Patent GB-1007752-A (GB)
IPC: C09B62/44
Filed: 1962-05-07
Abstract: Water-soluble dyestuffs which contain the grouping <FORM:1007752/C4-C5/1> and at least one of the groupings -SO2-CH2-CH2-OY, -SO2-CH = CH2 or -SO2-CH2-CH2-X wherein X represents a halogen atom and Y the radical of a polybasic acid are fixed on fibrous textile materials in the presence of an alkaline agent. The specified polybasic acids from which Y is obtained are sulphuric, phosphoric and boric acid and benzene- or naphthalene-polysulphonic or polycarboxylic acids.  The dyestuffs may contain as water-solubilizing groups sulphonic or carboxylic acid or sulphonic acid amide groups and may be azo dyes and complex metal compounds thereof, e.g. the Cu, Co and Cr compounds, phthalocyanine dyes and their complex metal compounds, e.g. the Cu and Ni compounds, anthraquinone, dioxazine, azine, triphenylmethane and stilbene dyestuffs.  The dyestuffs may be prepared by first reacting 1 mol cyanuric chloride with 1 mol amino-aryl-b -hydroxyethylsulphone or the sulphuric acid ester thereof, amino-aryl-vinylsulphone or an amino-aryl-b -chloro-ethyl-sulphone and second with 1 mol dyestuff containing an amino group which can be acylated.  If the b -hydroxyethylsulphone group has been introduced this must then be converted into the monoester of a polybasic acid.  In the case of azo dyes the above procedure may be modified so that a coupling or diazo component is first condensed with cyanuric chloride, di- or tri-chloropyrimidine and/or the amino-aryl-sulphone compound and then coupled with the appropriate azoic component. The dyes may be subsequently metallized.ALSO:Fibrous textile materials, especially of natural or regenerated cellulose, wool, silk or polyamide, are dyed or printed by applying water-soluble dyestuffs which contain the grouping <FORM:1007752/D1-D2/1> and at least one of the groupings -SO2-CH2-CH2-OY, -SO2-CH=CH2 or -SO2-CH2-CH2-X wherein X represents a halogen atom and Y the radical of a polybasic acid and fixing the dyestuff in the presence of an alkaline agent.  The specified polybasic acids from which Y is obtained are sulphuric, phosphoric and boric acid and benzene- or naphthalene-polysulphonic or polycarboxylic acids.  The dyestuffs may contain as water-solubilising groups sulphonic or carboxylic acid or sulphonic acid amide groups and may be azo dyes and complex metal compounds thereof, e.g. the Cu, Co and Cr compounds, phthalocyanine dyes and their complex metal compounds, e.g. the Cu and Ni compounds, anthraquinone, dioxazine, azine, triphenylmethane and stilbene dyestuffs.  The dyes may be applied by direct dyeing from a long liquor containing an alkali and fixing by raising the temperature or preferably by padding.  The alkali may be applied simultaneously with, before or after the dyestuff and may be sodium hydroxide, carbonate, bicarbonate, trichloracetate, triphosphate or the corresponding potassium and alkaline earth compounds.  Fixation may be achieved by steam, hot salt bath or dry heating at 18-120 DEG C., if desired, with intermediate drying.  Printing pastes may further contain the thickening agents sodium alginate, methyl cellulose, starch ether or an amulsion thickening, urea and dispersing agents. Furthermore the dyes may be applied and fixed by padding through a hot padding liquor at 50-100 DEG C. which liquor may also contain electrolytes.  Examples are given.