公开(公告)号：EP2547705A1

公开(公告)日：2013-01-23

申请号：EP11707684.4

申请日：2011-03-14

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  DANIEL, Thomas ,  PARCHANA, Bootsara

IPC: C08F220/06 ,  A61L15/60 ,  C08F6/00 ,  C08J3/24 ,  C08K5/42 ,  C08K5/53

CPC classification number: C08F220/06 ,  A61L15/60 ,  C08F6/008 ,  C08F222/1006 ,  C08J3/245 ,  C08J2333/02 ,  C08K5/0025 ,  C08K5/42 ,  C08L33/02

Abstract: The invention relates to a method for producing water-absorbent polymer particles, wherein at least one inorganic phosphoric acid and/or the salt thereof and at least one organic 2-hydroxy acid and/or the salt thereof are added, wherein the phosphorus in the inorganic phosphoric acid has an oxidation number of less than +V and the organic 2-hydroxy acid does not contain any ethylenically unsaturated groups, and to the water-absorbent polymer particles that can be obtained according to the method according to the invention.

公开(公告)号：EP2547703A1

公开(公告)日：2013-01-23

申请号：EP11706846.0

申请日：2011-03-09

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  DANIEL, Thomas ,  DOBRAWA, Rainer

IPC: C08F2/34 ,  C08F2/10 ,  C08F2/16 ,  A61L15/60

CPC classification number: C08F2/34 ,  A61F2013/530569 ,  A61F2013/530591 ,  A61L15/60 ,  A61L2420/02 ,  C08F2/10 ,  C08F2/16

Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase and flowing the gas cocurrent through the polymerization chamber, which comprises coating the water-absorbing polymer particles with at least one sulfinic acid, sulfonic acid and/or salts thereof.

公开(公告)号：EP2477664A1

公开(公告)日：2012-07-25

申请号：EP10751962.1

申请日：2010-09-14

Applicant: BASF SE

Inventor： ELLIOTT, Mark ,  DANIEL, Thomas ,  HERFERT, Norbert

IPC: A61L15/00 ,  C08K3/22 ,  C08K3/26 ,  C08K5/098 ,  C08K5/30 ,  C08K5/42

CPC classification number: C08K5/098 ,  A61L2400/10 ,  C08K5/0025 ,  C08K5/005 ,  C08L33/02

Abstract: The invention relates to a superabsorber produced by polymerizing a monomer mixture comprising at least one ethylenically unsaturated monomer supporting at least one acid group, wherein at least 0.1% by weight and no more than 20% by weight, relative to the total quantity of ethylenically unsaturated monomers supporting at least one acid group (calculated as free acid), of at least one alkali earth salt (calculated free of water of crystallization) selected from salts of calcium, strontium, or barium is added to the polymer before or during polymerization and/or, if a separate drying step follows the polymerization, before drying. According to the invention, the superabsorber shows improved stability against discoloration when stored at elevated temperatures or elevated humidity.

公开(公告)号：EP2134772A1

公开(公告)日：2009-12-23

申请号：EP08717547.7

申请日：2008-03-10

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  WENDKER, Martin ,  BARTHEL, Holger ,  CHIANG, William G-J

IPC: C08J3/24 ,  C08L101/14

CPC classification number: C08J3/245 ,  C08J2300/14

Abstract: Re-moisturised, surface-crosslinked superabsorbents are produced using a process that comprises the steps of contacting a superabsorbent base polymer with an organic crosslinker and a polyvalent metal salt solution in the presence of an alcohol, heat- treating to produce a surface-crosslinked, dry superabsorbent and re-moisturising the surface-crosslinked dry superabsorbent.

公开(公告)号：EP1846481B1

公开(公告)日：2008-10-08

申请号：EP06707930.1

申请日：2006-01-31

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  MIATUDILA, Ma-ikay Kikama ,  MITCHELL, Michael A.

IPC: C08J3/12 ,  C08J3/075 ,  A61L15/60

CPC classification number: A61L15/60

Abstract: Polyamine-coated superabsorbent polymer particles having a reduced tendency to agglomerate and having improved permeability properties are disclosed. A method of producing the polyamine- coated particles using a polyammonium carbonate also is disclosed.

