Aqueous ink composition, recording method, method for producing recorded matter, recorded matter, and inkjet recording apparatus

The aqueous ink composition with specific polymers addresses the challenge of substrate adhesion by using monomers with ring structures and acidic or amino groups, forming high-adhesion films on olefin resins with or without surface treatments, enhancing stability and solvent resistance.

CN119183469APending Publication Date: 2024-12-24DNP FINE CHEMICALS CO LTD
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Patent Information

Application Number
CN202380043075.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-06-30
Filing Date
2023-06-26
Publication Date
2024-12-24

AI Technical Summary

Technical Problem

Existing aqueous ink compositions struggle to achieve excellent adhesion to various substrates, particularly olefin-based plastics, even after surface treatments, and require additional binders for improved adhesion.

Method used

An aqueous ink composition containing a polymer with specific monomers, including monomer A with a ring structure and ethylenically unsaturated bond, and optionally monomer B with an acidic or amino group, which is dispersed as particles, enhancing adhesion to untreated and treated olefin resins.

Benefits of technology

The composition forms high-adhesion coating films on untreated and treated olefin resins, improving adhesion and storage stability, while maintaining solvent resistance and flexibility.

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Abstract

Provided is a water-based ink composition for inkjet discharge, which has excellent adhesion to various substrates (recording media). The water-based ink composition for inkjet discharge contains water and a resin, and the resin contains a polymer containing the following monomer A as a structural unit. Monomer A: having a ring structure and an ethylenically unsaturated bond.
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