| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a712e6e7965beef77cd96f7cf92d3ca2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2650-40 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-23
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L101-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D323-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-265
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G83-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D59-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F216-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-23
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G83-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L101-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D323-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D59-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J20-26 |
| filingDate |
2015-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2018-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d3d6bee1b3335c2be17ccf530a733512
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_100f6bc55763e982c18d9b4f1f22e820
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4bf36f986b8b5277c3318daac6645857
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c0db2b0da88699966db18320a15e1ff |
| publicationDate |
2018-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9988466-B2 |
| titleOfInvention |
Benzocrown ether graft polymer with lithium isotopic separation effect and preparation method thereof |
| abstract |
Disclosed in the present invention is a benzocrown ether graft polymer with a lithium isotopic separation effect and a preparation method thereof. The polymer is a benzocrown ether graft polymer formed by the linkage of chemical bonds, which takes the main chain of a polymer containing chloromethyl group, chloroformyl group or hydroxyl group as main chain, and takes a benzocrown ether as pendant group. The preparation process of the polymer comprises the following steps: preparing polymer solution with certain concentration by dissolving a polymer containing chloromethyl group, chloroformyl group or hydroxyl group in a solvent; then blending a catalyst and a benzocrown ether containing carboxyl group or aldehydyl group and dissolving in the polymer solution containing hydroxyl group, or blending an acid-binding agent and a benzocrown ether containing amino group or hydroxyl group and dissolving in the polymer solution containing chloromethyl group or chloroformyl group, reacting at a certain temperature and for a certain time, linking the benzocrown ether to the main chain of polymer by chemical bonds, and precipitating by adding a precipitating agent to obtain the graft polymer. The grafting polymer has excellent characteristic of lithium isotopic separation. |
| priorityDate |
2012-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |