http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110330619-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2203-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2203-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L75-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4854 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-6674 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L31-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61L31-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-3221 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L31-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L31-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L75-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48 |
| filingDate | 2019-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110330619-B |
| titleOfInvention | Medical polyurethane material containing lactone group, preparation method thereof and medical catheter |
| abstract | The invention provides a medical polyurethane material containing lactone groups and a medical catheter prepared from the same. The medical polyurethane material is prepared by polycondensation of the following raw materials: 4, 4' -diphenylmethane diisocyanate, butanediol, polytetrahydrofuran and butyrolactone group-containing substances; the material containing butyrolactone groups at least contains two hydroxyl groups, and the molar mass concentration of the butyrolactone groups in the medical polyurethane material is 5-20 mmol/100 g. The lactone group of the medical polyurethane material provided by the invention is in a closed ring state in a dry state, the hydrophobicity of polyurethane can be kept, the extrusion molding of the polyurethane material is not influenced, the lactone group is subjected to a hydrolytic ring-opening reaction in an aqueous phase environment or in vivo, the hydrophilicity of the polyurethane material is increased, the elastic modulus of the polyurethane material is obviously reduced, the medical catheter prepared from the material has higher rigidity in vitro, and the softness is obviously increased after the medical catheter enters a blood vessel of a human body. |
| priorityDate | 2019-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.