公开(公告)号：EP2828305A1

公开(公告)日：2015-01-28

申请号：EP13712507.6

申请日：2013-03-14

申请人： Evonik Corporation

发明人： NAUMANN, Matthias ,  WOOTEN IV, James S.

IPC分类号： C08F220/06 ,  A61L15/60

CPC分类号： C08F220/06 ,  C08F220/38

摘要： The invention relates to a superabsorbent copolymer comprising a reaction product of a reactive optical brightener comonomer. In another embodiment, the superabsorbent copolymer comprises a reaction product of a first monomer and a reactive optical brightener comonomer. The reactive optical brightener comonomer may be selected from various pyrene optical brighteners listed herein. The invention also relates to superabsorbent copolymer having from about 0.1 to 10,000 ppm of a reactive optical brightener comonomer based on the superabsorbent copolymer.

公开(公告)号：EP2797972A1

公开(公告)日：2014-11-05

申请号：EP12795801.5

申请日：2012-12-03

申请人： Evonik Corporation

发明人： NAUMANN, Matthias ,  SCHUBERT, Frank ,  LOICK, Christoph ,  MCINTOSH, Stanley A

IPC分类号： C08F220/06 ,  A61L15/60

CPC分类号： B01J20/261 ,  A61L15/60 ,  C07D301/00 ,  C07D303/36 ,  C08F220/06 ,  C08F220/32

摘要： The present invention further relates to a process to make a superabsorbent polymer comprising the steps of a) preparing a neutralized monomer solution comprising a polymerizable monomer selected from unsaturated acid groups-containing monomers, ethylenically unsaturated carboxylic acid anhydride, salts, or derivatives thereof and a caustic agent selection from an alkali agent, wherein the polymerizable monomer is neutralized to from about 50mol% to about 85mol%; b) forming a crosslinker monomer mixture by adding an internal crosslinker composition to the neutralized monomer solution wherein the internal crosslinking composition is the reaction product of a stoichiometric excess of amine with a glycidyl compound, wherein the internal crosslinker composition has a residual amount of glycidyl compounds of less than about 500ppm based on the mass of the internal crosslinker composition; and c) polymerizing the crosslinker monomer mixture to make a superabsorbent polymer.

公开(公告)号：EP2797972B1

公开(公告)日：2016-09-21

申请号：EP12795801.5

申请日：2012-12-03

申请人： Evonik Corporation

发明人： NAUMANN, Matthias ,  SCHUBERT, Frank ,  LOICK, Christoph ,  MCINTOSH, Stanley A

IPC分类号： C08F220/06 ,  A61L15/60

CPC分类号： B01J20/261 ,  A61L15/60 ,  C07D301/00 ,  C07D303/36 ,  C08F220/06 ,  C08F220/32