DE178130C - - Google Patents

Description

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IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- Yes 178130-— CLASS 22 b. GROUP

Patented in the German Empire on October 24, 1905.

Condensations of oxyanthraquinones with aminoanthraquinones are not yet known become. It was not to be expected from the outset that a meeting of 5 oxyanthraquinones with aminoanthraquinones take place with elimination of water would, since the aminoanthraquinones are known to have a considerably lower basicity

CO

than the amines of the benzene and naphthalene series and therefore a far smaller one Have responsiveness.

We have now found that Orthodiaminoanthraquinones (1 · 2- or 2-3-diaminoanthraquinone) with alizarin resp. its derivatives condense to form Dyes of the Indsnthren range, e.g. B.

CO

CO

CO OH + H ₂ N) OH

2H ₂ O.

NH

CO

Example I.

20 kg of alizarin are mixed with 20 kg of ι · 2-diaminoanthraquinone, Boil 20 kg boric acid and 200 kg phenol for 16 to 20 hours heated. After cooling, you pour into hot water, filter off and wash with hot water. The product is cleaned with boiling organic solvents such as pyridine, nitrobenzene, etc. extracted. The product is most likely isomeric with the commercial indanthrene.

Example 2.

20 kg of purpurin with 200 kg of RoIikresol, 20 kg of 1 · 2-dieminoanthraquinone and

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20 kg of boric acid heated to boiling for 6 to 10 hours. One pours after cooling in hot water, filtered and washed off with hot water. Purpose of cleaning is the product dried and boiled with hot organic solvents. The oxyindanthrene thus obtained dissolves in concentrated Sulfuric acid olive green, with reducing agents it provides a blue vat and dyes unheated cotton greenish-blue Tones on. .

Example 3.

A mixture of 200 kg of phenol, 22 kg of alizarin blue, 20 kg of 2-3-diaminoanthraquinone is heated and 20 kg of boric acid to boil for 6 to 10 hours. After cooling down

It is poured into hot water, filtered and the residue is drawn off with hot organic solvents the end. The product thus obtained dissolves in concentrated sulfuric acid, is green very sparingly soluble in organic solvents and forms a brown color with reducing agents Vat from which cotton is dyed in green tones.

Example 4.

17 kg of purpurine-α-sulfonic acid (aniline salt) are with 10 kg 2 · 3-diaminoanthraquinone, ίο kg boric acid and 200 kg phenol sub vigorous stirring heated to the boil until the melt has a. assumed intense blue color Has. It is now allowed to cool to 80 ° and the melt is diluted with 200 liters of alcohol, whereupon the oxyindanthrene sulfonic acid formed, which is deposited in the form of a blue precipitate, easily by suction can be won. The product dyes wool blue.

Example 5.

10 kg 2 · 3-diaminoanthraquinone, 11 kg ß-Nitroalizarin, 10 kg of boric acid and 120 kg of phenol are heated in the closed vessel 24 hours on 200 to 220 ^0th After cooling, the whole thing is stirred up with hot water, boiled up and filtered. The impurities are removed by exhausting the residue with organic solvents.

Example 6.

Condensation product
the end: Solution in
conc.
sulfuric acid solution
in
Ghinolin Solution in
alkaline
Hydrosulfite coloring
on
cotton ι · 2-diaminoanthraquinone
and alizarin olive green blue blue blue ι · 2-diaminoanthraquinone
and purpurin olive green pure blue Light Blue blue ι · 2-diaminoanthraquinone and
Purpurine-ct-sulfonic acid light green hardly soluble
blue Brown blue green 2 · 3-diaminoanthraquinone
and alizarin olive green olive Brown Brown 2 · 3-diaminoanthraquinone
and ß-nitroalizarin green insoluble brownish yellow Brown 2 · 3-diaminoanthraquinone
and alizarin blue yellow. green orange tinted green 2 · 3-diaminoanthraquinone
and purpurin light green pure blue Brown blue 2 · 3-diaminoanthraquinone and
Purpurin-a-sulfonic acid light green blue Brown blue green .2 · 3-diaminoanthraquinone
and alizarin bordeaux dirty green light green Brown green.

6 kg of leucoalizarin bordeaux are crystallized with 5 kg of 2x3-diaminoanthraquinone, 5 g Boric acid and 80 kg phenol heated to 200 ° for 24 hours. The melt is poured after cooling in hot water, filtered and pulls the dried residue with it organic solvents. The insoluble part consists of the pure condensation product, whose properties are listed in the table.

The reaction with other derivatives of alizarin or others proceeds in a completely analogous manner o-diaminoanthraquinones.

The properties of some of the indanthrene derivatives shown in this way are shown in the table below compiled.

Claims (1)

Patent claim:
Method of making vats dyes of the anthracene series, condensed therein. standing that one can alizarin and its derivatives with orthodiaminoanthraquinones