KR20170106156A - 고흡수성 수지의 제조 방법, 및 고흡수성 수지 - Google Patents
고흡수성 수지의 제조 방법, 및 고흡수성 수지 Download PDFInfo
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- KR20170106156A KR20170106156A KR1020160103024A KR20160103024A KR20170106156A KR 20170106156 A KR20170106156 A KR 20170106156A KR 1020160103024 A KR1020160103024 A KR 1020160103024A KR 20160103024 A KR20160103024 A KR 20160103024A KR 20170106156 A KR20170106156 A KR 20170106156A
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- silica particles
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Abstract
Description
| 실리카 입자 | 상품명 | 물에 대한 접촉각(°) |
| 소수성 실리카 입자 | Aerosil 200 | 14 |
| 친수성 실리카 입자 | ST-O | 3 |
| CRC(g/g) | AUP(g/g) | EFFC(g/g) | SFC(·10-7cm3·s/g) | 겔 강도 (Pa) |
|
| 실시예 1 | 29.3 | 22.0 | 25.7 | 89 | 9158 |
| 실시예 2 | 28.1 | 22.2 | 25.1 | 91 | 9437 |
| 실시예 3 | 27.8 | 21.4 | 24.6 | 115 | 12365 |
| 실시예 4 | 28 | 22.0 | 25 | 93 | 9957 |
| 실시예 5 | 28.1 | 21.5 | 24.8 | 97 | 10588 |
| 실시예 6 | 28.1 | 21.7 | 24.9 | 99 | 11268 |
| 실시예 7 | 28 | 21.6 | 24.8 | 99 | 11302 |
| 비교예 1 | 28.1 | 22.3 | 25.2 | 61 | 6935 |
| 비교예 2 | 28.8 | 21.3 | 25.1 | 82 | 7186 |
Claims (13)
- 내부 가교제의 존재 하에, 적어도 일부가 중화된 산성기를 갖는 수용성 에틸렌계 불포화 단량체를 가교 중합하여 가교 중합체를 포함하는 함수겔 중합체를 형성하는 단계;
상기 함수겔 중합체를 건조, 분쇄 및 분급하여 베이스 수지 분말을 형성하는 단계; 및
물에 대해 10° 초과 150° 이하의 접촉각을 갖는 소수성 실리카 입자 및 물에 대해 10° 이하의 접촉각을 갖는 친수성 실리카 입자의 존재 하에, 탄소수 2 내지 5의 알킬렌 카보네이트의 표면 가교제를 포함하는 표면 가교액을 사용하여 상기 베이스 수지 분말을 표면 가교하는 단계를 포함하는 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 표면 가교 단계는 상기 소수성 실리카 입자, 상기 친수성 실리카 입자, 및 상기 표면 가교제를 포함하는 표면 가교액의 존재 하에, 상기 베이스 수지 분말을 열처리하여 표면 가교하는 단계를 포함하는 고흡수성 수지의 제조 방법.
- 제 2 항에 있어서, 상기 소수성 실리카 입자는 물에 대해 50° 내지 150°의 접촉각을 가지며, 상기 표면 가교액은 분산제를 더 포함하는 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 소수성 실리카 입자 및 친수성 실리카 입자는 각각 상기 베이스 수지 분말의 100 중량부에 대해, 0.0001 내지 0.3 중량부의 함량으로 사용되는 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 수용성 에틸렌계 불포화 단량체는 아크릴산, 메타크릴산, 무수말레인산, 푸말산, 크로톤산, 이타콘산, 2-아크릴로일에탄 술폰산, 2-메타크릴로일에탄술폰산, 2-(메트)아크릴로일프로판술폰산, 또는 2-(메트)아크릴아미드-2-메틸 프로판 술폰산의 음이온성 단량체와 이의 염; (메트)아크릴아미드, N-치환(메트)아크릴레이트, 2-히드록시에틸(메트)아크릴레이트, 2-히드록시프로필(메트)아크릴레이트, 메톡시폴리에틸렌글리콜(메트)아크릴레이트 또는 폴리에틸렌 글리콜(메트)아크릴레이트의 비이온계 친수성 함유 단량체; 및 (N,N)-디메틸아미노에틸(메트)아크릴레이트 또는 (N,N)-디메틸아미노프로필(메트)아크릴아미드의 아미노기 함유 불포화 단량체와 그의 4급화물;로 이루어진 군에서 선택된 1종 이상을 포함하는 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 내부 가교제는 탄소수 8 내지 12의 비스(메트)아크릴아미드, 탄소수 2 내지 10의 폴리올의 폴리(메트)아크릴레이트 및 탄소수 2 내지 10의 폴리올의 폴리(메트)알릴에테르로 이루어진 군에서 선택된 1종 이상을 포함하는 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 베이스 수지 분말은 150 내지 850㎛의 입경을 갖도록 분쇄 및 분급되는 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 표면 가교 단계는 20℃ 내지 130℃의 초기 온도에서 10분 내지 40분에 걸쳐 140℃ 내지 200℃의 최고 온도로 승온하고, 상기 최고 온도를 5 분 내지 80분 동안 유지하여 열처리함으로서 진행되는 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서,
하기 식 1로 표시되는 EFFC가 24g/g 이상 28g/g 이하인 고흡수성 수지를 제조하는 고흡수성 수지의 제조 방법:
[식 1]
EFFC = (CRC + AUP)/2
상기 식 1에서,
CRC는 상기 고흡수성 수지의 생리 식염수(0.9 중량% 염화 나트륨 수용액)에 대한 30분 동안의 원심분리 보수능을 나타내며,
AUP는 상기 고흡수성 수지의 생리 식염수(0.9 중량% 염화 나트륨 수용액)에 대한 0.7psi 하에서 1시간 동안의 가압 흡수능을 나타낸다.
