http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111848956-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-80 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G77-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-16 |
| filingDate | 2019-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111848956-B |
| titleOfInvention | Polysiloxane with end group of phenolic group and preparation method thereof |
| abstract | The invention provides polysiloxane with a phenolic end group and a preparation method thereof, wherein the content of free allyl-containing phenol is less than 100ppm, the capping rate of the phenolic end group is more than 98 percent, and metal platinum does not exist. The preparation method comprises the following steps: a) catalyzing tetramethyldisiloxane and a phenolic compound containing allyl by using a transition metal catalyst to react to prepare an end-capping agent with a phenolic group as an end group; b) separating by reduced pressure distillation to obtain pure end capping agent with end group of phenolic group; c) under the condition of an acid catalyst, the pure end capping agent with the end group of the phenol group and silane ring bodies are subjected to ring-opening polymerization to obtain the polysiloxane with the end group of the phenol group. The polysiloxane with the phenolic group at the tail end has the advantages of high end capping rate, low free phenol content, low platinum content and the like. |
| priorityDate | 2019-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 70.