http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1503221-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8b919a09598a02c07e8429b1441b76e1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D207-337 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-337 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C381-00 |
| filingDate | 1975-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1978-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1503221-A |
| titleOfInvention | Preparation of anhydrides |
| abstract | 1503221 Mixed anhydrides of carboxylic and sulphonic acids ETHYL CORP 6 March 1975 [18 March 1974] 9433/75 Heading C2C Mixed anhydrides of aromatic carboxylic acids and sulphonic acids are obtained by reacting the anhydride of the aromatic acid with the sulphonic acid in a solvent in which the aromatic acid is insoluble. The example illustrates the preparation of p-toluic methane sulphonic anhydride. The process avoids high temperatures and distilling off the acid formed in the reaction. |
| priorityDate | 1974-03-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 19.