http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1292782-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2dbb2d7ecbd600cf89fbdd230f4a466c |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-0542 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-05 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-44 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L83-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F130-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B05D1-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-44 |
| filingDate | 1971-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a02e09760e2a2c5af93648b488dfd0d7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a8c019dffc3fe789c40759f9d0b1bef8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d4ed91cf5a2b99d18e64b67b30f4258 |
| publicationDate | 1972-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1292782-A |
| titleOfInvention | Anisotropic organosilicon polymer membrane |
| abstract | 1292782 Vinylsilane polymer membranes RHONE-POULENC SA 19 April 1971 [3 March 1970] 22257/71 Heading B5B [Also in Divisions B1 B2 and C3] An anisotropic membrane comprises a vinyl di- or triorganosilane polymer which has a dense layer of 0À01-10Á thickness, and a porous layer of up to 500Á thickness wherein the pores constitute 25-80% of the total membrane volume. The membrane is made by casting a ternary solution in two solvents whose boiling points differ by at least 30 C. and a non-solvent which boils above the more volatile solvent, allowing at least a part of the more volatile solvent to evaporate, contacting the east layer with a non-solvent and finally drying the resulting membrane. By "dense layer" is meant a layer which exhibits a selective permeability to gases not more than 10% different from that of a conventionally cast film, and by "porous layer" is meant a layer exhibiting no selective gas permeability. In examples a polymer of vinyltrimethylsilane, optionally copolymerized with vinyldimethylpropylsilane, is used. Solvents specified are aromatic hydrocarbons and aliphatic halocarbons. Non-solvents specified are water, alcohols and ketones. The membranes are useful in enriching one component of gas mixtures. |
| priorityDate | 1970-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.