DE727917C - Process for improving the fastness properties of dyeings with substantive dyes on cellulose fibers - Google Patents

Description

Process for improving the fastness properties of dyeings with substantive dyes on cellulose fibers It has been found that the Fastness properties of dyeings with substantive dyes on cellulose fibers can improve if the dyed fiber with solutions of salts of quaternary ammonium bases post-treated, which is produced by vigorous peralkylation of base mixtures are, which are essentially polyalkylenepolyamines of the general formula H2N- (AlkylenNH) > 2alkyleneNH2 included.

In comparison with the methods known so far from the document in Dun for the aftertreatment of dyeings on cellulose fibers with solutions of quaternary Ammonium compounds (see British patents 3669I8, 383 634 and 39o 553 as well as the French patent 748 5I6) shows the present process, especially in terms of fastness to washing, far superior.

Of the possible polyamines, polyethylene diamine is technically the most Easiest Accessible. This is known to be a mixture of polymeric ethylene diamines. of the general formula NH2 (C2H4NH) nC2H4NH2 ,. which connections from the general Formula (C2H4NH) n (piperazine and similar compounds) are added. While Ethylenediamine itself and the next higher polymers, for example diethylenetriamine, Triethylenetriamine, triethylenetetramine require a condensation reaction in order to their conversion to ammonium bases useful aftertreatment agents for nouns Mixtures of polymeric bases, which are mainly compounds, can be used to produce colorations in which n <2 in the sense of the above formulas, already by energetic Peralkylation alone can be converted into valuable aftertreatment agents. Here As complete an alkylation as possible is advantageous, in which as many as possible of the nitrogen atoms present are converted into the pentavalent state. Example A quaternary ammonium base suitable for subsequent treatment of substantive stains can e.g. B. be prepared in the following way: 'From a mixture of polymeric Ethy @ endamne is distilled in a vacuum: from 10 mm to 22o ° C Shares from, I 50 parts of the residue, which is a viscous brown liquid represents ,, one dissolves in 2,000 parts of water and sets at 25 to 30 ° C I2oo parts Dimethyl sulphate gradually increases and ensures this by the simultaneous addition of sodium carbonate for permanent alkaline reaction. After the reaction has ended, the precipitated product is sucked off Sodium sulfate and receives a brown solution, which, if diluted accordingly, immediately can be used for post-treatment of substantive colorations. The way of working is included the same as in patent 633 69I.

The polyamine used as the starting body can be very diverse Have composition. The alkylation can also be carried out in a wide variety of ways, for example also with arylsulfonic acid alkyl esters of various alcohols or benzyl chloride, be made. The various alkylating agents can also be used one after the other Can also be used in a known manner with alcohol and hydrochloric acid produce the tertiary base and from this the quaternary ammonium base.

Claims (1)

PATENT CLAIM: Process for improving the authenticity properties of dyeings with substantive dyes on cellulose fibers, characterized in that that the dyed fiber is aftertreated with solutions of salts of quaternary ammonium bases, which are produced by vigorous peralkylation of base mixtures, which essentially polyalkylenepolyamines of the general formula H2 N- (alkylene N H) ? 2; contain alkylene N H2.