http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-244267-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_deb2df9d17df8999bb1f322a5a888970 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_904aa0b09af7d43f8b91c624c23babdc http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8d045d98641e3b3dd69e3e4d6ddcfdc3 |
| filingDate | 1924-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1925-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-244267-A |
| titleOfInvention | Improvements in dyeing cellulose acetate or materials containing it |
| abstract | Compounds, which are dyes for cellulose acetate, are obtained from mono-, di-, or polyamino-anthraquinones or their derivatives by complete acylation with non-aromatic acyl groups followed by nitration. The products may further be reduced or hydrolized. In examples, 1.8- and 1.5-diacetyldiaminoanthraquinones are mononitrated and the products recrystallized from chloroform and the mononitro-1.8-diacetyldiamino compound is reduced with stannous chloride and hydrochloric acid to obtain the diacetyltriamino derivative or hydrolyzed with concentrated sulphuric acid to obtain the nitro-1.8-diaminoanthraquinone; 1.5- and 1.8-diacetyldiaminoanthraquinones are dinitrated and reduced or hydrolyzed. The dinitration product of b -acetylaminoanthraquinone, the 2- and 4-nitroanthraquinonylurethanes and their products of reduction or hydrolysis are also referred to. Specifications 211,720, 214,112, [both in Class 15 (ii), Dyeing, Processes &c. for], and 224,077, are referred to.ALSO:Cellulose acetate and materials containing it are dyed directly with or without the use of a dispensing agent, such as that of Specification 224,077, Turkey red oil or the like, with the products obtained from mono-, di-, or polyamino-anthraquinones or their substitution products (excepting sulphonic acids) by complete acylation with non-aromatic acyl groups followed by nitration or with the compounds obtained by hydrolyzing or reducing such products. In examples diacetyl-1 : 8- or -1 : 5-diaminoanthraquinone is mono-nitrated and the products recrystallized from chloroform, brown shades being obtained on acetate silk with both compounds; the diacetyltriaminoanthraquinone, obtained by reducing with stannous chloride and hyldrochloric acid the mononitrodiacetyl-1 : 8-diaminoanthraquinone, gives crimson shades; and the nitro-1 : 8-diaminoanthraquinone obtained by hydroylsis of the same compound in strong sulphuric acid yields red shades. The dinitro-derivatives of 1 : 5- and 1 : 8-diacetyldiamino-anthraquinones have little or no affinity for acetate silk but useful dyes are obtained by reducing or hydrolyzing them. Dinitro-b -acetylamino-anthraquinone yields brown shades, while 2- and 4-nitroanthraquinonylurethanes, the nitroamines obtained by their hydrolysis, and the amino-urethanes obtained by reduction all give good results. Specifications 211,720 and 214,112 also are referred to. |
| priorityDate | 1924-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.