http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1152550-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/C08G77-50 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G2-00 |
| filingDate | 1967-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ffe8f7e8f15b4cde815901b5c0007eb6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0119cdafaf1a82c5dcc13222a1f019e3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7186cfa0e3d65af491baeb51334e9585 |
| publicationDate | 1969-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1152550-A |
| titleOfInvention | Process for the Production of Silicon-Containing Trioxane Copolymers |
| abstract | 1,152,550. Silicon-containing trioxane copolymers. FARBENFABRIKEN BAYER A.G. 21 Dec., 1967 [12 Jan., 1967], No. 58011/67. Heading C3T. Silicon-containing trioxane copolymers are prepared by copolymerizing trioxane with 0À1 to 50 mol. per cent of a compound wherein each R represents an alkyl or phenyl group, and X represents an alkylene group or - SiR 2 -O- or -SiR 2 -O-CH 2 -, at 50- 120‹ C. in the presence of a cationic initiator. Suitable compounds listed have R= methyl or ethyl and X = -SiMe 2 O-, -SiMe 2 -OCH 2 -, -CH 2 CH 2 -, -(CH 2 ) 3 - or -(CH 2 ) 5 -. Suitable initiators are H 2 SO 4 , HClO 4 , alkane sulphonic acids, p-toluene sulphonic acid, FeCl3, FeBr 3 , SbCl 5 , TiCl 4 , SnCl 4 and [Et 3 O]+[FeCl 4 ]-. The reaction may be conducted in suspension or solution, and the crude product may be suspended in an aqueous or alcoholic solution of a base, and optionally heated at 160-220‹ C. in vacuo. Other comonomers may be incorporated, e.g. styrene, acrylonitrile, ethyl vinyl ether, methyl vinyl sulphone, ethylene oxide, propylene oxide, 1: 3-dioxolane, di- and tri-ethylene glycol formals, bis-(alkylsulphonyl)-imidazolidines, alkylsulphonyl oxazolidines, hexamethyl cyclotrisiloxane, octamethyl cyclotetrasiloxane, and 2: 2: 8: 8-tetramethyl-2 : 8-disila- 1: 4: 6-trioxacyclo-octane. In examples, 2: 2: 5: 5 - tetramethyl - 2: 5 - disila - 1: 3 - dioxolane (X = -SiMe 2 -O-) is copolymerized with trioxane in presence of FeBr 3 alone or in cyclohexane in presence of triethyloxonium tetrachloroferrate. |
| priorityDate | 1967-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.