Inkjet Ink Composition for Building Materials Weather Resistance
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Solution Overview
Problem
Inkjet images printed on building materials using radiation-curable inks suffer from decoloration and discoloration due to weather and sunlight, with limited weather resistance and adhesiveness issues when using inorganic pigments.
Innovation Solution
An inkjet ink composition comprising a radical polymerizable compound, a radical polymerization initiator, a colored pigment, and a dispersing agent, with specific components like benzyl (meth)acrylate, monofunctional or bifunctional (meth)acrylate compounds, and inorganic pigments such as Pigment Blue 28, Pigment Yellow 42, and Pigment Yellow 184, which are cured using active light radiation for improved adhesion and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic pigments are used to improve weather resistance, then weather resistance is improved, but adhesiveness deteriorates
Solution Approach 1:
The patent introduces a silane-modified polymer as an intermediary substance that mediates between the inorganic pigment and the substrate. This modifier contains both silane groups (for bonding with inorganic pigments and substrates) and polymer chains (for providing adhesiveness), thus resolving the contradiction between weather resistance and adhesiveness by creating a bridging layer
Solution Approach 2:
The patent creates a composite ink composition by combining inorganic pigments with silane-modified polymers and other resin components. This composite approach allows the system to simultaneously achieve the weather resistance of inorganic pigments and the adhesiveness of the modified polymer matrix, resolving the contradiction through material composition design
2Productivity
If radiation-curable ink is used for printing on building materials, then productivity is improved, but weather resistance deteriorates due to decoloration and discoloration
Solution Approach 1:
The patent changes the chemical parameters of the ink composition by incorporating inorganic pigments (which have superior UV resistance compared to organic pigments) and silane-modified polymers (which provide enhanced weatherability). This parameter change in material composition maintains the fast-curing advantage of radiation-curable systems while improving weather resistance
Solution Approach 2:
The patent develops a composite ink system combining inorganic pigments, silane-modified polymers, and radiation-curable components. This composite material approach enables simultaneous achievement of high productivity through UV curing and improved weather resistance through the inherent stability of inorganic pigments and silane-based binders
3Reliability
If conventional radiation-curable ink is used, then curability is improved, but storage stability deteriorates
Solution Approach 1:
The patent adjusts the chemical composition parameters by selecting specific silane-modified polymers with controlled reactivity and incorporating stabilizers. These parameter changes in composition allow the ink to remain stable during storage while maintaining full curability when exposed to UV radiation, resolving the contradiction between storage stability and curability
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 inkjet ink composition achieves excellent curability, ejectability, weather resistance, and storage stability, providing a decorative building material with enhanced durability against environmental factors.
Implementation Method 1
a radical polymerizable compound as Component A, a radical polymerization initiator as Component B... which are cured using active light radiation
Implementation Method 2
a colored pigment as Component C, and a dispersing agent as Component D... at least one inorganic pigment selected from the group consisting of Pigment Blue 28, Pigment Yellow 42, and Pigment Yellow 184
Data Source
AI summary
Provided are: an inkjet ink composition for printing on building materials, the inkjet ink composition having excellent curability, inkjet ejectability, weather resistance of a cured ink composition, adhesiveness of a cured ink composition, and ink storage stability; an inkjet ink set for printing on building materials; and an inkjet recording method. Also, a decorative building material having excellent weather resistance is provided. The inkjet ink composition for printing on building materials of the present invention includes a particular radical polymerizable compound as Component A; a radical polymerization initiator as Component B; a colored pigment as Component C; and a (dispersing agent as Component D.