- 제 1 항에 있어서, 생리 식염수(0.685 중량% 염화 나트륨 수용액)의 흐름 유도성(SFC; ·10-7cm3·s/g)이 85 내지 160 (·10-7cm3·s/g)인 고흡수성 수지를 제조하는 고흡수성 수지의 제조 방법.
- 적어도 일부가 중화된 산성기를 갖는 수용성 에틸렌계 불포화 단량체의 제 1 가교 중합체를 포함하는 베이스 수지 분말;
상기 베이스 수지 분말 상에 형성되어 있고, 상기 제 1 가교 중합체가 표면 가교제를 매개로 추가 가교된 제 2 가교 중합체를 포함하는 표면 가교층; 및
상기 표면 가교층 상에 분산되어 있고, 물에 대해 10° 이하의 접촉각을 갖는 친수성 실리카 입자를 포함하는 고흡수성 수지로서,
하기 식 1로 표시되는 EFFC가 24 내지 28g/g이고,
생리 식염수(0.685 중량% 염화 나트륨 수용액)의 흐름 유도성(SFC; ·10-7cm3·s/g)이 85 내지 160 (·10-7cm3·s/g)이며,
겔 강도(G')가 9,000 내지 15,000 Pa인 고흡수성 수지:
[식 1]
EFFC = (CRC + AUP)/2
상기 식 1에서,
CRC는 상기 고흡수성 수지의 생리 식염수(0.9 중량% 염화 나트륨 수용액)에 대한 30분 동안의 원심분리 보수능을 나타내며, AUP는 상기 고흡수성 수지의 생리 식염수(0.9 중량% 염화 나트륨 수용액)에 대한 0.7psi 하에서 1시간 동안의 가압 흡수능을 나타내고,
상기 겔 강도 (G')는 상기 고흡수성 수지에 1 시간 동안 생리 식염수(0.9 중량% 염화 나트륨 수용액)를 흡수시켜 팽윤시킨 후에, 레오미터를 이용하여 측정한 고흡수성 수지의 수평 방향 겔 강도를 나타낸다.
- 제 11 항에 있어서, 상기 표면 가교층 상에 분산되어 있고, 물에 대해 10° 초과 150° 이하의 접촉각을 갖는 소수성 실리카 입자를 더 포함하는 고흡수성 수지.
- 제 11 항 또는 제 12 항에 있어서, 상기 친수성 실리카 입자 또는 상기 소수성 실리카 입자는 상기 표면 가교층 내에 분산되어 있거나, 상기 표면 가교층 표면에 박혀 있는 고흡수성 수지.
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| WO2014017100A1 (en) * | 2012-07-27 | 2014-01-30 | Livedo Corporation | Absorbent article |
| KR20150020030A (ko) * | 2013-08-13 | 2015-02-25 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
| KR20160016714A (ko) * | 2014-08-04 | 2016-02-15 | 주식회사 엘지화학 | 고흡수성 수지 및 이의 제조 방법 |
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| KR20190071319A (ko) * | 2017-12-14 | 2019-06-24 | 주식회사 엘지화학 | 고흡수성 수지 및 이의 제조 방법 |
| WO2019117482A1 (ko) * | 2017-12-15 | 2019-06-20 | 주식회사 엘지화학 | 고흡수성 수지 및 이의 제조 방법 |
| KR20190072406A (ko) * | 2017-12-15 | 2019-06-25 | 주식회사 엘지화학 | 고흡수성 수지 및 이의 제조 방법 |
| CN110167997A (zh) * | 2017-12-15 | 2019-08-23 | 株式会社Lg化学 | 超吸收性聚合物及其制备方法 |
| JP2021506989A (ja) * | 2017-12-15 | 2021-02-22 | エルジー・ケム・リミテッド | 高吸水性樹脂およびその製造方法 |
| US11406963B2 (en) | 2017-12-15 | 2022-08-09 | Lg Chem, Ltd. | Superabsorbent polymer and preparation method thereof |
| KR20200074674A (ko) * | 2018-12-17 | 2020-06-25 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 및 고흡수성 수지 |
| CN112839993A (zh) * | 2019-09-18 | 2021-05-25 | 株式会社Lg化学 | 用于制备超吸收性聚合物的方法 |
| CN112839993B (zh) * | 2019-09-18 | 2023-04-11 | 株式会社Lg化学 | 用于制备超吸收性聚合物的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108350189A (zh) | 2018-07-31 |
| EP3342801B1 (en) | 2023-05-31 |
| EP3342801A1 (en) | 2018-07-04 |
| KR102075737B1 (ko) | 2020-02-10 |
| EP3342801A4 (en) | 2019-01-23 |
| US10773237B2 (en) | 2020-09-15 |
| US20180318793A1 (en) | 2018-11-08 |
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