| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af99df08b153738cd418446a75d09bfc |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-10 |
| filingDate |
1970-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1971-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7dd3e640e7fd93e5010c55aacecdb8c3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_02deae5222a9695855382d9a7a42e044 |
| publicationDate |
1971-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3631067-A |
| titleOfInvention |
Preparation of coumarin |
| abstract |
IN THE PROCESS FOR PREPARING COUMARIN BY REACTING SALICYLALDEHYDE WITH AN ALKALI METAL ACETATE AND ACETIC ANHYDRIDE, SEPARATION OF THE PRODUCT IS IMPROVED WITHOUT DETRIMENTALLY AFFECTING THE YIELD BY MAINTAINING THE MOLAR CONCENTRATION OF ALIALI METAL ACETATE AT OR BELOW THE CONCENTRATION OF THE TOTAL SALICYLALDEHYDE EMPLOYED IN THE REACTION AND THEN SEPARATING THE COUMARIN FROM THE REACTION MIXTURE BY DISTILLATION. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106866598-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106187968-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2327437-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4036854-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102993146-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102993146-A |
| priorityDate |
1970-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |