Pigment Composition Hydrogen-Bonded Adduct Chroma
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Solution Overview
Problem
There is a need for organic pigment compositions with improved coloristic properties, specifically high chroma and color strength, while reducing the amount of organic pigment used, in applications such as coatings, paints, and plastics.
Innovation Solution
A pigment composition is created by modifying organic pigments with a hydrogen-bonded, stabilized adduct, specifically using compounds of certain formulas that form two-dimensional networks through intermolecular hydrogen bonds, which are associated or intercalated with the pigment, enhancing its chromatic properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional conditioning steps (grinding, encapsulation, adsorption) are applied to crude pigments, then the pigment can be appropriately utilized for various applications, but the coloristic properties (chroma and color strength) are not sufficiently improved
Solution Approach 1:
The patent applies composite materials by combining the organic pigment with a hydrogen-bonded adduct formed from compounds of formula (I) and (II). This composite structure integrates two different chemical components that work synergistically: the pigment provides color while the adduct enhances chroma and color strength through hydrogen bonding interactions, resolving the contradiction between improving coloristic properties and avoiding complex multi-step conditioning procedures
Solution Approach 2:
The patent employs parameter changes by modifying the chemical environment of the pigment through the introduction of the hydrogen-bonded adduct. The adduct changes the local chemical parameters (hydrogen bonding capacity, molecular arrangement) around the pigment molecules, which directly improves chroma and color strength without requiring extensive physical processing steps
2Quantity of substance
If the amount of organic pigment is reduced to be cost-effective, then manufacturing costs decrease, but color strength may be compromised
Solution Approach 1:
The hydrogen-bonded adduct acts as an intermediary that amplifies the coloristic properties of the organic pigment. By introducing this mediating substance formed from compounds (I) and (II), the system achieves enhanced color strength per unit of pigment, allowing reduction of pigment quantity while maintaining or improving color performance
Solution Approach 2:
The adduct changes the effective concentration and distribution of chromophores in the system. Through hydrogen bonding, it modifies the optical parameters of the pigment molecules, increasing their effectiveness in absorbing and reflecting light, thereby achieving better color strength with less pigment material
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 resulting pigment composition exhibits improved chroma and color strength with reduced organic pigment usage, maintaining or improving color strength and stability across various applications, including coatings and plastics, while being cost-effective and thermally stable.
Implementation Method 1
a hydrogen-bonded, stabilized adduct... compounds of formula (I) and (II)... form two-dimensional networks through intermolecular hydrogen bonds
Data Source
AI summary
A pigment composition is provided comprising (a) an organic pigment and (b) an adduct containing a compound of formula (I) or a tautomeric form thereof, wherein X is O or S; Y is O, S or NR1; the group -A-B- is selected from the group consisting of -CR2=CR3-, -CR4R5-CR6R7- -CY-CR8R9-, -CX-NR10-, -CR11=N-, -CR12R13-NR14- and R1 is hydrogen, C1-C8alkyl, C3-C7cycloalkyl, C6-C10aryl or C7-C10aralkyl; R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are independently of each other hydrogen, halogen, C1-C8alkyl, C2-C8alkenyl or C6-C10aryl, or R2 and R3 form a benzoannellated ring; and/or a melamine- or pyrimidine-based compound, which is optionally substituted. The pigment composition may be used as colorant in various applications, especially in coloring high molecular weight organic material, for example, coating compositions, paints, printing inks, liquid inks, plastics, films or fibers.