http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-691374-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A01N57-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-165 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-165 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01N57-12 |
| filingDate | 1950-05-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1953-05-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-691374-A |
| titleOfInvention | Neutral esters of thiophosphoric acid |
| abstract | Neutral esters of thiophosphoric acid are manufactured by a process which comprises heating an alkali salt of a dialkyl phosphite with an alkyl or substituted alkyl-thiocyanate or alkylene dithiocyanate. The invention also comprises dialkyl S-alkyl mercapto-alkyl thiophosphates, diethyl S - b - ethylmercaptoethyl thiophosphate boiling at 137-141 DEG C. at 1 mm. pressure and diethyl S-b -methylmercapto-ethyl thiophosphate boiling at 134-138 DEG C. at 2 mm. pressure. The alkyl radicals of the alkyl thiocyanates may be for example, methyl, ethyl, propyl, butyl, hexyl, dodecyl and they may be substituted for example by aryl and the carbon chain may be interrupted by hetero atoms, e.g. sulphur. The alkylene radicals may belong to the ethylene series. Dialkyl S-alkylmercapto-alkyl thiophosphates may be produced by using alkyl mercaptoalkyl thiocyanates as starting materials. Inert solvents such as benzene or homologues thereof may be used as reaction media. In examples: (1) Diethyl S-methylthiophosphate, (2) diethyl S-ethyl thiophosphate, (3) diethyl S-propylthiophosphate, (4) diethyl S-isobutyl thiophosphate, (5) diethyl S-hexyl thiophosphate, (6) diethyl S-dodecyl thiophosphate, (7) diethyl S-benzyl thiophosphate, (8) tetraethyl S,S-ethylene dithiophosphate, (9) (C2H5O)2 PO.S C2H4.S.C2H5 and (10) (C2H5O)2PO.S.C2H4.S CH3 are prepared by reacting diethyl phosphite in a solvent with methyl, ethyl, n-propyl, isobutyl, n-hexyl, dodecyl, benzyl thiocyanates, ethylene dithiocyanate, b -ethyl mercaptoethyl thiocyanate and b -methylmercapto ethyl thiocyanate respectively. |
| priorityDate | 1949-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.