KR20060027527A - Anti-glare coating composition having oligomer/silica nano composite - Google Patents

Anti-glare coating composition having oligomer/silica nano composite Download PDF

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KR20060027527A
KR20060027527A KR1020040076353A KR20040076353A KR20060027527A KR 20060027527 A KR20060027527 A KR 20060027527A KR 1020040076353 A KR1020040076353 A KR 1020040076353A KR 20040076353 A KR20040076353 A KR 20040076353A KR 20060027527 A KR20060027527 A KR 20060027527A
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oligomer
silica
diffuse reflection
reflection coating
sol
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KR100625116B1 (en
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김남훈
김현
장주영
김지웅
송지혜
최성철
이상훈
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주식회사 대하맨텍
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    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract

본 발명에 따른 난반사 코팅제는, 10 내지 30 nm 크기의 실리카 입자가 분산된 실리카졸을 올리고머와 혼합하여 분산하고 여기에 응집제를 투입하여 실리카졸을 응집시킴으로서 형성되는 올리고머/실리카 나노복합체를 포함하여 이루어지는 것을 특징으로 한다. 본 발명에 의하면 종래와 같이 단순히 마이크로 크기의 실리카 입자를 분산시켜서 이루어지는 경우에 비해 빛의 투과율은 저하시키지 않으면서 난반사 특성은 우수한 막을 코팅할 수 있게 된다. 또한, 여기에 도전성 물질이나 광개시제 등을 더 포함시킴으로서 대전방지성, 광경화성의 기능이 포함되도록 할 수도 있다. 그리고, 아크릴계 유기화합물의 자외선 경화반응을 통해서 내스크래치성이 우수한 막을 얻을 수 있게 된다.  The diffuse reflection coating according to the present invention comprises an oligomer / silica nanocomposite formed by mixing and dispersing silica sol having 10 to 30 nm silica particles dispersed therein with an oligomer and agglomerating the silica sol by adding a flocculant thereto. It is characterized by. According to the present invention, it is possible to coat a film having excellent diffuse reflection characteristics without decreasing light transmittance as compared with the case of simply dispersing micro-sized silica particles as in the prior art. Further, by further including a conductive material, a photoinitiator, and the like, the antistatic and photocurable functions may be included. In addition, through the ultraviolet curing reaction of the acrylic organic compound, it is possible to obtain a film having excellent scratch resistance.

눈부심, 난반사, 올리고머, 실리카, 나노복합체, 졸, 나노Glare, diffuse reflection, oligomer, silica, nanocomposite, sol, nano

Description

올리고머/실리카 나노복합체를 포함하여 이루어지는 난반사 코팅제{Anti-glare coating composition having oligomer/silica nano composite} Anti-glare coating composition having oligomer / silica nanocomposite {Anti-glare coating composition having oligomer / silica nano composite}             

도1은 올리고머/실리카 나노복합체의 모식도를 나타낸 도면이다. 1 is a diagram showing a schematic diagram of an oligomer / silica nanocomposite.

본 발명은 난반사 코팅제에 관한 것으로서, 특히 올리고머/실리카 나노복합체를 포함하여 이루어지는 난반사 코팅제에 관한 것이다. The present invention relates to a diffuse reflection coating, and more particularly to a diffuse reflection coating comprising an oligomer / silica nanocomposites.

오늘날 고화질 영상 매체 시대를 맞이하여 PDP, LCD 등 다양한 디스플레이가 주목받고 있으며, 또한 디지털 방송에 따른 대형 TV 수요가 증가하고 있다. 이러한 멀티미디어로서의 신 시장 창출에 힘입어 PDP시장은 전 세계적으로 2005년까지 400만대 수준까지 대폭 증가할 것으로 전망된다. 이에 따라 PDP에 적용되는 부품, 재료등 관련 기술도 더불어 그 개발에 박차를 가하고 있는 실정이다. In the era of high-definition video media, various displays such as PDP and LCD are attracting attention, and the demand for large TVs due to digital broadcasting is increasing. With the creation of a new market as multimedia, the PDP market is expected to increase to 4 million units worldwide by 2005. As a result, related technologies such as parts and materials applied to the PDP are being accelerated in their development.

