http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8389770-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1eff323ee92519da794f6480ec995a56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_95c89084d61fd47ae93470ca7c96f184 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fa5dff6602859e8ab9486c7606aab763 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-78 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-09 |
| filingDate | 2009-03-26^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-03-05^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7571c4a2836bfd50970a4f8a28e38bf6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_538610d35311238d989c7b98507a8384 |
| publicationDate | 2013-03-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-8389770-B2 |
| titleOfInvention | Method for producing diaminodiphenyl alkanes |
| abstract | The invention relates to a method for producing diaminodiphenyl alkanes, wherein an aromatic amine, which can be substituted or unsubstituted, is reacted with a C1-C3 aldehyde in the presence of a heterogeneous catalyst, said catalyst being a mesoporous acidic ion exchanger based on a divinylbenzene/styrene copolymer and the catalyst having acid centers in a concentration of 4 to 6 eq/kg as measured according to DIN 54 403 and the average pore diameter of the catalyst particles being 10 to 32 nm as measured according to ASTM D 4222 10, and the content of polynuclear compounds in the reaction mixture being ≦10% by weight. |
| priorityDate | 2008-04-30^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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