http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104271622-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-098 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-5317 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L15-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-0025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-098 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L15-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-5317 |
| filingDate | 2013-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104271622-B |
| titleOfInvention | Color-stable super-absorbent |
| abstract | The invention relates to a super-absorbent, the surfaces of which are complexed with multivalent metal ions and which contains at least one phosphonic acid derivative, the molar ratio between multivalent metal and phosphonic acid derivative being at most 1.2/n, n being the number of phosphonic acid groups in the phosphonic acid derivative, which super-absorbent exhibits good stability against discoloration and surprisingly low caking tendency, without the usage properties of the super-absorbent being substantially impaired. Such super-absorbents can be produced by polymerizing an aqueous monomer solution that contains a) at least one ethylenically unsaturated acid-group-bearing monomer, which is optionally present at least partially as a salt, b) at least one cross-linking agent, c) at least one initiator, d) optionally one or more ethylenically unsaturated monomers that can be copolymerized with the monomers mentioned under a), e) optionally one or more water-soluble polymers. The method also comprises drying the obtained polymerizate, optionally grinding the dried polymerizate and sifting the ground polymerizate, optionally surface post-crosslinking the dried and optionally ground and sifted polymerizate, adding at least one salt of a multivalent metal, and adding at least one phosphonic acid derivative. The method is characterized in that salt of a multivalent metal and phosphonic acid derivative are added in such amounts that a molar ratio between the metal and the phosphonic acid derivative of 1.2/n is not exceeded, n being the number of phosphonic acid groups in the phosphonic acid derivative. |
| priorityDate | 2012-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 178.