| 发明名称 | Method for preparing a super absorbent polymer | ||
| 摘要 | The present invention relates to a method for preparing a super absorbent polymer. The method for preparing a super absorbent polymer according to the present invention comprises the steps of: carrying out a thermal polymerization or a photopolymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator to form a hydrogel polymer; drying the hydrogel polymer; pulverizing the dried polymer; mixing a fine powder having a particle diameter of 180 μm or less and a polymer having a particle diameter of 300 μm or more among the pulverized polymer; and adding steam to the mixture to carry out a reassembling. According to the present invention, the super absorbent polymer having a high fine powder aggregation strength can be obtained. | ||
| 申请公布号 | US9433921(B2) | 申请公布日期 | 2016.09.06 |
| 申请号 | US201414911220 | 申请日期 | 2014.07.17 |
| 申请人 | LG Chem, Ltd. | 发明人 | Ryu Chul Hee;Kim Gi Cheul |
| 分类号 | B01J20/26;C08F2/10;C08J3/12;C08F6/00;C08L101/14;B01J20/28 | 主分类号 | B01J20/26 |
| 代理机构 | Lerner, David, Littenberg, Krumholz & Mentlik, LLP | 代理人 | Lerner, David, Littenberg, Krumholz & Mentlik, LLP |
| 主权项 | 1. A method for preparing a super absorbent polymer, comprising the steps of: carrying out a thermal polymerization or a photopolymerization of a monomer composition including a water-soluble ethylene-based unsaturated monomer and a polymerization initiator to form a hydrogel polymer; drying the hydrogel polymer; pulverizing a dried polymer; mixing a fine powder having a particle diameter of 180 μm or less and a polymer having a particle diameter of 300 μm or more among a pulverized polymer; and adding steam to a mixture to carry out a reassembling. | ||
| 地址 | KR | ||