| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d790864d7d0c8638dc4d2029a5858478
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f65efcec44e75d2f4822ffb43eec3b61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_953e999ec3d2163642f8236ffb07525e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0d0c554480de22db1d2a7ad72925ccaf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b855cb07b2249070a8ba3d8ab747e44d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_456cc9076e96168c9c29bd372ac7927e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f0269a1ae7c9affca6220ed7911660d4 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-573
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-141 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-36 |
| filingDate |
2008-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2013-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85722cade63dc99b905140f017e8d19a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f8d2331bcb69b0ee53ccebe1f47debaf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e370aee0d3c13b1e7d324687aee6ed0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c15c1bd32aae09af64cbbfa8156e5ca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c587290fb8e324c168b6a06f582aa84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a25a2abf1fa1249855e2bcd007f80f24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1273e217c070089cf9c271971576d40e |
| publicationDate |
2013-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8461356-B2 |
| titleOfInvention |
Process for obtaining maleic anhydride by distillation |
| abstract |
What is described is a process for obtaining maleic anhydride by distillation from a solution of maleic anhydride in a high-boiling absorbent which has been obtained by gas phase oxidation of a hydrocarbon and at least partial absorption of the oxidation products into the absorbent, byn i) introducing the solution into the side of a feed column with a rectifying section disposed above the feed point and a stripping section disposed below the feed point, ii) providing an upper combining column which communicates with the upper end of the rectifying section and a lower combining column which communicates with the lower end of the stripping section, iii) providing a draw column which communicates with the upper combining column and the lower combining column, iv) drawing maleic anhydride off as a side draw from the draw column, and drawing off compounds having a lower boiling point than maleic anhydride at the top of the upper combining column and the high-boiling absorbent at the bottom of the lower combining column. nn The maleic anhydride obtained as a side draw has a low content of acrylic acid and acetic acid. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015014150-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10112886-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2015014148-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8932434-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9884264-B2 |
| priorityDate |
2007-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |