Method for Producing Water-Absorbing Polymers
    2.
    发明申请
    Method for Producing Water-Absorbing Polymers 有权
    吸水聚合物的制造方法

    公开(公告)号:US20080214750A1

    公开(公告)日:2008-09-04

    申请号:US11666962

    申请日:2005-11-16

    CPC classification number: C08F2/04 C08F220/06 C08F220/40 C08F222/1006

    Abstract: The invention relates to processes for preparing water absorbing polymers by polymerization of a monomer solution comprising allyl acrylate and/or allyl alcohol, the solution comprising not more than 0.002% by weight of allyl acrylate and/or allyl alcohol, based on acrylic acid, to aqueous monomer solutions for producing water absorbing polymers, to water absorbing polymers, to processes for producing hygiene articles and also to hygiene articles.

    Abstract translation: 本发明涉及通过聚合包含丙烯酸烯丙酯和/或烯丙醇的单体溶液来制备吸水聚合物的方法,该溶液包含不超过0.002%(重量)丙烯酸烯丙酯和/或烯丙醇(基于丙烯酸)至 用于生产吸水聚合物的单体水溶液,吸水聚合物,生产卫生用品的方法以及卫生用品。

    Polymetal oxide materials
    3.
    发明授权
    Polymetal oxide materials 失效
    多金属氧化物材料

    公开(公告)号:US5686373A

    公开(公告)日:1997-11-11

    申请号:US392322

    申请日:1995-02-22

    Abstract: Polymetal oxide materials of the general formula I �A!.sub.p �B!.sub.q (I), where ##STR1## X.sup.1 is W, Nb, Ta, Cr and/or Ce, X.sup.2 is Cu, Ni, Co, Fe, Mn and/or Zn, X.sup.3 is Sb and/or Bi, X.sup.4 is Li, Na, K, Rb, Cs and/or H, X.sup.5 is Mg, Ca, Sr and/or Ba, X.sup.6 is Si, Al, Ti and/or Zr, X.sup.7 is Mo, W, V, Nb and/or Ta, a is from 1 to 8, b is from 0.2 to 5, c is from 0 to 23, d is from 0 to 50, e is from 0 to 2, f is from 0 to 5, g is from 0 to 50, h is from 4 to 30, i is from 0 to 20, x and y are each a number which is determined by the valency and frequency of the elements other than oxygen in I and p and q are non-zero numbers whose ratio p/q is from 160:1 to 1:1, and their use as catalysts.

    Abstract translation: 通式I [A] p [B] q(I)的多金属氧化物材料,其中A为MO12VaX1bX2cX3dX4eX5fX6gOx(Co相),B为X712CuhHiOy(关键相),X1为W,Nb,Ta,Cr和/或Ce ,X2是Cu,Ni,Co,Fe,Mn和/或Zn,X3是Sb和/或Bi,X4是Li,Na,K,Rb,Cs和/或H,X5是Mg,Ca,Sr和/ 或Ba,X 6为Si,Al,Ti和/或Zr,X 7为Mo,W,V,Nb和/或Ta,a为1〜8,b为0.2〜5,c为0〜23, d为0〜50,e为0〜2,f为0〜5,g为0〜50,h为4〜30,i为0〜20,x和y分别为 由I中除氧之外的元素的价态和频率确定,p和q是比值p / q为160:1至1:1的非零数,并且它们用作催化剂。

    Method for preventing, removing or reducing deposits in apparatus parts during the esterification of acrylic or methacrylic acids
    6.
    发明授权
    Method for preventing, removing or reducing deposits in apparatus parts during the esterification of acrylic or methacrylic acids 有权
    在丙烯酸​​或甲基丙烯酸酯化过程中防止,除去或减少设备部件沉积物的方法

    公开(公告)号:US06469201B1

    公开(公告)日:2002-10-22

    申请号:US09147836

    申请日:1999-03-17

    CPC classification number: C07C67/08 C07C69/54

    Abstract: In the preparation of esters of acrylic or methacrylic acid by esterification with alcohols, the interfering deposits formed on the apparatus parts by relatively high molecular weight by-products can be avoided, removed or lessened by allowing a liquid partly or wholly consisting of the alcohol used for the esterification to act on the deposits, fouled apparatus parts or on the surfaces of the apparatus parts on which deposits are easily formed, with preference being given to wetting the deposits or surfaces using suitable nozzles or cleaning sprayers.

    Abstract translation: 在通过与醇酯化制备丙烯酸或甲基丙烯酸的酯时,通过使部分或全部由所用醇组成的液体可以避免,去除或减少由相对高分子量副产物在装置部件上形成的干扰沉积物 为了酯化作用于沉积物,污染的设备部件或易于形成沉积物的设备部件的表面上,优选使用合适的喷嘴或清洁喷雾器润湿沉积物或表面。

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