ADHESIVE COMPOSITION FOR FOLDABLE DISPLAY AND OPTICAL MEMBER FOR FOLDABLE DISPLAY
Provided are an adhesive composition for a foldable display, and an optical member for a foldable display. The adhesive composition for a foldable display comprises: a (meth)acrylic copolymer (A) which contains a hydroxyl group-containing monomer unit (a1), a carboxyl group-containing monomer unit (...
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Sprache: | eng ; kor |
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Zusammenfassung: | Provided are an adhesive composition for a foldable display, and an optical member for a foldable display. The adhesive composition for a foldable display comprises: a (meth)acrylic copolymer (A) which contains a hydroxyl group-containing monomer unit (a1), a carboxyl group-containing monomer unit (a2), and an alkyl (meth)acrylate monomer unit (a3), wherein a content of the unit (a1) is 1.5 to 20 mass%, and a weight average molecular weight of the (meth)acrylic copolymer (A) is 1,000,000 or more; a (meth)acrylic copolymer (B) which contains a hydroxyl group-containing monomer unit (b1), wherein a content of the unit (b1) is 3 to 40 mass%, and a weight average molecular weight of the (meth)acrylic copolymer (B) is 2,500 to 10,000; and an isocyanate crosslinking agent. A content of the copolymer (B) is 3 to 50 parts by weight with respect to 100 parts by weight of the copolymer (A). According to the present invention, the adhesive composition for a foldable display is used to form an adhesive layer which is excellent in bending resistance at room temperature.
수산기 함유 단량체 단위(a1), 카르복시기 함유 단량체 단위(a2) 및 (메타)아크릴산 알킬에스테르 단량체 단위(a3)를 포함하고 상기 단위(a1)의 함유율이 1.5질량%~20질량%이며 또한 중량 평균 분자량이 100만 이상인 (메타)아크릴계 공중합체(A)와, 수산기 함유 단량체 단위(b1)를 포함하고 상기 단위(b1)의 함유율이 3질량%~40질량%이며 또한 중량 평균 분자량이 2500~10000인 (메타)아크릴계 공중합체(B)와, 이소시아네이트계 가교제를 포함하고, 상기 공중합체(B)의 함유량이 상기 공중합체(A) 100질량부에 대해 3질량부~50질량부인 폴더블 디스플레이용 점착제 조성물 및 폴더블 디스플레이용 광학 부재. |
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