Aqueous resin based inkjet inks
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Solution Overview
Problem
Current digital textile printing technologies face challenges with the high cost and limited availability of self-dispersing pigments, which are necessary for maximizing colloidal stability in pigment-based inkjet inks.
Innovation Solution
The development of a dispersion of capsules composed of a polymeric shell surrounding a core, where the shell comprises a silanol containing compound or condensation product thereof covalently bonded to the polymer, providing a cost-effective alternative for inkjet inks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If self dispersing pigments are used to maximize colloidal stability in pigment-based inkjet inks, then colloidal stability is improved, but manufacturing cost increases significantly
Solution Approach 1:
The patent introduces capsules as an intermediary carrier that contains standard pigment dispersions. The capsule shell (composed of polymer and silane components) acts as a mediator between the pigment and the aqueous ink medium, providing colloidal stability without requiring expensive self-dispersing pigments. The capsule structure allows standard pigments to function effectively in aqueous environments.
Solution Approach 2:
The invention creates a composite capsule structure combining polymer materials with silane compounds. This composite shell provides both structural integrity and colloidal stability, enabling the use of conventional pigments while achieving the stability properties previously only available through expensive self-dispersing pigment formulations.
2Adaptability or versatility
If self dispersing pigments are used for digital textile printing, then printing quality and fiber compatibility are improved, but pigment availability and cost-effectiveness deteriorate
Solution Approach 1:
The capsules serve as an intermediary that enables standard pigments to achieve fiber compatibility previously only available through self-dispersing pigments. The capsule shell modifies the interaction between pigment and fiber, allowing broad fiber type compatibility without requiring expensive pigment modifications.
Solution Approach 2:
The invention creates a functional copy of the self-dispersing pigment effect through the capsule structure. Instead of modifying the pigment itself (which is expensive), the capsule replicates the colloidal stability and fiber compatibility functions at lower cost using standard pigments enclosed in specially designed carriers.
3Stability of the object's composition
If encapsulation based approaches are used for reactive binder technology, then ink stability is improved, but device complexity and production cost increase
Solution Approach 1:
The patent optimizes the capsule parameters including shell thickness, silane content, and polymer composition to achieve the necessary stability while controlling complexity. By carefully selecting and adjusting these parameters, the system achieves ink stability without excessive structural complexity or production cost.
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
This solution enhances the stability and performance of pigment-based inkjet inks, allowing for reliable digital textile printing on various fiber types while reducing production costs.
Implementation Method 1
the shell comprises a silanol containing compound or condensation product thereof covalently bonded to the polymer of the shell
Implementation Method 2
covalently bonded to the polymer of the shell
Data Source
AI summary
An aqueous dispersion of a capsule composed of a polymeric shell surrounding a core, the shell comprising a silanol containing compound or condensation product thereof covalently bonded to the polymer of the shell. The aqueous dispersion can be used in an aqueous inkjet ink composition.