| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D251-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-791 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D251-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-02 |
| filingDate |
1986-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1989-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_99cfa2d3115ffb0bf15d582a26377046
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b41a7f1ad8db2c4c213e366bb63e15a9 |
| publicationDate |
1989-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4837321-A |
| titleOfInvention |
Process for the preparation of polyisocyanates containing isocyanurate groups |
| abstract |
The present invention is directed to a process for the preparation of isocyanurate group-containing polyisocyanates by trimerizing a portion of the isocyanate groups of an organic polyisocyanate and terminating the trimerization reaction by the addition of a catalyst poison, characterized in that the trimerization catalyst used is a quaternary phosphonium salt of a tertiary phosphine and an alkylating ester of an acid of phosphorus. The present invention also relates to the use of the polyisocyanates obtained according to this process, optionally, in a form that has been freed from excess starting polyisoyanate and/or optionally blocked with blocking agents for isocyanate groups as the isocyanate component for the preparation of polyisocyanate polyaddition products, preferably polyurethanes. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5326573-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008262186-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5218111-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102442959-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102442959-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5036151-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014112946-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6063891-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6127308-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6028158-A |
| priorityDate |
1985-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |