| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7f9af914ed2fb00cd4f1b8b1a28964e4 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2220-68 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-28016
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-28011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-3085
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-3021
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L33-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-28004 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L33-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-26 |
| filingDate |
2020-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dfdb8e54d929c391c16eaeefc6b534f2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79945a4983857697ea6abef35799cdf5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c340f2d0d7c01ef36a9124dafece3b42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_24d642b9e50523af7eb4cea75478a1cc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_98edb6f8c71a8b8eb2437dcb3f031e69 |
| publicationDate |
2021-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2021095806-A1 |
| titleOfInvention |
Particulate water absorbent and method for producing same |
| abstract |
[Problem] To improve the residual ratio of a chelating agent in a particulate water absorbent, which is the final product, in a mode wherein the chelating agent is added in an upstream step such as a polymerization step in the production process. [Solution] A particulate water absorbent which is mainly composed of a poly(meth)acrylic acid (salt)-based water absorbent resin, while containing a chelating agent having a nitrogen atom and an inorganic reducing agent having a sulfur atom, wherein the chelating agent ratio as calculated by the steps (a) to (c) described below is from 0.8 to 1.8. (a) A predetermined impact test is performed on the particulate water absorbent. (b) The particulate water absorbent, on which the impact test has been performed, is sieved into particle group 1 having a particle diameter of less than 300 μm and a particle group 2 having a particle diameter of 300 μm or more but less than 850 μm by means of JIS standard sieves. (c) After determining the quantity of a chelating agent content C1 that is present in particle group 1 and the quantity of a chelating agent content C2 that is present in particle group 2, C1 is divided by C2. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023149574-A1 |
| priorityDate |
2019-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |