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1.发明公开VERFAHREN ZUR HERSTELLUNG FARBSTABILER WASSERABSORBIERENDER POLYMERPARTIKEL MIT NIEDRIGEN NEUTRALISATIONSGRAD 有权方法用于生产具有中和的低度的颜色稳定吸水聚合物颗粒
公开(公告)号：EP2074153A1
公开(公告)日：2009-07-01
申请号：EP07820241.3
申请日：2007-09-17
Applicant: BASF SE
Inventor： FUNK, Rüdiger , BRAIG,Volker
CPC classification number: C08F220/06 , A61L15/60 , C08F6/10 , C08F222/1006 , F26B17/04 , F26B21/06 , C08L33/02
Abstract: The invention relates to a process for preparing water-absorbing polymer particles by polymerizing a monomer solution comprising at least one ethylenically unsaturated, acid-bearing monomer which has been neutralized to an extent of less than 55 mol%, and drying the resulting polymer gel by means of a heated gas stream, wherein the drying is carried out in at least two temperature zones.
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2.发明授权VERFAHREN ZUR HERSTELLUNG FARBSTABILER WASSERABSORBIERENDER POLYMERPARTIKEL MIT NIEDRIGEN NEUTRALISATIONSGRAD 有权方法用于生产具有中和的低度的颜色稳定吸水聚合物颗粒
公开(公告)号：EP2074153B1
公开(公告)日：2015-09-09
申请号：EP07820241.3
申请日：2007-09-17
Applicant: BASF SE
Inventor： FUNK, Rüdiger , BRAIG,Volker
IPC: C08F6/10 , A61L15/22 , C08F20/06 , F26B17/04 , F26B21/06 , C08J3/12 , A61L15/60 , C08F220/06 , C08F222/10 , C08L33/02
CPC classification number: C08F220/06 , A61L15/60 , C08F6/10 , C08F222/1006 , F26B17/04 , F26B21/06 , C08L33/02
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