http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-900359-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06P5-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06P5-12 |
| filingDate | 1960-02-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1962-07-04^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-900359-A |
| titleOfInvention | Process for producing white and colour resist effects on natural or regenerated cellulose fabrics |
| abstract | White or coloured resist effects are produced on fabrics of natural or regenerated cellulose fibres by padding the fabric with a liquor containing a leuco sulphuric acid ester of an anthraquinoid or indigoid vat dyestuff and a salt, preferably an alkali metal or alkaline earth metal salt, of nitrous acid, then drying and overprinting with a paste containing a compound of the formula:-X-NH-Y wherein X represents a hydrogen atom or a phenyl radical which may be substituted by alkoxy or amino groups and Y represents a primary amino group; a sulphonic acid, sulphonamide, thiosulphonamide or sulphonic acid alkyl ester group; a carboxyalkyl group; a hydroxyl group; a phenyl radical which may be substituted by halogen atoms, or by nitro, amino, imino, alkoxy, sulphonic acid, sulphonamide, thiosulphonamide, carboxylic acid, amide or thioamide groups or by an N-anilino radical that may also be substituted by carboxylic acid, amide, thioamide, sulphonic acid, sulphonamide or thiosulphonamide groups; or a benzoyl group or a thiobenzoyl group; or where appropriate, a metal or amine salt of the above compound, the compound serving to destroy the nitrite and to yield a white resist effect, coloured resist effects being obtained by also incorporating in the paste, a vat dyestuff and a reducing agent and development of the leuco ester being finally effected by treatment with dilute sulphuric acid, if necessary, particularly when a coloured resist effect is to be obtained, following an intermediate steaming operation. Specified compounds of the above formula are hydrazine, urea, thiourea, hydroxylamine, diphenylamine, p-amino-diphenylamine, aniline and its halogen substitution products, p-nitraniline, anisidine, phenylglycine, p-methoxyphenylglycine, p-aminophenylglycine sulphanilic acid, anthranilic acid, 3- or 4-aminobenzoic acid, 2- or 3-aminobenzene sulphonic acid or the salts, esters, amides or thioamides thereof, phenylhydrazine, phenylhydrazine p-sulphonic or -carboxylic acid, p-phenylhydrazine-sulphonic acid-methyl or -ethyl ester, benzoic acid amide and amidosulphonic acid or esters thereof. Specified reducing agents for use in the paste together with vat dyestuffs are various aldehyde-sulphoxylates and thiourea dioxide. The paste may also contain the usual auxiliary fixing agents for vat dyestuffs such as glycerine, urea, triethanolamine, and anthraquinone. Examples are given. |
| priorityDate | 1959-02-05^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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