| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2333-02 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-245
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L15-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-001
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-28011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L15-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-01 |
| filingDate |
2015-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_93dc190649ca5887ada0f130ea58a853
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e56b6907f809adebd7cb0c2823dad21f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1046bf3b29894b26306de309434ff731
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_65591a9c5b2b301a33e9d97327f4a4e6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c4926aabd3d9a518213b0402fa5de65e |
| publicationDate |
2015-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2015169912-A1 |
| titleOfInvention |
Method for producing water-absorbing polymer particles |
| abstract |
The invention relates to a method for producing water-absorbing polymer particles, having the following steps: a) a polymerization step in which an aqueous monomer solution comprising at least one ethylenically unsaturated acid group-carrying monomer (M) that can be at least partly neutralized and at least one crosslinking agent is polymerized, an aqueous polymer gel being obtained; b) a granulation step in which the aqueous polymer gel with a solid content of 35 to 70 wt.% and a temperature between 75 and 125 °C is pressed out of a high-pressures zone into a low-pressure zone through a perforated plate and a granulate is obtained, the pressure difference between the high-pressure zone and the low-pressure zone equaling 4 to less than 14 bar and the opening ratio of the perforation plate equaling 30 to 80%; c) a drying step in which the granulate is dried to a moisture content of less than 10 wt.%; d) a grinding step and a classifying step, wherein water-absorbing polymer particles are obtained; and e) a surface post-crosslinking step for the water-absorbing polymer particles. The water-absorbing polymer particles have a high swelling rate and a high retention capacity while having an advantageous ratio of the permeability of the swollen gel bed SFC to the centrifuge retention capacity CRC. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018011135-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10335768-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11000829-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023046583-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3438162-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3067370-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11633720-B2 |
| priorityDate |
2014-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |