公开(公告)号：MY150001A

公开(公告)日：2013-11-15

申请号：MYPI20090215

申请日：2007-07-09

Applicant: BASF SE

Inventor： UWE STUEVEN ,  MATTHIAS WEISMANTEL ,  WILFRIED HEIDE ,  MARCO KRUEGER ,  VOLKER SEIDL ,  STEFAN BLEI ,  DENNIS LOESCH ,  RUEDIGER FUNK ,  ANNEMARIE HILLEBRECHT

IPC: C08F20/06

Abstract: A PROCESS FOR PREPARING POSTCROSSLINKED WATER-ABSORBING POLYMER BEADS WITH HIGH ABSORPTION BY POLYMERIZING DROPLETS OF A MONOMER SOLUTION IN A GAS PHASE SURROUNDING THE DROPLETS, WHEREIN THE SOLIDS CONTENT OF THE MONOMER SOLUTION IS AT LEAST 35% BY WEIGHT AND THE POLYMER BEADS HAVE A MEAN DIAMETER OF AT LEAST 150 µm.

公开(公告)号：MY148533A

公开(公告)日：2013-04-30

申请号：MYPI20090216

申请日：2007-07-11

Applicant: BASF SE

Inventor： UWE STUEVEN ,  MATTHIAS WEISMANTEL ,  WILFRIED HEIDE ,  MARCO KRUEGER ,  VOLKER SEIDL ,  STEFAN BLEI ,  DENNIS LOESCH ,  RUEDIGER FUNK ,  ANNEMARIE HILLEBRECHT

IPC: B32B1/00

Abstract: A PROCESS FOR PREPARING WATER-ABSORBING POLYMER BEADS WITH HIGH PERMEABILITY BY POLYMERIZING DROPLETS OF A MONOMER SOLUTION IN A GAS PHASE SURROUNDING THE DROPLETS, WHEREIN THE MONOMER SOLUTION COMPRISES AT LEAST 0.5% BY WEIGHT OF A CROSSLINKER, BASED ON THE MONOMER, THE POLYMERIZATION IN THE DROPLET TAKES PLACE IN HOMOGENEOUS PHASE, AND THE POLYMER BEADS HAVE A MEAN DIAMETER OF AT LEAST 150 ?M.

公开(公告)号：MY148460A

公开(公告)日：2013-04-30

申请号：MYPI20100522

申请日：2008-08-08

Applicant: BASF SE

Inventor： RUEDIGER FUNK ,  WILFRIED HEIDE ,  MATTHIAS WEISMANTEL ,  ULRICH HAMMON ,  KAREN BENNET ANDREA

IPC: C08F20/06

Abstract: THE INVENTION RELATES TO A METHOD FOR PRODUCING WATER-ABSORBENT RESINS, WHEREIN A) ACRYLIC ACID IS PRODUCED AT AN ACRYLIC ACID PRODUCTION SITE, B) THE PRODUCED ACRYLIC ACID IS DISSOLVED IN WATER AT THE ACRYLIC ACID PRODUCTION SITE, THUS AN AQUEOUS ACRYLIC ACID SOLUTION IS OBTAINED, C) THE ACRYLIC ACID SOLUTION IS FED INTO A PIPELINE AT THE ACRYLIC ACID PRODUCTION SITE AND IS TRANSPORTED THROUGH THE PIPELINE TO AN ACRYLIC ACID PROCESSING SITE D) THE AQUEOUS ACRYLIC ACID SOLUTION UNDERGOES A RADICAL POLYMERIZATION AT THE ACRYLIC ACID PROCESSING SITE. SAID METHOD GUARANTEES A SAVE TRANSPORT OF THE HIGHLY REACTIVE ACRYLIC ACID. A THREAT CAUSED BY EARLY POLYMERIZATION, AS WITH PURE ACRYLIC ACID, IS NOT POSSIBLE, AS THE ACRYLIC ACID IS 'DILUTED' DUE TO THE AQUEOUS SOLVENT AND THE SPECIFIC THERMAL CAPACITY OR THE EVAPORATION ENTHALPY OF THE WATER LIMIT THE MAXIMUM TEMPERATURE INCREASE. THE AMOUNT OF POLYMERIZATION INHIBITORS CAN BE REDUCED OR NO POLYMERIZATION INHIBITORS HAVE TO BE USED AT ALL. TEMPERATURE CONTROL OF CONTAINERS, PIPE CONDUITS AND PIPELINES, CARRYING THE AQUEOUS ACRYLIC ACID SOLUTION IS NOT NECESSARY, AS THE SOLIDIFICATION POINT OF THE AQUEOUS ACRYLIC ACID SOLUTION IS LOWER THAN THE ONE OF THE ANHYDROUS ACRYLIC ACID.

公开(公告)号：MY146772A

公开(公告)日：2012-09-28

申请号：MYPI20092485

申请日：2007-12-12

Applicant: BASF SE

Inventor： UWE STUEVEN ,  RUEDIGER FUNK ,  MATTHIAS WEISMANTEL ,  WILFRIED HEIDE ,  MARCO KRUEGER

IPC: C09K3/00

Abstract: A PROCESS FOR PRODUCING WATER-ABSORBING POLYMER PARTICLES BY POLYMERIZING DROPLETS OF A MONOMER SOLUTION IN A GAS PHASE SURROUNDING THE DROPLETS AND POSTCROSSLINKING THE POLYMER PARTICLES, WHEREIN THE POSTCROSSLINKED POLYMER PARTICLES ARE AT LEAST PARTLY COATED.