http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-943725-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/C08G77-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F7-12 |
| filingDate | 1962-05-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1963-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-943725-A |
| titleOfInvention | Process for preparing organosilicon compounds |
| abstract | Bis- (diorganohalosilyl) aromatic hydrocarbons of formula X(R1)2SiRSi(R1)2X-(1) are prepared by heating in a closed system at 100 to 300 DEG C. 1 part of a compound: X(R1)2Si[RSi(R1)2]nX-(2) where R is arylene and R1 is a monovalent hydrocarbon, 2 to 10 parts of a dioranodihalogenosilane (R1)2SiX2-(3); from 0.001 to 1.0 parts of a polyvalent metal halide of formula M(X)a where M is Mg, Fe, B or Al and a is 2 to 4 and is equal to the valence of M, and from 0 to 0.1 parts of a silicon hydride HSi(R1)bX3-b where b is 0, 1, 2, or 3, and then separating the bis (diorganohalosilyl) aromatic hydrocarbons. The polymeric starting material (2) is produced as a bye product in the preparation of the compounds (1) by reacting a diorganodihalogenosilane and a dihalosubstituted aromatic hydrocarbon in presence of an active metal such as magnesium or sodium. X may be Cl, Br or I. Specified values of R may be phenylene, naphthalene, and tolylene while R1 may be phenyl, tolyl, naphthyl, phenylethyl, benzyl, methyl, ethyl, propyl, butyl, octyl, vinyl, allyl, cyclohenyl, cycloheptyl, cyclohexenyl and cycloheptenyl radicals. R and R1 may be the same or different. Specified dihalodiorganosilanes are dimethyldichlorosilane, diethyldichlorosilane, methylcyclohenyldichlorosilane, methylvinyldichlorosilane, methylphenyldichlorosilane or diphenyldichlorosilane. In Example (1) mixtures of Cl (CH3)2Si <FORM:0943725/C3/1> with proportions of (CH3)2SiCl2, MgClBr, and CH3HSiCl2 are reacted in an autoclave and after filtering and distilling p-bis (dimethylchlorosilyl) benzene is recovered in yields of 10.7% to 21.0%. In Example (2) FeCl3 is used as the metal halide and in Example (3) a polymer Cl(CH3)2Si [C10H6Si(CH3)2]nCl is mixed with (CH3)2SiCl2, CH3HSiCl2 and AlCl3 to yield 2,7 bis (dimethylchlorosilyl) naphthalene. Alternatively BCl3 may be used as metal halide. |
| priorityDate | 1961-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.