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Preparation method for C.I.112 pigment red FGR

A pigment red and chromophore technology, which is applied in the preparation field of C.I. Pigment Red 112, can solve the problems of poor hydrophilic application performance of pigments, environmental pollution, low reaction conversion rate, etc., and achieves inhibition of re-aggregation, enhancement of hydrophilicity, The effect of increased utilization

Inactive Publication Date: 2013-01-09
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. Pigment Red 112, which mainly solves the pollution of the environment caused by the use of pigments in the prior art, the hydrophilic application performance of the pigment itself is relatively poor, and the reaction Technical problems such as low conversion rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: the preparation method of a kind of C.I. pigment red 112 of this example, its steps are:

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

[0026] b. Preparation of naphthol AS-D alkaline solution: Add 135 parts by weight of NaOH with a concentration of 30% to 1000 parts by weight of water, heat up to 90°C, add 10 parts by weight of rosin resin and keep it for 0.08 hours, add 145 p...

Embodiment 2

[0029] Embodiment 2: the preparation method of a kind of C.I. pigment red 112 of this example, its steps are:

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

[0031] b. Preparation of naphthol AS-D alkaline solution: Add 130 parts by weight of NaOH with a concentration of 29% in 1000 parts by weight of water, heat up to 88°C, add 8 parts by weight of rosin resin and keep it for 0.08 hours, add 143 par...

Embodiment 3

[0034] Embodiment 3: the preparation method of a kind of C.I. pigment red 112 of this example, its steps are:

[0035] a. Preparation of diazo solution: Add 7 parts by weight of fatty alcohol polyoxyethylene ether to 1000 parts by weight of water to make a mixed solution, and pulp 101 parts by weight of 2.4.5-trichloroaniline into 248 mesh fineness through colloid mill After adding in the mixed solution, then the concentration of 178 parts by weight is that 30.5% hydrochloric acid, 14 parts by weight of octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate are added in the mixed solution, beating for 1 hour, and use The concentration of 113 weight parts is the diazotization of 30.5% sodium nitrite solution, makes diazonium liquid;

[0036] b. Preparation of naphthol AS-D alkaline solution: Add 138 parts by weight of NaOH with a concentration of 30.5% to 1000 parts by weight of water, heat up to 92°C, add 11 parts by weight of rosin resin and keep it for 0.1 hour, add 1...

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

Claims

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Application Information

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Patent Type & Authority Patents(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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