http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112250835-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D175-04 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-792 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D175-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-79 |
| filingDate | 2020-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112250835-B |
| titleOfInvention | Method for preparing colorless polyisocyanate composition |
| abstract | The present invention provides a process for preparing a colorless polyisocyanate composition. The method comprises the following steps: trimerizing aliphatic/cycloaliphatic diisocyanate monomers in the presence of a catalyst to produce an isocyanurate-containing polyisocyanate composition; the catalyst is pre-formulated into a solution prior to use and the pH of the solution is adjusted to 5-7, preferably 6-7, more preferably 6-6.5. The invention can directly prepare the polyisocyanate composition with lower chroma and excellent chroma stability in the long-term storage process without any post-treatment. |
| priorityDate | 2020-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 87.