KR20190115120A - 멀티모달 폴리에틸렌 중합을 위한 반응기 시스템 - Google Patents
멀티모달 폴리에틸렌 중합을 위한 반응기 시스템 Download PDFInfo
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Abstract
Description
비교예1 | 실시예1 | 실시예2 | 비교예2 | 비교예3 | 실시예3 | 실시예4 | 비교예4 | 실시예5 | 실시예6 | |
WA, % | 55 | 55 | 55 | 55 | 45 | 45 | 30 | 50 | 50 | 30 |
WB, % | 20 | 20 | 20 | 20 | 25 | 25 | 30 | 10 | 10 | 30 |
WC, % | 25 | 25 | 25 | 25 | 30 | 30 | 40 | 40 | 40 | 40 |
제1 반응기 | ||||||||||
중합 유형 |
단일 | 단일 | 단일 | 단일 | 단일 | 단일 | 단일 | 단일 | 단일 | 단일 |
온도, ℃ | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 | 80 |
총 압력, kPa | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 |
에틸렌, g | 1,100.72 | 1,100.70 | 1,100.86 | 1,100.74 | 900.30 | 900.30 | 540.50 | 725.21 | 725.57 | 485.70 |
수소, g | 1.62 | 1.62 | 1.55 | 1.55 | 2.97 | 2.99 | 1.34 | 1.13 | 1.13 | 1.23 |
수소 제거 유닛 | ||||||||||
압력, kPa (abs) | 150 | 115 | 105 | 102 | 150 | 105 | 105 | 150 | 115 | 105 |
수소 제거, % |
97.6 | 98.0 | 99.1 | 99.9 | 97.9 | 98.8 | 98.9 | 97.7 | 98.5 | 98.3 |
제2 반응기 | ||||||||||
중합 유형 |
단일 | 단일 | 단일 | 단일 | 공 | 공 | 단일 | 공 | 공 | 단일 |
온도, ℃ | 70 | 70 | 70 | 70 | 70 | 70 | 70 | 80 | 80 | 70 |
총 압력, kPa | 250 | 250 | 250 | 250 | 250 | 250 | 400 | 300 | 300 | 400 |
에틸렌, g | 400.52 | 400.81 | 400.35 | 400.06 | 500.17 | 500.31 | 540.36 | 145.35 | 145.21 | 485.78 |
수소, g | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
1-부텐, g | 0 | 0 | 0 | 0 | 18.84 | 18.91 | 0 | 8 | 8 | 0 |
제3 반응기 | ||||||||||
중합 유형 |
공 | 공 | 공 | 공 | 공 | 공 | 단일 | 공 | 공 | 공 |
온도, ℃ | 70 | 70 | 70 | 70 | 70 | 70 | 80 | 80 | 80 | 70 |
총 압력, kPa | 400 | 400 | 400 | 400 | 400 | 400 | 600 | 600 | 600 | 600 |
에틸렌, g | 500.74 | 500.11 | 500.30 | 500.63 | 600.02 | 601.19 | 720.60 | 580.53 | 580.46 | 647.54 |
수소, g | 0 | 0.001 | 0.001 | 0.001 | 0 | 0.001 | 0 | 0.59 | 1.37 | 0 |
1-부텐, g | 35.05 | 30.01 | 30.03 | 30.04 | 60.01 | 60.04 | 0 | 27 | 27 | 20.60 |
비교예1 | 실시예1 | 실시예2 | 비교예2 | 비교예3 | 실시예3 | 실시예4 | 비교예4 | 실시예5 | 실시예6 | |
분말 | ||||||||||
