| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-055
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-44 |
| filingDate |
2000-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb02546db6a91e60de489a188b60562e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df9f93310af8d3fba7c17573afc81439
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07c26cbdc4e425b94b736d3fe1689a3b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df97db6f37e9dd7509b8e0f45e76e9f8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86e220773df5abd7337c165bd1cad264 |
| publicationDate |
2000-10-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2000281617-A |
| titleOfInvention |
Acrylic acid purification method |
| abstract |
PROBLEM TO BE SOLVED: To provide an operating condition capable of stably operating a distillation column by preventing polymerization of acrylic acid during dehydration distillation of an aqueous solution of acrylic acid. SOLUTION: When purifying acrylic acid by performing dehydration distillation from an aqueous solution of acrylic acid using a dehydration distillation column, A method for purifying acrylic acid, wherein a distillation column having three or more theoretical plates is used as the dehydration distillation column, and the operating temperature of a portion corresponding to the second theoretical plate is 50 to 78 ° C. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005085167-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7319168-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003238485-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9718756-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101536035-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2012153717-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005336122-A |
| priorityDate |
1999-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |