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

公开(公告)号：EP2504368B1

公开(公告)日：2014-01-08

申请号：EP10776704.8

申请日：2010-11-12

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  DANIEL, Thomas

IPC: C08F220/06 ,  C08J3/12 ,  C08F2/44

CPC classification number: C08F220/06 ,  A61L15/24 ,  A61L15/56 ,  C08F2/10 ,  C08F2/38 ,  C08J3/12 ,  C08J3/126 ,  C08J2300/102

公开(公告)号：EP2580256A2

公开(公告)日：2013-04-17

申请号：EP11726118.0

申请日：2011-06-10

Applicant: BASF SE

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

IPC: C08F220/06 ,  C08F2/44 ,  C08K5/00

CPC classification number: C08F220/06 ,  C08F2/44 ,  C08F222/1006 ,  C08K5/0025 ,  C08K5/0041

Abstract: The invention relates to water-absorbing polymer particles with improved colour stability and to processes for preparing them, the water-absorbing polymer particles comprising at least one optical brightening agent.

公开(公告)号：EP2473536A1

公开(公告)日：2012-07-11

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

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, wherein the temperature of the gas leaving the polymerization chamber is 130°C or less, the gas velocity inside the polymerization chamber is at least 0.5 m/s, and the droplets are generated by using a droplet plate having a multitude of bores.

公开(公告)号：EP2440512A2

公开(公告)日：2012-04-18

申请号：EP10724417.0

申请日：2010-05-31

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  HAMMON, Ulrich ,  WÜSTEFELD, Renate

IPC: C07C51/215

CPC classification number: C07C51/47 ,  C07C51/50 ,  C08K5/13 ,  C07C57/04

Abstract: The invention relates to a method for the restabilization of (meth)acrylic monomers, whereby phenothiazine is removed from phenothiazine-containing (meth)acrylic monomers by adsorption on activated carbon and optionally subsequent addition of a moderately effective polymerization inhibitor.

公开(公告)号：EP2235093A2

公开(公告)日：2010-10-06

申请号：EP08863486.0

申请日：2008-12-16

Applicant: BASF SE

Inventor： HERFERT, Norbert ,  STUEVEN, Uwe ,  CHIANG, William, G-J

IPC: C08J3/24 ,  A61L15/60 ,  C08F8/44 ,  C08L101/14

CPC classification number: C08J3/245 ,  A61L15/60 ,  C08J2300/14 ,  C08K5/0025 ,  C08K5/0091

Abstract: Surface-crosslinked superabsorbents are produced using a process that comprises the steps of contacting a superabsorbent base polymer with a polyvalent metal salt solution produced by dissolving at least two different polyvalent metal salts, at least one of which comprises a chelate-forming anion, and heat-treating to produce a surface-crosslinked superabsorbent.

公开(公告)号：EP3829511A1

公开(公告)日：2021-06-09

申请号：EP19749613.6

申请日：2019-07-23

Applicant: BASF SE

Inventor： GE, Hui ,  HERFERT, Norbert ,  ELLIOTT, Mark ,  MITCHELL, Michael ,  DUAN, Li Guo

IPC: A61F13/534 ,  A61L15/42 ,  A61L15/60 ,  C08F220/06