http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105061709-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-2825 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-282 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7657 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7614 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-76 |
| filingDate | 2015-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105061709-B |
| titleOfInvention | A kind of polyurethane curing agent and its preparation method based on toluene diisocyanate dimer |
| abstract | The invention belongs to the technical field of curing agent, discloses a kind of polyurethane curing agent based on toluene diisocyanate dimer and preparation method thereof.Methods described under nitrogen protection, dimerization catalyst is added into toluene diisocyanate monomer for (1), is stood 1~2h of reaction at normal temperatures, filtering, is obtained toluene diisocyanate dimer；(2) under nitrogen protection, hydroxyl small molecular alcohol is mixed with toluene diisocyanate monomer mixture, reacts 1~2h in 40~60 DEG C, obtain polyurethane prepolymer；Polar solvent and hydroxyl catalyst for trimerization are added in polyurethane prepolymer, 2~4h is incubated in 50~60 DEG C；Toluene diisocyanate dimer is then added, 2~4h is incubated in 50~60 DEG C, is eventually adding polymerization inhibitor and is incubated 1~2h again, cooling discharge, obtain polyurethane curing agent.The preparation method of the present invention is simple；Prepared curing agent is of light color, viscosity is low, free monomer content is low. |
| priorityDate | 2015-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 73.