| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6ccee8e1d48352b3e8c8af081eb34375 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2343-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-143 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-04 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-08 |
| filingDate |
1999-01-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2008-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07d7f0c65d5649dd9b05d64563b787bb |
| publicationDate |
2008-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2321727-C |
| titleOfInvention |
Membrane filtration of polymer containing solutions |
| abstract |
In a method for recovering polymers in a substantially pure form from a solution containing the polymers, the solution is first treated with a reactant (e.g. an acid, a sequestrant or a mixture of both) to form t he free polymers and salts of the reactant. Second, the solution is treated to remove the salts therefrom and in a final stage the polymer solution is concentrated and the polymers recovered. The second treatment step may consist of membrane-filtration, ion-exchange or electrodialysis. |
| priorityDate |
1998-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |