Water-swellable hydrophilic polymers
    2.
    发明授权
    Water-swellable hydrophilic polymers 失效
    水溶胀性亲水聚合物

    公开(公告)号:US5594083A

    公开(公告)日:1997-01-14

    申请号:US408534

    申请日:1995-03-22

    摘要: Water-swellable hydrophilic polymers which contain polymers prepared by free radical (co)polymerization of one or more hydrophilic monomers of the formula I ##STR1## wherein R.sup.1 is hydrogen, methyl or ethyl,R.sup.2 is the group --COOR.sup.4, the sulphonyl group, the phosphonyl group, the phosphonyl group esterified by (C.sub.1 -C.sub.4)-alkanol or a group of the formula ##STR2## R.sup.3 is hydrogen, methyl, ethyl or the carboxyl group, R.sup.4 is hydrogen, amino or hydroxy-(C.sub.1 -C.sub.4)-alkyl andR.sup.5 is the sulphonyl group, the phosphonyl group or the carboxyl group, or grafting (co)polymerization of one or more hydrophilic monomers of the formula I onto a grafting base, using a free radical initiator which forms three or more free radical sites per molecule.

    摘要翻译: 水溶胀性亲水性聚合物,其含有通过一种或多种式I的亲水性单体(I)的自由基(共)聚合制备的聚合物,其中R 1是氢,甲基或乙基,R 2是基团-COOR 4,磺酰基 (C 1 -C 4) - 烷醇酯化的膦酰基或式(R 3)的基团是氢,甲基,乙基或羧基,R 4是氢,氨基或羟基 - (C 1 -C 4) C4) - 烷基,R5是磺酰基,膦酰基或羧基,或者将一种或多种式I的亲水性单体接枝(共)聚合到接枝基上,使用形成三个或更多个的自由基引发剂 每个分子的自由基位点。

    Water-swellable hydrophilic polymers
    6.
    发明授权
    Water-swellable hydrophilic polymers 失效
    水溶胀性亲水聚合物

    公开(公告)号:US5684104A

    公开(公告)日:1997-11-04

    申请号:US687005

    申请日:1996-07-18

    摘要: Method for avoiding network defects due to unwanted secondary reactions during the polymerization in water-swellable hydrophilic polymers which contain polymers prepared by free radical (co)polymerization of one or more hydrophilic monomers of the formula I ##STR1## wherein R.sup.1 is hydrogen, methyl or ethyl, R.sup.2 is the group --COOR.sup.4, the sulphonyl group, the phosphonyl group, the phosphonyl group-esterified by (C.sub.1 -C.sub.4)-alkanol or a group of the formula ##STR2## R.sup.3 is hydrogen, methyl, ethyl or the carboxyl group, R.sup.4 is hydrogen, amino or hydroxy-(C.sub.1 -C.sub.4)-alkyl and R.sup.5 is the sulphonyl group, the phosphonyl group or the carboxyl group, or grafting (co)polymerization of one or more hydrophilic monomers of the formula I onto a grafting base, using a free radical initiator which forms three or more free radical sites per molecule.

    摘要翻译: 在水溶胀性亲水性聚合物中避免由于在聚合期间不期望的二次反应引起的网络缺陷的方法,其含有通过一种或多种式I的亲水性单体的自由基(共)聚合制备的聚合物,其中R 1是氢,甲基或 乙基,R 2为-COOR 4基团,磺酰基,膦酰基,被(C 1 -C 4) - 烷醇酯化的膦酰基或下式的基团是氢,甲基,乙基或羧基 ,R4是氢,氨基或羟基 - (C1-C4) - 烷基,R5是磺酰基,膦酰基或羧基,或一种或多种式I的亲水性单体接枝(共)聚合到接枝上 碱,使用每分子形成三个或更多个自由基位点的自由基引发剂。

    Process for crosslinking hydrogels with bis- and poly-2- oxazolidinones
    9.
    发明授权
    Process for crosslinking hydrogels with bis- and poly-2- oxazolidinones 有权
    用双 - 和多 - 2-恶唑烷酮交联水凝胶的方法

    公开(公告)号:US06472478B1

    公开(公告)日:2002-10-29

    申请号:US09601349

    申请日:2000-08-18

    IPC分类号: C08F830

    摘要: The invention relates to a process for the gel or surface postcrosslinking of water-absorbing polymers in which the polymers are treated with a surface postcrosslinking solution and during or after the treatment are postcrosslinked and dried by means of an increase in temperature, the crosslinker being a compound of the formula in which R1 and R2 independently of one another are H, hydroxyl, phenyl or C1-C6-alkyl, R3 is hydrogen, C1-C12-alkyl, C1-C12-alkenyl or C6-C12-aryl and R4 and R5 independently of one another are C1-C12-alkyl, C1-C12-alkenyl, C6-C12-aryl, hydroxyl, C1-C12-alkoxy or hydrogen, dissolved in an inert solvent, to water-absorbing polymers which can be obtained by said process, and to their use in hygiene articles, packaging materials and nonwovens.

    摘要翻译: 本发明涉及一种吸水聚合物的凝胶或表面后交联方法,其中聚合物用表面后交联溶液处理,并且在处理之间或之后,通过温度升高进行后交联和干燥,交联剂为 R 1和R 2彼此独立地是H,羟基,苯基或C 1 -C 6烷基的化合物,R 3是氢,C 1 -C 12 - 烷基,C 1 -C 12 - 烯基或C 6 -C 12 - 芳基,R 4和R 5 彼此独立地是溶解在惰性溶剂中的C 1 -C 12烷基,C 1 -C 12 - 烯基,C 6 -C 12 - 芳基,羟基,C 1 -C 12 - 烷氧基或氢,可以通过所述 过程,以及它们在卫生用品,包装材料和无纺布中的应用。