| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_19a312733f23cc05a33531bcd556bd3c |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G69-265
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-1251
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D69-125
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-56 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D69-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-26 |
| filingDate |
1988-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7214f318cdc2f480828e391ac94b2ab2 |
| publicationDate |
1989-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0313354-A1 |
| titleOfInvention |
Reverse osmosis membranes and process for their production |
| abstract |
A thin composite membrane suitable for use in reverse osmosis is formed by the interfacial polymerisation at one surface of a microporous support of a water soluble polyfunctional aliphatic primary amine and a water soluble polyfunctional secondary amine with a polyfunctional acid halide preferably having an average polyfunctionality greater than 2.05, said membrane having been produced using a mole ratio of component (A) to component (B) of less than 1:5. A preferred aliphatic primary amine is 1,2-diaminoethane and the preferred secondary amine is piperazine. By use of the invention a reverse osmosis membrane can be prepared to demineralise cheese whey with the passage of not more than 5% lactose and not less than 25% minerals, or can be used in the treatment of effluent from yeast culture with the passage of no less than 50 to 60% sodium chloride, no more than 0.6% sulphate and no more than 5% chemically oxidizable organic compounds. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2241105-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2241105-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7279097-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1488846-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3329986-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SG-135037-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9418262-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2576027-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0465649-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0465649-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11167249-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100850405-B1 |
| priorityDate |
1987-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |