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Preparation method of special phthalocyanine blue 15:3 pigment for offset printing ink

A technology of phthalocyanine blue and offset printing, which is applied in the direction of ink, application, organic dyes, etc., can solve the problems of outstanding production safety, high requirements for explosion-proof technology, and high energy consumption of the kneading machine method, and achieve low cost, little environmental pollution, and flow The effect of performance improvement

Active Publication Date: 2014-08-13
SHUANGLE CHEM PIGMENT YANGZHOU CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vertical ball milling method needs to add 3-5 times of the crude copper phthalocyanine grinding aid anhydrous calcium chloride, and at the same time add 10-30% of the crude copper phthalocyanine organic solvent, there is a large amount of calcium chloride Recycling issues, and the impact of organic solvents on the environment have always been a major burden faced by manufacturers, and the power loss is large, which has formed a certain conflict with national policies
Although the solvent treatment method reduces energy consumption, due to the high requirements for the explosion-proof technology of the solvent used, the problem of production safety is becoming more and more prominent, which is a potential safety hazard that cannot be ignored
However, the kneader method has not been widely used due to high energy consumption, small production scale and large amount of three wastes.

Method used

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  • Preparation method of special phthalocyanine blue 15:3 pigment for offset printing ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The crude copper phthalocyanine is produced by the solvent method. Urea, phthalic anhydride, cuprous, and ammonium molybdate are condensed in an alkylbenzene solvent at a high temperature of 160-190°C, and then the alkylbenzene solvent is separated by a distillation device. It is obtained by boiling to remove impurities, filtering, washing with water, drying and crushing.

[0020] Add 1000kg of crude copper phthalocyanine with a purity ≥ 98.5% and free copper ≤ 1000ppm to an 8000L ball mill, turn on the ball mill for ball milling, and control the temperature of the material in the machine at 105±2°C by adjusting the cooling water, and ball mill for 18 hours to obtain Ball milled product containing 40% α crystal form. Pass the ball-milled product through a magnetic filter in the discharge system to remove iron that is harmful to offset printing inks, and collect the product to produce Phthalocyanine Blue 15:3, the average particle size of which is less than 1 μm.

[002...

Embodiment 2

[0023] The production method of the crude copper phthalocyanine in this example is the same as that in Example 1. Add 1000kg of crude copper phthalocyanine with purity ≥ 98.5% and free copper ≤ 1000ppm to a 10000L ball mill, turn on the ball mill for ball milling, and control it by adjusting the cooling water The material temperature in the machine is 130±2°C, ball milled for 20 hours, and the ball milled product containing 20% ​​α crystal form is obtained. Pass the ball-milled product through a magnetic filter in the discharge system to remove iron that is harmful to offset printing inks, and collect the product to produce phthalocyanine blue 15:3, the average particle size of which is less than 1 μm.

[0024] Measure the offset printing ink resin, phthalocyanine blue 15:3, vegetable oil, and solvent according to the formula, mix and pre-stir for 1 hour, then heat up to 70 degrees Celsius and knead for 6 hours, and after ink pricking and tempering, the α and β mixed crystals w...

Embodiment 3

[0026] The production method of the crude copper phthalocyanine in this example is the same as in Example 1. Add 1000kg of crude copper phthalocyanine with a purity ≥ 98.5% and free copper ≤ 1000ppm to a 12000L ball mill, turn on the ball mill for ball milling, and control it by adjusting the cooling water The material temperature in the machine is 110±2°C, ball milled for 25 hours, and the ball milled product containing 32% of α crystal form is obtained. Pass the ball-milled product through a magnetic filter in the discharge system to remove iron that is harmful to offset printing inks, and collect the product to produce phthalocyanine blue 15:3, the average particle size of which is less than 1 μm.

[0027] Measure the offset printing ink resin, phthalocyanine blue 15:3, vegetable oil, and solvent according to the formula, mix and pre-stir for 1 hour, then heat up to 70 degrees Celsius and knead for 6 hours, and after ink pricking and tempering, the α and β mixed crystals wil...

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Abstract

The invention discloses a preparation method of special phthalocyanine blue 15:3 pigment for offset printing ink. The preparation method comprises the steps: conducting dry grinding to crude copper phthalocyanine in a grinder to prepare pre-activated copper phthalocyanine containing 20-40% of alpha crystal form, deironing through a multipoint magnetic filter to prepare phthalocyanine blue 15:3, metering offset printing ink resin, the pre-activated copper phthalocyanine, plant oil and solvent according to proportion, kneading, binding and hardening and tempering to obtain the final product. The overall production process mainly comprises ball-grinding and deironing, the preparation method is short in production flow, low in energy consumption, low in raw material consumption, and small in environment pollution, and the product can be directly applied in offset printing ink without the need of other treatments. The product is mainly applied to offset printing ink, is similar to pigment prepared through the vertical ball-grinding process in color, ink color, coloring strength and transparency, and the flowing property of the pigment can be obviously improved.

Description

technical field [0001] The invention relates to the field of preparation of phthalocyanine blue pigments, in particular to a preparation method of phthalocyanine blue 15:3 pigments specially used for offset printing inks. Background technique [0002] Phthalocyanine blue is a functional pigment, mainly including several series of P.B15, P.B15:1, P.B15:3, P.B15:4, P.B15:6 and aluminum phthalocyanine. It has pure and bright strong red hue, anti-crystallization, anti-flocculation, heat-resistant and stable properties, and is mainly used in coatings, plastics, inks, textile masterbatches, printing color pastes and other industries. The pigment is an allomorphic compound, based on the difference in lattice structure, has a variety of crystal forms, such as α-crystal form (phthalocyanine blue 15, 15:1, 15:2), β-crystal form (phthalocyanine blue 15:3, 15:4); γ crystal form; ε crystal form (phthalocyanine blue 15:6); δ crystal form five crystal forms of phthalocyanine blue. They e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B67/12C09D11/037
Inventor 毛顺明朱建军刘小军陈军
Owner SHUANGLE CHEM PIGMENT YANGZHOU CITY
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