http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109879997-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F136-04 |
| filingDate | 2019-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109879997-B |
| titleOfInvention | Preparation method of trans-3, 4-poly (1-aryl-1, 3-butadiene) |
| abstract | The invention relates to a preparation method of trans-3, 4-poly (1-aryl-1, 3-butadiene), wherein the catalyst composition is a rare earth compound shown as a formula (A)The invention discloses a series of rare earth catalysts with high syndiotactic 3, 4-selectivity for polymerization of 1-aryl-1, 3-butadiene monomer, wherein the syndiotactic degree of the obtained polymer can reach more than 99 percent at most, and the 3, 4-selectivity can reach more than 99 percent at most; the trans-3, 4-poly (1-aryl-1, 3-butadiene) has a structure shown in a general formula (I): n is 250-10000, the syndiotactic degree is more than 90 percent, and the 3, 4-selectivity is more than 95 percent; r is selected from hydrogen, halogen elements, alkyl, isopropenyl, alkoxy, aryloxy, alkylamino, arylamine, alkylthio, arylthio, alkylphosphino and arylphosphino. |
| priorityDate | 2019-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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