http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104059221-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-34 |
| filingDate | 2014-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104059221-B |
| titleOfInvention | There is optically active polycarbonate and preparation method thereof |
| abstract | Have optically active polycarbonate and preparation method thereof, belong to macromolecule synthesising technology field, wherein, the repeating unit of polycarbonate isn , in formulan forn ,n orn , described Rn 1 -Rn 3 for-H or alkyl.Its preparation method, comprises the following steps: be distributed in organic solvent by epoxy compounds and catalyzer, carbonic acid gas blistering reaction 30 ~ 40h and get final product; Described epoxy compounds isn ,n orn .The polycarbonate that the present invention obtains has optical activity, and its number-average molecular weight is more than 3000, and second-order transition temperature, more than 150 DEG C, reaches as high as 272 DEG C, can be used as high-temperature polymer material, is applied to the field that Working environment is harsher.Preparation method provided by the invention can at room temperature carry out, also very low to the pressure requirements of carbonic acid gas, and its reaction conditions is gentle, optical selective is high, and the product produced has high optical purity, has wide commercial introduction and is worth. |
| priorityDate | 2013-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.