Amine Functionalized Siloxane Resin Particles for Inkjet
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional inkjet technologies face challenges in achieving high solvent resistance, adhesion, and scratch resistance for industrial applications, particularly with aqueous inkjet inks, as existing solutions often result in polymeric structures that are soluble in water, impacting jetting performance and rheological behavior.
Innovation Solution
Development of amine functionalized siloxane resin particles through polycondensation of cationic alkoxysilane surfactants and amino functionalized alkoxysilanes, which are emulsified in water to form a dispersion that can be used in jettable aqueous liquids, pre-treatment liquids, and overprint varnishes, enhancing the physical properties of inkjet printed images without compromising jetting reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional sol-gel chemistry is used to improve solvent resistance and adhesion, then physical properties are enhanced, but the resulting polymeric structures are soluble in water which impacts jetting performance
Solution Approach 1:
The invention changes the physical state parameter of the siloxane resin from soluble polymeric structure to insoluble colloidal particles. This is achieved through controlled polycondensation to form particles with specific size range (1-1000 nm) and surface properties that prevent dissolution in aqueous media, thereby maintaining jetting performance while providing the desired solvent resistance and adhesion properties.
Solution Approach 2:
The invention creates a composite system combining colloidal siloxane resin particles with aqueous inkjet ink. The particles serve as functional additives that provide physical property enhancement (solvent resistance, adhesion) without compromising the base ink's jetting characteristics. The composite nature allows simultaneous achievement of both improved physical properties and maintained jetting performance.
2Strength
If amino functionalized siloxane resins are used to improve water fastness, then adhesion is enhanced, but the resins are very hydrophobic which is not compatible with aqueous inkjet printing liquids
Solution Approach 1:
The invention applies local quality by creating particles with differentiated surface properties. The particle core provides hydrophobic character for water fastness, while the particle surface is engineered to be hydrophilic through amino functional groups, enabling compatibility with aqueous inkjet printing liquids. This local differentiation allows simultaneous achievement of water fastness and aqueous compatibility.
Solution Approach 2:
The invention changes the surface property parameter of the siloxane resin particles by introducing amino functional groups on the particle surface. This modification transforms the overall hydrophobic character to a state where particles remain water-fast due to their core structure but are compatible with aqueous media due to their hydrophilic surface, enabling use in aqueous inkjet printing.
3Strength
If polycondensation of alkoxysilanes is performed to create resin particles, then solvent resistance is improved, but colored resin particles are formed which interfere with ink colorant
Solution Approach 1:
The invention changes the optical property parameter of the resin particles by controlling the polycondensation process to form colorless or transparent particles. This is achieved by using appropriate monomer selection, controlling particle size within 1-1000 nm range, and maintaining proper reaction conditions that prevent chromophore formation, thereby eliminating color interference while maintaining solvent resistance.
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 amine functionalized siloxane resin particles improve the solvent resistance, adhesion, and scratch resistance of inkjet printed images, maintaining jetting reliability and performance at high throughput industrial speeds, while being compatible with aqueous inkjet inks and avoiding color interference.
Implementation Method 1
The amine functionalized siloxane resin particles are formed by polycondensation of at least one cationic alkoxysilane surfactant and at least one amino functionalized alkoxysilane
Implementation Method 2
improve the solvent resistance, adhesion, and scratch resistance of inkjet printed images
Data Source
AI summary
An amino functionalized siloxane resin particle obtainable by polycondensation of a cationic alkoxysilane surfactant according to general formula I (I) and an amino functionalized alkoxysilane according to general formula (II). The amino functionalized siloxane resin particle can be incorporated in jettable liquids for inkjet printing.