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    Superabsorbent acrylic powders having low residual monomer content
    2.
    发明授权
    Superabsorbent acrylic powders having low residual monomer content 失效
    具有低残留单体含量的超吸收性丙烯酸粉末

    公开(公告)号：US5442014A

    公开(公告)日：1995-08-15

    申请号：US304841

    申请日：1994-09-13

    申请人： Shu R. Rebre ,  Christian Collette ,  Sandrine Denie

    发明人： Shu R. Rebre ,  Christian Collette ,  Sandrine Denie

    IPC分类号： A61L15/60 ,  C08F2/20 ,  C08F2/32 ,  C08F6/00 ,  C08F6/06 ,  C08F6/10 ,  C08F20/06 ,  C08F120/04 ,  C08F120/06 ,  C08F8/42

    CPC分类号： C08F20/06 ,  A61L15/60 ,  C08F6/006

    摘要： Particulates of a superabsorbent partially, neutralized acrylic polymer, e.g., polyacrylic acid, having a mean particle size ranging from 100 to 500 .mu.m, essentially monodisperse and essentially devoid of fines having a particle size of less than 100 .mu.m, having a nonuniformly surfaced spheroidal particle morphology and containing less than 50 ppm of residual monomer, well suited for a variety of hygienic applications, are prepared by (i) polymerizing a suspension of an acrylic monomer charge I in an organic medium and producing a suspension of acrylic polymer gel particles, (ii) next absorbing a second acrylic monomer charge II into the gel particles, (iii) polymerizing in the gel particles the second acrylic monomer charge II, (iv) azeotropically dehydrating the acrylic polymer particulates thus obtained, (v) then treating the dehydrated particulates with hydrogen peroxide, and (vi) drying the superabsorbent particulates thus treated.

    摘要翻译： 超吸收剂部分中和的丙烯酸聚合物（例如聚丙烯酸）的颗粒，其平均粒度范围为100-500μm，基本上是单分散的，基本上没有粒度小于100μm的细粒，具有不均匀的表面 通过（i）在有机介质中聚合丙烯酸单体电荷I的悬浮液并制备丙烯酸聚合物凝胶颗粒的悬浮液来制备非常适合各种卫生应用的球形颗粒形态并含有少于50ppm的残余单体 ，（ii）接着将第二丙烯酸类单体电荷II吸收到凝胶颗粒中，（iii）在凝胶颗粒中聚合第二丙烯酸类单体电荷II，（iv）使由此获得的丙烯酸类聚合物微粒共沸脱水，（v）然后处理 用过氧化氢脱水的颗粒，和（vi）干燥如此处理的超吸收颗粒。

    Superabsorbent acrylic powders prepared via improved suspension polymerization
    6.
    发明授权
    Superabsorbent acrylic powders prepared via improved suspension polymerization 失效
    通过改进的悬浮聚合制备超吸收性丙烯酸粉末

    公开(公告)号：US5408006A

    公开(公告)日：1995-04-18

    申请号：US104756

    申请日：1993-08-12

    申请人： Shu R. Rebre ,  Christian Collette ,  Thierry Guerin

    发明人： Shu R. Rebre ,  Christian Collette ,  Thierry Guerin

    IPC分类号： A61L15/60 ,  C08F2/18 ,  C08F2/32 ,  C08F120/00 ,  C08F120/06 ,  G08F265/02

    CPC分类号： C08F2/32 ,  A61L15/60

    摘要： Particulates of a superabsorbent polymer, e.g., an acrylic polymer such as polyacrylic acid, well suited for a variety of hygienic applications, are prepared by (i) suspending an aqueous solution of a water-soluble monomer charge I in a hydrocarbon medium by means of a polymerizable surfactant having the general formula:R.sub.1 --O--(CH.sub.2 --CH.sub.2 --O).sub.n --R.sub.2wherein R.sub.1 is a hydrocarbon having at least 9 carbon atoms, R.sub.2 is an acryloyl, methacryloyl or maleoyl radical, and the degree of condensation n in respect of the ethylene oxide ranges from 30 to 70, (ii) polymerizing the suspension thus formed, producing a suspension of polymer gel particles and converting the surfactant to effectively remove same from the medium of polymerization, (iii) next absorbing a second monomer charge II into such gel particles, and (iv) polymerizing in the gel particles the second monomer charge II.

