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Production method of strong-solvent-resistant thermosetting organic fluorescent pigment

A technology of fluorescent pigments and production methods, applied in the directions of luminescent materials, chemical instruments and methods, inks, etc., can solve the problems of many small molecules of synthetic resins, low cross-linking degree, short time, etc., and achieves promotion of hydroxylation and etherification. Reaction, increase the degree of molecular cross-linking, and improve the effect of solvent resistance

Active Publication Date: 2014-02-19
HUANGSHAN JIAJIA FLUORESCENT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

, the existing products cannot resist the destruction of strong solvents such as ketones and esters, and the decomposition point is low at 200°C, indicating that there are too many small molecules in the synthetic resin and the degree of cross-linking is not high, and the existing products all adopt high-temperature heating reaction process , leading to the short time and insufficient reaction of the whole reaction process (including hydroxylation and etherification), resulting in insufficient performance of the final product, thereby reducing the application field of this type of product

Method used

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  • Production method of strong-solvent-resistant thermosetting organic fluorescent pigment
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  • Production method of strong-solvent-resistant thermosetting organic fluorescent pigment

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Embodiment 1

[0030] Embodiment 1, the production method of strong solvent-resistant thermosetting organic fluorescent pigment

[0031] A kind of production method of strong solvent-resistant thermosetting organic fluorescent pigment, technological process is as follows figure 1 As shown, including: one-time feeding, mixing, high-speed dispersion;

[0032] Put 128 kg of p-toluenesulfonamide, 150 kg of liquid formaldehyde (30%), 40 kg of melamine, 5kg of fluorescent dyes, 0.3kg of liquid caustic soda and 2kg of additives into the reactor, and turn on the stirring for pre-dispersion;

[0033] Open the jacket steam valve and drain valve to raise the temperature of the material to 95°C;

[0034] When the temperature of the material rises to 95°C, empty the steam in the jacket, and keep the temperature of the material in the kettle constant for 100 minutes;

[0035] Heating up, the steam pressure is controlled at 6.0kgf / cm 2 Below, control the temperature of the material to not exceed 1...

Embodiment 2

[0047] Embodiment 2, the production method of strong solvent-resistant thermosetting organic fluorescent pigment

[0048] A method for producing a strong solvent-resistant thermosetting organic fluorescent pigment, comprising: one-time feeding, mixing, and high-speed dispersion;

[0049] Put 120kg of p-toluenesulfonamide, 150kg of liquid formaldehyde (30%), 45kg of melamine, 5kg of fluorescent dye, 0.3kg of liquid caustic soda and 2kg of additives into the reactor, and turn on the stirring for pre-dispersion;

[0050] Open the jacket steam valve and drain valve to raise the temperature of the material to 96°C;

[0051] When the temperature of the material rises to 96°C, empty the steam in the jacket, and keep the temperature of the material in the kettle constant for 100 minutes;

[0052] Heating up, the steam pressure is controlled at 6.0kgf / cm 2 Below, control the temperature of the material to not exceed 130°C, and react until the agitation stops and automatically t...

Embodiment 3

[0064] Embodiment 3, the production method of strong solvent resistant thermosetting organic fluorescent pigment

[0065] A method for producing a strong solvent-resistant thermosetting organic fluorescent pigment, comprising: one-time feeding, mixing, and high-speed dispersion;

[0066] Put 110kg of p-toluenesulfonamide, 150kg of liquid formaldehyde (30%), 51kg of melamine, 5kg of fluorescent dye, 0.3kg of liquid caustic soda and 2kg of additives into the reactor, and turn on the stirring for pre-dispersion;

[0067] Open the jacket steam valve and drain valve to raise the temperature of the material to 98°C;

[0068] When the temperature of the material rises to 98°C, empty the steam in the jacket, and keep the temperature of the material in the kettle constant for 100 minutes;

[0069] Heating up, the steam pressure is controlled at 6.0kgf / cm 2 Below, control the temperature of the material to not exceed 130°C, and react until the agitation stops and automatically t...

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Abstract

The invention relates to a production method of strong-solvent-resistant thermosetting organic fluorescent pigment. The production method comprises the following steps of: primary feeding, mixing, high-speed dispersion, polymerization, constant-temperature baking, curing, coarse grinding, fine grinding, secondary feeding, mixing, color matching, detection and package, wherein the polymerization is steam low-temperature polymerization; after the step of fine grinding and before the step of secondary feeding, adding the steps of acidizing, dehydrating and drying. The production method has the advantages that due to adoption of low-temperature steam for thermal reaction, the reaction time is prolonged by 2.5 hours compared with that in the existing process, the intermolecular hydroxylation and etherification reaction are effectively enhanced; due to the acidizing process, the free formaldehyde in a product is effectively removed, unreacted small molecules at the condensation stage are promoted to react continuously, and further the molecular crosslinking degree is improved; and the decomposition points of the product are improved, the damage of strong solvents such as ketone and ester can be effectively resisted, the solvent resistance is greatly improved, and the application of the thermosetting organic fluorescent pigment in the aspects of paint and oil ink is expanded.

Description

technical field [0001] The invention relates to a production method of a thermosetting organic fluorescent pigment, in particular to a production method of a strong solvent-resistant thermosetting organic fluorescent pigment. Background technique [0002] The thermosetting organic fluorescent pigments currently on the market are mainly used in the fields of paints and inks. , the existing products cannot resist the destruction of strong solvents such as ketones and esters, and the decomposition point is low at 200°C, indicating that there are too many small molecules in the synthetic resin and the degree of cross-linking is not high, and the existing products all adopt high-temperature heating reaction process , leading to the short time and insufficient reaction of the entire reaction process (including hydroxylation and etherification), resulting in insufficient performance of the final product, thereby reducing the application field of this type of product. Contents of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/34C09K11/02C09D7/12C09D11/00
Inventor 王济民汪崇建汪跃东丁习虎盛海瑞章聪
Owner HUANGSHAN JIAJIA FLUORESCENT MATERIAL