公开(公告)号：US20040186229A1

公开(公告)日：2004-09-23

申请号：US10765152

申请日：2004-01-28

Applicant: BASF Aktiengesellschaft

Inventor： Wilfried Heide ,  Stefan Wickel ,  Thomas Daniel ,  Joachim Nilges ,  Jurgen Hofmann

IPC: C08L033/00

CPC classification number: C08F2/01 ,  B01J14/00 ,  B01J19/0013 ,  B01J19/20 ,  B01J2219/00033 ,  B01J2219/00063 ,  B01J2219/00085 ,  B01J2219/00094 ,  B01J2219/00123 ,  B01J2219/00128 ,  B01J2219/00162 ,  B01J2219/00166 ,  C08F2/10

Abstract: A process for continuous production of crosslinked fine particles of polymer gel by copolymerizing a) water-soluble monoethylenically unsaturated monomers, b) from 0.001 to 5 mol % based on the monomers (a) of monomers containing at least two ethylenically unsaturated double bonds, and c) from 0 to 20 mol % based on the monomers (a) of water-insoluble monoethylenically unsaturated monomers in from 20 to 80% by weight aqueous solution in the presence of an initiator at from 0 to 140null C. by feeding the aqueous solution of the monomers together with the initiator and an inert gas continuously into a mixing kneader having at least two axially parallel rotating shafts equipped with a plurality of kneading and transporting elements which convey the substances introduced at the upstream end of the mixing kneader in the axial direction toward the downstream end of the mixer, comprises the fraction of heat being removed by evaporation of water from the reaction mixture being not less than 5% of the heat of reaction and the fraction of heat being removed by product discharge being not less than 25% of the heat of reaction and the rest of the heat being removed via cooling of the reactor walls.

Abstract translation: 一种通过共聚a）水溶性单烯属不饱和单体，b）相对于含有至少两个烯键式不饱和双键的单体（a）为0.001〜5摩尔％的连续制造交联微粒的方法，以及 c）0至20摩尔％，基于单体（a）的水不溶性单烯属不饱和单体，在20至80重量％的水溶液中，在0-140℃的引发剂存在下，通过加入水 将单体与引发剂和惰性气体的溶液连续混合到具有至少两个轴向平行的旋转轴的混合捏合机中，所述两个轴向平行的旋转轴装备有多个捏合和输送元件，其将在混合捏合机的上游端引入的物质沿轴向 朝向混合器下游端的方向包括通过蒸发反应混合物中的水而除去的热分数不小于5％ 反应热和通过产物排放除去的热分数不低于反应热的25％，剩余的热量通过反应器壁的冷却除去。