PDP 및 각종 디스플레이에 사용되는 필름 또는 패널은 외부에서 입사되는 빛에 의한 눈부심을 방지하는 난반사 기능과 내스크래치성을 요구할 뿐만 아니라 먼 지부착 방지를 위한 대전방지 성능도 요구되어진다. Films or panels used in PDPs and various displays not only require diffuse reflection and scratch resistance to prevent glare from light incident from the outside, but also antistatic performance to prevent dust adhesion.

현재 개발된 난반사 기술은 자외선 경화형 수지에 실리카 분산 조성물을 혼합하여 코팅하는 방법, 필름위의 표면에 요철이 있는 롤을 연속적으로 필름에 눌러주는 방법, 무기화합물의 박막코팅방법 등이 있다. The currently developed diffuse reflection technology includes a method of mixing and coating a silica dispersion composition with an ultraviolet curable resin, a method of continuously pressing a roll having irregularities on the surface of the film, and a method of coating a thin film of an inorganic compound.

종래의 눈부심방지도료는 반사되는 빛을 산란시키기 위하여, 마이크로미터 크기의 실리카 입자를 분산시켜서 만들어졌다. 그러나, 이는 실리카 입자의 크기가 크기 때문에 투과율이 떨어진다는 단점을 갖는다. Conventional anti-glare coatings are made by dispersing micrometer-sized silica particles in order to scatter reflected light. However, this has the disadvantage that the transmittance is poor because of the large size of the silica particles.

따라서, 본 발명이 이루고자 하는 기술적 과제는, 나노크기의 실리카 입자를 사용하여 빛의 투과율은 떨어지지 않으면서 난반사효과는 우수한 코팅막을 형성할 수 있는 난반사 코팅제를 제공하는 데 있다.
Therefore, the technical problem to be achieved by the present invention is to provide a diffuse reflection coating agent that can form a coating film excellent in the diffuse reflection effect without falling light transmittance using nano-sized silica particles.

상기 기술적 과제를 달성하기 위한 본 발명에 따른 난반사 코팅제는, 10 내지 30 nm 크기의 실리카 입자가 분산된 실리카졸을 올리고머와 혼합하여 분산하고 여기에 응집제를 투입하여 실리카졸을 응집시킴으로서 형성되는 올리고머/실리카 나노복합체를 포함하여 이루어지는 것을 특징으로 한다. The diffuse reflection coating agent according to the present invention for achieving the above technical problem is, oligomer / formed by agglomerating silica sol by dispersing a silica sol in which silica particles of 10 to 30 nm size is dispersed with an oligomer and agglomerates into the silica sol / It is characterized by comprising a silica nanocomposite.

상기 올리고머로는 우레탄아크릴레이트 올리고머, 폴리에스터 아크릴레이트 올리고머, 또는 에폭시 아크릴레이트 올리고머를 사용할 수 있다.   The oligomer may be a urethane acrylate oligomer, polyester acrylate oligomer, or epoxy acrylate oligomer.

상기 실리카 입자는 조성물의 고형분에서 0.1 ~ 20 wt%을 차지하는 것이 바람직하다. The silica particles preferably occupy 0.1 to 20 wt% in the solid content of the composition.

상기 난반사 코팅제는 조성물의 고형분에서 0.01 ~ 20wt% 를 차지하는 폴리치오펜계 전도성 고분자나 암모늄계 대전방지제를 더 포함할 수 있다. The diffuse reflection coating agent may further include a polythiophene-based conductive polymer or an ammonium-based antistatic agent that accounts for 0.01 to 20 wt% in the solid content of the composition.

