http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0471628-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b55c349b43c3ecba4977fd52cc8f8c67 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-56 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56 |
| filingDate | 1990-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3042aea9938877db939162290f275dba http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b38327e8e871fa413025507fcbfc044 |
| publicationDate | 1992-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0471628-A |
| titleOfInvention | Composite semipermeable membrane and its production |
| abstract | PURPOSE: To obtain high desalting property and water permeability by forming an ultrathin film comprising aromatic polyamide having two or more -NH groups and one or more amino groups at the position of steric hindrance. n CONSTITUTION: The aromatic polyamide which constitutes the ultrathin film contains a structural component expressed by formulae (I), (II) or the like as a part of the polyamide. This structural component has two or more -NH groups and at least one amino group at the position of steric hindrance. This composite semipermeable membrane is obtained by applying an aq. soln. containing a multifunctional aromatic amine component such as 1, 2,4-triaminobenzene, etc., on a supporting film such as polysulphone, etc., and then applying a water- incompatible org. solvent soln. containing multifunctional acid halide such as trimesic acid chloride, etc., to effect condensation polymn. in the interface of the aq. soln. Thus, the polyamide is produced on the supporting film and if required, it is then treated by heating. The obtd. membrane has extremely high desalting property and water permeability. n COPYRIGHT: (C)1992,JPO&Japio |
| priorityDate | 1990-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.