Processing preparation method of pigment yellow

A technology of pigment yellow and pigmentation, which is applied in chemical instruments and methods, organic dyes, azo dyes, etc., can solve the problems of complex process and poor color fastness, and achieves simple production method, excellent light fastness, and good coverage. effect of ability

Pending Publication Date: 2022-07-01
双乐颜料泰兴市有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for processing and preparing Pigment Yellow, so as to solve the problems of complicated process and poor color fastness during the preparation of the existing Pigment Yellow 151 proposed in the above-mentioned background technology.

Method used

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] In the embodiment of the present invention, a kind of processing preparation method of pigment yellow, comprises the following steps:

[0021] Step 1: Selection of raw materials;

[0022] Step 2: removal of excess nitrous acid;

[0023] Step 3: the reaction of raw materials;

[0024] Step 4: heat treatment;

[0025] Step 5: Pigmentation treatment.

[0026] Described step 1: selection of raw materials, using anthranilic acid as a diazo component, then dissolving in an aqueous hydrochloric acid solution, and re...

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Abstract

The invention discloses a processing preparation method of pigment yellow, and particularly relates to the technical field of pigment preparation, the prepared pigment yellow 151 has greener light than C.I pigment yellow 154 and more red light than pigment yellow 175, the hue angle is 97.4 degrees (1 / 3SD), the specific surface area is 23m < 2 > / g, and the pigment yellow 151 has good covering power; the light fastness is excellent, a sample is colored in alkyd melamine resin, the weather fastness is 5-grade gray scale, the dilution color is still 4 grade, and the heat-resistant stability in HDPE (high-density polyethylene) with 1 / 3 standard depth is 260 DEG C / 5min; the product is suitable for high-grade industrial coatings and automobile primers, can be used together with phthalocyanine and inorganic raw materials, and can also be used for coloring polyester laminated plastic film printing ink.

Description

technical field [0001] The invention specifically relates to the technical field of pigment preparation, in particular to a processing and preparation method of pigment yellow. Background technique [0002] Pigment yellow, the molecular formula is C17H15ClN4O5, there are 15 kinds of dosage forms of this variety. Compared with C.I. Pigment Yellow 1 under the same color strength, it has low solubility in aliphatic and aromatic hydrocarbon solvents, good crystallization resistance, better light resistance and durability, and can give more transparent printing ink; than C.I. Pigment Yellow 74 Slightly stronger red light, its coloring intensity is 1 times higher under the same particle size. Mainly used for latex paint, paper coloring, water-based dispersibility application, with good alkali resistance. [0003] When the existing pigment yellow 151 is prepared, the process is complicated and the color fastness is poor. SUMMARY OF THE INVENTION [0004] The purpose of the pre...

Claims

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Application Information

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IPC IPC(8): C09B29/33C09B29/03
CPCC09B29/338C09B29/0007
Inventor 葛扣根欣文卫江国祥史庆乐
Owner 双乐颜料泰兴市有限公司
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