公开(公告)号：DE59600721D1

公开(公告)日：1998-12-03

申请号：DE59600721

申请日：1996-01-23

Applicant: BASF AG

Inventor： HAEHNLE HANS-JOACHIM DR ,  NEUFELD ECKHARD ,  SCHORNICK GUNNAR DR ,  MINGES ROLAND DR ,  ANSTOCK THOMAS DR ,  TROPSCH JUERGEN DR ,  KRAUSS HANS-JUERGEN

IPC: B01D21/01 ,  B01J19/00 ,  B01J19/24 ,  C02F1/56 ,  C08F2/00 ,  C08F2/10 ,  C08F2/16 ,  C08F4/04 ,  C08F20/00

Abstract: Prodn. of high mol. polymers involves: (a) polymerising water-soluble, mono-ethylenically unsatd. monomers and opt. crosslinkers contg. non-conjugated ethylenically unsatd. double bonds. in the molecule and opt. water-insol. monoethylenically unsatd. monomers in aq. soln. in the presence of polymerisation initiators in a tubular reactor; and (b) forcing the gelatinous reaction mixt. from the reactor with an inert gas. The reactor has: (i) a conical taper at one end, so the ratio of the dia. (D1) of the reactor to the dia. (D2) at the end of the cone is (2-25); and (ii) the angle between D1 at the beginning of the cone and the inner wall of the cone of more than 45 and less than 90 degrees .