http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-758311-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cab52e15e149d28af8f65d84a58daeca |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-0838 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-0876 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-10705 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-123 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-107 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F7-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F7-08 |
| filingDate | 1954-11-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1956-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-758311-A |
| titleOfInvention | A process for preparing fluorosilanes and fluorosiloxanes |
| abstract | Fluoro-silanes and siloxanes are prepared by reacting a siloxane having the unit structure <FORM:0758311/IV(a)/1> , a silane of the formula RmSi(OR1)4-m, or a silanol of the formula RxSi(OH)4-x with boron trifluoride etherate and, if desired, diethyl ether; R being a saturated aliphatic or aryl hydrocarbon or halogenated hydrocarbon radical, n is 1 to 3, R1 is a monovalent hydrocarbon radical, m is 0 to 3 and x is 1 to 2. Many examples of starting materials are given. Reaction proceeds at room temperature but heating to 126 DEG C. is preferred. In the examples: (1) trimethylfluorosilane is prepared from hexamethyldisiloxane and BF3.Et2O; (2) phenylmethyldifluorosilane is obtained using phenylmethyldiethoxysilane; (3) dimethyldifluorosilane and sym. difluorotetramethyldisiloxane are prepared from octamethylcyclotetrasiloxane; (4) chloromethyldimethylfluorosilane and trimethylfluorosilane are prepared from chloromethylpentamethyl disiloxane; chloromethyldimethylfluorosilane from bischloromethyltetramethyldisiloxane; ethyldimethylfluorosilane from symdiethyltetramethyl disiloxane; and triethylfluorosilane from hexaethyldisiloxane; (5) triethyltrifluorosilane is obtained from trimethylethoxysilane; (6) silicon tetrafluoride is obtained from ethyl orthosilicate; (7) triethylfluorosilane is prepared from triethylsilanol; (8) partially condensed chlorophenylsiloxanes react forming chlorophenyltrifluorosilane; (9) octadecylmethyldifluorosilane is prepared from octadecylmethylsiloxanes. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2767024-A |
| priorityDate | 1953-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 65.