KR20210112281A - 점착성 조성물, 점착제 및 점착시트 - Google Patents
점착성 조성물, 점착제 및 점착시트 Download PDFInfo
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Abstract
중합체를 구성하는 모노머 단위로서, 방향환을 복수 갖는 모노머를 함유하는 동시에, 카복시기를 갖는 모노머를 함유하는 (메타) 아크릴산 에스테르 중합체를 주성분으로 하는 점착성 조성물로서, (메타) 아크릴산 에스테르 중합체 중에서의 방향환을 갖는 모노머의 함유량이, 10∼70질량%이며, (메타) 아크릴산 에스테르 중합체 중에서의 카복시기를 갖는 모노머의 함유량이, 7∼40질량%인 점착성 조성물인 것을 특징으로 한다.
Description
도 2는 본 발명의 제2 실시 형태에 따른 점착 시트의 단면도이다.
|
(메타) 아크릴산 에스테르 중합체(A) |
에폭시계 가교제 |
아지리딘계 가교제 |
이소시아네이트계 가교제 |
|
조성 | Mw | 질량부 | 질량부 | 질량부 | |
실시예1 | BA/ALEN10/AA =40/50/10 |
40만 |
0.05 | - | - |
실시예2 | 0.10 | - | - | ||
실시예3 | - | 0.10 | - | ||
실시예4 | - | 0.15 | - | ||
실시예5 | BA/ALEN10/AA =60/30/10 |
40만 |
0.10 | - | - |
실시예6 | - | 0.10 | - | ||
실시예7 | BA/ALEN10/AA =20/70/10 |
40만 |
0.10 | - | - |
실시예8 | - | 0.10 | - | ||
실시예9 | BA/ALEN10/HEA =30/50/20 |
40만 |
- | - | 0.10 |
실시예10 | - | - | 0.20 | ||
실시예11 | - | - | 0.30 | ||
실시예12 | BA/ALEN10/AA =43/50/7 |
40만 | 0.10 | - | - |
비교예1 | BA/ALEN10/AA =45/50/5 |
40만 | 0.10 | - | - |
비교예2 | BA/ALEN10/AA =49/50/1 |
40만 | 0.10 | - | - |
비교예3 | BA/ALEN10/HEA =35/50/15 |
40만 | - | - | 0.10 |
비교예4 | BA/ALEN10/HEA =49/50/1.0 |
40만 | - | - | 0.10 |
비교예5 | BA/AA =90/10 |
40만 | 0.10 | - | - |
비교예6 | BA/HEA =80/20 |
40만 | - | - | 0.10 |
|
점착력 (N/25mm) |
지핑 | 겔분률 (%) |
굴절율 | 내습열백화(85℃85%RH,120h) | |
589nm,23℃ | 육안 | 헤이즈값(%) | ||||
실시예1 | 13.4 | △ | 67 | 1.542 | ◎ | 0.4 |
실시예2 | 6.5 | △ | 77 | 1.543 | ◎ | 0.4 |
실시예3 | 13.4 | △ | 23 | 1.542 | ◎ | 0.4 |
실시예4 | 7.8 | △ | 47 | 1.542 | ◎ | 0.4 |
실시예5 | 32.0 | ○ | 75 | 1.513 | ◎ | 0.3 |
실시예6 | 33.1 | ○ | 43 | 1.512 | ◎ | 0.3 |
실시예7 | 1.1 | △ | 75 | 1.570 | ◎ | 0.4 |
실시예8 | 1.8 | △ | 40 | 1.569 | ◎ | 0.4 |
실시예9 | 42.3 | ○ | 66 | 1.543 | ◎ | 0.4 |
실시예10 | 41.4 | ○ | 70 | 1.543 | ◎ | 0.4 |
실시예11 | 39.8 | ○ | 77 | 1.544 | ◎ | 0.4 |
실시예12 | 15.7 | △ | 65 | 1.543 | ○ | 0.5 |
비교예1 | 20.8 | △ | 65 | 1.542 | × | 0.8 |
비교예2 | 30.4 | △ | 55 | 1.541 | × | 5.0 |
