Coloring Composition Phosphorus Surface Treatment Curved Surfaces
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Solution Overview
Problem
Existing methods for producing glossy ornaments, such as metal plating and foil stamp printing, are difficult to apply to curved surfaces, and using metal particles without surface treatment fails to achieve sufficient glossy and adhesive properties.
Innovation Solution
A coloring composition comprising metal pigment, an acrylic-based resin with an acid value of 200 mgKOH/g or less, and a liquid medium component, where the metal particles are surface-modified with a specific surface treatment agent, such as compounds represented by formulas (1) and (2), to improve dispersion stability, glossy feeling, and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If metal particles are used without surface treatment, then the composition can be applied to curved surfaces, but the glossy feeling and adhesion are insufficient
Solution Approach 1:
The patent applies parameter changes by modifying the surface treatment agent from conventional fluorine-based compounds to phosphorus-based compounds with specific molecular structures (formulas 1 and 2). This chemical parameter change enables both curved surface applicability and sufficient adhesion/glossiness to be achieved simultaneously, resolving the technical contradiction.
Solution Approach 2:
The patent uses composite materials by combining metal particles with phosphorus-based surface treatment agents in a specific composition ratio (0.1-10 mass%). This composite approach creates a synergistic effect where the phosphorus-based treatment agent provides both the necessary adhesion to curved surfaces and the glossy appearance, eliminating the need to choose between applicability and performance.
2Reliability
If fluorine-based surface treatment agents are used, then glossy feeling is improved, but adhesion to substrate is insufficient
Solution Approach 1:
The patent applies inversion by switching from fluorine-based surface treatment agents (conventional approach) to phosphorus-based surface treatment agents (reverse approach). This inverted chemical approach fundamentally changes the interaction mechanism between metal particles and substrate, achieving both glossy feeling and strong adhesion simultaneously, whereas fluorine-based agents could only provide glossiness.
3Strength
If conventional surface treatment methods are used, then adhesion is improved, but environmental sustainability is compromised
Solution Approach 1:
The patent applies this principle by using phosphorus-based surface treatment agents that are environmentally friendly and can be easily degraded, replacing persistent fluorine-based compounds. The phosphorus-based agents provide sufficient adhesion performance while being less harmful to the environment, aligning with sustainability goals without sacrificing technical performance.
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 dispersion stability, glossy feeling, and adhesion of the colored portion to the substrate, even on curved surfaces, while avoiding the need for fluorine-based surface treatment agents, thus enhancing environmental sustainability.
Implementation Method 1
the metal particles are surface-modified with a surface treatment agent, and the surface treatment agent includes at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2)
Data Source
AI summary
A coloring composition of the present disclosure includes a metal pigment; an acrylic-based resin having an acid value of 200 mgKOH/g or less; and a liquid medium component, the metal pigment includes metal particles, the metal particles are surface-modified with a surface treatment agent, and the surface treatment agent includes at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2).(RO)aP(O)(OH)3-a (1)(R)P(O)(OH)2 (2)