Solvent Blue 5 Marker Resin for High-Purity Color Density
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing marker formulations face challenges in achieving high purity, high viscosity, and stable color density, particularly for blue dyes, due to the presence of extraneous ions and metals like copper, which are difficult to exclude while maintaining viscosity and color strength.
Innovation Solution
A marker pen formulation using a resin, solvent, and Solvent Blue 5 dye, with controlled chloride, metal, and sulfur content, along with a synthetic clay thickener, to achieve a viscosity of at least 10,000 centipoise, drying to a hard film within 60 seconds, and maintaining purity standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If blue dyes are used to achieve color strength, then color density is improved, but chloride impurities and metal content increase
Solution Approach 1:
The patent extracts and removes harmful impurities (chloride and metal content) from the blue dye formulation while retaining the color-providing components. This is achieved through careful selection of copper-free or low-copper blue dyes and implementing purification processes that eliminate chloride contaminants, thereby resolving the contradiction between achieving color density and minimizing harmful impurities.
Solution Approach 2:
The patent changes the chemical parameters of the blue dye formulation by selecting dyes with specific molecular structures that provide adequate color strength without requiring copper complexes. By modifying the dye chemistry parameters (molecular structure, composition) rather than relying on traditional copper-based dyes, the formulation achieves color density while maintaining low metal content and chloride levels.
2Force
If thickeners are added to increase viscosity, then viscosity is improved, but purity is degraded due to thickener contaminants
Solution Approach 1:
The patent employs a disposable, single-use thickener system where a small amount of high-purity thickener is added to achieve the required viscosity, and any potential contaminants from this thickener are accepted as a temporary compromise that is offset by the overall purity of the formulation. The thickener serves its purpose of increasing viscosity without introducing significant long-term contamination issues.
Solution Approach 2:
The patent uses a composite approach by combining the base marker formulation with a carefully selected thickener that has been pre-screened for purity. The composite material system integrates the dye, solvent, resin, and thickener in a way that the thickener's contaminants are minimized through selection criteria, and the overall formulation maintains high purity while achieving the necessary viscosity characteristics.
3Loss of time
If rapid drying is achieved through solvent evaporation, then drying time is improved, but control over bead width and application precision is reduced
Solution Approach 1:
The patent employs a dynamic formulation system where the solvent composition is designed to evaporate at controlled rates, allowing the formulation to maintain its viscous properties long enough for precise bead application, then rapidly evaporate to achieve quick drying. The dynamic balance between solvent retention (for application control) and solvent evaporation (for rapid drying) resolves the contradiction between drying speed and application precision.
Solution Approach 2:
The patent changes the physical parameters of the formulation by adjusting solvent composition, resin content, and viscosity to create an optimal window where the formulation remains workable for precise application but then rapidly transitions to a dry state. By modifying parameters such as solvent volatility and formulation viscosity, the patent achieves both controlled application and rapid drying without compromise.
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 formulation provides a high purity, stable blue marker that meets stringent specifications, ensuring rapid drying and controlled bead application, suitable for environments like medical and nuclear facilities.
Implementation Method 1
The solvent evaporates to a state of dry-to-touch in a time of between 1 and 60 seconds to mark the surface
Data Source
AI summary
A marker pen is provided with a barrel, a nose cone connected to the barrel and terminating in a tip, the barrel and nose cone collectively defining a volume that holds a marker resin formulation contained within the volume, the resin formulation includes a polymer, a solvent in which the polymer is dissolved or dispersed, and an organic dye of Solvent Blue 5; with the proviso that the formulation has a chloride content of less than 100 ppm, a total metal content of less than 300 ppm, and a sulfur content of less than 250 ppm or alternatively, a thickener is present and retains the purity at a viscosity of at least 10,000 centipoise. A process of marking a surface includes applying a continuous bead of the formulation to a surface.