Process for the production of cyclohexanedimethanol
US5387752A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Dec 30, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is described for the production of cyclohexanedimethanol by hydrogenation of a dialkyl cyclohexanedicarboxylate which comprises: PA1 (a) providing a hydrogenation zone containing a charge of a granular heterogeneous ester hydrogenation catalyst; PA1 (b) forming a vaporous feed stream of a hydrogen-containing gas,and a hydrogenatable material comprising a dialkyl cyclohexanedicarboxylate at a feed temperature which is in the range of from about 150.degree. C. to about 350.degree. C. and which is above the dew point of the feed stream and at a feed pressure in the range of from about 150 psia (about 10.34 bar) to about 2000 psia (about 137.90 bar), said vaporous feed stream having a known hydrogen-containing gas:dialkyl cyclohexanedicarboxylate ratio; PA1 (c) supplying the vaporous feed stream to the hydrogenation zone; PA1 (d) maintaining hydrogenation conditions in the hydrogenation zone which are effective to maintain the reaction mixture in contact with the hydrogenation catalyst above its dew point; PA1 (e) passing the vaporous feed stream through the hydrogenation zone; and PA1 (f) recovering from the hydrogenation zone a product stream containing cyclohexanedimethano…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.