http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-684386-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_14f86e164bb6ab1032c519b42ff81a64 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-143 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-14 |
| filingDate | 1951-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1952-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-684386-A |
| titleOfInvention | Process for preparing methine dyes |
| abstract | A dye of the general formula <FORM:0684386/IV (c)/1> wherein R, R1 and R2 are lower alkyl groups, is prepared by heating together substantially equimolar amounts of a compound of the formula <FORM:0684386/IV (c)/2> and a compound of the formula CN-CH2COOR with an amount of an alkaline catalyst sufficient to cause the condensation to go to completion, in the absence of a solvent, at a temperature sufficient to maintain the starting materials and reaction product in a liquid condition until the condensation is completed. In example 1, a dye is prepared by adding piperidine to warm p-diethylaminobenzaldehyde and then ethyl cyanoacetate dropwise, and stirring with heating. The dye may be milled with "Flotite" Dry, Aquarol SO, and water to give a product for dyeing. In example 2, the procedure is similar, using methyl cyanoacetate. The aldehyde may also be p-dipropylamino-, p-dibutylamino-, p-methylethylamino-, or p-methylbutylamino-benzaldehyde, and the cyanoacetate may also be propyl or butyl cyanoacetate. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9573888-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9296728-B2 |
| priorityDate | 1950-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.