http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113563518-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M2209-126 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10N2030-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F251-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10M147-04 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10N30-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10M147-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F251-02 |
| filingDate | 2021-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113563518-B |
| titleOfInvention | Preparation method of fluorinated cellulose nanocrystalline lubricating grease thickening agent |
| abstract | The invention discloses a preparation method of a fluorinated cellulose nanocrystalline lubricating grease thickening agent, which comprises the steps of dispersing cellulose nanocrystals into N, N-dimethylformamide, adding 4-dimethylaminopyridine and triethylamine, and performing ultrasonic dispersion to obtain a suspension; slowly dripping a 2-bromoisobutyryl bromide solution into the obtained suspension in an inert atmosphere, heating to 70-90 ℃ after dripping, reacting for 24-36 h, and centrifuging, washing and dialyzing to obtain CNC-Br powder; dispersing into N, N-dimethylformamide, adding copper bromide, N, N, N, N-pentamethyldiethylenetriamine, cuprous chloride and a monomer with a fluorine-containing group, removing oxygen in a reaction system, and carrying out atom transfer radical polymerization reaction under an inert atmosphere; removing impurities, and drying the extracted product to obtain the product. According to the invention, hydroxyl on the surface of the cellulose nanocrystal is replaced by Br-containing ester group, and then the monomer containing fluorine-containing group is added, so that a fluorinated chain is grafted on the surface of the cellulose nanocrystal, and the lubricating grease thickening agent with excellent performance is obtained. |
| priorityDate | 2021-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.