| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_33c922e05f6133b7d72dbb849d77487d |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2810-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2205-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F222-1063
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2300-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F222-102
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2333-02 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-3021
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-3085
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F222-102
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F6-008
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-28004
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-28011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-28016
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L15-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-245 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F222-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-30 |
| filingDate |
2018-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41dced400e116c6f2625e9953356ce42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3422650422128f184c9d732c0b27645b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c21334a9751f288e083fd847ecdd3fb0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_36ae66d6dc42db3e595d8becdc5bf162
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2947757dc4a91bfdbe160de0f167a57c |
| publicationDate |
2022-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-11407848-B2 |
| titleOfInvention |
Method for preparing super absorbent polymer |
| abstract |
A method is provided for preparing a super absorbent polymer capable of exhibiting an excellent absorption rate by including a uniform porous structure through a simple and economical process. The method includes: performing a crosslinking polymerization of a water-soluble ethylenically unsaturated monomer to form a hydrogel polymer; drying and pulverizing the hydrogel polymer; classifying the pulverized polymer into polymer particles having a particle size of at least 10 to 150 μm, polymer particles having a particle size of 150 to 200 μm, and polymer particles having a particle size of 200 to 850 μm to form a base polymer powder having a particle size of 150 to 850 μm; and surface-crosslinking the base polymer powder, wherein in the crosslinking polymerization step, the foaming polymerization proceeds in the presence of polymer particles having an average particle size of 10 to 200 μm obtained in the classifying step and an anionic surfactant. |
| priorityDate |
2017-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |