, the total light transmittance and the light diffusing property are excellent and the matting effect is particularly excellent as compared with the case of using the calcium carbonate. It was found that the sheet exhibits superior optical performance compared to the sheet.
기존의 광확산제인 탄산칼슘을 사용한 아크릴수지 조성물은 광투과성을 높이면 광확산성이 저하되고, 광확산성을 높이면 광투과성이 저하되는 단점이 있었으나, 본 발명에 따른 조성물은 종래의 조성물과 비교하여 높은 광선 투과율과 균일하고 우수한 광확산성을 나타낸다. 또한, 본 발명에 따른 조성물로 제조한 쉬트는 은은한 질감의 무광택 제품이었으며, 이 쉬트를 이용해서 2차 성형(진공성형)에 의해 제조된 등카바 역시 무광제품이었고, 아울러 성형기의 실린더나 스크류의 마모가 적어 가공기기의 수명을 길게 할 수 있었다.The acrylic resin composition using calcium carbonate, which is a conventional light diffusing agent, has a disadvantage in that light diffusivity decreases when light transmittance is increased, and light transmittance decreases when light diffusivity is increased, but the composition according to the present invention is compared with a conventional composition. It exhibits high light transmittance and uniform and excellent light diffusivity. In addition, the sheet prepared with the composition according to the present invention was a matte product with a soft texture, and the back cover manufactured by secondary molding (vacuum molding) using this sheet was also a matte product, and wear of the cylinder or screw of the molding machine was also performed. It was not possible to extend the life of the processing equipment.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960064954A KR100229266B1 (en) | 1996-12-12 | 1996-12-12 | Light Diffusion Acrylic Resin Compositions and Products thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960064954A KR100229266B1 (en) | 1996-12-12 | 1996-12-12 | Light Diffusion Acrylic Resin Compositions and Products thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980046594A KR19980046594A (en) | 1998-09-15 |
| KR100229266B1 true KR100229266B1 (en) | 1999-11-01 |
Family
ID=19487528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960064954A Expired - Fee Related KR100229266B1 (en) | 1996-12-12 | 1996-12-12 | Light Diffusion Acrylic Resin Compositions and Products thereof |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100229266B1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100818176B1 (en) * | 2002-12-30 | 2008-03-31 | 주식회사 코오롱 | Light Diffusion Acrylic Resin Composition |
| KR100585512B1 (en) * | 2004-07-27 | 2006-06-07 | (주)엔피케미칼 | Oil and inorganic composite spherical powder for reflective film and manufacturing method |
| KR100593470B1 (en) * | 2004-11-01 | 2006-06-28 | 제일모직주식회사 | Liquid crystal display device comprising a light diffusion plate and a light diffusion plate |
| KR100794715B1 (en) * | 2004-11-04 | 2008-01-21 | 석경도 | Lampshade |
| KR100730412B1 (en) * | 2005-12-29 | 2007-06-19 | 제일모직주식회사 | Light diffusion plate for backlight unit of liquid crystal display |
-
1996
- 1996-12-12 KR KR1019960064954A patent/KR100229266B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR19980046594A (en) | 1998-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1337104C (en) | Light-scattering thermoplastic polymers | |
| US5883607A (en) | Computers comprising scratch resistant optical films | |
| EP2029935B1 (en) | Device for signs | |
| KR100612633B1 (en) | Transparent thermoplastic composition comprising glass hollow beads | |
| CA2469043A1 (en) | Rear-projection screen and process for its production | |
| KR100229266B1 (en) | Light Diffusion Acrylic Resin Compositions and Products thereof | |
| JP2001131419A (en) | Light diffusing composition | |
| JPH03207743A (en) | Methacrylic resin molded material having excellent transmittance and diffusibility of light | |
| EP3601435A1 (en) | Light scattering polymeric composition with improved scattering efficiency and improved mechanical properties | |
| JP2512544B2 (en) | Light-diffusing synthetic resin | |
| JPH1160966A (en) | Light diffusing resin composition | |
| JP2000169722A (en) | Light diffusible thermoplastic resin composition and molded article thereof | |
