http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113956364-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D101-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B3-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B3-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D101-14 |
| filingDate | 2021-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113956364-B |
| titleOfInvention | A kind of preparation method of cellulose acetate butyrate |
| abstract | The invention provides a preparation method of cellulose acetate butyrate, which relates to the technical field of cellulose modification. The preparation method specifically includes the following steps: (1) Activation: immersing cellulose in a mixed activation solution of acetic acid and acetic anhydride (2) Esterification and hydrolysis: After mixing the activated cellulose with acetic acid and acetic anhydride, under the catalyzed condition of a solid acid catalyst, carry out an esterification reaction, and then add the esterified cellulose to the Hydrolysis is carried out in acetic acid; (3) purification: the hydrolyzed cellulose is precipitated, filtered, washed and dried to obtain cellulose acetate butyrate; the solid acid catalyst includes catalyst A and catalyst B; the catalyst A is SO 4 2 --ZrO 2 -Fe 2 O 3 catalyst, and the catalyst B is SO 4 2 --ZrO 2 -Al 2 O 3 catalyst. The preparation method is convenient and pollution-free, and can be prepared with high yield and high content of butyryl groups. |
| priorityDate | 2021-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.