Patent GB-903432-A (GB)
Title: New colouring process for textiles
Inventor: PARSONS BRIAN NEVILLE
IPC: C09B62/443
Filed: 1960-01-21
Abstract: Textile materials, e.g., of cotton, linen, viscose rayon, wool, silk, polyamides, polyacrylonitrile, polyesters, cellulose acetate or cellulose triacetate, are dyed or printed with an aqueous solution or suspension of a soluble or insoluble dyestuff, e.g., an azo, anthraquinone, nitro or phthalocyanine dyestuff, containing at least one group of the formula:-  <FORM:0903432/IV (b)/1> wherein A represents a substituted or unsubstituted alkylene radical, R represents a hydrogen atom or a substituted or unsubstituted alkyl radical, X represents -CO-or -SO2-, Y represents a halogen atom or a group -OZ where Z represents the residue of a mono- or poly-basic acid, and m and n each represents 1 or 2 and may be the same or different, the textile also being treated, before, during or after the application of the dyestuff, with an organic derivative of sulphur of the formula:- D-S-X wherein D represents a hydrogen or a metal atom and X represents an organic radical.  The textile material, particularly cellulose textile material, may also be treated with an acid-binding agent, before, during or after, the application of the dyestuff, although when the acid-binding agent is applied after the application of the dyestuff, the organic derivative of sulphur is applied before or together with the dyestuff.  Dyeing may be effected by padding or immersion at temperatures up to or above 100 DEG C.  The dyebath may contain the usual adjuvants, such as sodium chloride or sulphate, and anionic, cationic or non-ionic dispersing agents. Printing is followed by heating or steaming and the printing pastes may also contain urea, thiourea, ethanol, sodium-m-nitrobenzene sulphonate and the usual thickness and dispersing agents.  When the sulphur compound is applied separately from the dyestuff, it is applied as an aqueous solution or suspension.  The radical X of the sulphur compound of the above formula may be an alkyl, e.g., methyl, ethyl, propyl or butyl, a substituted alkyl, e.g., hydroxyethyl or carboxymethyl, a cycloalkyl, e.g., cyclohexyl, an aralkyl, e.g., benzyl or b -phenylethyl, an aryl, e.g. phenyl or naphthyl, a substituted aryl, e.g., sulphophenyl or chlorophenyl, or a substituted or unsubstituted heterocyclic radical, e.g., a thiazolyl, benzthiazolyl, naphthathiazolyl, pyridyl, furyl, benzoxazolyl, benzselenazolyl, pyrrolidyl, quinolyl, 6-nitro-benzthiazolyl, 5-sulphobenzthiazolyl or 5-chlorobenzthiazolyl radical. Alternatively X may represent a group:-  <FORM:0903432/IV (b)/2> wherein R1 and R11 each represent a substituted or unsubstituted hydrocarbon or heterocyclic radical, and R1 and R11 may together with the nitrogen atom N form a 5- or 6-membered heterocyclic ring.  Preferred sulphur compounds are the following:-thioglycollic acid, methyl mercaptan, phenyl mercaptan, sodium diethyldithiocarbamate, sodium- N-methyl- N-phenyldithiocarbamate, sodium pentamethylene-dithiocarbamate, potassium dipropyldithiocarbamate, sodium diphenyl-dithiocarbamate, potassium ethylxanthate, ethyltrithiocarbonate, sodium phenylxanthate, sodium salt of 2-mercaptobenzthiazole, potassium salt of 2-mercapto-b -naphthothiazole, 2-mercaptothiophene, 2-mercapto-4-methylthiazole, 2-mercapto-4-, 5-, 6- or 7-methylbenzthiazole, 2-mercapto- 6-nitrobenzthiazole, 2-mercapto-6- or 7-chlorobenzthiazole, 2-mercapto- 5-sulphobenzthiazole, 2-mercapto-4 : 5-benzo-1 : 3-thiazine, 2-mercaptobenzoxazole, 2-mercaptobenziminazole, 2-mercaptobenz-selenazole, 2-mercaptopyrrole, 2-mercaptopyrrolidine, 2-mercaptopyridine, 4-mercaptopyridine, 2-mercaptopyrimidine and 2-mercaptoquinoline. Numerous examples are given.  Specifications 587,467, 712,037, 733,471, 740,533, 768,241, 774,819, 776,265, 779,781, 779,818, 787,986, 845,567, 870,047, 881,737, 882,750, 885,681 and 885,814 are referred to.