이하에서, 본 발명의 바람직한 실시예를 첨부한 도면들을 참조하여 상세히 설명한다. 아래의 실시예는 본 발명의 내용을 이해하기 위해 제시된 것일 뿐이며 당 분야에서 통상의 지식을 가진 자라면 본 발명의 기술적 사상 내에서 많은 변형이 가능할 것이다. 따라서, 본 발명의 권리범위가 이러한 실시예에 한정되어지는 것으로 해석되어져서는 안된다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. The following examples are only presented to understand the content of the present invention, and those skilled in the art will be capable of many modifications within the technical spirit of the present invention. Accordingly, the scope of the present invention should not be construed as being limited to these embodiments.

[올리고머/실리카 유무기 복합체 제조][Oligomer / Silica Organic-Inorganic Complex]

이소프로필 알코올(IPA)에 10 내지 30 nm 크기의 실리카 입자가 분산된 실리카졸에 분산제로서 Disperbyk-111(BYK Gardner GMBH 제품)을 소량 투입한 후 고속교반기를 사용하여 2시간 이상 우레탄아크릴레이트 올리고머와 잘 혼합 분산한다. 이때 분산성이 좋지 않으면 투과율이 목표 수준에 미치지 못할 수 있으므로 가능한 충분히 분산을 행한다.  A small amount of Disperbyk-111 (by BYK Gardner GMBH) was added to a silica sol in which silica particles of 10 to 30 nm size were dispersed in isopropyl alcohol (IPA), and then a urethane acrylate oligomer was used for at least 2 hours using a high speed stirrer. Disperse well mixed. At this time, if the dispersibility is not good, the transmittance may not reach the target level, so that dispersion is performed as sufficiently as possible.

그 다음으로는 분산되어진 용액에 응집제로서 에틸렌 디아민(ethylenediamine)을 소량 투입함으로써 분산된 나노사이즈의 실리카졸이 응집을 일으키면서 실리카 표면의 친수기와 올리고머의 우레탄결합 사이에서의 수소결합에 의하여 올리고머와 실리카 입자의 유무기 복합체가 형성되도록 유도한다. 도1은 이렇게 해서 형성된 올리고머/실리카 나노 복합체의 모식도를 나타낸 것이다. Next, a small amount of ethylenediamine is added to the dispersed solution as a coagulant, and thus, the dispersed nano-sized silica sol causes agglomeration, and the oligomer and silica are formed by hydrogen bonding between the hydrophilic group on the silica surface and the urethane bond of the oligomer. Induces formation of organic-inorganic complexes of particles. Figure 1 shows a schematic diagram of the oligomer / silica nanocomposites thus formed.

나노 복합체 형성시 눈부심 방지 효과를 위하여 상기와 같이 응집제를 통한 응집과정을 거치게 되는데 이때, 응집제가 너무 많으면 복합체가 빠른 속도로 겔(gel)화되어 저장안정성이 나빠질 수 있음에 특히 주의해야 한다. When the nanocomposite is formed, the anti-glare effect is subjected to the coagulation process through the coagulant as described above. At this time, if the coagulant is too much, the complex may be gelled at a high speed, thereby deteriorating storage stability.

우레탄아크릴레이트 올리고머 대신에 폴리에스터 아크릴레이트 올리고머 또는 에폭시 아크릴레이트 올리고머를 사용할 수도 있다. 상기 실리카 입자는 전체 조성물의 고형분에서 0.1 ~ 20 wt%을 차지하는 것이 바람직하다. Instead of urethane acrylate oligomers, polyester acrylate oligomers or epoxy acrylate oligomers may be used. The silica particles preferably occupy 0.1 to 20 wt% in solids of the total composition.

