http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7220881-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1d29f7ac2c7f9be9f7dae1a83bbb5c92 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-57 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-56 |
| filingDate | 2002-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2007-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9b7980294b8684714818e31c391879e1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ed10901376ff6c99e169f8adb4031a5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f25fd26252143979eed0706f7aeb3e89 |
| publicationDate | 2007-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-7220881-B2 |
| titleOfInvention | Process for production of acid anhydride |
| abstract | According to the present invention there is provided a process for producing an acid anhydride by reacting a carboxylic acid, preferably a carboxylic acid having a polymerizable group, with a sulfonyl halide compound in the presence of a tertiary amine or in the presence of a tertiary amine and an inorganic base, wherein the tertiary amine or the tertiary amine and the inorganic base are used in an amount of 0.9 to 1.2 equivalents relative to the acid generated from the sulfonyl halide compound. |
| priorityDate | 2001-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 675.