| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d77f51623edc4129b87114b89d5a62a2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2103-38 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-47
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J41-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D15-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J41-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J49-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-47
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-18 |
| filingDate |
2000-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8e86482a6770aa1cb3efd92c2c810cd0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2832033b49b379c109e7a8b12f53eca8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6db7a83c7cbaddf93469758a780eea05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_685527a4061b25b2ac8c7571f525b07d |
| publicationDate |
2002-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1240107-A1 |
| titleOfInvention |
Method for recovering fluorinated emulsifiers |
| abstract |
Fluorinated emulsifiers, in particular, perfluorooctanoic acid are bound to anionic exchange resins for the purification of aqueous effluent from the production of fluoropolymers. Said emulsifiers may be quantitatively eluted from the exchanger with a water-miscible organic solvent, containing a small amount of ammonia. It is of advantage to distil off the ammonia containing solvent, recycle the emulsifier to a further polymerisation and recycle the ammoniacal solvent for elution. Addition of alkalis improves the elution efficiency. |
| priorityDate |
1999-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |