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Method for modifying pigment red 170 through synergism of micro-silicon powder and Triton X-100

A synergistic modification, pigment red technology, applied in the direction of organic dyes, etc., can solve problems such as difficulty in meeting application requirements

Active Publication Date: 2015-05-20
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technology improves the heat resistance of Pigment Red 170 by 4-5°C to a certain extent, it is still difficult to meet its application requirements in the field of plastics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] (1) Preparation of diazonium salt solution and addition of silica fume and Triton X-100

[0021] Add 50 parts of water and 8.8 parts of hydrochloric acid solution with a concentration of 36% to 38% into the reaction bottle, mix and stir to obtain an acid solution, weigh 4 parts of p-aminobenzamide, and add it to the acid solution under stirring conditions ; Weigh 2.32 parts of NaNO 2 Dissolved in 12 parts of water to form NaNO 2 solution; add crushed ice to the reaction solution to cool down, and then add NaNO dropwise to it 2 solution, after the dropwise addition, NaNO 2 Slight excess; continue to stir and react for 10 minutes, weigh 0.35-0.58 parts of Triton X-100, 24 parts of CH with pH=3.96 3 COOH-CH 3 COONa buffer solution, 0.7-2.0 parts of microsilica powder, form a diazonium salt mixture under mechanical stirring conditions;

[0022] (2) Preparation of coupling components

[0023] Weigh 150 parts of water and 2.5-2.8 parts of NaOH to prepare lye, heat the l...

Embodiment 1

[0031] Take the modified pigment red 170 with 5% addition of microsilica as an example:

[0032] Take 50g of tap water, 8.8g of hydrochloric acid with a concentration of 36%-38%, add 4g of p-aminobenzamide under stirring conditions, weigh the NaNO 2 Dissolve 2.32g in 12mL water to form NaNO 2 Solution, drop by drop for diazotization, add crushed ice to the reaction system to cool down, and then add NaNO drop by drop 2 Solution, after the dropwise addition, use starch-potassium iodide test paper to detect NaNO2 For a slight excess. After the solution was stirred for 10 min, 24 mL of CH with pH=3.96 was added to the diazo solution. 3 COOH-CH 3 COONa buffer solution, 0.35g non-ionic surfactant Triton X-100, and 0.7g microsilica, continue to stir and wait for reaction.

[0033] Add 150mL water and 2.5g NaOH to the beaker to prepare lye, 1.05g Turkish red oil, 0.13g pull open powder, heat the lye to 70°C, weigh 9.4g naphthol AS-PH, add and continue to stir and heat Raise the t...

Embodiment 2

[0035] Take the modified pigment red 170 with 10% addition of microsilica as an example:

[0036] Take 50g of tap water, 8.8g of hydrochloric acid with a concentration of 36%-38%, add 4g of p-aminobenzamide under stirring conditions, weigh the NaNO 2 Dissolve 2.32g in 12mL water to form NaNO 2 Solution, drop by drop for diazotization, add crushed ice to the reaction system to cool down, and then add NaNO drop by drop 2 Solution, after the dropwise addition, use starch-potassium iodide test paper to detect NaNO 2 For a slight excess. After the solution was stirred for 10 min, 24 mL of CH with pH=3.96 was added to the diazo solution. 3 COOH-CH 3 COONa buffer solution, 0.45g non-ionic surfactant Triton X-100, and 1.32g microsilica, continue to stir and wait for reaction.

[0037] Add 150mL water and 2.6g NaOH to the beaker to prepare lye, 1.05g Turkish red oil, 0.13g pull open powder, heat the lye to 70°C, weigh 9.5g naphthol AS-PH, add and continue to stir and heat Raise t...

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Abstract

The invention provides a method for modifying pigment red 170 through synergism of micro-silicon powder and Triton X-100. The method comprises the following steps: adding micro-silicon powder and a nonionic surfactant Triton X-100 into a solution with a high content of diazo salt, and simultaneously adding a coupling component and integrating the micro-silicon powder with pigment particles of the pigment red 170 by virtue of bridging action of Triton X-100 so as to modify and prepare the pigment red 170 of an inorganic-organic composite structure. The method has the beneficial effects that the spherical micro-silicon powder with uniform particle size distribution is used for controlling shape, particle size and distribution of the prepared and modified pigment red 170, so that the tinting strength of the pigment red 170 is increased by 5-10%; by virtue of the bridging action of the nonionic surfactant Triton X-100, the integration of the pigment red 170 and the micro-silicon powder is highly firm; and the heat resistance of the pigment red 170 is improved; compared with a standard substance, the heat resistance of the modified pigment red 170 is improved by 10-20 DEG C.

Description

technical field [0001] The invention belongs to the modification preparation of organic pigments in chemical products, and in particular relates to a method for synergistically modifying pigment red 170 with microsilica powder and Triton X-100. Background technique [0002] In organic pigment modification technology, inorganic-organic pigment composite technology is one of the important technologies to solve the problem of low light fastness, poor weather resistance and high cost of organic pigments. This technology combines cheap, stable white inorganic pigments and white mineral particles (such as lithopone, SiO, etc.) through physical adsorption, electrostatic adsorption, and chemical bonding. 2 、TiO 2 , kaolin, sepiolite, diatomaceous earth, etc.) combined with organic pigments to form a new inorganic-organic composite pigment. This kind of composite pigment has roughly two structures. One is to coat the inorganic matter on the surface of the organic pigment and form a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/20
Inventor 费学宁曹凌云张珍珍张宝莲谷迎春
Owner TIANJIN CHENGJIAN UNIV
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