| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5e3324a35e1615e6eede6df1be26b7dd |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2800-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F11-147
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D21-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-603 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F11-147
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D21-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-60 |
| filingDate |
1993-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b54919dfb786fc2c1d84100a33bc7484
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2f0a183e95a689ac7186acade6332eaf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ce02e3157dd62729799eb73c1b6799d |
| publicationDate |
1996-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0656372-A4 |
| titleOfInvention |
Sewage sludge dehydrating agent. |
| abstract |
A novel process for producing an acrylic polymer serving as a sludge dehydrating agent, which polymer contains tertiary amino group which are neither quaternized nor converted into corresponding salts and has a high molecular weight, which process comprises preparing an acrylic monomer containing a tertiary ammonium carbonate group by the reaction of an aqueous solution of an acrylic monomer containing a tertiary amino group with carbon dioxide, polymerizing the obtained monomer alone or copolymerizing the monomer with another copolymerizable vinyl monomer to prepare a polymer containing tertiary ammonium carbonate units, and decarbonating the polymer by heating and/or evacuating. Among others, especially an acrylic polymer containing at least 5 mol% of the tertiary amino group units and comprising a water-soluble vinyl polymer having the intrinsic viscosity [θ] of 1 dl/g or above is useful as an excellent sludge dehydrating agent. |
| priorityDate |
1991-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |