| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2150-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-798
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-168
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C263-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-524 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-524
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-79
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D229-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D5-46 |
| filingDate |
1998-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2008-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3d3cf59f65eed17489bdc74927ecc1be
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_686fe87336703a625b121439ec81a2b1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c305375c5baacbec5ff43984dc72da6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea618282a4e9ab31d66cca14361c7c93 |
| publicationDate |
2008-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2244586-C |
| titleOfInvention |
Process for the production of light-colored uretdione polyisocyanates |
| abstract |
The present invention relates to a process for the production of polyisocyanates containing uretdione groups by a) oligomerizing a portion of the isocyanate groups of diisocyanates having aliphatically and/or cycloaliphatically bound isocyanate groups in the presence of catalysts or catalyst systems which accelerate the dimerization of isocyanate groups and in the presence of trisubstituted phosphite stabilizers corresponding to formula (I) (see formula I) b) optionally termination of the oligomerization reaction at a degree of oligomerization of 10 to 60% by adding a catalyst poison and c) optionally removing unreacted diisocyanate by extraction or thin-layer distillation. The present invention also relates to the use of the resulting uretdione polyiso-cyanates as a starting component for polyurethane plastics, particularly as an iso-cyanate component for the production of uretdione hardeners for powder coating compositions. |
| priorityDate |
1997-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |