Catalyst composition for hydrogenating 4,4′-methylenedianiline derivatives and method for preparing 4,4′-methylene bis(cyclohexylamine) derivatives using the same
US11964259B2 · kind B2 · utility
0Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2020 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Jan 18, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/822
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst composition for hydrogenating 4,4′-methylenedianiline derivatives is provided. The catalyst composition includes a carrier including aluminum oxide and magnesium oxide, a rhodium-ruthenium active layer loaded on the surface of the carrier, and a solvent including an organic amine. The weight percentage of magnesium oxide in the carrier is between 12% and 30%. A method for preparing 4,4′-methylene bis(cyclohexylamine) derivatives using the catalyst composition is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.