http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-845815-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-127 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01B3-465 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01G4-222 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J27-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F7-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01G4-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01B3-46 |
| filingDate | 1958-07-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1960-08-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-845815-A |
| titleOfInvention | Method for preparing chlorophenylchlorosilanes |
| abstract | Chlorophenylchlorosilanes containing more than 3 nuclearly attached chlorine atoms per phenyl nucleus are prepared by chlorinating with gaseous chlorine a phenylchlorosilane of the formula (C6H5)n Si Cl4-n, where n is 1, 2 or 3, in the presence of a mixed catalyst system composed of ferric chloride and antimony pentachloride. Both catalyst compounds may be formed in situ during the chlorination from iron or an iron compound and from antimony or an antimony compound. Such compounds include ferrous chloride, ferric and ferrous acetates, iron hydroxide, ferric oxychloride and ferric octoate, and antimony trichloride, oxychloride, oxide, acetate and octoate. Preferably from 0,05 to 10 parts of ferric chloride are used per part of antimony chloride, and from 0.05 to 5% of the mixture based on the silane. Temperatures of about 75 DEG to 115 DEG C. are generally employed. The chlorophenylchlorosilanes are isolated by fractional distillation. The examples describe the chlorination of phenyltrichlorosilane, producing mixtures of tetrachlorophenyl trichlorosilane with small amounts of the di- and tri-chlorophenyl derivatives and chlorobenzenes, and of diphenyl dichlorosilane, producing mixtures of octachlorodiphenyl dichlorosilane with other chloror derivatives.ALSO:A mixture of ferric chloride and antimony pentachloride is used as catalyst in the chlorination of phenyl chlorosilanes (see Group IV(a)). Both compounds may be formed in situ during the chlorination from their metals or from other iron and antimony compounds. Such compounds include ferrous chloride, ferric and ferrous acetates, iron hydroxide, ferric oxychloride and ferric octoate, and antimony trichloride, oxychloride, oxide, acetate and octoate. Preferably from 0.05 to 10 parts of ferric chloride are used per part of antimony chloride. In examples the catalyst is formed by in situ reaction with chlorine of a mixture of Fe powder and SbCK. Specifications 544,143 and 673,322 are referred to. |
| priorityDate | 1957-08-19^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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