Patent GB-1042891-A (GB)
Title: Bis-triazinylamino-stilbene derivatives and their use as optical brighteners
IPC: D06L3/12
Filed: 1963-02-01
Abstract: Detergent compositions comprise optical brightening agents of the general formula <FORM:1042891/C4-C5/1> wherein Z represents a hydrogen atom or a group imparting solubility in water, R1 represents a hydrogen atom or an alkyl or alkoxy radical, and X represents an -NH2 group or the radical of a primary or secondary aliphatic amine, with the proviso that when R1=H and Z=a sulphonic acid group then X=-NH2 or the radical of a primary or secondary aliphatic amine containing a sulphonic or carboxylic acid group.  Other components specified in examples are (i) sodium silicate, sodium hydroxide solution, alkylaryl sulphonate and hydrogen peroxide solution, and (ii) the condensation product of oleyl alcohol and about 10 mols. of ethylene oxide, polyphosphate, soap powder, sodium metasilicate, sodium perborate, magnesium silicate, carboxymethylcellulose and a conventional filler, e.g. sodium or potassium sulphate or carbonate. Reference has been directed by the Comptroller to Specification 987,922.ALSO:The invention comprises compounds of the general formula <FORM:1042891/C2/1> in which Z represents a hydrogen atom or a group imparting solubility in water, R1 represents a hydrogen atom or an alkyl or alkoxy radical, and X represents an -NH2 group or the radical of a primary or secondary aliphatic amine, with the proviso that when R1 = H and Z = a sulphonic acid group then X = -NH2 or the radical of a primary or secondary aliphatic amine containing a sulphonic or carboxylic acid group. The compounds may be prepared by reacting together, in any desired sequence, cyanuric chloride, an amino-stilbene derivative, an aminoaryl-b -hydroxyethylsulphone or an aminoaryl-b -hydroxyethylsulphone containing substituents in the ring, and a primary or secondary aliphatic amine.  Examples are given.  Reference has been directed by the Comptroller to Specification 987,922.ALSO:Optical brightening agents of the general formula <FORM:1042891/D1-D2/1> which Z represents a hydrogen atom or a group imparting solubility in water, R1 represents a hydrogen atom or an alkyl or alkoxy radical, and X represents an -NH2 group or the radical of a primary or secondary aliphatic amine, with the proviso that when R1=H and Z=a sulphonic acid group then p  X=-NH2 or the radical of a primary or secondary aliphatic amine containing a sulphonic or carboxylic acid group, may be employed for the optical brightening of foils, films, felts or textile materials for example fibres, filaments, flocks, fabrics or knit fabrics made of natural, regenerated or synthetic materials, as well as of leather and paper. Especially good effects are obtained with natural or regenerated cellulose.  The brightening agents may be used in association with detergents or rinsing or finishing agents or they may be added to the materials to be brightened during the production of such materials, for example, they may be added to wash lyes, brightening baths, bleaching baths and paper pulp.  Examples describe the use of the compounds to brighten (1) bleached cotton fabric, (2) desized crude cotton fabric, (3) paper, (4) polycaprolactam fabric, (5) white cotton poplin, (6) bleached nettle cloth, (7) bleached wool flannel, and (8) bleached cotton poplin impregnated with a urea-formaldehyde precondensation product and ammonium nitrate, the condensation of the resin being completed subsequently at 150 DEG C. to give a crease-resistant material.  Reference has been directed by Comptroller to Specification 987,922.