    摘要翻译： 通过（i）通过（i）将水溶性单体电荷I的水溶液悬浮在烃介质中，通过以下方法制备超吸收聚合物，例如丙烯酸聚合物如聚丙烯酸，例如聚丙烯酸，其适用于各种卫生应用， 具有以下通式的可聚合表面活性剂：R1-O-（CH2-CH2-O）n-R2其中R1是具有至少9个碳原子的烃，R2是丙烯酰基，甲基丙烯酰基或马来酰基，缩合度n 对于环氧乙烷的范围为30至70，（ii）使由此形成的悬浮液聚合，产生聚合物凝胶颗粒的悬浮液并转化表面活性剂以有效地从聚合介质中除去，（iii）接下来吸收第二单体 将电荷II转化成这样的凝胶颗粒，和（iv）在凝胶颗粒中聚合第二单体电荷II。

    Preparation of rapidly dissolving/absorbing powders of hydrophilic/super absorbent (CO)polymers
    8.
    发明授权
    Preparation of rapidly dissolving/absorbing powders of hydrophilic/super absorbent (CO)polymers 失效
    亲水/超吸收（CO）聚合物快速溶解/吸收粉末的制备

    公开(公告)号：US5994419A

    公开(公告)日：1999-11-30

    申请号：US970608

    申请日：1997-11-14

    申请人： Christian Collette ,  Manuel Hidalgo ,  Jean-Marc Corpart ,  Andre Kowalik ,  Paul Mallo

    发明人： Christian Collette ,  Manuel Hidalgo ,  Jean-Marc Corpart ,  Andre Kowalik ,  Paul Mallo

    IPC分类号： C08F2/00 ,  C08F2/18 ,  C08F2/32 ,  C08F20/06 ,  C08F20/56 ,  C08J9/28

    CPC分类号： C08F2/32

    摘要： Rapidly dissolving/absorbing free-flowing powders of hydrophilic/superabsorbent (co)polymers, having irregular nonspherical morphology and a particle size distribution ranging from 100 .mu.m to 800 .mu.m, are prepared by (a) phase inversion (co)polymerizing stirred admixture of (i) a hydrocarbonic solution of at least one surfactant having an HBL ranging from 8 to 12 and (ii) an aqueous solution of at least one hydrophilic unsaturated monomer, in the presence of an effective amount of a radical polymerization initiator and at a predetermined temperature of (co)polymerization, (b) next introducing into the medium of (co)polymerization, after (co)polymerization of the at least one hydrophilic unsaturated monomer, a second aqueous solution of at least one hydrophilic unsaturated monomer, (c) then (co)polymerizing the second aqueous solution, and (d) thence extracting the hydrocarbonic phase and water from the resulting (co)polymerizate and drying same, with the proviso (e) that the second aqueous monomer solution is introduced at a temperature of about the predetermined temperature of (co)polymerization and the volumetric ratio of aqueous phase to hydrocarbonic phase ranges from 0.6 to 1.2.

    摘要翻译： 通过（a）相转化（共）聚合搅拌的混合物制备具有不规则非球形形态和100μm至800μm的粒度分布的亲水/超吸收（共）聚合物的快速溶解/吸收的自由流动粉末 （i）至少一种具有8-12的HBL的表面活性剂的烃溶液，和（ii）至少一种亲水性不饱和单体的水溶液，在有效量的自由基聚合引发剂存在下，和 （共）聚合的预定温度，（b）在至少一种亲水性不饱和单体（第二种）亲水性不饱和单体的第二水溶液（c）聚合后，再次引入（共）聚合的介质中 然后（共）聚合第二水溶液，和（d）从所得（共）聚合物中提取烃相和水并干燥，条件是（e）第二个 在约（共）聚合的预定温度和水相与烃相的体积比范围为0.6至1.2的温度下引入高分子单体溶液。