Method for producing reactive cyclodextrins textile material provided with same, and use of said cyclodextrin derivatives

Abstract

The invention relates to a process for the preparation of reactive cyclodextrins, in which process the cyclodextrins CD are reacted with a bifunctional alkyl compound X—(CH 2 ) n —Y, wherein X is a group which reacts with CD, n is an integer from 2 to 20 and Y is a group which reacts with a group Z or is a group-Reactive which is capable of reaction with cellulosic or proteinic materials and, optionally, in a further step, insofar as Y is a group which reacts with a group Z, the resulting product is reacted with a reactive anchor compound Z-Reactive to form the reactive cyclodextrin, and also to reactive cyclodextrins prepared in accordance therewith, to materials dressed therewith and to the use thereof.

1 . A reactive cyclodextrin having a reactive anchor function which is bonded to a spacer group and is capable of reaction with cellulosic and/or proteinic materials, the spacer group being an aliphatic, cycloaliphatic or aromatic hydrocarbon radical containing from 1 to 25 carbon atoms and the reactive anchor function is selected from the group consisting of 2,3-dibrompropionyl, 2-bromoacryloxyl, 2-chloroacryloyl, methacryloyl, acryloxyl group, a vinyl sulfone group, a halotriazinyl or haloquinoxazolinoyl group, a phenyl sulfonyl ethyl hydrogen sulphate radical and phenyl sulfonyl ethyl sulfonic acid radical. 
     
     
         2 . A reactive cyclodextrin according to  claim 1 , wherein the cyclodextrin is an α-, β- or γ-cyclodextrin or derivative. 
     
     
         3 . A reactive cyclodextrin according to  claim 1 , wherein the spacer is —(CH 2 ) n — and n is from 1 to 8. 
     
     
         4 . A reactive cyclodextrin according to  claim 3 , wherein n is from 3 to 6. 
     
     
         5 . A reactive cyclodextrin according to  claim 3 , wherein the cyclodextrin and the reactive anchor function are arranged in terminal positions on the —(CH 2 ) n — group. 
     
     
         7 . Material dressed with a reactive cyclodextrin according to  claim 1 , which material comprises the cyclodextrin bonded to a free OH, NH 2  or NH function by way of a reactive anchor function and a spacer group —(CH 2 ) n —. 
     
     
         8 . Natural or synthetic textile material according to  claim 7 . 
     
     
         9 . Material according to  claim 7 , which is cellulosic or proteinic in nature. 
     
     
         10 . Material according to  claim 1 , in the form of fibres, filaments, yarns, heaped material or sheet material.