http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104031267-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-20 |
| filingDate | 2014-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104031267-B |
| titleOfInvention | A kind of preparation method of special ethylene base content polysiloxanes |
| abstract | The present invention relates to the preparation method of a kind of special ethylene base content polysiloxanes, its method particularly includes: add 50～300mg except the hexamethyl cyclotrisiloxane monomer and 100～1000mg1 after water, 3, 5 trivinyl 1, 3, 5 trimethyl cyclotrisiloxane monomers newly steam in tetrahydrofuran solvent to 5ml, add 10 n-butyllithium solutions, react 20 hours under the conditions of 40 DEG C, add frost absolute methanol and carry out end group termination, polymer to be had precipitates, it is centrifuged separating, the precipitate obtained carries out revolve steaming process, obtain the polysiloxanes of special ethylene base content.The inventive method is reacted by controlled anionic ring-opening polymerization, generally can adjust reaction temperature, on-off reaction time by changing monomeric charge ratio, add the modes such as chain terminating agent polymerization process is controlled, it is possible to achieve the regulation and control of monomer conversion, molecular weight and contents of ethylene. |
| priorityDate | 2014-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.