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Preparation method for C.I.112 pigment red FGR

A technology of pigment red and naphthol, which is applied in the field of preparation of C.I.112 pigment red FGR, can solve the problems of environmental pollution, poor application performance of pigment hydrophilicity, and low reaction conversion rate, so as to enhance hydrophilicity and inhibit re-aggregation , The effect of improving the utilization rate

Inactive Publication Date: 2009-10-28
杭州荣彩实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a preparation method of C.I.112 Pigment Red FGR, which mainly solves the pollution caused by the use of pigments in the prior art, the hydrophilic application performance of the pigment itself is relatively poor, and Technical problems such as low reaction conversion rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: A preparation method of C.I.112 Pigment Red FGR of this example, the steps are:

[0025] a. Preparation of diazonium liquid: Add 8 parts by weight of fatty alcohol polyoxyethylene ether to 1000 parts by weight of water to make a mixed liquid, and then make 100 parts by weight of 2.4.5-trichloroaniline into 245 mesh through colloid milling After the fineness is added to the mixed solution, then 180 parts by weight of 31% hydrochloric acid and 15 parts by weight of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate are added to the mixed solution, and beating for 1.5 hours , Diazotizing with 115 parts by weight of 30% sodium nitrite solution to prepare diazonium liquid;

[0026] b. Preparation of Naphthol AS-D alkaline solution: Add 135 parts by weight of 30% NaOH to 1000 parts by weight of water, raise the temperature to 90°C, add 10 parts by weight of rosin resin for 0.08 hours, and add 145 parts by weight Keep part of Naphthol AS-D for 0.08 hours, and c...

Embodiment 2

[0029] Example 2: A preparation method of C.I.112 Pigment Red FGR of this example, the steps are:

[0030] a. Preparation of diazonium liquid: add 6 parts by weight of fatty alcohol polyoxyethylene ether to 1000 parts by weight of water to make a mixed liquid, and then make 99 parts by weight of 2.4.5-trichloroaniline into 240 mesh through colloid milling After the fineness is added to the mixed solution, then 175 parts by weight of 30% hydrochloric acid and 13 parts by weight of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate are added to the mixed solution, and beating for 1.5 hours , Diazotizing with 113 parts by weight of 29% sodium nitrite solution to prepare diazonium liquid;

[0031] b. Preparation of Naphthol AS-D alkaline solution: Add 130 parts by weight of 29% NaOH to 1000 parts by weight of water, heat up to 88°C, add 8 parts by weight of rosin resin for 0.08 hours, add 143 parts by weight Keep a portion of Naphthol AS-D for 0.08 hours, and lower the temper...

Embodiment 3

[0034] Example 3: A preparation method of C.I.112 Pigment Red FGR of this example, the steps are:

[0035] a. Preparation of diazonium liquid: 7 parts by weight of fatty alcohol polyoxyethylene ether are added to 1000 parts by weight of water to make a mixed liquid, 101 parts by weight of 2.4.5-trichloroaniline are pulped into 248 mesh through colloid mill After the fineness is added to the mixed liquid, then 178 parts by weight of 30.5% hydrochloric acid and 14 parts by weight of octadecyldimethylhydroxyethyl quaternary ammonium nitrate are added to the mixed liquid, and the slurry is beaten for 1 hour , Diazotizing with 113 parts by weight of a 30.5% sodium nitrite solution to prepare a diazonium solution;

[0036] b. Preparation of Naphthol AS-D alkaline solution: Add 138 parts by weight of 30.5% NaOH to 1000 parts by weight of water, heat up to 92°C, add 11 parts by weight of rosin resin for 0.1 hour, and add 146 parts by weight Keep a portion of Naphthol AS-D for 0.1 hour, an...

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PUM

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Abstract

The invention relates to a preparation method for pigment red, especially for C.I.112 pigment red FGR, comprising: adding a non ionic surface active agent in water to produce a mixing liquid, adding 2.4.5-trichloroaniline in the mixing liquid, then adding hydrochloric acid, cation surface active agent, sodium nitrate to produce diazo liquid; adding aqueous alkali in water, heating, feeding rosin resin to completely dissolve, adding naphthol AS-D for standby, cooling to obtain the naphthol AS-D alkaline solution; adding non-ionic surface active agent in sulfuric acid, then adding naphthol AS-Dalkaline solution, fully stirring, obtaining AS-D coupling liquid; filtering the diazo liquid and adding into the naphthol AS-D coupling liquid for coupling reaction, fully stirring after reaction, filtering, cleaning, drying, grinding, and obtaining the finished product. The method solves the problems of environment pollution of the pigment, poor hydrophilic application of the pigment and low reaction conversion.

Description

Technical field [0001] The invention relates to a method for preparing pigment red, in particular to a method for preparing C.I.112 pigment red FGR. Background technique [0002] Organic pigments are organic compounds and they do not have hydrophilic properties. Therefore, they must be hydrophilically modified to be hydrophilic. However, different organic compounds have different polarities due to their different molecular structures and different functional groups carried on the molecular structures, so the difficulty of modifying them is also different. The more polar the molecules of a substance, the easier it is to be adsorbed by other substances and the easier it is to modify. The functional group carried on the molecular structure of a substance is one of the most important factors that determine its molecular polarity. The more polar functional groups (such as -SO3H, -CONH, -COOH, -CI, -OCH, etc.) carried by the molecule, the stronger the polarity and the greater the force...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/20
Inventor 方百红王东林
Owner 杭州荣彩实业有限公司
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