http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-395006-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_caf42e0fedd50ea137af678ab4925aa6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ee0bacab5a7576a6a3244747f6ea99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B31-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B31-04 |
| filingDate | 1931-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1933-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-395006-A |
| titleOfInvention | New disazo dyestuffs and their application |
| abstract | Disazo dyestuffs are manufactured by coupling a diazotized aniline or naphthylamine or substitution derivative thereof, not being a nitro, hydroxy, sulphonic or carboxylic derivative, with a 2 : 5-dialkoxyaniline, rediazotizing and coupling with an amine of the benzene or naphthalene series devoid of hydroxyl, carboxylic or sulphonic groups in the aryl nucleus. The products dye cellulose esters and ethers clear violet-red to blue-violet shades. The dyestuffs are applied in the form of an aqueous suspension. Examples describe the preparation of the dyestuffs: (1) p-chloro-aniline --> 2 : 5 - dimethoxyaniline --> m-phenylenediamine, which dyes cellulose acetate bordeaux shades; (2) o-chloroaniline --> 2 : 5-dimethoxyaniline --> ethyl-a -naphthylamine, which dyes cellulose acetate bluish-violet shades; (3) 5-chloro-o-toluidine --> 2 : 5-dimethoxyaniline --> a -naphthylamine, which dyes cellulose acetate violet shades. In an example of dyeing, the products are applied to cellulose acetate from a bath containing a naphthalene sulphonic acid-formaldehyde condensation product. Other components specified are: first components: p-phenetidine, o-anisidine and b -naphthylamine; end components: 4-chloro-m-phenylenediamine and m-toluylenediamine. Samples have been furnished under Sect. 2 (5) of the following dyestuffs: (1) a -naphthylamine --> 2 : 5-dimethoxyaniline --> a -naphthylamine; (2) a -naphthylamine --> 2 : 5 - dimethoxyaniline --> ethyl - a - naphthylamine; (3) a - naphthylamine --> 2 : 5 - dimethoxyaniline --> m - phenylenediamine; (4) b -naphthylamine --> 2 : 5-dimethoxyaniline --> m-phenylenediamine; (5) b -naphthylamine --> 2 : 5 - dimethoxyaniline --> a - naphthylamine. Specification 224,077, [Class 2 (iii), Dyes &c.], is referred to. |
| priorityDate | 1931-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.