KR102541494B1 - 고흡수성 수지의 제조 방법 - Google Patents
고흡수성 수지의 제조 방법 Download PDFInfo
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Abstract
Description
파쇄 강도(kgf) | 표준편차 | 재미분 발생량 (중량%) | |
실시예 1 | 1.40 | 0.08 | 8 |
실시예 2 | 1.32 | 0.02 | 12 |
비교예 1 | 1.17 | 0.24 | 15 |
비교예 2 | 0.98 | 0.29 | 17 |
비교예 3 | 1.20 | 0.20 | 13 |
비교예 4 | 0.88 | 0.22 | 15 |
비교예 5 | 0.98 | 0.30 | 16 |
Claims (14)
- 고흡수성 수지의 제조 단계에서 얻어지는 150 ㎛ 이하의 입경을 갖는 미분, 반응성 관능기를 가지는 표면 개질된 무기물 및 물을 혼합하고 건조하여 미분 재조립체를 제조하는 단계를 포함하고,
상기 표면 개질된 무기물은 에폭시기, 옥세탄기 및 이소시아네이트기로 이루어진 군에서 선택된 1 종 이상의 반응성 관능기를 가지는, 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 150 ㎛ 이하의 입경을 갖는 미분은, 수용성 에틸렌계 불포화 단량체 및 중합 개시제를 포함하는 단량체 혼합물을 중합하여 함수겔상 중합체를 형성하는 제 1 단계; 및 상기 함수겔상 중합체를 건조 및 분쇄하여 150 ㎛ 초과 850 ㎛ 이하의 입경을 갖는 정상 입자와 150 ㎛ 이하의 입경을 갖는 미분으로 분급하는 제 2 단계를 통해 얻어지는 미분을 포함하는, 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 150 ㎛ 이하의 입경을 갖는 미분은, 수용성 에틸렌계 불포화 단량체 및 중합 개시제를 포함하는 단량체 혼합물을 중합하여 함수겔상 중합체를 형성하는 제 1 단계; 상기 함수겔상 중합체를 건조 및 분쇄하여 150 ㎛ 초과 850 ㎛ 이하의 입경을 갖는 정상 입자와 150 ㎛ 이하의 입경을 갖는 미분으로 분급하는 제 2 단계; 및 상기 정상 입자를 표면 가교한 후 150 ㎛ 초과 850 ㎛ 이하의 입경을 갖는 표면 가교된 정상 입자와 150 ㎛ 이하의 입경을 갖는 표면 가교된 미분으로 분급하는 제 3 단계를 통해 얻어지는 미분을 포함하는, 고흡수성 수지의 제조 방법.
- 삭제
- 제 1 항에 있어서, 상기 표면 개질된 무기물은 무기물로서 실리카, 알루미나 혹은 이들의 혼합물을 포함하는, 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 표면 개질된 무기물은 평균 입경이 1 내지 20 nm인, 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 표면 개질된 무기물은 미분 100 중량부에 대해 0.01 내지 1 중량부로 사용되는, 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 물은 미분 100 중량부에 대해 80 내지 120 중량부로 첨가되는, 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 미분 재조립체를 제조하는 단계에 첨가되는 물의 온도는 40℃ 내지 90℃인, 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 미분 재조립체를 제조하는 단계에서 건조 공정은 120 내지 220℃에서 수행되는, 고흡수성 수지의 제조 방법.
- 제 1 항에 있어서, 상기 미분 재조립체를 제조하는 단계에서 얻은 미분 재조립체를 150 ㎛ 초과 850 ㎛ 이하의 입경을 갖는 재조립체 정상 입자와 150 ㎛ 이하의 입경을 갖는 재미분으로 분급하는 단계를 추가로 포함하는, 고흡수성 수지의 제조 방법.
- 제 11 항에 있어서, 상기 재미분은 상기 미분 재조립체를 제조하는 단계에 투입하는, 고흡수성 수지의 제조 방법.
- 제 2 항에 있어서, 상기 미분 재조립체, 혹은 상기 미분 재조립체와 정상 입자를 표면 가교하는 단계를 추가로 포함하는, 고흡수성 수지의 제조 방법.
- 제 13 항에 있어서, 상기 표면 가교하는 단계에서 얻은 표면 가교된 고흡수성 수지를 150 ㎛ 초과 850 ㎛ 이하의 입경을 갖는 표면 가교 정상 입자와 150 ㎛ 이하의 입경을 갖는 표면 가교 미분으로 분급하는 단계를 추가로 포함하고,
상기 표면 가교 미분은 상기 미분 재조립체를 제조하는 단계에 투입하는, 고흡수성 수지의 제조 방법.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/266,826 US12023646B2 (en) | 2019-09-11 | 2020-06-18 | Preparation method of super absorbent polymer |
CN202080004377.8A CN112789322B9 (zh) | 2019-09-11 | 2020-06-18 | 超吸收性聚合物的制备方法 |
JP2021511622A JP7233796B2 (ja) | 2019-09-11 | 2020-06-18 | 高吸水性樹脂の製造方法 |
EP20842662.7A EP3822305A4 (en) | 2019-09-11 | 2020-06-18 | PROCESS FOR PREPARING A SUPERABSORBENT POLYMER |
BR112021003919-8A BR112021003919A2 (pt) | 2019-09-11 | 2020-06-18 | método de preparação de polímero super absorvente |
PCT/KR2020/007931 WO2021049738A1 (ko) | 2019-09-11 | 2020-06-18 | 고흡수성 수지의 제조 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20190113107 | 2019-09-11 | ||
KR1020190113107 | 2019-09-11 |
Publications (2)
Publication Number | Publication Date |
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KR20210031364A KR20210031364A (ko) | 2021-03-19 |
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CN112789322B9 (zh) | 2023-03-17 |
US12023646B2 (en) | 2024-07-02 |
KR20210031364A (ko) | 2021-03-19 |
CN112789322A (zh) | 2021-05-11 |
BR112021003919A2 (pt) | 2021-05-18 |
US20210379563A1 (en) | 2021-12-09 |
EP3822305A4 (en) | 2021-12-15 |
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