Allylic Polymer Ink Composition Adhesion Flowability
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Solution Overview
Problem
The use of allylic polymers produced by polymerizing specific allylic compounds in ink compositions can result in insufficient printability (flowability) during printing, particularly when combined with certain pigments, leading to reduced adhesion to plastic substrates.
Innovation Solution
An active energy ray-curable ink composition containing an allylic polymer produced by polymerizing an allylic compound with a specific structure, a dispersant, and a pigment, where the dispersant has basic or acidic polar functional groups, and an ethylenically unsaturated compound, which improves adhesion to plastic substrates and flowability during printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an allylic polymer produced by polymerizing an allylic compound having a specific structure is used in the ink composition, then adhesion to plastic substrates is improved, but printability (flowability) during printing deteriorates
Solution Approach 1:
The patent introduces a specific dispersant as an intermediary substance to mediate between the allylic polymer and pigment. The dispersant has a molecular structure containing specific functional groups that enable it to compatibilize the polymer-pigment interface, thereby maintaining both adhesion to plastic substrates and printability during printing operations
Solution Approach 2:
The patent modifies the chemical parameters of the ink composition by specifying particular functional groups in the dispersant molecule. This parameter change in the dispersant's molecular structure enables it to simultaneously improve adhesion properties and maintain flowability, resolving the contradiction between these two performance aspects
2Ease of operation
If a dispersant with basic or acidic polar functional groups is added to improve flowability, then printability is improved, but compatibility with other ink components may deteriorate
Solution Approach 1:
The patent applies local quality by designing the dispersant with specific functional groups localized at particular positions in the molecular structure. This localized functional group placement enables the dispersant to selectively interact with specific ink components, improving flowability while maintaining overall composition compatibility through targeted molecular design
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition achieves excellent flowability and adhesion to synthetic polymer substrates, particularly plastic substrates, while maintaining compatibility with other ink components, enhancing printability and curing efficiency.
Implementation Method 1
an active energy ray-curable ink composition containing an allylic polymer produced by polymerizing an allylic compound
Data Source
AI summary
The present invention aims to provide an active energy ray-curable ink composition which can constitute a composition having good flowability during printing. The present invention relates to an active energy ray-curable ink composition, containing an allylic polymer, a dispersant, and a pigment, the allylic polymer being produced by polymerizing an allylic compound represented by the following formula (I): wherein R1 and R2 each represent H or CH3; X represents an a-valent group having an unsubstituted saturated or partially unsaturated four- to eight-membered cyclic backbone; and a represents 2 or 3.