| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d0d4e7675b625ec4650326b4469f42bb |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2325-36 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D39-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0009 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L77-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D39-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D67-00 |
| filingDate |
1983-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1984-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
ES-8403326-A1 |
| titleOfInvention |
A PROCEDURE FOR PREPARING A POLYAMIDE MEMBRANE. |
| abstract |
PROCEDURE TO PREPARE A POLYAMIDE MEMBRANE INCLUDES THE FOLLOWING OPERATIONS: FIRST, A CAST SOLUTION IS PREPARED THAT INCLUDES A CAST RESIN SYSTEM CONSTITUTED OF A POLYAMIDE RESIN INSOLUBLE IN ALCOHOL AND A POLYMER THAT MODIFIES THE SURFACE, AND MODIFIES THE SURFACE A SOLVENT SYSTEM IN WHICH SAID CAST RESIN SYSTEM IS SOLUBLE; SECOND, THE FORMATION OF NUCLEUS OF SAID CAST SOLUTION IS INDUCED BY THE CONTROLLED ADDITION OF A NON-SOLVENT OF SAID CAST RESIN SYSTEM; THIRD, SAID CASTING COMPOSITION WAS SPREAD ON A SUBSTRATE TO FORM A FILM ON SAID SUBSTRATE; FOURTH, THE FILM OF SAID CASTING COMPOSITION IS CONTACTED AND THINNED WITH A NON-SOLVENT LIQUID SYSTEM OF SAID CASTING RESIN SYSTEM; AND FINALLY, SAID MEMBRANE IS WASHED TO SEPARATE THE SOLVENT AND THEN DRY. |
| priorityDate |
1982-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |