KR20160062012A - 열가소성 중합체 조성물, 적층체 및 보호 필름 - Google Patents
열가소성 중합체 조성물, 적층체 및 보호 필름 Download PDFInfo
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Abstract
Description
Claims (14)
- 방향족 비닐계 단량체 유래의 구조 단위를 주체로 하는 중합체 블록 F 와, 공액 디엔 단량체 또는 이소부틸렌 단량체 유래의 구조 단위를 주체로 하는 수소 첨가 또는 비수소 첨가의 중합체 블록 G 를 함유하는, 수평균 분자량이 30,000 ∼ 200,000 인 방향족 비닐계 블록 공중합체 (a-1),
아크릴계 중합체 (a-2),
극성기를 함유하는 올레핀계 중합체 (a-3), 및
연화제 (a-4)를,
하기 식 (1) ∼ (3) 을 만족하는 비율로 함유하는 열가소성 중합체 조성물.
0.05 ≤ W(a-2)/W(a-1) ≤ 9 (1)
0.1 < W(a-3)/(W(a-1) + W(a-2) + W(a-3) + W(a-4)) ≤ 0.9 (2)
0 ≤ W(a-4)/(W(a-1) + W(a-2) + W(a-3) + W(a-4)) ≤ 0.5 (3)
(식 중, W(a-1), W(a-2), W(a-3) 및 W(a-4) 는, 각각 상기 열가소성 중합체 조성물 중의 방향족 비닐계 블록 공중합체 (a-1), 아크릴계 중합체 (a-2), 극성기를 함유하는 올레핀계 중합체 (a-3) 및 연화제 (a-4) 의 함유량 (질량 기준) 을 나타낸다.) - 제 1 항에 있어서,
210 ℃ 에서 측정한 전단 속도 1 (1/s) 에 있어서의 전단 점도 ηEa (Pa·s) 와, 210 ℃ 에서 측정한 전단 속도 100 (1/s) 에 있어서의 전단 점도 ηEb (Pa·s) 의 비 (ηEa/ηEb) 가 10 이하인, 열가소성 중합체 조성물. - 제 1 항 또는 제 2 항에 있어서,
상기 방향족 비닐계 블록 공중합체 (a-1) 이, 수평균 분자량 1,000 ∼ 50,000 의 방향족 비닐계 단량체 유래의 구조 단위를 주체로 하는 중합체 블록 F, 및 수평균 분자량이 1,000 ∼ 30,000 인 중합체 블록이고, 그 중합체 블록을 구성하는 공액 디엔 단량체 유래의 1,4-결합 구조 단위의 함유량이 30 몰% 미만인 중합체 블록 g1 과, 수평균 분자량이 25,000 ∼ 190,000 인 중합체 블록이고, 그 중합체 블록을 구성하는 공액 디엔 단량체 유래의 1,4-결합 구조 단위의 함유량이 30 몰% 이상인 중합체 블록 g2 를 포함하는 중합체 블록 G 를 갖고, (F-g1-g2) 구조를 적어도 1 개 포함하는, 열가소성 중합체 조성물. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 방향족 비닐계 단량체가 α-메틸스티렌인, 열가소성 중합체 조성물. - 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
상기 극성기를 갖는 올레핀계 중합체 (a-3) 이, 에틸렌-아세트산비닐 공중합체, 에틸렌-(메트)아크릴산에스테르 공중합체, 에틸렌-(메트)아크릴산 공중합체에서 선택되는 적어도 1 종인, 열가소성 중합체 조성물. - 제 1 항 내지 제 5 항 중 어느 한 항에 기재된 열가소성 중합체 조성물로 이루어지는 층 (A),
아크릴계 점착제를 함유하는 점착제층 (B), 및
폴리올레핀계 중합체를 함유하는 기재층 (C)를 갖고,
이들이 (B)-(A)-(C) 의 순서로 적층된 적층체. - 제 6 항에 있어서,
상기 아크릴계 점착제가, 메타크릴산에스테르 유래의 구조 단위로 이루어지는 적어도 1 개의 중합체 블록 (I-1) 과, 아크릴산에스테르 유래의 구조 단위로 이루어지는 적어도 1 개의 중합체 블록 (I-2) 를 갖는 아크릴계 블록 공중합체 (b-1) 을 함유하는, 적층체. - 제 7 항에 있어서,
상기 아크릴계 블록 공중합체 (b-1) 중의 중합체 블록 (I-1) 의 함유량이 5 ∼ 50 질량% 인, 적층체. - 제 7 항 또는 제 8 항에 있어서,
상기 중합체 블록 (I-2) 를 구성하는 아크릴산에스테르 유래의 구조 단위가, 일반식 CH2=CH-COOR1(P) (식 중, R1 은 탄소수 4 ∼ 6 의 유기기를 나타낸다) 로 나타내는 아크릴산에스테르 (i-1) 및 일반식 CH2=CH-COOR2(Q) (식 중, R2 는 탄소수 7 ∼ 12 의 유기기를 나타낸다) 로 나타내는 아크릴산에스테르 (i-2) 유래이고, 또한 상기 아크릴산에스테르 (i-1) 및 상기 아크릴산에스테르 (i-2) 의 질량비 [(i-1)/(i-2)] 가 90/10 ∼ 10/90 인, 적층체. - 제 6 항 내지 제 9 항 중 어느 한 항에 있어서,
상기 아크릴계 점착제의 210 ℃ 에서 측정된 전단 속도 1 (1/s) 에 있어서의 전단 점도 ηEx (Pa·s) 와, 210 ℃ 에서 측정된 전단 속도 100 (1/s) 에 있어서의 전단 점도 ηEy (Pa·s) 의 비 (ηEx/ηEy) 가 25 이하인, 적층체. - 제 6 항 내지 제 10 항 중 어느 한 항에 있어서,
상기 열가소성 중합체 조성물의 210 ℃ 에서 측정된 전단 속도 1 (1/s) 에 있어서의 전단 점도 ηEa (Pa·s) 와, 210 ℃ 에서 측정된 전단 속도 100 (1/s) 에 있어서의 전단 점도 ηEb (Pa·s) 의 비 (ηEa/ηEb) 와, 상기 아크릴계 점착제의 210 ℃ 에서 측정된 전단 속도 1 (1/s) 에 있어서의 전단 점도 ηEx (Pa·s) 와, 210 ℃ 에서 측정된 전단 속도 100 (1/s) 에 있어서의 전단 점도 ηEy (Pa·s) 의 비 (ηEx/ηEy) 의 차의 절대값이 10 이하인, 적층체. - 제 6 항 내지 제 11 항 중 어느 한 항에 있어서,
상기 기재층 (C) 를 구성하는 폴리올레핀계 중합체가 폴리프로필렌계 중합체인, 적층체. - 제 6 항 내지 제 12 항 중 어느 한 항에 있어서,
상기 (A) ∼ (C) 의 층이 공압출 성형 가공법에 의해 적층된, 적층체. - 제 6 항 내지 제 13 항 중 어느 한 항에 기재된 적층체로 이루어지는 보호 필름.
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| JP6469011B2 (ja) | 2019-02-13 |
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| WO2015046251A1 (ja) | 2015-04-02 |
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| CN105593295A (zh) | 2016-05-18 |
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| KR102188811B1 (ko) | 2020-12-09 |
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