Method for the secondary crosslinking of hydrogels with bicyclic amide acetals
    78.
    发明授权
    Method for the secondary crosslinking of hydrogels with bicyclic amide acetals 失效
    水凝胶与双环酰胺缩醛二次交联的方法

    公开(公告)号:US07754822B2

    公开(公告)日:2010-07-13

    申请号:US10565050

    申请日:2004-07-07

    CPC classification number: C08J3/245 C08F8/30 C08J2300/14 Y10S493/96 C08F20/00

    Abstract: A process for postcrosslinking a water-absorbing polymer comprises said polymer being treated with a postcrosslinker and, during or after said treating, being postcrosslinked and dried by temperature elevation, said postcrosslinker being a compound of the formula I where R1, R2, R3, R4, R5, R6, R7, R8 and R9 are each independently hydrogen, C1-C12-alkyl, C2-C12-alkenyl or C6-C12-aryl, wherein C1-C12-alkyl, C2-C12-alkenyl or C6-C12-aryl may be halogen substituted. The liquid-absorbing polymers are useful in hygiene articles and packaging materials.

    Abstract translation: 用于后吸附聚合物的方法包括用后交联剂处理的所述聚合物,并且在所述处理期间或之后,通过温度升高进行后交联和干燥,所述后交联剂是式I的化合物,其中R 1,R 2,R 3,R 4 ,R 5,R 6,R 7,R 8和R 9各自独立地为氢,C 1 -C 12 - 烷基,C 2 -C 12 - 烯基或C 6 -C 12 - 芳基,其中C 1 -C 12 - 烷基,C 2 -C 12 - 烯基或C 6 -C 12 - 芳基可以是卤素取代的。 液体吸收聚合物可用于卫生制品和包装材料。

    Crosslinking agent based on linear hydroxypolyallyl ether
    79.
    发明授权
    Crosslinking agent based on linear hydroxypolyallyl ether 有权
    基于线性羟基聚烯丙基醚的交联剂

    公开(公告)号:US07732646B2

    公开(公告)日:2010-06-08

    申请号:US11025976

    申请日:2005-01-03

    CPC classification number: C07C43/178 A61L15/60 C08F220/04

    Abstract: An allyl type crosslinking agent for use in production of a super water-absorbent polymer comprising a polymerizable compound having a carbon-carbon double bond or a salt thereof. The crosslinking agent comprises a linear hydroxypolyallyl ether having at least one hydroxyl group and at least two allyl groups obtained by allyletherification of hydroxyl groups in a linear polyol compound selected from the group consisting of erythritol, xylitol and sorbitol. This allyl type crosslinking agent is highly soluble in an aqueous solvent, and can give an excellent super water-absorbent polymer, which cannot be obtained in the prior arts, having high levels of both of water absorptivity under atmospheric pressure and water absorptivity under pressurized conditions.

    Abstract translation: 一种用于生产含有碳 - 碳双键的聚合性化合物或其盐的超级吸水性聚合物的烯丙基型交联剂。 交联剂包含具有至少一个羟基的直链羟基聚烯丙基醚和至少两个通过选自赤藓糖醇,木糖醇和山梨糖醇的直链多元醇化合物中羟基进行烯丙基化获得的烯丙基。 这种烯丙基型交联剂在水性溶剂中高度溶解,并且可以得到在现有技术中无法获得的极好的超吸水性聚合物,其具有在大气压下的高吸水率和加压条件下的吸水率 。

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