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Preparation method of pigment slurry for UV photocurable ink-jet printing

A pigment color paste and inkjet printing technology, which is applied in the field of coating chemistry, can solve the problems of short curing time, low curing temperature, and limited application, and achieve the effects of good stability, high film-forming strength, and high curing efficiency

Active Publication Date: 2015-09-16
ZHEJIANG NAMEI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] UV light curing is to use the energy of ultraviolet light to initiate the polymerization and crosslinking reaction between the low-molecular prepolymer or oligomer in the coating and the monomer molecule as a reactive diluent to obtain a hardened paint film. Chemical bonds achieve chemical drying, which has the advantages of short curing time, low curing temperature, and low volatile matter, which are energy-saving, resource-saving, pollution-free, and high-efficiency. Human skin and eyes have a strong irritating effect, which affects the health of the operator; in addition, many reactive diluents are difficult to completely react during ultraviolet irradiation, and residual monomers directly affect the long-term performance of the cured film and limit the Its application in production and life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Disperse 2wt% Pigment Yellow 12 in 4wt% diethylene glycol stearate dispersant and 34wt% deionized water mixture, stir at high speed for 3 hours to prepare a pigment dispersion; add 19wt% 2- Phenoxyethyl acrylate, 26 wt% 3',4'-epoxycyclohexylcarboxylate, 3,4-epoxycyclohexylmethyl acrylate, 14 wt% urethane acrylate, uniformly stirred and transferred to a three-roll mill, high pressure Grind 3 times; add 0.5wt% cationic photoinitiator diaryliodonium hexafluoroantimonate, 0.5wt% cracking photoinitiator α, α-diethoxyacetophenone to the slurry successively, and transfer Put it on a three-roll mill, grind it twice under high pressure, keep the temperature of the slurry below 40°C during the grinding, and then get the pigment paste.

[0017] The particle size of the pigment paste is 310nm, and the prepared ink has the advantages of fast initiation efficiency, bright color, good film-forming property, strong adhesion, strong abrasion resistance and the like when printed on fabri...

Embodiment 2

[0019] Disperse 4wt% Pigment Red 38 in a mixed solution of 5wt% isomeric decanol polyoxyethylene ether dispersant and 31wt% deionized water, and stir at high speed for 3 hours to prepare a pigment dispersion; add 17wt% 1 to the pigment dispersion, 6-hexanediol acrylate, 24wt% 3-ethyl-3-hydroxymethyl oxetane, 18wt% polyether acrylate, uniformly stirred and transferred to a three-roll mill, and high-pressure milled for 3 times; 0.4 wt% cationic photoinitiator triphenylsulfonium hexafluorophosphate, 0.6wt% cleavage type photoinitiator 2-hydroxyl-2-methyl-1-phenyl-1-acetone were added to the slurry successively and transferred to On a three-roller mill, high-pressure milling is performed twice, and the temperature of the slurry is kept below 40°C during the milling to obtain the pigment paste.

[0020] The particle size of the pigment paste is 296nm, and printing on wood with various inks has the advantages of fast initiation efficiency, good leveling, bright colors, and strong ab...

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PUM

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Abstract

The invention discloses a preparation method of pigment slurry for UV photocurable ink-jet printing and belongs to the field of a paint chemical technology. A pigment is dispersed in a disperse system and undergoes refinement treatments such as three-roll milling and the like to prepare a slurry system containing cationic and nonionic two-photon initiators. After the pigment slurry is used in ink, two-photon initiator curing can be realized through UV illumination. The pigment slurry has advantages of high curing efficiency, high film-forming strength, good adhesive force and strong abrasive resistance. Particle size of the pigment slurry is 200-450 nm, and the pigment slurry has good stability. After standing, there is no layering or caking phenomenon.

Description

technical field [0001] The invention discloses a method for preparing pigment color paste for UV photocuring inkjet printing, which belongs to the technical field of paint chemistry. Background technique [0002] UV light curing is to use the energy of ultraviolet light to initiate the polymerization and crosslinking reaction between the low-molecular prepolymer or oligomer in the coating and the monomer molecule as a reactive diluent to obtain a hardened paint film. Chemical bonds achieve chemical drying, which has the advantages of short curing time, low curing temperature, and low volatile matter, which are energy-saving, resource-saving, pollution-free, and high-efficiency. Human skin and eyes have a strong irritating effect, which affects the health of the operator; in addition, many reactive diluents are difficult to completely react during ultraviolet irradiation, and residual monomers directly affect the long-term performance of the cured film and limit the Its appl...

Claims

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Application Information

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IPC IPC(8): C09D11/322
CPCC09D11/322
Inventor 张涛李锐田尧张开瑞
Owner ZHEJIANG NAMEI MATERIAL TECH