| JPH0159297B2 (en) | ||
| JPH11344605A (en) | Linear type fresnel prism plate for natural lighting | |
| JPS63298201A (en) | Non-glare sheet | |
| JPH1044285A (en) | Light diffusible resin laminated plate for illumination equipment cover and the illumination equipment cover | |
| CA2059588A1 (en) | Multilayer blankout signs | |
| JPH05179054A (en) | Light-diffusing agent and resin composition containing light-diffusing agent | |
| JPH0632955A (en) | Light-diffusive methyl methacrylate/styrene copolymer resin composition | |
| JPH0632973A (en) | Light-scattering polycarbonate resin composition | |
| JP3369848B2 (en) | Polyethylene terephthalate resin sheet | |
| KR20060040148A (en) | Light Diffusion Resin Composition | |
| JPH11227115A (en) | Resin laminate with ground glass tone surface | |
| JP2000169721A (en) | Thermoplastic resin composition excellent in light diffusion property and molded article thereof | |
| KR101068635B1 (en) | High Brightness Diffusion Film with Improved Engraving Rate and Its Manufacturing Method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| PA0109 | Patent application |
St.27 status event code: A-0-1-A10-A12-nap-PA0109 |
|
| PA0201 | Request for examination |
St.27 status event code: A-1-2-D10-D11-exm-PA0201 |
|
| R17-X000 | Change to representative recorded |
St.27 status event code: A-3-3-R10-R17-oth-X000 |
|
| PG1501 | Laying open of application |
St.27 status event code: A-1-1-Q10-Q12-nap-PG1501 |
|
| E902 | Notification of reason for refusal | ||
| PE0902 | Notice of grounds for rejection |
St.27 status event code: A-1-2-D10-D21-exm-PE0902 |
|
| N231 | Notification of change of applicant | ||
| PN2301 | Change of applicant |
St.27 status event code: A-3-3-R10-R13-asn-PN2301 St.27 status event code: A-3-3-R10-R11-asn-PN2301 |
|
| R17-X000 | Change to representative recorded |
St.27 status event code: A-3-3-R10-R17-oth-X000 |
|
| T11-X000 | Administrative time limit extension requested |
St.27 status event code: U-3-3-T10-T11-oth-X000 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-3-3-R10-R13-asn-PN2301 St.27 status event code: A-3-3-R10-R11-asn-PN2301 |
|
| T11-X000 | Administrative time limit extension requested |
St.27 status event code: U-3-3-T10-T11-oth-X000 |
|
| E701 | Decision to grant or registration of patent right | ||
| PE0701 | Decision of registration |
St.27 status event code: A-1-2-D10-D22-exm-PE0701 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-3-3-R10-R18-oth-X000 |
|
| GRNT | Written decision to grant | ||
| PR0701 | Registration of establishment |
St.27 status event code: A-2-4-F10-F11-exm-PR0701 |
|
| PR1002 | Payment of registration fee |
St.27 status event code: A-2-2-U10-U11-oth-PR1002 Fee payment year number: 1 |
|
| PG1601 | Publication of registration |
St.27 status event code: A-4-4-Q10-Q13-nap-PG1601 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 4 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 5 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 6 |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-5-5-R10-R18-oth-X000 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 7 |
|
| PN2301 | Change of applicant |
St.27 status event code: A-5-5-R10-R13-asn-PN2301 St.27 status event code: A-5-5-R10-R11-asn-PN2301 |
|
| FPAY | Annual fee payment |
Payment date: 20060810 Year of fee payment: 8 |
|
| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 8 |
|
| LAPS | Lapse due to unpaid annual fee | ||
| PC1903 | Unpaid annual fee |
St.27 status event code: A-4-4-U10-U13-oth-PC1903 Not in force date: 20070817 Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE |
|
| R18-X000 | Changes to party contact information recorded |
St.27 status event code: A-5-5-R10-R18-oth-X000 |
|
| PC1903 | Unpaid annual fee |
St.27 status event code: N-4-6-H10-H13-oth-PC1903 Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE Not in force date: 20070817 |
|
| P22-X000 | Classification modified |
St.27 status event code: A-4-4-P10-P22-nap-X000 |