http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S56108504-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-16 |
| filingDate | 1980-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2205edfc410ccf7e6c3230b152bb5bb3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_098bdf1a6464d6a745472cdbadeef4bb |
| publicationDate | 1981-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S56108504-A |
| titleOfInvention | Manufacture of reverse osmotic membrane of cellulose ester |
| abstract | PURPOSE:To permit the manufacture of membrane at room temperature as well make easier the control of temperature, humidity, and evaporating time by using a specific swelling agent in the manufacture of a reverse osmotic membrane from a cast liquid containing a cellulose ester, a solvent, and a swelling agent. CONSTITUTION:As a swelling agent, an organic compound of a molecular weight of 350 or less, containing 5 or more both carboxyl and carboamide groups, together 3 or less hydroxyl groups as needed, preferably as represented by the formula I. For example, maleic acid monoethanolamide may be cited. The compound is dissolved in a cellulose acetate-solvent system, and then the solution is cast, allowed to stand in an atmosphere of 25 deg.C and 35% (relative humidity), for example, for a certain period of time (seconds) to evaporate solvent, dipped in ice water for gelation, and then treated in hot water to obtain a reverse osmotic membrane. |
| priorityDate | 1980-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.