http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-864093-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_820b211e52b3c4c5c2e6b6b7dfb772f0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B45-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B45-14 |
| filingDate | 1957-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a1c2be3609875e0ec72a385818fa7a4b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f11282544aeae5d98670497d22a99b44 |
| publicationDate | 1961-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-864093-A |
| titleOfInvention | New metallised mono-azo dyestuffs |
| abstract | The invention comprises metallized mono-azo dyestuffs which are symmetrical chromium, cobalt, nickel or iron complexes containing an average of 1 to 1,2 atoms of metal per two molecules of dyestuff, free from sulphonic acid and sulphonamide groups which are derived from dyestuffs of the formula: <FORM:0864093/IV(c)/1> where R1 is a benzene or naphthalene residue which may be further substituted by halogen, alkyl, nitro or acylamino groups, X is vicinal to the azo linkage and is OH, OCH3 or OC2H5, the alkyl groups being removed during metallization, R2 is either (a) a naphthalene residue which may be further substituted by halogen, acylamino or SO2-alkyl in which the alkyl contains one to three carbon atoms and which has an amino, hydroxyl or NH aryl group vicinal to the azo, or (b) a benzene residue which may be further substituted by alkyl or acylamino groups and which has a hydroxyl group p vicinal to the azo or (c) a keto methylene residue, bound to the azo linkage vicinal to the enol group in which case the general formula is <FORM:0864093/IV(c)/2> and R3 is an aryl group and in which the group -CO-R3-COOH is aromatically bound. The invention further comprises metallized dyestuffs which are unsymmetrical chromium, cobalt, nickel or iron complexes of one of the azo dyestuffs of the above formula (I) and a monoazo dyestuff free from sulphonic acid and sulphonamide groups and belonging to the benzene-azo-benzene, benzene-azo-naphthalene, benzene-azo-pyrazolone or benzene-azo-acetoacetyl aryl amide series. The dyestuffs are metallized by treating one or more dyestuffs of the formula (I) or a dyestuff of the formula (I) and one of the mono-azo-dyestuffs specified above with an agent yielding chromium, cobalt, nickel or iron in an amount such that the metallized dyestuff contains 1 to 1,2 atoms of metal per molecule. The metallized dyestuffs colour leather, hair, wool, silk, casein, superpolyamide and superpolyurethane fibres a variety of shades. The Provisional Specification relates to metallized dyestuffs derived from dyestuffs of the formula (I) wherein X is OH, R1 is as above, R2 is either (a) a benzene or naphthalene residue which may be further substituted with halogen, alkyl, acylamino or -SO2-alkyl and which has either an amino, hydroxy, -NH alkyl or -NH aryl group ortho to the azo linkage, or (b) a keto methylene residue bound to the azo linkage vicinal to the enol group, R3 is alkyl or aryl and in which the group -CO-R3-COOH is bound to R1 or R2. Some additional examples are given. Specification 649,656 is referred to. |
| priorityDate | 1957-10-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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Total number of triples: 35.