DE504017C - Process for the production of colored complex compounds, in particular pigment dyes - Google Patents

Description

Process for the production of colored complex compounds, in particular of pigment dyes Addition to patent 498 = 54 In the main patent 498 154 is described a process in which primary, secondary or tertiary amino groups containing, uncolored or colored aromatic compounds that are not basic Dyes are made with complex acids or their salts or with to form more complex Acids capable substances are treated simultaneously or one after the other. These colored compounds are characterized by vividness of color and multiple characterized by excellent lightfastness.

In contrast, it has now been found that with regard to the color strength can achieve better products with otherwise the same properties if one in the preparation of the aforementioned compounds from mixtures of the aromatic Amino compounds with basic or such dyes. those next to basic groups still contain acidic groups.

You can also use the colored compounds in the presence of one in the The usual substrate for the color lacquer industry can also be produced with the addition of dispersing agents acting agents such as salts of alkylated naphthalenesulfonic acids, cholic acid Sodium, Turkish red oils, etc., as well as when the temperature is higher than usual or work under increased pressure.

Example i 6.75 parts by weight of 4,4'-tetramethyldiaminobenzhydrol with 11 parts by volume of concentrated hydrochloric acid of 20 ° B6 in 100 parts by volume of water solved. The solution of 12 parts by weight of Victoria blue is added to this solution R (see G. S c h u 1 t z, color tables, 6th edition, volume I, p. 186, no. 558), r: roo dissolved, and then leaves 42.5 parts by weight of phosphorus tungsten molybdenum acid Sodium, dissolved 1: 2o, pour in with stirring. On this one leaves the approach approximately Stand for% hour and then blunt the acid with 7 parts by weight of calcined soda, 1: 1o solved, off. The colored pigment formed is passed through in the usual manner Repeated filling up with water, draining and peeling off, washed and finished. It is a deep blue colored pigment that is preferred in the paint industry Can be used.

One can look at the stained Pigments also proceed in such a way that the amine is first allowed to act on the complex salt, thereupon the basic dye adds and the excretion of the soda solution Pigments accomplished.

Example e Dissolve, as indicated in Example i, 6.75 parts by weight 4,4'-Tetramethyldiaminobenzhydrol in iooo parts by volume of water, adds 4 parts by weight Light green SF yellowish (Schultz, color tables, 6th edition, no. 505), i: ioo dissolved in water, and then leaves the solution of 2.5 parts by weight of phosphotungframsaurem Sodium, dissolved i: 2o, flow in. After stirring for about an hour, you will blunt the approach with 7 parts by weight of calcined soda, i: io dissolved, and completed the precipitation by adding 4 parts by weight of crystallized chlorobarium, i: io solved.

The greenish-blue colored pigment is worked up as described in Example i. Example 3 12 parts of p-aminobenzaldehyde are dissolved in 2,000 parts of hot water with the addition of 2o parts of concentrated hydrochloric acid and, after filtering, with a solution of 0.5 part of Viktoriablau R (S chu 1 tz, Dyestuff Tables, 6th edition, No. 55s) added in 300 parts of water. A solution of 18o parts of sodium phosphotungframinolybdenic acid in 100 parts of water is stirred into this mixture, a brownish-red precipitate separating out. After stirring for half an hour, the acid is neutralized with solo solution i: io. The pigment obtained here takes on an olive green hue and is worked up as described in Example i.

Claims (1)

PATENT CLAIM: Further development of the process of main patent 498 154 for the production of colored complex compounds. especially of pigment dyes, characterized in that mixtures are used in the preparation of the colored compounds of the aromatic amino compounds that are not basic dyes with basic ones or those dyes that contain acidic groups in addition to basic groups, used as starting material.