http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-493314-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bc040b5f79231c2f292927e79b52c6bb http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b04f5b6a02051c94d6eaf190b751ed2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B55-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B55-00 |
| filingDate | 1937-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1938-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-493314-A |
| titleOfInvention | Improvements in the manufacture and production of azomethine dyestuffs containing metal |
| abstract | Dyestuffs containing chromium are made by causing substances supplying chromium to act simultaneously or subsequently on compounds obtained by reacting aromatic o-hydroxyamino compounds with o-hydroxycarbonyl compounds of the general formula <FORM:0493314/IV/1> in which R is an aromatic radicle and R1 is hydrogen or an organic radicle, the starting materials being so chosen that at least one contains at least one acid group. The products which are azomethine dyes containing metal may be used for dyeing wool, silk, leather, cotton, viscose and acetate artificial silk or for colouring lacquers of artificial compositions. In examples: (1) 4-nitro-2-aminophenol-6-sulphonic acid is boiled with salicyl aldehyde in aqueous chromium formate solution with or without sodium acetate; 6-nitro-2-aminophenol-4-sulphonic acid, 4-chlor-2-aminophenol-6-sulphonic acid, 2-aminophenol-4-sulphonic acid, 4 - methyl - 2 - aminophenol - 6 - sulphonic acid, 4 - acetamino - 2 - aminophenol - 6-sulphonic acid, 2 - aminophenol - 4 : 6 - disulphonic acid, 2 : 3 - aminonaphthol - 6-sulphonic acid or 1 : 2-aminonaphthol-4-sulphonic acid may also be used; (2) salicyl aldehyde is condensed with 2 : 6-diaminophenol-4-sulphonic acid as in (1); (3) 2-hydroxybenzaldehyde - 5 - sulphonic acid is similarly condensed with 2-aminophenol; 4 - chlor - 2 - aminophenol, 4 - nitro - 2-aminophenol, 4 : 6 - dinitro - 2 - aminophenol, 6 - nitro - 4 - chlor - 2 - aminophenol, 2 : 6-diamino - 4 - methylphenol and 2 - hydroxy-3 - aminoanthraquinone may also be used; (4) 2 - hydroxybenzaldehyde - 5 - sulphonic acid and 3 : 31-dihydroxy-4 : 41-diaminodiphenyl are condensed as in (1); (5) 4-nitro-2-aminophenol-6-sulphonic acid and 2-hydroxy-1-naphthaldehyde are similarly condensed; 1 : 2 - aminonaphthol - 4 - sulphonic acid may be also used and the aldehyde may be replaced by 2 : 1- or 1 : 2-hydroxynaphthaldehyde sulphonic acids; (6) the dyestuff 4-nitroaniline-2-sulphonic acid --> salicyl aldehyde or 1 - hydroxy - 2 - naphthaldehyde is condensed as in (1) with 4-nitro-2-aminophenol-6-sulphonic acid; (7) 2 : 4-dihydroxybenzaldehyde is heated with 4-nitro-2-aminophenol-6-sulphonic acid in aqueous chromium formate solution; (8) the dyestuff 4-nitro-2-aminophenol - 6 - sulphonic acid --> 2 : 4-dihydroxybenzaldehyde is condensed with 4 - nitro - 2 - aminophenol - 6 - sulphonic acid and then boiled with chromium formate in aqueous solution. |
| priorityDate | 1937-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.