MI5 , g/10분 | 0.474 | 0.372 | 0.240 | 0.242 | 0.275 | 0.200 | - | 54.80 | 48.07 | NA |
MI21 , g/10분 | 13.83 | 10.80 | 7.38 | 7.23 | 6.40 | 4.81 | 0.145 | 641 | 653 | NA |
밀도, g/cm3 | 0.9565 | 0.9578 | 0.9555 | 0.9567 | 0.9441 | 0.9438 | 0.9534 | 0.9606 | 0.9590 | 0.9409 |
고유 점도, dl/g |
- | - | - | - | - | - | 9.00 | 1.07 | 1.06 | 23 |
Mw | 276,413 | 244,279 | 291,295 | 319,487 | 252,160 | 306,468 | 868,813 | 77,334 | 91,752 | 1,269,336 |
Mn | 8,877 | 8,724 | 8,843 | 8,472 | 8,016 | 7,637 | 24,107 | 5,400 | 6,035 | 23,450 |
Mz | 2,788,607 | 2,370,678 | 3,401,041 | 4,135,007 | 1,638,224 | 2,643,953 | 5,112,060 | 667,276 | 1,027,956 | 5,262,195 |
PDI | 31 | 28 | 33 | 38 | 31 | 40 | 36 | 14 | 15 | 54.13 |
펠릿 | ||||||||||
MI5 , g/10분 | 0.436 | 0.410 | 0.232 | 0.199 | 0.298 | 0.195 | - | 60.62 | 55.47 | - |
MI21, g/10분 | 14.46 | 11.68 | 7.876 | 6.696 | 7.485 | 4.604 | - | 713.1 | 752.2 | - |
밀도, g/cm3 | 0.9577 | 0.9574 | 0.9568 | 0.9566 | 0.9442 | 0.9440 | - | 0.9608 | 0.9594 | - |
고유 점도, dl/g |
2.97 | 3.03 | 3.52 | 3.64 | 3.12 | 3.37 | 9.00 | 1.0 | 1.1 | 23 |
% 결정화도, % | 64.70 | 67.24 | 64.78 | 66.16 | 57.49 | 54.05 | 68.23 | 69.52 | 65.64 | 58.20 |
샤르피, 23 ℃ , kJ/m2 | 23.5 | 29.9 | 35.3 | 30.5 | 47.9 | 50.9 | 84.4 | 1.5 | 1.8 | 85.41 |
굴곡 탄성률, MPa |
1,130 | 1,210. | 1,123 | 1,123 | 727 | 785 | 1,109 | 1,147 | 1,196 | 890 |
Claims (11)
- 멀티모달 폴리에틸렌 중합 공정(multimodal polyethylene polymerization process)을 위한 반응기 시스템으로서, 다음을 포함하는 반응기 시스템:
(a) 제1 반응기;
(b) 상기 제1 반응기와 제2 반응기 사이에 배열된 수소 제거 유닛으로서, 상기 수소 제거 유닛은 감압 장비와 연결된 적어도 하나의 용기를 포함하고, 상기 감압 장비는 바람직하게는 진공 펌프, 압축기, 송풍기, 이젝터(ejector) 또는 이들의 조합으로부터 선택되며, 상기 감압 장비는 작동 압력을 100 내지 200 kPa(abs) 범위의 압력으로 조절하는 것을 가능하게 하는, 수소 제거 유닛;
(c) 상기 제2 반응기; 및
(d) 제3 반응기. - 제 1 항에 있어서, 상기 감압 장비는 상기 수소 제거 유닛의 작동 압력을 103 내지 145 kPa(abs) 범위의, 바람직하게는 104 내지 130 kPa(abs) 범위의, 가장 바람직하게는 105 내지 115 kPa(abs) 범위의, 압력으로 조절하는 것을 가능하게 하는, 반응기 시스템.
- 제 1 항 또는 제 2 항에 있어서, 상기 수소 제거 유닛은 수소와 액체 희석제의 분리를 위한 스트리핑 컬럼(stripping column)을 더 함유하는, 반응기 시스템.
