http://rdf.ncbi.nlm.nih.gov/pubchem/patent/MY-176950-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_008c9107ff464e201e724ad32b7630cc |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D15-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C31-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J38-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-009 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C1-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J29-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J29-90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-146 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-065 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D1-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-10 |
| filingDate | 2015-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05dd319bcc9f99ea00a8512d1324a5d6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_60b8b162558e42f38a88431e4087e6df http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7239c509342d85058102b258cf21777b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac93c27da64ac1bf3fea7b56e2c34d42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1098dedb0ecd0b931442f0b28c82d3e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9e3a4d7f9959ccf31134cbe03b1b739 |
| publicationDate | 2020-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | MY-176950-A |
| titleOfInvention | Separating method for polyol mixtures with close boiling points |
| abstract | This invention discloses an approach for the separation of the close-boiling mixture of polyols. The raw material is ethylene glycol (13) containing miscellaneous polyols (such as 1,2-propyleneglycol and 1, 2-butanediol) (12). Over an acid catalyst, these miscellaneous polyols (12), through (1) a dehydration reaction, (2) pinacol rearrangement , and (3) acetalization or kietalization reaction, are converted into aldehydes (small amounts), acetals, and ketals (trace amount) , which are simultaneously and readily separated via distillation. Meanwhile, after the reaction, the mixture is further separated to obtain an ethylene glycol (13) product at a high purity. The invention provides a technique to remove the miscellaneous polyols (12) from ethylene glycol (13) via liquid-phase dehydration reactions under mild conditions, with low energy consumption. lln particular, this approach is markedly effective for the removal of 1,2-butanediol that is difficult to be removed via conventional techniques. The purity of the resulting ethylene glycol (13) product is high, and value-added acetals or ketals are co-produced. In addition , a certain amount of acetaldehyde (22), propanal 23), acetone (24), etc., can also be produced as raw chemical materials. This invention is a green and environmentally sound technique to convert the crude ethyl,ene glycol (13) product that is generally difficult to be separated into high-purity ethylene glycol (13) and other chemical products. |
| priorityDate | 2014-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.