| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a2bcaf91101a370a3d64e3190366357f |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F251-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L51-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L51-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F251-02 |
| filingDate |
1999-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e8ba8389e8c71e2112037caab350c43e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f6e2072d04a2ae463691e540dd3ab1fc |
| publicationDate |
2000-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-19905947-A1 |
| titleOfInvention |
Process for the production of superabsorbents and superabsorbents produced by such a process |
| abstract |
A process for the production of superabsorbers by graft copolymerization of cellulose and acrylic acid and / or their derivatives is proposed, the cellulose being swelled and impregnated in supercritical carbon dioxide in the presence of acrylic acid and / or its derivatives and an essentially inactive initiator. the supercritical carbon dioxide charged with acrylic acid and / or its derivatives is removed and the swollen and impregnated cellulose is charged with fresh supercritical carbon dioxide and then the temperature and / or pressure are adjusted such that the initiator is activated and the acrylic acid and / or its derivatives are graft copolymerized with Formation of side chains grafted onto the cellulose and the cellulose is crosslinked via the side chains to form the graft copolymer. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03051945-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100909148-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018060185-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7018497-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6872275-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6645407-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6918981-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009065774-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1664399-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1664399-A2 |
| priorityDate |
1999-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |