http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-973926-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4eacb0405869fef7a8f1c516085f2682 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B69-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B69-00 |
| filingDate | 1962-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1964-11-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-973926-A |
| titleOfInvention | Improvements in or relating to isothiuronium salts of bromohydrin ether dyestuffs |
| abstract | The invention comprises dyestuffs of the formula <FORM:0973926/C4-C5/1> wherein Z is a water-insoluble dyestuff moiety of the azo, anthraquinone, phthalocyanine or nitro series; R1 and R2 as individual substituents, are hydrogen or lower alkyl containing from 1 to 6 carbon atoms or, taken collectively, represent an alkylene bridge having 2 or 3 carbon atoms, said bridge connecting the N atoms to which R1 and R2 are attached; R3 and R4 are hydrogen or lower alkyl containing from 1 to 6 carbon atoms and n is an integer from 1 to 4. The dyes are prepared by reacting one mole of appropriate hydroxyl-containing dye with at least one mole of epibromohydrin per hydroxyl group to form a water insoluble bromohydrin ether dye which is converted to the water-soluble isothiuronium salt by reaction with thiourea. Alternatively the 2-hydroxy-3-bromopropoxy intermediates may be prepared by reacting the hydroxy compounds used as starting materials with allyl chloride or bromide and reacting the product with hypobromous acid. The dyes are suitable for cellulosic textile materials, silk, wool and nylon. The dyes are applied in aqueous solution, optionally as a thickened printing paste, in the presence of acid-binding agent. Representative of the processes described in examples are those in which epibromohydrin is heated with 2-methoxy-5-nitroaniline --> b -naphthol and the product reacted with thiourea (I); 4,8-dianilino-anthraruifin is condensed with epibromohydrin and the product reacted with N : N : N1 : N1-tetramethyl thiourea (X); 2-nitroquinazarin is condensed with epibromohydrin and the product reacted with thiourea; copper tetra-(4)-p-hydroxyphenoxyphthalocyanine is condensed with epibromohydrin and the product is reacted with N : N : N1:N1-tetramethylthiourea (XIX); and 5 - (2:4 - dinitrophenylamino) - 2 - naphthol is reacted with epibromohydrin and the product is reacted with N,N,N1-trimethylthiourea (XXI). Extensive lists of starting materials are furnished. |
| priorityDate | 1961-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.