[대전방지성 부여][Grant antistatic property]

상기와 같은 올리고머/실리카 유무기 복합체를 포함하여 이루어지는 난반사 코팅제에 도전성을 부여하기 위하여 도전성 물질을 첨가하면 코팅막이 대전방지기능을 포함하게 된다. 이를 위해 상기와 같은 올리고머/실리카 유무기 복합체를 포함하여 이루어지는 난반사 코팅제에 도전성 물질로서, 폴리치오펜계 전도성 고분자 용액이나 암모늄염 용액을 투입 혼합한다. 상기 폴리치오펜계 전도성 고분자나 암모늄계 대전방지제는 조성물의 고형분에서 0.01 ~ 20wt% 를 차지하는 것이 바람직하다. When the conductive material is added to impart conductivity to the diffuse reflection coating agent including the oligomer / silica organic-inorganic composite as described above, the coating film includes an antistatic function. To this end, a polythiophene-based conductive polymer solution or an ammonium salt solution is added and mixed as a conductive material to the diffuse reflection coating agent including the oligomer / silica organic-inorganic composite as described above. The polythiophene-based conductive polymer or ammonium-based antistatic agent preferably accounts for 0.01 to 20 wt% in the solid content of the composition.

표1은 조성물(표의 상단)대로 혼합하여 대전방지성 난반사 코팅제를 만든 다음에 이를 바코터로 PET 필름에 코팅하여 자외선 경화하여 형성된 코팅막의 물성치를 나타낸 것이다(하단). Table 1 shows the physical properties of the coating film formed by mixing according to the composition (top of the table) to form an antistatic diffuse reflection coating and then coating it on a PET film with a bar coater (UV curing) (bottom).

함량(PHR) Content (PHR) 비고Remarks 우레탄아크릴레이트Urethane Acrylate 4040 올리고머Oligomer TMPTATMPTA 2020 모노머Monomer TPGDATPGDA 2020 모노머Monomer HDDAHDDA 1414 모노머Monomer 광개시제Photoinitiator 55 하이드록시 사이클로헥실 페닐케톤(1-hydroxycyclohexylphenylketone)1-hydroxycyclohexylphenylketone 첨가제additive 1One BYK-300 (BYK Gardner GMBH 제품)BYK-300 (by BYK Gardner GMBH) Silica solSilica sol 55 30 nm30 nm 분산제Dispersant 0.20.2 Disperbyk-111 (BYK Gardner GMBH 제품)Disperbyk-111 (by BYK Gardner GMBH) 응집제Flocculant 0.20.2 에틸렌 디아민Ethylene diamine 대전방지제Antistatic agent 55 폴리피치온계 전도성 고분자 용액Polypionionic Conductive Polymer Solution 희석제diluent 2020 IPAIPA TotalTotal 130.4130.4 표면경도Surface hardness 3H3H JIS K5401JIS K5401 광투과율Light transmittance 8484 KS M ISO 13468-1KS M ISO 13468-1 광택도Glossiness 5858 ASTM D523ASTM D523 HazeHaze 77 KS M ISO 13468-1KS M ISO 13468-1 표면저항Surface resistance 2.0ㅧ1011 2.0 ㅧ 10 11 ASTM D257ASTM D257 부착성Adhesion 100/100100/100 KS M 5981KS M 5981 내용제성Solvent resistance 양호Good KS M 5971KS M 5971

본 발명에 따른 난반사 코팅제는 나노크기의 실리카졸을 사용하여 이를 올리고머에 혼합하여 분산시키고 다시 응집제를 사용하여 적절하게 응집시킴으로서 얻어지는 나노복합체를 포함하기 때문에, 종래와 같이 단순히 마이크로 크기의 실리카 입자를 분산시켜서 이루어지는 경우에 비해 빛의 투과율은 저하시키지 않으면서 난반사 특성은 우수한 막을 코팅할 수 있게 된다. 또한, 여기에 도전성 물질이나 광개시제 등을 더 포함시킴으로서 대전방지성, 광경화성의 기능이 포함되도록 할 수도 있다. 그리고, 아크릴계 유기화합물의 자외선 경화반응을 통해서 내스크래치 성이 우수한 막을 얻을 수 있게 된다.


