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1. WO2020116918 - OPTICAL FILM ADHESIVE, ADHESIVE LAYER, OPTICAL MEMBER, AND IMAGE DISPLAY APPARATUS

Publication Number WO/2020/116918
Publication Date 11.06.2020
International Application No. PCT/KR2019/016972
International Filing Date 04.12.2019
IPC
C09J 133/04 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
133Adhesives based on 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
04Homopolymers or copolymers of esters
C09J 11/00 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
11Features of adhesives not provided for in group C09J9/76
C08L 67/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
67Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
G02B 5/30 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5Optical elements other than lenses
30Polarising elements
C08K 5/5415 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUSE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
5Use of organic ingredients
54Silicon-containing compounds
541containing oxygen
5415containing at least one Si-O bond
C08L 83/06 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
83Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Compositions of derivatives of such polymers
04Polysiloxanes
06containing silicon bound to oxygen-containing groups
Applicants
  • 삼성에스디아이 주식회사 SAMSUNG SDI CO., LTD. [KR]/[KR]
Inventors
  • 쿠니히로이누이 KUNIHIRO, Inui
Agents
  • 특허법인 아주 AJU INTERNATIONAL LAW & PATENT GROUP
Priority Data
10-2019-013811131.10.2019KR
2018-22751804.12.2018JP
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) OPTICAL FILM ADHESIVE, ADHESIVE LAYER, OPTICAL MEMBER, AND IMAGE DISPLAY APPARATUS
(FR) ADHÉSIF POUR FILM OPTIQUE, COUCHE ADHÉSIVE, ÉLÉMENT OPTIQUE ET DISPOSITIF D'AFFICHAGE D'IMAGE
(KO) 광학 필름용 점착제, 점착제층, 광학 부재 및 화상표시장치
Abstract
(EN)
The present invention provides an optical film adhesive which can have improved durability under severe conditions (high temperature, high humidity and heat shock) and, simultaneously, inhibits bending and scratching on both sides even when used in a one-side protected polarizing plate, and which also has excellent reworkability (processability). The adhesive for an optical film comprises (A) a (meth)acrylic ester copolymer, the (meth)acrylic ester copolymer (A) comprises: (a1) approximately 10-95 wt% of a unit derived from an (meth)acrylic acid alkyl ester monomer; (a2) approximately 5-90 wt% of a unit derived from an (meth)acrylic acid alkyl ester monomer having an alkoxyalkyl group or an alkoxyalkylene glycol group; and (a3) a unit derived from a functional group-containing monomer, which is a (meth)acrylic acid derivative monomer having one radical polymerizable functional group, in an amount of more than approximately 0 wt% and less than approximately 5 wt% (wherein the sum of the amounts of the units (a1), (a2) and (a3) is 100 wt%), and the (meth)acrylic acid ester copolymer (A) has a glass transition temperature of higher than approximately -55°C and lower than or equal to approximately -50°C, and a weight average molecular weight of approximately 700,000-2,000,000.
(FR)
La présente invention concerne un adhésif pour film optique qui peut présenter une durabilité améliorée dans des conditions difficiles (température élevée, humidité élevée et choc thermique) et qui, dans le même temps, inhibe la flexion et les rayures des deux côtés même lorsqu'il est utilisé dans une plaque polarisante protégée d'un seul côté, et qui présente également une excellente aptitude au retraitement (transformabilité). L'adhésif pour film optique comprend (A) un copolymère d'ester (méth)acrylique, le copolymère d'ester (méth)acrylique (A) comportant : (a1) environ 10 à 95 % en poids d'un motif dérivé d'un monomère d'ester alkylique d'acide (méth)acrylique ; (a2) environ 5 à 90 % en poids d'un motif dérivé d'un monomère d'ester alkylique d'acide (méth)acrylique possédant un groupe alcoxyalkyle ou un groupe alcoxyalkylène-glycol ; et (a3) un motif dérivé d'un monomère contenant un groupe fonctionnel, qui est un monomère dérivé de l'acide (méth)acrylique possédant un groupe fonctionnel polymérisable par voie radicalaire, à raison de plus d'environ 0 % en poids, mais de moins d'environ 5 % en poids (la somme des quantités des motifs (a1), (a2) et (a3) étant égale à 100 % en poids), et le copolymère d'ester d'acide (méth)acrylique (A) présente une température de transition vitreuse supérieure à environ -55 °C et inférieure ou égale à environ -50 °C et un poids moléculaire moyen en poids variant d'environ 700 000 à 2 000 000.
(KO)
본 발명은 편면 보호 편광판에 사용했을 경우에도 가혹한 환경 하(고온, 고습, 열충격)에 있어서의 내구성을 향상시키는 동시에 휨 및 타흔의 양쪽을 억제할 수 있고, 더욱이 리워크성 (가공성)도 뛰어난 광학 필름용 점착제를 제공한다. 상기 광학 필름용 점착제는 (메타)아크릴산 에스터 공중합체(A)을 포함하는 광학 필름용 점착제로서, 상기 (메타)아크릴산 에스터 공중합체(A)는 (a1)(메타)아크릴산 알킬 에스터 단량체 유래의 구성 단위 약 10질량% 이상 약 95질량% 이하; (a2)알콕시알킬기 또는 알콕시알킬렌글리콜기를 갖는 (메타)아크릴산 알킬 에스터 단량체 유래의 구성 단위 약 5질량% 이상 약 90질량% 이하; 및 (a3)라디칼 중합성 관능기를 1개 갖는 (메타)아크릴산 유도체 단량체인 관능기 함유 단량체 유래의 구성 단위 약 0 질량% 초과 약 5질량% 미만(단, 상기 (a1), (a2) 및 (a3) 유래의 구성 단위의 합계량은 100질량%)를 포함하고, 상기 (메타)아크릴산 에스터 공중합체(A)의 유리 전이 온도가 약 -55℃ 초과 약 -50℃ 이하이며, 중량 평균 분자량이 약 70만 이상 약 200만 이하이다.
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