http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108516939-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-14 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-82 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-36 |
| filingDate | 2018-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108516939-B |
| titleOfInvention | Preparation method of 4, 4' -diaminodicyclohexylmethane with high content of trans-product |
| abstract | The invention discloses a preparation method of 4, 4' -diaminodicyclohexyl methane with high trans-isomer content, and the trans-isomer content in the prepared product is 45-55 wt% (PACM 50). The preparation method comprises the steps of taking 4,4 '-diaminodicyclohexylmethane with low content of trans-products as a raw material, carrying out modification reaction at 100-110 ℃ under the action of a catalyst and a modifier, and then heating to 120-250 ℃ for isomerization reaction to obtain the 4, 4' -diaminodicyclohexylmethane with high content of trans-products. The conversion rate of PACM20 is as high as 99-100%, and the yield of PACM50 is 98-99%. The method of the invention can be realized by high-temperature catalytic reaction without high-pressure hydrogen under the condition of no solvent and low-pressure nitrogen, has simple and convenient operation, is safe and environment-friendly, and is suitable for industrial production. |
| priorityDate | 2018-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.