| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fb78b459e21bb4fd52850a12cab27387 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-46 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-44 |
| filingDate |
2000-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc1ee2f7911ed5d5cc8f62d1db7d01cb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b4bef9732bcc091993f3d600d791d3e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cade29ec32c9e593b7b8a2967dabfb5e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b885e7c2a94d3b17ac9e1f0a9da3c91
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_243358372ab5538429a56cc113c9fcaf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e8ddccc15381c1525663207a087fa4aa |
| publicationDate |
2000-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2000273065-A |
| titleOfInvention |
Preparation of (meth) acrylic acid |
| abstract |
(57) [Summary] (Modified) [Problem] To remove undesired components from a part thereof in a stripping column, and then recycle to an acrylic acid absorption column, A method for preparing acrylic acid using an aqueous stream containing recycled wastewater is provided. A) an absorption tower comprising i) a mixed product gas obtained by catalytically oxidizing one or more hydrocarbon materials with a gas containing molecular oxygen; and ii) recycled wastewater and less than 3.0% by weight. Providing an aqueous stream comprising acetic acid; B) contacting the mixed product gas with the aqueous stream in the absorption tower to form an aqueous (meth) acrylic acid stream; C) distilling the aqueous (meth) acrylic acid stream. Feeding the column, where it is subjected to azeotropic distillation in the presence of at least one distillation solvent to form a substantially water-free (meth) acrylic acid solution. Preparation of acid. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007510636-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009286776-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2013049665-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007191435-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4687843-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011231133-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002179618-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009286775-A |
| priorityDate |
1999-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |