Active Energy Ray-Curable Ink with Rosin-Modified Phenolic Resin
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Active energy ray-curable ink compositions face challenges in incorporating high amounts of biomass-derived ingredients due to compatibility issues with monomers and oligomers, and they lack materials with high pigment dispersibility, such as rosin-modified phenolic resins, which are commonly used in conventional ink compositions.
Innovation Solution
Incorporating specific fats and oils derived from animals or vegetables with specific solubility parameters, along with rosin-modified phenolic resins, to enhance compatibility and pigment dispersibility in the ink composition, allowing for higher biomass content and improved curing properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional ink compositions use high amounts of monomers and oligomers for active energy ray curability, then drying speed is improved, but the rate of biomass-derived ingredients decreases
Solution Approach 1:
The patent changes the chemical parameters of the liquid ingredient by specifying a solubility parameter (sp value) range of 9.0-11.0 (cal/cm³)¹/² and requiring saturation of ethylenically unsaturated bonds. This parameter optimization enables the liquid ingredient to be compatible with both monomers/oligomers and biomass-derived resins, allowing simultaneous achievement of fast drying speed and high biomass content
Solution Approach 2:
The patent creates a composite ink composition system that integrates multiple material types: monomers/oligomers for curability, biomass-derived resins (rosin-modified phenolic resins) for pigment dispersibility, and specifically selected liquid ingredients (fats/oils with sp value 9.0-11.0) as compatibilizers. This composite approach allows the system to exhibit all desired properties simultaneously
2Reliability
If biomass-derived ingredients are increased in active energy ray-curable ink compositions, then environmental friendliness is improved, but compatibility with monomers and oligomers deteriorates
Solution Approach 1:
The patent introduces a specific liquid ingredient (fat or oil with sp value 9.0-11.0 (cal/cm³)¹/² and saturated ethylenically unsaturated bonds) as an intermediary substance. This liquid ingredient acts as a compatibilizer that bridges the compatibility gap between biomass-derived resins and monomers/oligomers, enabling stable mixing and homogeneous distribution of all components
Solution Approach 2:
The patent optimizes the solubility parameter (sp value) of the liquid ingredient to fall within 9.0-11.0 (cal/cm³)¹/², which matches well with both biomass-derived resins and monomers/oligomers. This parameter matching ensures thermodynamic compatibility and stable composition throughout the ink system
3Manufacturing precision
If rosin-modified phenolic resins are used for high pigment dispersibility, then print quality is improved, but compatibility with active energy ray curable components deteriorates
Solution Approach 1:
The specific liquid ingredient (fat/oil with sp value 9.0-11.0 (cal/cm³)¹/²) serves as a mediator that enables rosin-modified phenolic resins to be compatible with monomers and oligomers. The liquid ingredient reduces interfacial tension and improves wetting between the resin and curable components, ensuring homogeneous dispersion and stable composition
Solution Approach 2:
The patent specifies that the liquid ingredient must have a solubility parameter (sp value) of 9.0-11.0 (cal/cm³)¹/² and saturated ethylenically unsaturated bonds. These parameter specifications ensure that the liquid ingredient can simultaneously solvate rosin-modified phenolic resins and be miscible with monomers/oligomers, achieving compatible mixing of all components
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 modified ink composition achieves superior pigment dispersibility and increased biomass content, enabling faster curing and improved print quality with enhanced environmental sustainability.
Implementation Method 1
the ingredients contained in the ink composition can be polymerized by irradiation with ultraviolet rays or electron beams to achieve the drying
Data Source
AI summary
To provide an active energy ray-curable ink composition that increase the content of raw materials derived from biomass and contains a material having superior pigment dispersibility, such as a rosin-modified phenol resin. An active energy ray-curable ink composition containing a compound having one or more ethylenically unsaturated bonds, a specific resin, and a specific liquid ingredient is provided, wherein the specific resin is at least one selected from the group consisting of rosin-modified phenol resins, rosin-modified maleic acid resins, rosin-modified alkyd resins, gilsonite resins, and asphalt resins, and the specific liquid ingredient is fat and oil that is derived from animals or vegetables or a modified product thereof having no ethylenically unsaturated bonds and a solubility parameter value (hereinafter referred to as sp value) of 9.0 (cal/cm3)1/2 to less than 11.0 (cal/cm3)1/2 as measured by turbidimetric titration.