http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-843737-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_99505f5f312672820e9f78c254c00a4d |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2323-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D71-022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D59-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22F3-1134 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D67-0055 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D59-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22F3-11 |
| filingDate | 1958-09-19^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f0827a52d4b23167439c1eaf5e2bcdb9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4413844cfec1adb2e35c6876b1891374 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_050fad61072fecd7d10efafb8b35f8eb |
| publicationDate | 1960-08-10^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-843737-A |
| titleOfInvention | Improvements in methods of manufacturing porous membranes |
| abstract | A thin membrane formed of an alloy of copper, zinc and an element of the group phosphorus, arsenic and antimony is heated in vacuo to cause zinc to evaporate and to leave a porous membrane, suitable for isotopic separation by gaseous diffusion. The alloy may contain 30-40% zinc. Antimony may be used in a proportion of 0.15-0.35% and phosphorus 0.03-0.08%. The alloy may also contain nickel, e.g. in amount of 3-13%. The membrane may have a thickness of 0.02 mm. and pores of radii within the range 100-500 angstroms.ALSO:A thin membrane formed of an alloy of copper, zinc and an element of the group phosphorus, arsenic and antimony is heated in vacuo to cause zinc to evaporate and to leave a porous membrane. The alloy may contain 30-40% of zinc. Antimony may be used in a proportion 0.15-0.35% or phosphorus 0.03-0.08%. The alloy may also contain nickel e.g. in amount 3-13%. The alloy is cast at a temperature of 900-1100 DEG C. or 950-1150 DEG C. in the case of nickel containing alloys, cooled and subjected to successive cold rolling operations with intermediate annealings at 500-700 DEG C. to reduce the thickness to 0.02 mm. for example. Distillation of zinc may be performed at a temperature in the range 600-700 DEG C. for 20-30 minutes under a pressure of 10-4 mm. mercury. Removal of zinc may be effected to the extent of at last 85% to give a body having pores of radii within the range 100-500 angstroms suitable for isotopic separation by gaseous diffusion. |
| priorityDate | 1957-10-02^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Showing number of triples: 1 to 34 of 34.