http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3970691-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_94fff2216f5a387cfbeff2f1a7331cd4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08H99-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-683 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08H99-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-63 |
| filingDate | 1972-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1976-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_096d67a2958f16e8ff8e0921a3debca9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b3f3c421170d0f79c4677a2e959b6a9c |
| publicationDate | 1976-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3970691-A |
| titleOfInvention | Etherification of bark extracts |
| abstract | A derivative of coniferous tree barks is produced by reacting at elevated temperatures an alkaline polyphenolic solution of a coniferous bark extract in the proportion of from 0.1, and preferably from 0.5 to 8.0 moles of a carbonylactivated halocompound per mole of monomeric unit in the polyphenol of the formula R'-CH-C-R'' ¦ PARALLEL XO or with a cyano-activated halocompound of the formula R'-CH-C 3BOND N ¦ X wherein R' is H, HC=O, or R-c=O where R is alkyl or aryl; X is halogen and R'' is alkyl, OH, oxyalkyl, aryl or OM in which M is a metal. The starting materials are the alkaline extracts resulting from the digestion of coniferous tree barks with an alkaline aqueous solution or preferably the sulfonated acid extracts of such barks. The reaction products are etherified polyphenolic compounds which are watersoluble and possess chelating characteristics. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5024690-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4590299-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0001345-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5007953-A |
| priorityDate | 1972-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 74.