公开(公告)号：EP3706900A1

公开(公告)日：2020-09-16

申请号：EP18795645.3

申请日：2018-10-31

Applicant: BASF SE

Inventor： HARTNAGEL, Kristine ,  POOMSUWAN, Wanthip ,  HAMILTON, Patrick Neal ,  HERFERT, Norbert ,  DANIEL, Thomas ,  HOELLER, Olaf

IPC: B01J20/26 ,  B01J20/02 ,  B01J20/30 ,  B01J20/32 ,  C08F220/06 ,  A61L15/24

公开(公告)号：EP2445942B2

公开(公告)日：2017-08-16

申请号：EP10726096.0

申请日：2010-06-24

Applicant: BASF SE

Inventor： DANIEL, Thomas ,  BAUDUIN, Christophe ,  HERFERT, Norbert

IPC: C08F220/06 ,  A61L15/60 ,  C08J3/24

CPC classification number: B01J20/321 ,  C08F220/06 ,  C08F222/1006 ,  C08J3/24

公开(公告)号：EP3096803A1

公开(公告)日：2016-11-30

申请号：EP15700301.3

申请日：2015-01-14

Applicant: BASF SE

Inventor： BAUER, Stephan ,  HERFERT, Norbert ,  FREIBERG, Jürgen ,  SCHLIWA, Rudolf ,  POSSEMIERS, Karl ,  BAYER, Robert

IPC: A61L15/60 ,  C08F2/01 ,  C08F6/00 ,  C08L33/02 ,  C08L101/14

CPC classification number: B01J20/267 ,  B01J20/28016 ,  B01J20/3085 ,  C08F2/01 ,  C08F2/34 ,  C08F6/001 ,  C08F6/008 ,  C08L33/02 ,  C08L33/08 ,  C08L101/14 ,  C08F220/06 ,  C08F2222/1026

Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase in a reactor comprising a gas distributor (3), a reaction zone (5) and a fluidized bed (27), the gas leaving the reactor is treated in a condenser column (12) with an aqueous solution, the treated gas leaving the condenser column (12) is recycled at least partly to the fluidized bed (27), wherein the gas leaving the condenser column (12) comprises from 0.05 to 0.3 kg steam per kg dry gas and the steam content of the gas entering the gas distributor (3) is less than 80% of the steam content of the gas leaving the condenser column (12).

公开(公告)号：EP2922879A1

公开(公告)日：2015-09-30

申请号：EP13789302.0

申请日：2013-11-11

Applicant: BASF SE

Inventor： DANIEL, Thomas ,  HERFERT, Norbert ,  BAUER, Stephan ,  BAUMANN, Katrin ,  REINHARD, Birgit ,  FREIBERG, Jürgen ,  SCHLIWA, Rudolf

IPC: C08F6/00 ,  A61L15/22 ,  C08L33/02

CPC classification number: C08F220/06 ,  A61L15/22 ,  A61L15/24 ,  A61L15/42 ,  A61L15/60 ,  B01J20/267 ,  B01J20/28023 ,  B01J20/2805 ,  C08F6/005 ,  C08L33/02 ,  C08L33/08 ,  C08F2222/1013

Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution comprising less than 0.3% by weight of persulfate and at least 0.05% by weight of azo initiator and thermal aftertreatment of the formed polymer particles at less than 100° C. in a fluidized bed for 60 to 300 minutes.

Abstract translation: 本发明涉及一种用于通过在更少（重量）所形成的聚合物颗粒的偶氮引发剂和热后处理的聚合单体溶液按重量计的过硫酸盐和0.05％以上的，其包含小于0.3％的微滴生成吸水性聚合物颗粒 低于100℃在流化床中进行60〜300分钟。

公开(公告)号：EP2473536B1

公开(公告)日：2014-11-12

申请号：EP10749643.2

申请日：2010-09-02

Applicant: BASF SE

Inventor： DOBRAWA, Rainer ,  DANIEL, Thomas ,  STUEVEN,Uwe ,  KRÜGER, Marco ,  LOPEZ VILLANUEVA, Francisco Javier ,  HERFERT, Norbert ,  MITCHELL, Michael, A. ,  FLORE, Karin ,  BLEI, Stefan

IPC: C08F2/10

CPC classification number: B01J20/26 ,  A61L15/60 ,  B01J20/264 ,  B01J20/3085 ,  C08F2/10 ,  C08F220/06 ,  C08F222/1006 ,  Y10T428/249958 ,  Y10T428/249981 ,  Y10T428/254 ,  Y10T428/2982 ,  Y10T428/31935