| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_18726312eff9eb2bd2f380dd8189ec20 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2603-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2305-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2305-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C213-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-0019
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L5-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J7-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C269-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-083
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K8-73
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B37-0069
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P17-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B37-0072
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B37-0075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K8-735
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61Q19-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B37-0063
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K8-042 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B37-08 |
| filingDate |
2016-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7503cb45d43279881a998fe7b0205301
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8cc8fb074f3e2fbe96b2ad0f793fa142 |
| publicationDate |
2021-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
RU-2748235-C2 |
| titleOfInvention |
Method for deacetylation of biopolymers |
| abstract |
FIELD: chemistry.SUBSTANCE: invention relates to chemistry of biopolymers. The proposed method for at least partial deacetylation of a glycosaminoglycan containing acetyl groups involves providing a glycosaminoglycan containing acetyl groups and having a weighted average molecular weight in the range of 1 to 5 MDa. Then, the reaction of glycosaminoglycan containing acetyl groups with hydroxylamine (NH2OH) or its salt is carried out at a temperature of 10-90°C during 2-200 hours to form at least partially deacetylated glycosaminoglycan. After that, at least partially deacetylated glycosaminoglycan is isolated. The glycosaminoglycan obtained by this method is characterized by a degree of acetylation of 99% or less and a weighted average molecular weight of 0.5 MDa or more. The use of hydroxylamine or its salt for at least partial deacetylation of glycosaminoglycan and a method for producing a hydrogel product are also proposed.EFFECT: invention is aimed at deacetylation of biopolymers containing N-acetyl groups under mild reaction conditions to allow for a subsequent crosslinking reaction and the formation of a gel structure.15 cl, 2 dwg, 12 tbl, 17 ex |
| priorityDate |
2015-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |