http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1473940-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d9f3ca41550d315642580237250c5b0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D315-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J21-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D315-00 |
| filingDate | 1974-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1977-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1473940-A |
| titleOfInvention | Process and catalyst for preparation of lactones |
| abstract | 1473940 Catalyst composition EASTMAN KODAK CO 4 Sept 1974 [4 Sept 1973 23 July 1974] 38654/74 Heading B1E [Also in Division C2] A catalyst for producing 2, 2-disubstituted propiolactones from isoanhydrides and formaldehydes consists of the metal oxide-silica gel complex formed by heating the calcined residue of a mixture of silica gel and a water soluble salt of tantalum, titanium, niobium or zirconium to a temperature of 650-1000‹C in the presence of water vapour. Suitably, the catalyst is formed by mixing a solution of the metal salt with the silica gel, evaporating away the water, calcining at 400-600‹C and then heating in water vapour. |
| priorityDate | 1973-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.