| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7f9af914ed2fb00cd4f1b8b1a28964e4 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-487 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-487
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-07 |
| filingDate |
2000-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2006-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b75361ff6d4ca05ebc119c3c219d228e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_baf32fc157bced9131e974bdf45fecd6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_934c4992634c7d6706de0301f206edb7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab10beacc2541c0ff40cb7675d06f524
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e769949d28de33a91a8bf41df8f16238
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d6a716ecd0898c8af40a8e5fb04ced6d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0dd1449cd551b7fc1c001312a3dd877b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_adb037f25d2e6d5e7430b596a0b7a957
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2f128993809ad3e752236267afae2ff5 |
| publicationDate |
2006-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7048834-B2 |
| titleOfInvention |
Method for purification of acrylic acid |
| abstract |
The present invention provides an industrially easy and economical method for purification of acrylic acid which enables to efficiently eliminate impurities from a crude acrylic acid containing aldehydes as the impurities while the formation of acrylic acid polymer is inhibited. The method for purification of acrylic acid includes the step of distilling a crude acrylic acid which is charged with an aldehyde treatment chemical, wherein the concentration ratio of furfural to acrolein by weight in the crude acrylic acid is adjusted so as to satisfy the following equation:n n(furfural concentration by weight)/(acrolein concentration by weight)≦100. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020223048-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10961179-B2 |
| priorityDate |
1999-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |