BE353232A - - Google Patents

Description

       

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 if PERF. CTIOlif.NE1: lENrS TO THE COLORATION OF 1JJTI1! IREB "
This invention relates to the treatment of materials and especially materials such as: filaments, fibers, threads, fabrics, films, etc., made of or containing cellulose esters, for example cellulose acetate. , cellulose propionate or cellulose butyrate, with a view to obtaining solid colorations.



   It has been found that the colors obtained by dyeing, printing, sanding, etc., more especially on materials constituted by or containing cellulose esters produced with the aid of certain anti-

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 thraquinones, and more particularly using anthraquinone derivatives containing free amino, alkylamino or arylamino groups - whether or not these groups contain other substitution groups in the nucleus, such as for example mercapto groups, pxy, alkoxy, halogen or nitro - are not resistant to the combined influence of acids and light.

   As the treatments to which materials are subjected in industry frequently consist in subjecting these materials to the action of acids, this lack of solidity constitutes a serious obstacle to the use of anthraquinone derivatives, and in particular of derivatives specified for the production of colorations, since in practice colored materials are almost always required to be exposed to light,
According to the present invention, the color fastness obtained by dyeing, printing, sanding, etc.

   especially on materials consisting of or containing cellulose esters manufactured using anthraquinone derivatives, and more particularly anthraquinone derivatives containing the free amino, alkylamino or arylamino groups, is ensured by removing any harmful acid reaction on fiber, fabric or other material.



   This can be done by rinsing or washing the materials, preferably after dyeing or other coloring process, until said materials have become substantially or entirely acid-free, but it is more advantageous to do so. carried out by incorporating into the materials, at any phase of their manufacture or treatment, and preferably during dyeing

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 or other coloring process or during a finishing treatment or other additional treatment, one or more substances containing an inorganic base and having an alkaline reaction.

   Such substances are, for example, sodium carbonate, borax, disodium phosphate, sodium acetate, sodium palmitate and potassium oleate, but it is of course that these examples do not limit the invention in any way.



   In the treatment of materials consisting of or containing cellulose esters, it is preferable that the substances are not sufficiently basic or alkaline or that they are not applied in a sufficient degree of concentration to hydrolyze the ester to an adverse extent. cellulosic,
The examples which follow will make the invention understood, it being understood, however, that they do not limit it in any way.



   Example 1. - Cellulose acetate artificial silk threads are first dyed in any suitable manner with a sufficient amount of 1,4-diaminoanthraquinone to obtain the desired shade. After dyeing, the material is rinsed in water containing 2 grams of borax per liter and dried without further rinsing.



   Example 2 Artificial silk of cellulose acetate in any form is dyed with
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 1-mono.n.ethylarnino-4-oxyanthra, uin, one, it is then treated in a bath containing 3 grams of sodium carbonate per liter. Then it is dried without rinsing it.



   Although the application of the invention to the treatment of materials consisting of or containing cellulose esters, such as cellulose acetate, for example, it will be noted that this invention has been more particularly described.

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 tion is also applicable to the treatment of all other materials which may be dyed or otherwise colored by anthraquinone derivatives (especially those containing free amino, alkylamino or arylamino groups) such as wool, natural silk, cellulose ethers, etc. ... and the treatment of mixed materials.


    

Claims (1)

ABSTRACT ----------- 1 Process for making solid the colorations obtained using anthraquinone derivatives, and more particularly anthraquinone derivatives containing free amino, alkylamino or arylamino groups, this process consisting in suppressing any harmful acid reaction on the materials. This process can, moreover, be characterized by the following points, together or separately a) One or more substances containing an inorganic base and having an alkaline reaction, such as for example sodium carbonate, are incorporated into the fibers, fabrics or other materials. , borax, disodium phosphate, sodium acetate, sodium palmita- te or potassium oleate. b) These substances are incorporated during dyeing or other coloring process or during a finishing or other additional treatment. c) The treated materials consist of or contain cellulose acetate or another cellulose ester. d) One or more substances containing an inorganic base and having a <Desc / Clms Page number 5> alkaline reaction, although to an insufficient extent to determine harmful hydrolysis of the cellulosic ester, 2 As new industrial products, materials and especially materials containing cellulose esters, which have been colored with anthraquinone derivatives, and more particularly with derivatives containing free amino alkylamino or arylamino groups and to which are incorporated a or more substances containing an inorganic base and having an alkaline reaction. @