DE1012284B - Process for dyeing fibers based on polyvinyl derivatives - Google Patents

Description

The aim and object of the present invention is a method for dyeing fibers on the base of polyvinyl derivatives such as those formed by expanded polyvinyl chloride. In accordance with the present invention, it has been found that these fibers can be obtained more satisfactorily Can color way if at least one anthraquinone dye of the following formula:

O NH-CH,

O NH-CH ₂ -CH ₂ -O-CO-CH ₃

is applied to the fiber in the 2- or 6-position can be substituted by Br or Cl or in the 5, 8-position by - OH.

It is surprising that these organic esters of oxyethylaminoanthraquinones make excellent dyes for the fibers should be based on polyvinyl derivatives, since the Oxyäthylaminoanthraquinones themselves show no affinity for these fibers.

The dyes useful for practicing the present invention can be prepared, for example are made by the condensation of an anthraquinone derivative, which is an easily substituted one Contains atom or a group, with monoethanolamine and the subsequent esterification of the free alcoholic OH group using acetic acid.

These dyes can be applied to the polyvinyl fibers by the already known general methods as they are z. As described in French patents 1007 911 and 1009 215; they provide vivid color tones, have good fastness properties and can be used on their own arrive or in a mixture with other anthraquinone derivatives, which in themselves are only low Have an affinity for the polyvinyl fibers, but produce strong color tones on the latter, if they are used in a mixture with the above-mentioned dyes.

They give the polyvinyl fibers shades that are very waterproof and lightfast.

It is known from U.S. Patents 2,338,908, 2,381,971 and 2,411,148 for coloring cellulose acetate To use esters of Hydroxylalkylaminoanthraquinones. Although the one in the German Patent 618 006 and in the Swiss patent 259 411 described dyes for coloring of fibers based on polyvinyl derivatives

Process for dyeing fibers
based on polyvinyl derivatives

Applicant:

Compagnie Frangaise des Matieres
Colorantes, Paris

Representative: Dr. M. Eule, patent attorney,
Munich 13, Kurfürstenplatz 2

Claimed priority:
France 24 June 1953

Rachel Ratchewski, Paris,
has been named as the inventor

vaten are usable, it was not to be expected that the dye of the formula

O HN-CH ₃

O NH-CH ₂ -CH ₂ -O-CO-CH ₃

could be suitable for coloring fibers based on polyvinyl derivatives. Numerous dyes, which have a good affinity for cellulose acetate, have only a moderate affinity for it the fibers in question. This is particularly the case with hydroxyethylamino-4-methylamino-1-anthraquinone.

The following examples, in which the indicated parts are parts by weight, are intended to indicate the scope of the invention I'm not limiting in any way.

example 1

100 parts of fabric or threads made of polyvinyl chloride are placed in a bath containing 5 parts of methylamino-4-acetoxyethylamino-anthraquinone with 20% pure dye, 750 parts of water and 8 parts of a mixture of p-chlorotoluene and a condensate

709 588/268

10

contains sation product of ethylene oxide with lauryl alcohol and was previously dispersed. The temperature of the bath, which initially amounts to 20 to 25 °, increases to 40 to in the period of 20 minutes 42 ° increased This temperature is maintained for V2 hours. You rinse first with lukewarm water, then with cold water and dry underneath 40 °. The polyvinyl chloride is colored in vivid and firm pure blue shades.

Example 2

The same dye as in the previous example colors the polyvinyl chloride in the presence of 2 g per liter of a condensation product of ethylene oxide with lauryl alcohol. The goods are in a bath submerged at 50 °. The temperature is increased to 90 to 95 ° and the bath is kept there for IV2 hours Temperature. Rinse with water and dry.

The polyvinyl chloride is very pure and lightfast colored pure blue shades.

Example 3

A mixture is used under the same conditions as in the previous examples of dyes of the following formulas

NH-CH,

30th

35

40

CO,

NH-CH ₂ -CH ₂ -O-CO-CH ₃

NH-CH,

II

Example 5

With the l-methylamino-4-acetoxyethylammo-6-chloroanthraquinone from the formula

NH-CH,

NH-CH ₉ -CH ₉ -O-CO-CH.

one obtains blue-greenish shades under the same conditions as in the previous examples.

B e i s ρ i e 1 6; ■

The 1 - methylamino-4-acetoxyäthylamino - 5, 8 - dioxy-anthraquinone also produces blue-green shades on polyvinyl chloride under the same proportions as above. ■,,

Claims (3)

PATENT CLAIMS: 1. A method for dyeing fibers based on polyvinyl derivatives, characterized in that that at least one anthraquinone dye of the following formula NH-CH, NH-CH ₃ namely in a proportion of 80% of the dye of the formula I and 20% of the dye of the formula II, then you get very strong and pure blue shades on polyvinyl chloride. Example 4 The one from l-meth) damino-2-bromo-4-acetoxyethylamino-anthraquinone The dye formed dyes polyvinyl fibers in accordance with the processes given above bluish red hues. NH-CH ₉ -CH ₉ -O-CO-CH, that in the 2- or 6-position by Br or Cl or fn 5, 8-position can be substituted by —OH, is applied to the fiber. 2. The method according to claim 1, characterized in that fibers based on stretched Polyvinyl chloride can be used. 3. The method according to claim 1 or 2, characterized in that the anthraquinone color code used in a mixture with other Änthraquinone derivatives. Considered publications:
German Patent No. 618 006;
U.S. Patent Nos. 2,338,908, 2,381,971, 411148; Swiss patent specification No. 259 411. © 709 588/268 7.57