비교예3 | 42.1 | ○ | 60 | 1.542 | × | 7.0 |
비교예4 | 45.3 | ○ | 45 | 1.542 | × | 20.2 |
비교예5 | 38.6 | ○ | 71 | 1.470 | ◎ | 0.4 |
비교예6 | 37.5 | ○ | 65 | 1.471 | ◎ | 0.4 |
11…점착제층
12, 12a, 12b…박리 시트
13…기재
Claims (14)
- 중합체를 구성하는 모노머 단위로서, 방향환을 복수 갖는 모노머를 함유하는 동시에, 카복시기를 갖는 모노머를 함유하는 (메타) 아크릴산 에스테르 중합체를 주성분으로 하는 점착성 조성물로서,
상기 (메타) 아크릴산 에스테르 중합체 중에서의 상기 방향환을 갖는 모노머의 함유량은, 10∼70질량%이며,
상기 (메타) 아크릴산 에스테르 중합체 중에서의 상기 카복시기를 갖는 모노머의 함유량은, 7∼40질량%인 것을 특징으로 하는 점착성 조성물. - 청구항 1에 있어서,
상기 방향환을 복수 갖는 모노머는, 비페닐환을 갖는 모노머인 것을 특징으로 하는 점착성 조성물. - 청구항 2에 있어서,
상기 비페닐환을 갖는 모노머는, 비페닐 옥시 구조 함유 (메타) 아크릴레이트인 것을 특징으로 하는 점착성 조성물. - 청구항 1에 있어서,
상기 점착성 조성물은, 가교제를 더 함유하는 것을 특징으로 하는 점착성 조성물. - 청구항 4에 있어서,
상기 가교제는, 이소시아네이트계 가교제, 에폭시계 가교제 및 아지리딘계 가교제로 이루어지는 군으로부터 선택되는 적어도 1종인 것을 특징으로 하는 점착성 조성물. - 청구항 4에 있어서,
상기 점착성 조성물 중에서의 상기 가교제의 함유량은, 상기 (메타) 아크릴산 에스테르 중합체 100질량부에 대하여, 0.001∼5질량부인 것을 특징으로 하는 점착성 조성물. - 청구항 1에 있어서,
상기 (메타) 아크릴산 에스테르 중합체의 중량평균 분자량은, 20만∼200만인 것을 특징으로 하는 점착성 조성물. - 청구항 1 내지 7 중 어느 한 항에 기재된 점착성 조성물을 가교하여 이루어지는 점착제.
- 청구항 8에 있어서,
상기 점착제의 굴절율은, 1.50 이상인 것을 특징으로 하는 점착제. - 청구항 8에 있어서,
2장의 두께 1.1mm의 무알칼리 글라스 사이에 끼워진 두께 50μm의 상기 점착제를 85℃, 85% RH의 조건 하에서 120시간 보관하고, 그 후 23℃, 50% RH의 상온 상습으로 되돌린 때의, 상기 점착제의 헤이즈 값이, 1.0% 이하인 것을 특징으로 하는 점착제. - 기재와, 점착제층을 구비한 점착 시트로서,
상기 점착제층은, 청구항 8에 기재된 점착제로 이루어지는 것을 특징으로 하는 점착 시트. - 청구항 11에 있어서,
상기 기재는, 광학부재인 것을 특징으로 하는 점착 시트. - 2장의 박리 시트와,
상기 2장의 박리 시트의 박리면과 접하도록 상기 박리 시트에 협지된 점착제층을 구비한 점착 시트로서,
상기 점착제층은, 청구항 8에 기재된 점착제로 이루어지는 것을 특징으로 하는 점착 시트. - 청구항 13에 있어서,
상기 점착 시트는, 2장의 글라스 기판을 첩합하기 위한 점착 시트인 것을 특징으로 하는 점착 시트.
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CN108753181A (zh) * | 2018-05-23 | 2018-11-06 | 广东东立新材料科技股份有限公司 | 一种有机硅改性oca光学胶、光学胶带及其制备方法 |
CN108753182A (zh) * | 2018-05-23 | 2018-11-06 | 广东东立新材料科技股份有限公司 | 一种性能优异的oca光学胶、光学胶带及其制备方法 |
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JP2023151518A (ja) | 2022-03-31 | 2023-10-16 | 日東電工株式会社 | 粘着剤 |
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