Abstract: Modified rayon is produced by adding a modifier to a cellulose solution and spinning fibers from the solution, or by adding a modifier to an alkali cellulose solution or material, xanthating and spinning fibers by the viscose spinning process, wherein the modifier is an amine of the formula (1a), (1b), (1c), (1d) or (1e) ##STR1## The modified rayon produced in this way can be dyed with reactive dyes without addition of electrolyte salt or alkali and have significantly more affinity than conventional viscose fibers.

Abstract: Preparation of N-(2-sulfatoethyl)piperazine sulfate by reacting N-(2-hydroxyethyl)piperazine in a mixture of high- or relatively high-percentage sulfuric acid and oleum or chlorosulfonic acid at temperatures of about 80.degree. C. to about 250.degree. C., introducing the sulfation mixture formed into a water-miscible aliphatic alcohol and isolating the N-(2-sulfatoethyl)piperazine sulfate formed.

Abstract: Process for dyeing regenerated cellulose fibers, which comprises adding an amine-substituted cellulose derivative to a viscose dope or to an alkali cellulose and spinning fibers by the viscose spinning process, or adding said cellulose derivative to a cellulose solution and spinning fibers from the solution, processing fibers into a woven or knitted fabric and dyeing the fabric with a direct or acid dye in the absence of additional electrolyte salt.

Abstract: A process for the production of aminated cotton fibers by subjecting a raw cotton or cotton-polyester mixture to a modification with a saturated aliphatic compound of 3 to 15 carbon atoms which contains at least one primary, secondary, tertiary, or quaternary amino group and at least one hydrolyzable ester group, in which the saturated radical is straight chain, branched, or cyclic, and may be interrupted by one or more hetero groups and may be substituted by one or more hydroxyl groups. The modification occurs simultaneously with scouring, kiering, or dry mercerizing.

Abstract: Modified cellulose fiber is produced by adding a modifier to a cellulose solution and spinning fibers from the solution, or by adding a modifier to a viscose solution and spinning fibers by the viscose spinning process, said modifier being a polymeric amine compound having pendant primary, secondary or tertiary amino groups and having a molecular mass of more than 1000.

Abstract: Fiber materials are modified with a polyalkyleneimine polymer at crosslinking agent, preferably glyoxal, and optionally dyed with water-soluble, anionic dyes, preferably reactive dyes. The dyeing process with fiber materials modified according to the invention can be carried out low-salt or completely without salt and also alkali-free or using only minimal amounts of alkali.

Abstract: A process for printing and dyeing sheetlike fiber materials with anionic dyes comprisesa) first applying to the sheetlike fiber material an aqueous solution containing a fixing alkali and a compound which contains a primary, secondary or tertiary amino group or a quaternary ammonium group, which may each also be part of a heterocycle, by using a printing process, thenb) subjecting the sheetlike fiber material to a fixing treatment to modify the sheetlike fiber material, and finally and optionallyc) dyeing the modified sheetlike fiber material one or more times by a customary exhaust or padding method.

Abstract: A process for the dyeing of fiber materials with water-soluble anionic dyes, in particular those having a fiber-reactive group, is described, according to which dyeing is carried out using low-electrolyte or entirely electrolyte-free and/or low-alkali or entirely alkali-free dye solutions (dye liquors, printing pastes) and in which a fiber material is used which was modified by means of a saturated straight-chain or branched aliphatic or cycloaliphatic compound which is unsubstituted or substituted by one or more hydroxy groups and contains at least one primary, secondary or tertiary amino group or quaternary ammonium group and at least one hydrolyzable ester group, it also being possible for the aliphatic radical in this compound to be interrupted by one or more hetero groups.

Abstract: Process and use of reactive disperse dyes for dyeing and printing aminated, textile cotton and cotton-polyester blend fabricsHydroxyl-containing materials, in particular fiber materials, such as cellulose fiber materials, which have been modified with an amino-containing compound are dyed as such or in blend with polyester fibers with the aid of a fiber-reactive disperse dye in an aqueous, low-electrolyte or completely electrolyte-free medium and in the absence of an alkaline or alkali-donating agent at a temperature of between 100.degree. and 210.degree. C. Not only the modified cellulose-containing material but also the polyester material can be dyed in one and the same dyeing process with one and the same fiber reactive disperse dye. A uniform overall dyeing not only for modified hydroxyl-containing material but also for polyester material is obtained.

Abstract: Aqueous ink formulation and a process for printing sheetlike cellulose fiber materials or materials containing cellulose fibers with reactive dyes using a single-phase inkjet process or some other non-contact minimal addon spray technique and subsequent fixation of the reactive dyes on the fiber, which comprises using an aqueous ink formulation comprising an alkali metal fluoride, an alkali metal formate, an alkali metal citrate, an alkali metal salt of a C.sub.2 -C.sub.4 -dicarboxylic acid or a mixture thereof.

Abstract: A process for dyeing textile fiber materials with water-soluble dyestuffs, in particular anionic dyestuffs, and of these in particular those having a fiber-reactive group, in which the dyeing is carried out using low-electrolyte or entirely electrolyte-free and/or low-alkali or entirely alkali-free dye liquors or printing pastes and a fiber material which has been modified with a silane compound containing amino groups is used as the textile material. The fiber material is modified by applying the silane compound containing amino groups to the material in aqueous solution and subjecting the impregnated material to a heat treatment. Novel silane compounds which contain a secondary amino group and can likewise be employed for the purpose mentioned are furthermore described.

Abstract: There is described a process for dyeing sheetlike fiber materials, in particular those made of or containing cellulose fibers, with anionic dyes, in particular those having fiber-reactive groups, which comprises applying an alkali-free and preferably low-electrolyte or completely electrolyte-free aqueous solution of the anionic dye by the inkjet printing spray technique to a fiber material which has been pretreated and modified with a compound that contains one or more primary, secondary or tertiary amino groups or quaternary ammonium groups, which amino/ammonium groups may be part of a heterocycle. There is generally no need for an aftertreatment by washing. The costly treatment of wastewaters resulting from the excess dyeing liquors otherwise obtained is eliminated. If fiber-reactive dyes are used, fixation by means of alkali is not necessary; it is generally effected by a short heat treatment.