公开(公告)号：DE3585175D1

公开(公告)日：1992-02-27

申请号：DE3585175

申请日：1985-06-13

Applicant: BASF AG

Inventor： MARTISCHIUS FRANZ-DIETER DIPL ,  KARAU DIETER DIPL ING ,  ARNOLD WERNER DIPL ING ,  BARTHOLD KLAUS DR

IPC: C09K8/588 ,  E21B43/22

Abstract: The solns. are subjected to turbulent straaming conditions in a dynamic liq.-dispersing or feeding appts., residence time in the appts. being less than about 20 seconds and the pumping energy applied being 1-15 W per 1 soln. throughput. Appts. is single or multi-stage centrifugal or lateral channel pump. Soln. is subsequentlybseut subjected to additional shearing in a static mixer. SOln. or part thereof is recirculated and post-treated several times in a centrifugal or lateral channel pump. Soln. is of acrylamide-Na acrylate based copolymer, partic. of ave. mol. wt. 1x10 power 6-40x10 power 6, esp. 5x10 power 6-20x10 power 6, of or partially saponified polyacrylamide.