http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9703105-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dea97595058f316a875c28a64efb90da http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_81a0287b9d80ac5a639ca855ef616b95 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-0016 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-159 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D323-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D305-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D323-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-159 |
| filingDate | 1996-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4190093208f35266e19ab87d03e88868 |
| publicationDate | 1997-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-9703105-A1 |
| titleOfInvention | Preparation of cyclic oligomers of substituted cyclic ethers |
| abstract | A method of producing cyclic oligomers of substituted oxiranes and oxetanes involves the slow addition to a solution of the ether in a relatively polar organic solvent such as dichloromethane or dichloroethane, of a stable protonic acid such as HBF4 or a cationogenic species for example triethyloxonium tetrafluoroborate or an alcohol in conjunction with a stable Lewis acid such as boron trifluoride etherate. The cyclic oligomer product is isolated from other reaction products, in particular the straight chain oligomers, by extraction with a non-polar solvent, hexane being preferred. The cyclic products are effective plasticisers for polyether polymers, particularly where the cyclic ether is related to or even the same as the ether in the polymer since compatability of the materials is then very likely and separation out of plasticiser unlikely to occur. |
| priorityDate | 1995-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 87.