METHOD OF PREPARING SUPERABSORBENT POLYMER
    3.
    发明公开
    METHOD OF PREPARING SUPERABSORBENT POLYMER 审中-公开
    制备超吸收性聚合物的方法

    公开(公告)号:EP3318596A1

    公开(公告)日:2018-05-09

    申请号:EP16895585.4

    申请日:2016-06-13

    申请人: LG Chem, Ltd.

    摘要: Provided is a method of preparing a superabsorbent polymer which exhibits more improved liquid permeability and absorption rate while maintaining excellent absorption performance. The method of preparing the superabsorbent polymer may include the steps of: performing crosslinking polymerization of water-soluble ethylene-based unsaturated monomers having acidic groups which are at least partially neutralized in the presence of an internal crosslinking agent to form a water-containing gel polymer including a crosslinked polymer; drying, pulverizing, and size-sorting the water-containing gel polymer to form a base polymer powder; performing surface-crosslinking of the base polymer powder using a surface-crosslinking solution including one or more surface-crosslinking agents selected from the group consisting of an alkylene carbonate having 2 to 5 carbon atoms, diol, triol, or polyol containing an alkyl group having 2 to 12 carbon atoms or polyethylene glycol having 2 to 12 carbon atoms, and diepoxy, triepoxy, or polyepoxy containing an alkyl group having 2 to 12 carbon atoms or polyethylene glycol having 2 to 12 carbon atoms, in the presence of first alumina particles; and adding second alumina particles to the surface-crosslinked base polymer powder and then mixing them with each other.

    摘要翻译: 本发明提供一种制备超吸收性聚合物的方法,其在保持优异的吸收性能的同时表现出更高的液体渗透性和吸收速率。 制备超吸收性聚合物的方法可以包括以下步骤:在内部交联剂存在下进行具有酸性基团的水溶性乙烯基不饱和单体的交联聚合,所述酸性基团至少部分被中和以形成含水凝胶聚合物 包括交联聚合物; 干燥,粉碎和尺寸分选含水凝胶聚合物以形成基础聚合物粉末; 使用包含选自具有2至5个碳原子的亚烷基碳酸酯,具有烷基的二醇,三醇或多元醇的一种或多种表面交联剂的表面交联溶液进行基础聚合物粉末的表面交联, 2至12个碳原子的聚乙二醇或具有2至12个碳原子的聚乙二醇以及含有具有2至12个碳原子的烷基的二环氧基,三环氧基或多环氧基或具有2至12个碳原子的聚乙二醇; 和将第二氧化铝颗粒加入到表面交联的基础聚合物粉末中,然后将它们彼此混合。

    SUPERABSORBENT POLYMER
    4.
    发明公开
    SUPERABSORBENT POLYMER 审中-公开
    超吸收聚合物

    公开(公告)号:EP3260485A1

    公开(公告)日:2017-12-27

    申请号:EP16811871.9

    申请日:2016-06-10

    申请人: LG Chem, Ltd.

    摘要: The present invention relates to a super absorbent polymer. In the super absorbent polymer according to the present invention, the content of each of the super absorbent polymer particles having different surface shapes among particles constituting the polymer is optimized, and thus not only an absorbent capacity and an absorbency under load are excellent but also the rewetting phenomenon can be effectively prevented.

    摘要翻译: 本发明涉及一种超吸收性聚合物。 在根据本发明的超吸收性聚合物中,构成聚合物的颗粒中具有不同表面形状的超吸收性聚合物颗粒的含量被优化,因此不仅吸收容量和负载下的吸收性优异,而且 可以有效防止再湿现象。

    SUPERABSORBENT POLYMER HAVING FAST ABSORPTION RATE UNDER LOAD AND PREPARATION METHOD THEREFOR
    10.
    发明公开
    SUPERABSORBENT POLYMER HAVING FAST ABSORPTION RATE UNDER LOAD AND PREPARATION METHOD THEREFOR 审中-公开
    SUPERSAUGFÄHIGESPOLYMER MIT SCHNELLER AUFNAHMEGESCHWINDIGKEIT UNTER LAST UND HERSTELLUNGSVERFAHRENDAFÜR

    公开(公告)号:EP3098245A1

    公开(公告)日:2016-11-30

    申请号:EP15862317.3

    申请日:2015-11-27

    申请人: LG Chem, Ltd.

    摘要: Provided are a superabsorbent polymer and a preparation method thereof. In the superabsorbent polymer according to the present invention, a low-temperature foaming agent are used together with a high-temperature foaming agent to control the size and distribution of internal pores of the superabsorbent polymer, thereby increasing absorption rate under load without reduction in gel strength.

    摘要翻译: 提供一种超吸收性聚合物及其制备方法。 在根据本发明的超吸收性聚合物中,低温发泡剂与高温发泡剂一起使用以控制超吸收性聚合物的内孔的尺寸和分布,从而增加负载下的吸收速率而不降低凝胶 强度。