Patent GB-923122-A (GB)
Title: New polytriazine optical bleaching agents and processes for their preparation
Inventor: FREY RAYMOND
IPC: C07D251/54
Filed: 1959-06-10
Abstract: A washing powder comprises sodium dodecyl-benzene-sulphonate, sodium carbonate, sodium polyphosphate, carboxymethyl cellulose and an optical bleaching agent of the formula <FORM:0923122/III/1> wherein A represents a 1, 3, 5-triazinyl radical, S and S1 represent water-solubilizing groups such as sulphanamido, sulpho, carboxyl or salts thereof, X represents a sulphur atom, a substituted or unsubstituted amino group or a divalent saturated or unsaturated hydrocarbon group without water-solubilising groups and joined to the two triazinyl radicals by means of terminal oxygen atoms or terminal amino groups, Y represents an amino, acylamino or substituted or unsubstituted ureido group, or a group -NH-A (RR1) or -NH-A(R)-X-A (RR1), the substituents R and R1 represent halogen atoms, hydroxyl, amino or substituted amino groups, or alkoxy, aryloxy or alkylthio groups, and Z has the same significance as R and R1 or represents a group of the formula <FORM:0923122/III/2>ALSO:The invention comprises optical bleaching agents of the formula:-  <FORM:0923122/IV(a)/1> wherein A represents a 1,3,5-triazinyl radical, S and S1 represent water-solubilising groups such as sulphonamido, sulpho, carboxyl or salts thereof, X represents a sulphur atom, a substituted or unsubstituted amino group or a divalent saturated or unsaturated hydrocarbon group without water-solubilising groups and joined to the two triazinyl radicals by means of terminal oxygen atoms or terminal amino groups, Y represents an amino, acylamino or substituted or unsubstituted ureido group, or a group -NH-A(RR1) or -NH-A(R)-X-A(RR1), the substituents R and R1 represent halogen atoms, hydroxyl, amino or substituted amino groups, or alkoxy, aryloxy or alkylthio groups and Z has the same significance as R and R1 or represents a group of the formula:-  <FORM:0923122/IV(a)/2> The above products may be obtained by stepwise synthesis from suitably solubilised 4,41-diamino-stilbenes or 4-amino-41-nitrostilbenes; cyanuric halides; amines, diamines, dialcohols or diphenols, and amines, alkoxides, phenates and mercaptides; intermediate reduction of the 41-nitro group enabling the preparation of unsymmetrical molecules.ALSO:Natural and synthetic fibres, fabrics, yarns, threads and films such as those based on cotton, nylon and natural or regenerated cellulose; paper pulp; light leathers and straw are optically bleached by dyeing or foularding with aqueous solutions of or by treatment with finishing baths, aqueous solutions, washing agents or printing pastes containing an optical bleaching agent of the formula <FORM:0923122/IV(a)/1> wherein A represents a 1,3,5-triazinyl radical, S and S1 represent water-solubilising groups such as sulphonamido, sulpho, carboxyl or salts thereof, X represents a sulphur atom, a substituted or unsubstituted amino group or a divalent saturated or unsaturated hydrocarbon group without water-solubilising groups and joined to the two triazinyl radicals by means of terminal oxygen atoms or terminal amino groups, Y represents an amino, acylamino or substituted or unsubstituted ureido group, or a group -NH-A(RR1) or -NH-A(R)-X-A(R R1) the substituents R and R1 represent halogen atoms, hydroxyl, amino or substituted amino groups, or alkoxy, aryloxy or alkylthio groups, and Z has the same significance as R and R1 or represents a group of the formula <FORM:0923122/IV(a)/2>