Title:
【発明の名称】水膨潤可能な親水性ポリマーの製造方法、そのポリマーおよびその使用
Document Type and Number:
Japanese Patent JP2002527547
Kind Code:
A
Abstract:
Water-swellable hydrophilic polymers are prepared by neutralization of the acidic hydrogel having a degree of neutralization of 0-40 mol % to an ultimate degree of neutralization of 60-85 mol % by mixing with a neutralizing agent in a mincer comprising a system of screw, rotating blade, restricted flow zone and breaker plate, whereinthe mincer has a power output of from 1000 to 6000 Wh/m3the hydrogel passes through a zone having-an energy dissipation density of from 400 to 800 W/1 of mixing volumethe average residence time of the hydrogel in the mincer is from 5 to 30 secondsthe breaker plate has an open area of from 20 to 40%.
Inventors:
Joachim Dentor
Norbert Harfeld
Rudolf Shriva
Uwe Steven
Fritz Engelhard
Norbert Harfeld
Rudolf Shriva
Uwe Steven
Fritz Engelhard
Application Number:
JP2000575919A
Publication Date:
August 27, 2002
Filing Date:
September 28, 1999
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
A61F13/15; A61F13/53; A61L15/00; A61L15/60; B01J20/26; B01J20/30; C08F2/01; C08F8/44; C08F220/06; C08F251/00; C08F261/04; C08F283/00; C08F283/02; C08F283/06; C08F291/00; C08J3/12; C09K3/00; (IPC1-7): C08F2/01; A61F13/53; A61L15/60; B01J20/26; B01J20/30; C08F291/00; C08J3/12; C09K3/00
Attorney, Agent or Firm:
Toshio Yano (4 outside)