http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110092901-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-3236 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-323 |
| filingDate | 2019-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110092901-B |
| titleOfInvention | Fluorination process of unstable end group of perfluoropolyether |
| abstract | The invention relates to the technical field of fluorine chemical industry, in particular to a process for fluorinating unstable end groups of perfluoropolyether, which comprises the following steps: step 1: vacuumizing a bubble column fluorination reactor, and adding a raw material of perfluoropolyether acyl fluoride and/or perfluoropolyether carboxylic acid into the reactor from the upper end of the bubble column fluorination reactor; then heating the bubble column fluorination reactor to 130-170 ℃; step 2: adjusting the pressure in the bubble column fluorination reactor; and step 3: introducing fluorinating agent gas, reacting for 45-90 min, and then heating to a set reaction temperature; and 4, step 4: and after the reaction is carried out for 4-48 hours, stopping introducing the raw materials, carrying out nitrogen purging, reducing the temperature of the materials to be below 40 ℃, and discharging to obtain the catalyst. The invention adopts the bubble tower reactor, utilizes the fluorine gas to carry out end group fluorination treatment on the perfluoropolyether acyl fluoride and/or the perfluoropolyether carboxylic acid, greatly improves the utilization efficiency of the fluorine gas and obtains ideal effect. |
| priorityDate | 2019-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.