http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9321784-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2efbe95965e682e179dfd266c9980505 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04 |
| filingDate | 2013-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c02d65697db1e3f1a0860a9dbc76054 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ebe161628eee9b38de6e83b0b94a043 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ebb6a3cfb274e194c5398e630b1fe86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_624ca636386923d29408c4f816d63290 |
| publicationDate | 2016-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-9321784-B2 |
| titleOfInvention | Hydrogenation of isohexide products for improved color |
| abstract | A process is described for making isohexides, comprising dehydrating one or more hexitols with an acid catalyst to form a crude dehydration product mixture including one or more isohexides, further processing the mixture to separate out one or more fractions of a greater purity or higher concentration of at least one of the isohexides, and hydrogenating at least one of a) the crude dehydration product mixture, b) a neutralized crude dehydration product mixture, following a neutralization of the crude dehydration product mixture, c) the product mixture following a neutralization step and further following a step to remove ionic species therefrom, d) a greater purity or higher concentration fraction, and e) a lesser purity or concentration fraction, by reaction with a hydrogen source in the presence of a hydrogenation catalyst. Hydrogenation improves the color and/or color stability of the material, especially of a finished isohexide product. |
| priorityDate | 2012-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.