Amorphous Amide Compounds for Phase Change Ink Thermal Stability
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Solution Overview
Problem
Current phase change ink materials lack improved thermal stability and scalability during synthesis, and there is a need for new amorphous materials with enhanced properties for use in phase change ink applications.
Innovation Solution
Development of amorphous monoamide and diamide compounds, specifically synthesized by reacting Amine D with various acids, which are suitable for phase change ink compositions, combining these compounds with crystalline components, optional synergists, dispersants, and colorants to create stable and scalable ink formulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If new amorphous amide compounds are developed for phase change ink, then thermal stability and viscosity profiles are improved, but synthesis complexity and scalability challenges arise
Solution Approach 1:
The patent modifies molecular parameters of the amorphous amide compounds, specifically adjusting the hydrocarbon chain length (R groups with 1-22 carbon atoms) to optimize thermal stability and viscosity while maintaining manufacturability. This parameter optimization allows tuning of glass transition temperature and melt viscosity to achieve desired ink performance without compromising synthesis scalability
Solution Approach 2:
The invention creates composite phase change ink formulations by combining amorphous amide compounds with crystalline components, colorants, and optional additives. This composite approach enhances overall ink stability and performance while the modular formulation structure facilitates scalable manufacturing through standardized production processes
2Reliability
If amorphous amide compounds with enhanced properties are synthesized, then phase change ink performance is improved, but product distribution variation occurs
Solution Approach 1:
The patent establishes specific parameter ranges for the amorphous amide compounds (R groups with 1-22 carbon atoms, particular glass transition temperature ranges, controlled melt viscosity) that ensure consistent product properties. By defining these parameter windows, the invention achieves both enhanced stability and reduced product distribution variation through controlled synthesis conditions
Solution Approach 2:
The invention implements quality control mechanisms that monitor synthesis parameters and product characteristics to maintain consistency. By establishing feedback loops that track molecular weight distribution, purity, and structural characteristics, the patent ensures reproducible product properties across production batches while maintaining enhanced stability performance
3Ease of manufacture
If conventional phase change ink materials are used, then manufacturing is simpler, but thermal stability and robustness are insufficient
Solution Approach 1:
The patent optimizes key parameters of the amorphous amide compounds including glass transition temperature (Tg), melt viscosity, and molecular structure (R group composition) to achieve superior thermal stability. These parameter optimizations enable the materials to maintain stability at elevated inkjet operating temperatures while remaining compatible with existing manufacturing infrastructure
Solution Approach 2:
The invention employs readily available starting materials and straightforward synthesis routes that mimic conventional manufacturing approaches. By using accessible precursors and standard chemical reactions, the patent achieves enhanced thermal stability without requiring complex or expensive manufacturing processes, maintaining ease of production
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 amorphous compounds demonstrate improved thermal stability and viscosity profiles, enabling robust phase change ink performance with enhanced stability and scalability, suitable for high-temperature jetting and prolonged use in inkjet printing applications.
Implementation Method 1
Phase change inks (sometimes referred to as solid inks or 'hot melt inks') are in the solid phase at ambient temperature, but exist in the liquid phase at the elevated operating temperature of an ink jet printing device
Implementation Method 2
The amorphous compounds demonstrate improved thermal stability and viscosity profiles, enabling robust phase change ink performance with enhanced stability and scalability, suitable for high-temperature jetting
Data Source
AI summary
An amorphous amide compound of the formulawherein R is selected from the group consisting of an alkyl group, an aryl group, an alkylaryl group, an arylalkyl group, and combinations thereof. An amorphous diamide compound of the formulawherein R1 is selected from the group consisting of an alkylene group, an arylene group, an alkylarylene group, an arylalkylene group, and combinations thereof.