SU732336A1 - Method of preparing commercial thermo-resistant organic pigments - Google Patents

Description

organic solvent - alcohols ct carboxylic acids with carbon numbers 1–2 and boiling points, 60–120 ° C and the deposition of surfactant are carried out during spray drying or cyuiKH pigment suspension in boiling:

a layer of inert bodies

In case of using an extensive dryer with a disc-sprayer (disc speed is 35–40 thousand rpm), the stage is conducted by heated air (flow rate 50 at the inlet temperature, ISO-SSO C dryer, and 75- 95 C. Proizvoditelg; Ns st of the dryer on suspension of 2 l / h,

In the case of using a fluidized bed drier of inert bodies — glass beads .uHELMeTpoM 4-5 mm or fluoroplastic chips with an effective diameter of 2-4 y / s, the flow rate of heated air is 50-100, pressure 4f5 atm, irorZEog (Slurry 1 -.one.

In view of the instantaneous suawi suspension, spray pigments are encapsulated in surfactant casings in spray dryers or in fluid bed dryers of inert bodies without prior separation on the surface of the pigments.

The invention is illustrated by examples.

Example, A 1000 ml beaker is charged with 1000 g of a 20% aqueous paste of tech-chlorothio indigo pigment and 1000 g of distilled water is added to obtain a 10% suspension. Stir with a high speed stirrer type Dissolver, 1500 rpm for 2 h, after which the suspension is heated to 60 C. Separately dissolve 3.0 g of the coconut oil fatty acid amines in 60.0 ml of formic acid at. The resulting solution is added with vigorous stirring to a heated suspension and stirred. 20-ZOmin. The suspension is dried in a spray dryer. 188 g of a homogeneous pigment powder are obtained, which colors the polymeric materials in an intense red-violet color. Yield 94%

Example 2. In a 3000 ml beaker, 1100 g of N, N-dimethyldiimide perylene-3,4,9,10-tetracarboxylic acid pigment base paste with a 18% dry product content are added to a 3000 ml beaker, and 900 g of distilled water are added and 1.5 are mixed. h high-speed stirrer type Dissolver (1500 rpm), then the suspension is heated to 60 ° C and poured a solution of 2.0 g of amines of fatty acids Sc-f-Cg in 40.0 ml of ethyl alcohol, heated to. The suspension is stirred for 40 minutes, then dried;

dusty syishlke. 190g of pigment powder is obtained, which kKpAitmBa plastics is in pure dark brown color.

Example 3: 1620 g of a water paste of a pigment base of cis-naphthoylen-bis-benzimidazolnaphthalene-1, 4,5,8-tetracarboxylic acid with a dry product content of 18.5% is loaded into a turbo mill with a capacity of 5000 ml, 1380 g are added distilled water and intensively repaint (1200-1500 rpm) for 2 h, at the same time heat the suspension to bOS. Separately, a 5% solution of rosin glycerol ester (6 g in 120 ml) in acetic acid at 70-80 0 is prepared. This solution is added to the heated suspension and the mixture is stirred for about an hour at 70-80 ° C, then the suspension is dried in a bale Inert bodies are obtained. 286 g of a pigment powder is obtained, which is well distributed in paints and varnishes. The yield is 95.3%.

Example 4, 2270 g of a 22% linear trans-quinacridone linear pigment base water paste is loaded into a 1000 ml capacity tank, 2730 g of distilled water is added and stirred with a quick-stirrer type Dissolver for 1.5 hours. Then the homogenized suspension is heated to 60 ° , 15 g of the fleet are simultaneously dissolved .; New (stearine lamine) in 300 ml of ethanol, after which the amine solution is added to the heated suspension, stirred for 30 minutes and sent to a spray dryer. 478 g of a uniform pigment powder are obtained, which paint the organic binders in a pink color. Yield 95.6%.

Example5. 1050 g of aqueous paste (with a dry product content of 19%) of linear trans-quinacridon pigment in beta form are loaded into a 3000 ml beaker, 950 ml of distilled water is added, stirred for 2 hours with a Dissolver type high speed agitator, heated to, then added a solution of 10 g of hexamethylenediamine in 200 ml of methyl alcohol obtained at. Stirring is continued for 20-30 minutes, after which the suspension is fed to a spray dryer. 192 g of pigment powder are obtained, which colors artificial skin and plastics in pure violet color.

EXAMPLE 6 1480 g of a pigment base — trans-naphthoylen-bis-benimidazolnaphthalene-1, 4,5,8-tetracarboxylic acid in the form of an aqueous paste with a dry product content of 20.3% is loaded into a turbine mill with a capacity of 50.00 ml, add 1520 g of distilled water and stir inintextrally (1200-1500 rpm) for 1.5 hours. Suspension until.

Warm up Separately, a 5% solution of 1.5 g of flotamines in 300 ml of ethyl alcohol is prepared, which is 0.5%, calculated on the dry pigment. The resulting solution is heated to 60 ° C and poured into a heated suspension, stirred for another hour and then dried in a spray dryer.

proposed

1. Stages of the process

a) homogenizing on a high speed mixer;

b) the supply of pre-prepared surfactant solution;

c) drying in sprayed sugilke or in a fluidized bed of inert bodies. 2. Overall 3.5 - 5.0, including a) 1.5-2.0 b) 0.5-1.0 c) 1.5-2.0

3. Output,%

94 - 96

284 g of a homogeneous powder are obtained, which colors the polymeric materials in an intense orange color. Yield 94.6%.

A comparative description of the proposed and known methods for the production of outlet forms is given in the table.

Way

famous

a) suspension in the aquatic environment;

b) the supply of amines dissolved in glacial acetic acid;

c) precipitating the amine by adding a base;

d) stirring, filtering washing to neutral medium;

e) drying at 60 ° C. 88 - 90 process time, h 27.0 - 37.0 stages: a) 8.0 - 10.0 b) 0.5 - 1.0 c) 2.0 - 5, 0 g) 2.0 - 3.0 d) 15.0-18.0

Claims (2)

1. The patent of England 1162036, cl. C 3 K, published. 1971. 2.Patent of England 1156835, cl. C 3 P, published, 1971 (prototype).