公开(公告)号：US06700020B2

公开(公告)日：2004-03-02

申请号：US10257328

申请日：2002-10-10

申请人： Gunther Pabst ,  Jürgen Kast

发明人： Gunther Pabst ,  Jürgen Kast

IPC分类号： C07C31500

CPC分类号： C07C315/00 ,  Y02P20/582 ,  C07C317/22

摘要： A semicontinuous process is provided for the preparation of 4,4′-dihydroxydiphenyl sulfone, comprising the following steps: (a) reaction of phenol with a sulfonating agent, (b) suspension of the resulting crude product in water heated to at least 40° C., which is free of inert organic solvents and can contain residual amounts of unreacted phenol, and filtration of the product, and (c) recycling of the resulting educt-containing and/or product-containing waste streams into the preparative process, wherein, in carrying out step (b), the crude product and water are used in a weight ratio of 85:15 to 55:45.

摘要翻译： 提供了用于制备4,4'-二羟基二苯砜的半连续方法，其包括以下步骤：（a）苯酚与磺化剂的反应，（b）将所得粗产物在加热至至少40℃的水中悬浮 其不含惰性有机溶剂并且可以含有残留量的未反应苯酚和产物的过滤，和（c）将所得的含有废水和/或含产物的废物流再循环到制备方法中，其中 在进行步骤（b）时，以85:15至55:45的重量比使用粗产物和水。

公开(公告)号：US06881356B2

公开(公告)日：2005-04-19

申请号：US10486208

申请日：2002-08-16

申请人： Gunther Pabst ,  Gerhard Wolf ,  Jürgen Kast ,  Jürgen Werner

发明人： Gunther Pabst ,  Gerhard Wolf ,  Jürgen Kast ,  Jürgen Werner

IPC分类号： C08G8/28 ,  C08L61/14 ,  C14C3/20 ,  C14G1/00 ,  C08G14/02

CPC分类号： C08G8/28 ,  C08L61/14 ,  C14C3/20

摘要： A process for preparing a solution of sulfone-containing tanning materials comprises a) preparing a component A by a1) reacting phenol with concentrated sulfuric acid, with oleum of an SO3 content of from 20 to 65% by weight or with a mixture of sulfuric acid and oleum of an SO3 content of from 20 to 65% by weight, the molar ratio of total sulfuric acid, reckoned as SO3, to phenol being in the range from 0.7:1 to 1.5:1, at from 100 to 180° C. to form a mixture containing phenolsulfonic acid, dihydroxydiphenyl sulfone and sulfuric acid, or mixing the individual components to prepare a corresponding mixture, a2) then condensing said mixture with from 0.25 to 4 mol of urea and with from 0.5 to 4 mol of an aliphatic aldehyde of 1 to 6 carbon atoms per mole of phenol units present at from 40 to 90° C., a3) optionally adding a base to set a pH of from 4 to 5, b) preparing a component B by b1) reacting dihydroxydiphenyl sulfone with from 0.5 to 5 mol of an aliphatic aldehyde of from 1 to 6 carbon atoms and with from 0.4 to 2 mol of sodium sulfite per mole of dihydroxydiphenyl sulfone at from 90 to 180° C., b2) optionally adding an acid to set a pH of from 3.5 to 5.5, c) mixing from 10 to 90% by weight of component A with from 90 to 10% by weight of component B, the sum total of A and B being 100% by weight, and, unless already effected in steps a3) and b2), setting the pH of the mixture to a value in the range from 3.5 to 5.5.

摘要翻译： 制备含砜鞣制材料溶液的方法包括：a）通过a1）使苯酚与浓硫酸反应制备组分A，其中SO 3 SO 3含量的发烟硫酸含量为20-65％ 重量或硫酸和发烟硫酸的混合物，其SO 3 3含量为20至65重量％，总硫酸的摩尔比计为SO 3 N 3 ，苯酚在0.7:1至1.5:1的范围内，在100-180℃，以形成含有苯酚磺酸，二羟基二苯基砜和硫酸的混合物，或混合各组分以制备相应的混合物，a2 ），然后将所述混合物与0.25至4摩尔的尿素和0.5至4摩尔具有1至6个碳原子的脂族醛/摩尔在40至90℃下存在的苯酚单元缩合，a3）任选加入 碱，以使pH为4至5，b）通过使二羟基二苯基砜与0.5至5mol的a 含有1至6个碳原子的脂族醛和0.4至2摩尔亚硫酸钠/摩尔二羟基二苯基砜在90至180℃，b2）任选加入酸以使pH为3.5至5.5，c ）混合10至90重量％的组分A和90至10重量％的组分B，A和B的总和为100重量％，除非在步骤a3）和b2）中已经实现， 将混合物的pH设定在3.5至5.5的范围内。