Abstract: New coupling or shading (nuance) components are described which in combination with pertinent developers are used for dyeing of hair. These coupling components are dinitropyridine derivatives of the general formula: ##STR1## whereby the substituents X, Y, R.sub.1 and R.sub.2 have the meaning given.

Abstract: The invention relates to security fibers and other allied materials made luminescent by a dyeing process employing rare-earth compounds and their applications in fiduciary documents and other materials requiring authentication.

Abstract: The invention provides a process for the exhaust dyeing with a reactive dyestuff of a textile material comprising cellulosic fibres, which process comprises the step of adding to the dyebath containing the reactive dyestuff, simultaneously the salt and the alkali in specified quantities metered per unit time so as to give a substantially linear exhaustion of the dyebath.

Abstract: Processes for dyeing, print-dyeing and differentially dyeing smooth-dry cellulose containing fabric are disclosed. Cellulose containing fabric is treated with a solution of crosslinking agent and a reactive additive which can be either polyethylene glycol or choline quaternary. The resultant fabric can then be dyed with a cellulosic dye. Print-dyeing is accomplished by selective application of a choline quaternary to a fabric padded crosslinking agent or by printing with a combination of crosslinking agent and choline quaternary on an untreated cellulosic fabric. These treatments are then followed by curing and dyeing. Differential dyeing is accomplished by first treating separate yarns with different solutions containing crosslinking agent with and without choline quaternary, drying, knitting, curing and dyeing the knitted fabric.

Abstract: A cellulosic fabric is treated with a crosslinking agent selected from the group consisting of: an adduct from an amide and glyoxal, an acetal derived from a dialdehyde and an aldehyde other than formaldehyde and an acidic catalyst. The catalyst and crosslinking agent is of sufficient amount and concentration to impregnate the fabric and produce wrinkle-resistance and smooth-drying finishes when dried from about 3-10 minutes at from about 60.degree.-100.degree. C. and then cured from about 1-5 minutes at from about 120.degree.-180.degree. C. The resultant fabric is then dyed.

Abstract: A process for improving the fastness properties of a sulphur dyestuff on a substrate comprising hydroxy group-containing fibres by applying to the dyed or printed substrate the reaction product (R) of(A) the product of reacting a mono- or polyfunctional primary or secondary amine with cyanamide, dicyanodiamide, guanidine or bi-guanidine; said product containing reactive hydrogen atoms bound to nitrogen, and(B) an N-methylol derivative of a urea, melamine, guanamine, triazinone, urone, carbamate or acid amidein the presence of (C) a catalyst for the crosslinking of N-methylol compounds of the type (B) above, and subsequently carrying out a heat-curing step.These compounds are useful for the aftertreatment of textile material.

Abstract: Cellulose acetate fibers are treated with hot aqueous or ethanolic solutions of o-phenylenediamine, triethylene tetramine or toluene diamine to improve the wrinkle resistance of fabrics, increase moisture regain, reduce static accumulation, and increase affinity for acid dyes.