| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_44588a88f77b7374598280fde4fd81df
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fdc82abdab1d2e9e1706496749c1b116 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-29 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-86 |
| filingDate |
1960-04-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1961-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-872130-A |
| titleOfInvention |
Improvements in and relating to a process for preparing acetylsalicyclic acid anhydride |
| abstract |
Acetylsalicylic acid anhydride is prepared by adding a solution of acetylsalicylic acid chloride in a water-soluble organic solvent to an aqueous solution of a salt of acetylsalicylic acid, prepared in situ from an aqueous suspension of acetylsalicylic acid; working up may be effected by washing the resulting precipitate of acetylsalicylic acid anhydride with an aqueous solution of an alkali-metal carbonate or bicarbonate, and acidifying the filtrates and washing liquors to recover unreacted acetylsalicylic acid and the acetylsalicylic acid formed in the course of the process. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1461122-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6369260-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1038534-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1038534-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005009480-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1461122-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9615809-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9615809-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005009480-A2 |
| priorityDate |
1959-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |