A kind of preparation method of c.i.14 pigment yellow 2gsrw

A pigment yellow and solution technology, applied in the direction of disazo dyes, etc., can solve the problems of poor hydrophilic application performance of pigments, environmental pollution, low reaction conversion rate, etc., and achieve excellent dispersibility and transparency, hydrophilicity and Excellent stability and viscosity reduction effect

Active Publication Date: 2015-10-07
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 present invention mainly solves the deficiencies in the prior art, and provides a solution to the technical problems existing in the prior art, such as the use of pigments pollutes the environment, the hydrophilic application performance of the pigment itself is poor, and the reaction conversion rate is not high. A kind of preparation method of C.I.14 pigment yellow 2GSRW

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: a kind of preparation method of C.I.14 pigment yellow 2GS, carry out according to the following steps:

[0034] (1) Preparation of diazo solution:

[0035] In 2000 parts of purified water, add 2 parts of metal ion complexes and 283 parts of hydrochloric acid to form a mixed solution, and the concentration is 100% of 200 parts of 3,3 , - Dichlorobenzidine is added to the mixed liquor, and then fully beaten, the beating speed is 64r / min, and the 3,3 , -Dichlorobenzidine is beaten into fine particles, directly add 2000L of ice water, lower the temperature of the mixed solution to 0°C, add 114 parts of sodium nitrite solution to the mixed solution, stir well, and the stirring time is 120 minutes, The stirring speed is 64r / min to make the diazo fully enough, and the KI test paper shows bluer to slightly blue during the detection process. After the diazo is over, add 1 part of sulfamic acid to neutralize the excess sodium nitrite. KI test paper shows ...

Embodiment 2

[0055] Embodiment 2: a kind of preparation method of C.I.14 pigment yellow 2GS, carry out according to the following steps:

[0056] (1) Preparation of diazo solution:

[0057] In 2000 parts of purified water, add 2.5 parts of metal ion complexes and 283 parts of hydrochloric acid to form a mixed solution, and the concentration is 100% of 200 parts of 3,3 , - Dichlorobenzidine is added to the mixed liquor, and then fully beaten, the beating speed is 64r / min, and the 3,3 , -Dichlorobenzidine is beaten into fine particles, directly add 2000L of ice water, lower the temperature of the mixed solution to 0°C, add 115 parts of sodium nitrite solution to the mixed solution, stir well, and the stirring time is 120 minutes, The stirring speed is 64r / min to make the diazo fully enough, and it shows bluer to slightly blue during the detection process with KI test paper. After the diazo is finished, add 1.5 parts of sulfamic acid to neutralize the excess sodium nitrite. KI test paper...

Embodiment 3

[0077] Embodiment 3: a kind of preparation method of C.I.14 pigment yellow 2GS, carry out according to the following steps:

[0078] (1) Preparation of diazo solution:

[0079] In 2000 parts of purified water, add 3 parts of metal ion complexes and 283 parts of hydrochloric acid to form a mixed solution, and the concentration is 100% of 200 parts of 3,3 , - Dichlorobenzidine is added to the mixed liquor, and then fully beaten, the beating speed is 64r / min, and the 3,3 ,-Dichlorobenzidine is beaten into fine particles, directly add 2000L of ice water, lower the temperature of the mixed solution to 0°C, add 116 parts of sodium nitrite solution to the mixed solution, stir well, and the stirring time is 120 minutes, The stirring speed is 64r / min to make the diazo fully enough, and the KI test paper shows bluer to slightly blue during the detection process. After the diazo is over, add 2 parts of sulfamic acid to neutralize the excess sodium nitrite. KI test paper shows slight...

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PUM

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Abstract

The invention relates to a preparation method of C.I.14 pigment yellow 2GSRW, particularly relates to a preparation method of C.I.14 pigment yellow 2GSRW, and particularly relates to a pigment. The preparation method comprises the following steps: preparing a diazonium solution, preparing a 2'-methylacetoacetanilide, preparing a 2'-methylacetoacetanilide coupling solution, preparing a rosin solution; preparing an aluminum trichloride solution; coupling. The preparation method of the C.I.14 pigment yellow 2GSRW has the advantages that the C.I.14 pigment yellow 2GSRW has hydrophilcity and stability; meanwhile the reaction conversion rate is increased.

Description

technical field [0001] The invention relates to a preparation method of Pigment Yellow 2GSRW, in particular to a preparation method of C.I.14 Pigment Yellow 2GSRW, which is a kind of pigment. 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B35/10
Inventor 方百红
Owner 杭州荣彩实业有限公司
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