| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d0bbe79ca7fd1c68a0683ff0af12a2d8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_95e3a9128cc2d7c36197fd3c0c3106dd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2fa8f8941ecc2d9521285617dbb93322
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_62699767e62386e4738f697229dd299f |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B03D2203-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B03D2201-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B03D2201-02 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B03D1-012
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B03D1-008 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B03D1-008 |
| filingDate |
1949-08-10^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1951-11-28^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-662122-A |
| titleOfInvention |
Improvements in froth flotation processes and frothing agents for use therein |
| abstract |
Tetra-propoxy-ethanes are prepared by reacting glyoxal with the required alcohol, e.g. n-propanol reacted with glyoxal and distilled under vacuum gives a crude acetal which on fractional distillation in vacuo yields pure 1,1,2,2-tetra-normal-propoxy-ethane.ALSO:In the froth flotation of minerals 1.1.2.2. tetra-propoxy ethane or 1.1.2.2. tetra-isopropoxy ethane is used as the frothing agent. The reagent is stated to be particularly suitable for the separation of sulphide ores, e.g. copper sulphide ores, and may be used with ethyl xanthate as the collecting agent. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-1182163-B |
| priorityDate |
1948-08-17^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |