| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cb7e837c6fcfff9198f585f700fb3929 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-305
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-06 |
| filingDate |
2017-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_087751d85f140a1778b4e287fbecd126
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab08496d0679f41de98f3fec7aa0a9a3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1569c6cac8cdc51f7ba2292dc2c9a11a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f96fca2aaa3852fc1184dbb4bb2a63b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f44c7bc60a6e198dc002c9cf20b729a5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e5ade6d95c7d3d5febaa9170931a62e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b9c6f69db9d7a17c9d06069dfdc2826c |
| publicationDate |
2018-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2018086880-A1 |
| titleOfInvention |
Preparing method of aliphatic polycarbonate |
| abstract |
A preparing method of an aliphatic polycarbonate is provided to synthesize oligomer monomers by a transesterification reaction of carbonic acid dialkyl esters and aliphatic diols with accelerants in an atmosphere of a protective gas, and generate an aliphatic polycarbonate polymer by a polycondensation reaction of the oligomer monomers in a condition of high temperature and low pressure. According to the disclosure, environmentally friendly compounds with low boiling points and low costs are utilized as the accelerants to substitute the enzyme or acid-base catalysts to prepare aliphatic polycarbonate polymers in the prior art, and the cost is reduced; meanwhile, in the process of generating the aliphatic polycarbonate polymers, the accelerants can be removed from the reaction system along with the pressure reduced in the reaction system. The synthesis system is simple; moreover, the aliphatic polycarbonate obtained by the preparing method provided by the disclosure has merits such as superior colors. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112280028-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112961885-A |
| priorityDate |
2015-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |