CH390218A - Process for dyeing and printing polyacrylonitrile or polyvinylidene-containing textile fibers with basic dyes - Google Patents

Description

  

  Process for dyeing and printing polyacrylonitrile or polyvinylidene-containing textile fibers with basic dyes the formula
EMI0001.0010
    used, where R1 is an alkyl,

          Cycloalkyl or aralkyl radical and Ar stands for an aromatic radical and R2 and R3 represent an alkyl, cycloalkyl, aryl or aralkyl radical, where, when Ar is a p-phenylene radical, R2 is not an alkyl or cycloalkyl radical and R3 is not Can be alkyl or aryl radical,

   in which the alkyl radicals R2 and R3 can also jointly be part of a saturated heterocyclic ring system and the aromatic rings and the alkyl and cycloalkyl radicals by halogen, alkoxy, acyl, dialkylamino and / or alkylarylamino groups,

      the aromatic rings can also be substituted by alkyl and / or aryl groups and rings A and B and the radical R1 can also be substituted by acylamino groups, and where X is an anionic radical. X can, for example, represent the remainder of hydrochloric acid, sulfuric acid, phosphoric acid or acetic acid.



  The dyeable textile fibers consist entirely or predominantly, generally over 85%, of polymerized acrylonitrile or vinylidene cyanide. It is noteworthy that when mixtures of these materials are dyed with wool, the animal fiber is hardly dyed.

   A particular advantage of the process lies in the great abundance of the dyes used, which enables very deep dyeings and prints to be produced. The dyeings and prints have excellent fastness properties, in particular light, decatur and wash fastness; they are characterized by uniform coloration and high brilliance.

      <I> Example </I> In an aqueous dye bath which contains 0.75 g of 30% acetic acid, 0.40 g of sodium acetate and 0.20 g of the dye of the formula
EMI0001.0060
    contains, one brings the liquor ratio 1:40 corresponding amount of polyacrylic nitrile fibers at about 45 ', heated within 20 to 30 minutes to boiling and keeps the dyebath 30 to 60 minutes at boiling temperature. After the fibers have been rinsed and dried, a reddish-tinged blue dyeing with excellent fastness properties is obtained.



  In an analogous manner, the dyeings of excellent fastness properties shown in the table are obtained on polyacrylonitrile with the following dyes:
EMI0002.0001
  
    2 \
<tb> / CH2CH
<tb> C2H5-N @ C- <B> // <SEP> \ </B> -N <SEP> O
<tb> \ CH2 <SEP> CH2 @ <SEP> violet
<tb> \ <SEP> / <SEP> C1
<tb> CH2-CH2
<tb> C2H5- <SEP> N = C - # - N <SEP> \ C <SEP> H2 <SEP> C <SEP> H2 <SEP> / NH <SEP> blue-violet
<tb> C1
<tb> CH2C6H5
<tb> C2H5-N-C <SEP> @ <B> _ </B> N
<tb> I <SEP> \ CH2CsH5 <SEP> has a bluish cast
<tb> purple
<tb> Cl C2Hg <SEP> N <SEP> C
<tb> N (CHs)

  2
<tb> blue
<tb> C1- If, in this example, instead of a dye with the N-ethyl perinaphtholactam group, the corresponding amount of a dye with the N-benzyl or N-cyclohexyl perinaphtholactam group is used, valuable dyes with similar coloring properties are also obtained and a slightly greener shade.

 

Claims (1)

PATENT CLAIMS I. A process for dyeing and printing textile fibers which are wholly or predominantly made of polymerized acrylonitrile or vinylidenecyanide, characterized in that basic dyes of the formula EMI0002.0011 used, where R1 is an alkyl, cycloalkyl or aralkyl radical and Ar is an aromatic radical and R2 and R3 are an alkyl, cycloalkyl, Aryl or aralkyl radical, where, if Ar is a p-phenylene radical and R1 is an alkyl radical, R2 is an aralkyl radical, in which the alkyl radicals R2 and R3 can also jointly be part of a saturated heterocyclic ring system, and the aromatic rings as well the alkyl and cycloalkyl radicals by halogen, alkoxy, Acyl, dialkylamino and / or alkylarylamino groups, the aromatic rings also can be substituted by alkyl and / or aryl groups and rings A and B and the radical R1 can also be substituted by acylamino groups, and where X is an anionic radical. 1I. Textile materials, especially those made of polyacrylonitrile, dyed or printed according to the method according to claim I. <B> Cited writings and images </B> <I> none </I>