Modified Carmine Colorant Polymer Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional colorants used in polymers face challenges such as poor thermal stability, lightfastness, and environmental impact, particularly with petroleum-based reagents and dyes, necessitating the development of biorenewable alternatives that can be effectively incorporated into polymerization reactions without additional processing steps.
Innovation Solution
A modified carmine-based biobased colorant is integrated into polymerization reactions, such as polyester polycondensation, where carmine can form part of the polymer backbone or be covalently attached, providing a stable and environmentally friendly red/orange/purple color without the need for extra coloring steps, suitable for various applications including plastics, inks, and paints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional dyes are used to color polymers, then the colorant is soluble and easy to incorporate, but the thermal stability and lightfastness are poor
Solution Approach 1:
The patent uses lake pigments which are composite materials formed by precipitating dye molecules onto inert carrier particles (such as aluminum hydroxide, calcium carbonate, or silica). This composite structure combines the solubility and color intensity of dyes with the thermal stability and lightfastness of pigments, resolving the contradiction between ease of incorporation and reliability.
2Reliability
If conventional pigments are used to color polymers, then the thermal stability and lightfastness are improved, but the dispersion in solvent is difficult
Solution Approach 1:
The patent employs dispersing agents and surfactants as intermediaries to facilitate the dispersion of lake pigment particles in solvents and polymer matrices. These intermediary substances reduce surface tension and prevent agglomeration, making it easier to incorporate pigments while maintaining their inherent thermal stability and lightfastness.
3Reliability
If petroleum-based colorants are used in polymer synthesis, then the coloring performance is achieved, but the environmental impact and health concerns increase
Solution Approach 1:
The patent transitions from petroleum-based synthetic dyes and pigments to naturally-derived colorants from biological sources such as annatto seeds, beetroot, turmeric, and berries. This parameter change in the source material maintains acceptable coloring performance while eliminating the harmful environmental and health effects associated with petroleum-based chemicals and heavy metal content.
Data Source
AI summary
The present disclosure provides a modified carmine which can comprise polymers, such as, polyesters, or conjugating molecules, such as, polycarboxylic acids.