http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9540390-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_72c10e72e9443ea54260e0eeb2888abe http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a229caf40c7e56944a34bc461c9cfeb5 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04 |
| filingDate | 2013-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_54ac7bc90e843f36344948eaf84aa24a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb04fc0d41580f04da80b6ec2b261941 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d505c045dc0c2fe2e140cc2412d1694c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1124cb253ffe5b275f3dbb5f485ff497 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48250d36845db66c17ab148a194e1a1c |
| publicationDate | 2017-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-9540390-B2 |
| titleOfInvention | Method for manufacturing 1,4:3,6-dianhydrohexitol di(alkyl carbonate)s |
| abstract | The present invention relates to a process for the manufacturing of pure and substantially oligomers-free 1,4:3,6-dianhydrohexitol di(alkyl carbonate)s which comprises the steps of: a) Preparing a reaction mixture consisting of at least one dianhydrohexitol, at least 2 molar equivalents with respect to the amount of dianhydrohexitol present, of at least one dialkyl carbonate of formula R—O—C(═O)—O—R, where R has the same meaning indicated above, and from 0.01 to less than 0.1 molar equivalents of a transesterification catalyst with respect to the amount of dianhydrohexitol present; and b) Heating the reaction mixture up to its reflux temperature in a reactor preferably equipped with a rectification column comprising a number of theoretical distillation plates sufficient to separate continuously from the reaction mixture by fractional distillation the alcohol obtained or the azeotrope which the alcohol forms with the dialkyl carbonate present in the reaction mixture. The process comprises further recovering the transesterification catalyst from the reaction mixture and isolating the 1,4:3,6-dianhydrohexitol di(alkyl carbonate). |
| priorityDate | 2013-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 61.