http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109232652-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-65746 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6574 |
| filingDate | 2018-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109232652-B |
| titleOfInvention | Preparation method of bis (2, 4-dicumylphenyl) pentaerythritol diphosphite |
| abstract | The embodiment of the invention discloses a preparation method of bis (2, 4-dicumylphenyl) pentaerythritol diphosphite. Dropping phosphorus trichloride into pentaerythritol, amine hydrochloride catalyst and aromatic hydrocarbon solvent at a reaction temperature of-5-10 ℃ under a slightly reduced pressure condition, then raising the temperature to 85-90 ℃ in stages, carrying out a pressure reduction reaction for 1 hour, stopping the pressure reduction, and then filling nitrogen for protection to obtain a dichloropentaerythritol diphosphite reaction solution; dropwise adding the reaction solution into an aromatic hydrocarbon solvent of 2, 4-dicumylphenol, heating to 90-100 ℃, carrying out reflux reaction for 4 hours under reduced pressure, introducing nitrogen, adding mixed amine to adjust the reaction system to be alkaline, cooling to room temperature, and filtering to obtain bis (2, 4-dicumylphenyl) pentaerythritol diphosphite. The invention strictly controls the reaction conditions such as temperature, pressure, time, catalyst, feeding sequence and post-treatment, and finally obtains the high-performance product with high yield, narrow melting range, low acid value and excellent hydrolysis resistance. |
| priorityDate | 2018-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.