- 제 1 항 내지 제 3 항 중 어느 한 항에 따른 반응기 시스템에서 멀티모달 폴리에틸렌 조성물을 제조하는 방법으로서, 다음의 단계들을 포함하는 제조 방법:
(a) 에틸렌을, 상기 제1 반응기 내의 불활성 탄화수소 매질에서, 지글러-나타 촉매 또는 메탈로센으로부터 선택된 촉매 시스템의 존재하에, 그리고, 상기 제1 반응기 내의 증기상에 존재하는 전체 가스를 기준으로 하여 0.1 내지 95 몰%의 양의 수소의 존재하에, 중합함으로써, 저분자량 폴리에틸렌 또는 중간 분자량 폴리에틸렌을 얻는 단계;
(b) 상기 수소 제거 유닛에서, 상기 제1 반응기로부터 얻어진 슬러리 혼합물에 포함된 상기 수소의 98.0 내지 99.8 wt%를, 103 내지 145 kPa(abs) 범위의 압력에서 제거하고, 얻어진 잔류 혼합물을 상기 제2 반응기로 이송하는 단계;
(c) 에틸렌 및 선택적으로(optionally) C4 내지 C12 α-올레핀 코모노머를, 상기 제2 반응기에서, 지글러-나타 촉매 또는 메탈로센으로부터 선택된 촉매 시스템의 존재하에, 그리고 단계 (b)에서 얻어진 양의 수소의 존재하에, 중합함으로써, 제1 고분자량 폴리에틸렌 또는 제1 초고분자량(ultra high molecular weight) 폴리에틸렌을 호모폴리머 또는 코폴리머의 형태로 얻고, 그 결과의 혼합물을 상기 제3 반응기로 이송하는 단계; 및
(d) 에틸렌 및 선택적으로(optionally) α-올레핀 코모노머를, 상기 제3 반응기에서, 지글러-나타 촉매 또는 메탈로센으로부터 선택된 촉매 시스템의 존재하에, 그리고 상기 제3 반응기 내의 증기상에 존재하는 전체 가스를 기준으로 하여 1 내지 70 몰% 범위의 양의, 바람직하게는 1 내지 60 몰% 범위의 양의, 수소의 존재하에, 또는 선택적으로(optionally) 수소의 실질적 부재하에, 중합함으로써, 제2 고분자량 폴리에틸렌 또는 제2 초고분자량 폴리에틸렌을 호모폴리머 또는 코폴리머 형태로 얻는 단계. - 제 4 항에 있어서, 상기 제거는 상기 수소의 98.0 내지 99.7%를, 더욱 바람직하게는 98.0 내지 99.5%를, 가장 바람직하게는 98.0 내지 99.1%를, 제거하는 것인, 제조 방법.
- 제 4 항 또는 제 5 항에 있어서, 상기 수소 제거 유닛의 작동 압력은 103 내지 145 kPa(abs)의, 더욱 바람직하게는 104 내지 130 kPa(abs)의, 가장 바람직하게는 105 내지 115 kPa(abs)의, 범위인, 제조 방법.
- 제 4 항 내지 제 6 항 중 어느 한 항에 따른 제조 방법에 의해 얻을 수 있는 멀티모달 폴리에틸렌 조성물로서, 다음을 포함하는 멀티모달 폴리에틸렌 조성물:
(A) 30 내지 65 중량부의 상기 저분자량 폴리에틸렌 또는 상기 중간 분자량 폴리에틸렌;
(B) 5 내지 40 중량부의 상기 제1 고분자량 폴리에틸렌 또는 상기 제1 초고분자량 폴리에틸렌; 및
(C) 10 내지 60 중량부의 상기 제2 고분자량 폴리에틸렌 또는 상기 제2 초고분자량 폴리에틸렌 코폴리머. - 제 7 항에 있어서, 상기 멀티모달 폴리에틸렌 조성물은 겔 투과 크로마토그래피로 측정된 80,000 내지 5,000,000 g/mol의, 바람직하게는 150,000 내지 3,000,000 g/mol의, 중량평균 분자량을 갖는, 멀티모달 폴리에틸렌 조성물.
- 제 7 항 또는 제 8 항에 있어서, 상기 멀티모달 폴리에틸렌 조성물은 겔 투과 크로마토그래피로 측정된 5,000 내지 100,000 g/mol의, 바람직하게는 5,000 내지 80,000 g/mol의, 수평균 분자량을 갖는, 멀티모달 폴리에틸렌 조성물.
- 제 7 항 내지 제 9 항 중 어느 한 항에 있어서, 상기 멀티모달 폴리에틸렌 조성물은 겔 투과 크로마토그래피로 측정된 700,000 내지 10,000,000 g/mol의, 바람직하게는 700,000 내지 8,000,000 g/mol의, Z평균 분자량을 갖는, 멀티모달 폴리에틸렌 조성물.
- 제 7 항 내지 제 10 항 중 어느 한 항에 있어서, 상기 멀티모달 폴리에틸렌 조성물은 ASTM D 1505에 따른 0.930 내지 0.965 g/cm3의 밀도, 및/또는, 0.01 내지 60 g/10분의 용융 흐름 지수 MI5, 및/또는 0.05 내지 800 g/10분의 MI21, 및/또는 ISO 1628-3에 따라 측정된 1.0 내지 30의, 바람직하게는 1.5 내지 30의, 고유 점도를 갖는, 멀티모달 폴리에틸렌 조성물.
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