| Predicate |
Object |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D315-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-90 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D315-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 |
| filingDate |
1990-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1999-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80630c04613d19a6240df8fe8107e803
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_deefb4ccc73f525d5cc6b6de957d5d33
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2794bd68b6c804b0661118585ed79b9f |
| publicationDate |
1999-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2007048-C |
| titleOfInvention |
Process for the reduction of the polymer portion in the dimerization of ketene |
| abstract |
An improved process is disclosed for producing diketene by the dimerization of ketene obtained from acetic acid by pyrolysis. The polymer portion in the diketene is reduced by the addition of sulfur dioxide to the ketene gas or to the dimerization reaction medium. |
| priorityDate |
1989-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |