A uv white inkjet ink, its preparation method and application

By introducing components such as aliphatic polyurethane acrylate and silane-modified epoxy polyester into UV inkjet ink, an interpenetrating network structure is formed, which solves the problem of insufficient adhesion of UV inkjet ink to steel substrates, achieving high adhesion and weather resistance, and making it suitable for marking steel products.

CN122587545APending Publication Date: 2026-08-18FUJIAN TAIXINQUAN TECH
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Patent Information

Application Number
CN202610886101.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-18
Publication Date
2026-08-18

AI Technical Summary

Technical Problem

Existing UV inkjet inks have insufficient adhesion to steel substrates and are easily peeled off, failing to meet the abrasion resistance and weather resistance requirements of steel products during handling, stacking, bending, and other processes.

Method used

A combination of aliphatic polyurethane acrylate, silane-modified epoxy polyester, reactive diluent monomer, photoinitiator, adhesion promoter and white pigment is used to prepare silane-modified epoxy polyester through esterification, mercapto-olefin click reaction and condensation reaction to form an interpenetrating network structure, which enhances the chemical bonding and physical adhesion between the ink film and the substrate.

Benefits of technology

It improves the adhesion, abrasion resistance, and weather resistance of the ink film on steel surfaces, ensuring that the marking layer is not easily peeled off in outdoor environments, and is suitable for high-speed inkjet printing operations.

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Abstract

This invention belongs to the field of industrial UV inkjet printing consumables technology, specifically relating to a UV white inkjet ink, its preparation method, and its application. The UV white inkjet ink contains aliphatic polyurethane acrylate, silane-modified epoxy polyester, reactive diluent monomer, photoinitiator, adhesion promoter, white pigment, and optional additives. The silane-modified epoxy polyester is prepared by the following method: esterification of a diol compound with itaconic acid, followed by a mercapto-olefin click reaction of the resulting unsaturated polyester polyol with mercaptosilane, and then a condensation reaction of the resulting silane-modified polyester polyol with halopropylene oxide to obtain the silane-modified epoxy polyester. The UV white inkjet ink provided by this invention has high adhesion to the substrate and is not easily peeled off after handling friction and outdoor exposure.
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