http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109678991-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F8-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F36-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F8-08 |
| filingDate | 2018-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109678991-B |
| titleOfInvention | Method for directly preparing epoxidized conjugated diene polymer from conjugated diene solution polymerization stock solution |
| abstract | The invention discloses a method for directly preparing an epoxidized conjugated diene polymer by using a conjugated diene solution polymerization stock solution, belonging to the technical field of polymer manufacture and modification. The method is characterized in that a polymer stock solution formed by homopolymerization or copolymerization of a solution of conjugated diene in a polymerization reactor is used as a raw material, and partial double bonds in a conjugated diene polymer are epoxidized by hydrogen peroxide under the catalytic action of phosphotungstic acid quaternary ammonium salt to prepare an epoxidized conjugated diene homopolymer or copolymer. In the reaction process, the conversion rate of hydrogen peroxide in hydrogen peroxide can reach 100%, the epoxidation rate of carbon-carbon double bonds in the conjugated diene polymer is adjustable between 0.01 and 50 mol%, and the catalytic efficiency can still reach more than 90% of that of a fresh catalyst after the catalyst is recovered and recycled for three times. Compared with the method using the solid conjugated diene polymer raw material, the method saves the processes of solvent removal and drying, polymer crushing and dissolving and the like in the preparation process, can greatly reduce energy consumption and improve production efficiency and economy. |
| priorityDate | 2018-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.