| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_824448eec22bc414e8c5bd3143473df1 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-585 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-43
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-585
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-43
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-07 |
| filingDate |
2019-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d87452fdd625eb20519e9530a3b4bea
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_114d9bc651f1ade3e2c7f9b24eef8aa6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d9c54ce2d44aee7fcaf85f7a09c8f0a8 |
| publicationDate |
2021-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2021102008-A1 |
| titleOfInvention |
Method for producing anionic polymers and use as resistance agents in a paper-making method |
| abstract |
The invention relates to a method for producing anionic polymers that are hydrosoluble in an aqueous solution, comprising at least the following successive steps: b) polymerisation, in an aqueous solution, of anionic monomers containing at least 5 mol % of 2-acrylamido-2-methylpropane sulfonic acid and/or one of the salts thereof and optionally non-ionic monomers up to a mass concentration of polymer A of between 5 and 40%, b) addition of at least one aldehyde into the solution produced in step a), and c) acidification to a pH of between 3 and 4 of the solution produced in step b). The invention also relates to the use thereof in a paper-making method. |
| priorityDate |
2018-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |