http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107923127-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H23-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21J1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-675 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-68 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H23-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-10 |
| filingDate | 2016-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107923127-B |
| titleOfInvention | method of making paper |
| abstract | The present invention relates to a method for producing paper and paperboard, comprising the steps of: providing an aqueous suspension comprising filler, at least one water-soluble amphoteric polymer and microparticles; adding the aqueous suspension to paper stock, The obtained stock is dewatered, thereby forming a sheet in the wire section, until the dry matter content of the sheet is at least 18% by weight; the sheet is then pressed and dried. Water-soluble amphoteric polymers can be obtained by copolymerizing a monomer mixture comprising: a) at least one N- of the following general formula, followed by partial or complete hydrolysis of the -CO-R 1 groups of the polymer vinyl carboxamide, wherein R 1 and R 2 independently of one another represent H or C 1 -C 6 alkyl; b) at least one monoethylenically unsaturated monomer having at least one free acid group or at least one acid group in the form of a salt c) optionally at least one monoethylenically unsaturated monomer different from components (a) and (b); and d) optionally at least one monoethylenically unsaturated monomer having at least two ethylenically unsaturated monomers in the molecule Compounds with saturated double bonds; in which the difference in the content of cationic monomeric units and anionic monomeric units in absolute mole % is at most 10, in each case based on the total moles of all monomer units. |
| priorityDate | 2015-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 225.