Since the diffuse reflection coating according to the present invention comprises a nanocomposite obtained by mixing and dispersing it in an oligomer using a nano-sized silica sol and then agglomerating properly using a flocculant, it is simply dispersing micro-sized silica particles as in the prior art. Compared to the case made by making the light transmittance can be coated excellent film without diffuse reflection characteristics. Further, by further including a conductive material, a photoinitiator, and the like, the antistatic and photocurable functions may be included. In addition, through the ultraviolet curing reaction of the acrylic organic compound it is possible to obtain a film excellent in scratch resistance.


Claims (5)

10 내지 30 nm 크기의 실리카 입자가 분산된 실리카졸을 올리고머와 혼합하여 분산하고 여기에 응집제를 투입하여 실리카졸을 응집시킴으로서 형성되는 올리고머/실리카 나노복합체를 포함하여 이루어지는 것을 특징으로 하는 난반사 코팅제. A diffuse reflection coating agent comprising an oligomer / silica nanocomposite formed by mixing and dispersing silica sol in which silica particles of 10 to 30 nm in size are dispersed with an oligomer and agglomerating silica sol by adding a flocculant thereto. 제1항에 있어서, 상기 올리고머는 우레탄아크릴레이트 올리고머, 폴리에스터 아크릴레이트 올리고머, 또는 에폭시 아크릴레이트 올리고머인 것을 특징으로 하는 난반사 코팅제. The diffuse reflection coating of claim 1, wherein the oligomer is a urethane acrylate oligomer, a polyester acrylate oligomer, or an epoxy acrylate oligomer. 제1항에 있어서, 상기 실리카 입자가 조성물의 고형분에서 0.1 ~ 20 wt%을 차지하는 것을 특징으로 하는 난반사 코팅제. The diffuse reflection coating of claim 1, wherein the silica particles make up 0.1 to 20 wt% of the solids of the composition. 제1항에 있어서, 조성물의 고형분에서 0.01 ~ 20wt% 를 차지하는 폴리치오펜계 전도성 고분자를 더 포함하는 것을 특징으로 하는 난반사 코팅제. The diffuse reflection coating of claim 1, further comprising a polythiophene-based conductive polymer that accounts for 0.01 to 20 wt% in the solid content of the composition. 제1항에 있어서, 조성물의 고형분에서 0.01 ~ 20wt% 를 차지하는 암모늄염계 대전방지제를 더 포함하는 것을 특징으로 하는 난반사 코팅제.The diffuse reflection coating of claim 1, further comprising an ammonium salt-based antistatic agent that accounts for 0.01 to 20 wt% in the solid content of the composition.
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Cited By (3)

* Cited by examiner, † Cited by third party
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KR100708490B1 (en) * 2006-03-29 2007-04-18 주식회사 두산 Anti-glare film and method of manufacturing the same
KR100836013B1 (en) * 2006-07-07 2008-06-09 주식회사 두산 Anti-glare film including complex particles and manufacturing method thereof
KR101347176B1 (en) * 2009-12-03 2014-01-07 한국세라믹기술원 Ultraviolet Cured Organic-Inorganic Hybrid Resin and The Resin Composition For Optical Film

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KR101324260B1 (en) * 2011-12-28 2013-11-01 주식회사 포스코 Insulation coating material for non-oriented electrical steel sheet and method for manufacturing the same

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JP4064130B2 (en) * 2002-03-15 2008-03-19 株式会社きもと Transparent hard coat film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100708490B1 (en) * 2006-03-29 2007-04-18 주식회사 두산 Anti-glare film and method of manufacturing the same
KR100836013B1 (en) * 2006-07-07 2008-06-09 주식회사 두산 Anti-glare film including complex particles and manufacturing method thereof
KR101347176B1 (en) * 2009-12-03 2014-01-07 한국세라믹기술원 Ultraviolet Cured Organic-Inorganic Hybrid Resin and The Resin Composition For Optical Film

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