Polymer-Bonded Perylene Dyes for Ink Solubility
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Solution Overview
Problem
Perylene dyes have low solubility and dispersibility in liquid media, limiting their suitability for applications in printing inks and other compositions, making it difficult to distinguish authentic from counterfeit products and secure documents.
Innovation Solution
Binding perylene dyes to a polymer that is soluble in the liquid medium, such as a phenolic resin, to increase their solubility and dispersibility, using covalent bonding and specific polar groups to enhance their properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If perylene dyes are used as colorants in printing ink compositions, then their fluorescence and color properties are improved, but their solubility and dispersibility in liquid media deteriorate
Solution Approach 1:
The patent applies composite materials by combining perylene dye molecules with polymer chains to form polymer-bonded perylene dyes. This composite structure integrates the fluorescent properties of perylene dyes with the solubility characteristics of polymers, resolving the contradiction between maintaining fluorescence and improving solubility in liquid media
Solution Approach 2:
The patent uses polymer chains as intermediary carriers to bond with perylene dyes. The polymer acts as a mediator that facilitates the dissolution and dispersibility of perylene dyes in liquid media while preserving their fluorescent properties, thus resolving the solubility issue without compromising the illumination intensity
2Illumination intensity
If perylene dyes are used as colorants in printing ink compositions, then their color properties are improved, but their dispersibility in liquid media deteriorates
Solution Approach 1:
The patent creates composite materials by bonding perylene dyes to polymer chains, forming polymer-bonded perylene dyes that maintain the excellent color properties of perylene while gaining improved dispersibility in liquid media through the polymer component
Solution Approach 2:
The patent changes the physical and chemical parameters of perylene dyes by bonding them to polymer chains with specific molecular weights and functional groups. This parameter change transforms the original poor dispersibility into improved dispersibility while maintaining the desired color properties
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 polymer-bonded perylene dyes exhibit improved solubility and dispersibility, enabling their effective use in printing inks and other compositions, enhancing the ability to authenticate and secure documents by providing clear differentiation from counterfeit items.
Implementation Method 1
the perylene dye may be covalently bonded to the polymer
Implementation Method 2
the liquid medium may be a polar liquid medium... the polymer may comprise at least one (recurring) monomer unit that comprises at least one polar group
Data Source
AI summary
A method of increasing the solubility and/or dispersibility of a perylene dye in a liquid medium. The method comprises binding the perylene dye to a polymer which is soluble in the liquid medium. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.