Universal Pigment Paste Resin for Solvent and Water-Borne Paints
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Solution Overview
Problem
Current pigment pastes are not compatible with both solvent-borne and water-borne paints, and do not work well with the usual range of binder resins, limiting their versatility in tinting systems.
Innovation Solution
A paste resin is developed as a mixture of a water-reducible alkyd resin and a basic acrylic copolymer resin, which includes specific vinylic monomers and hydrophilic components to enhance dispersing and wetting power, allowing compatibility with various pigments and binder resins, including both solvent-borne and water-borne systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single resin formulation is used for pigment paste, then compatibility with multiple binder resins and paint systems is improved, but the dispersing power and wetting properties may be insufficient for various pigment types
Solution Approach 1:
The paste resin is formulated as a composite system combining water-reducible alkyd resin and basic acrylic copolymer resin in specific ratios. This composite structure allows the paste to exhibit both broad compatibility with different binder resins (solvent-borne and water-borne) and sufficient dispersing/wetting power for various pigment types, resolving the contradiction between versatility and performance reliability
Solution Approach 2:
The invention specifies precise parameter ranges for the resin components: acid number of water-reducible alkyd resin (0.2-5 mg/g), hydroxyl number (30-100 mg/g), and composition ratios (70-30 wt% alkyd, 30-70 wt% acrylic). By controlling these parameters within optimal ranges, the paste achieves universal compatibility while maintaining reliable dispersing and wetting properties across different paint systems
2Adaptability or versatility
If separate pigment paste formulations are used for solvent-borne and water-borne paints, then compatibility with specific binder resins is improved, but stock control and logistics complexity increases
Solution Approach 1:
The paste resin formulation is designed with multi-functional characteristics that enable it to serve as a universal base compatible with both solvent-borne and water-borne paint systems. By incorporating both water-reducible alkyd and basic acrylic copolymer components, a single paste formulation can be used across different paint types, eliminating the need for separate formulations and simplifying stock control and logistics operations
3Ease of manufacture
If conventional pigment paste formulations are used, then manufacturing simplicity is maintained, but compatibility with the usual range of binder resins is limited
Solution Approach 1:
The paste resin is pre-formulated with a balanced composition of water-reducible alkyd resin and basic acrylic copolymer resin, along with appropriate solvents and additives, to ensure broad compatibility with the usual range of binder resins before application. This preliminary optimization of the resin base allows the pigment paste to be universally compatible while maintaining ease of manufacture through standardized production processes
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 paste resin achieves high pigment dispersion and color stability in both solvent-borne and water-borne paints, offering universal compatibility and performance comparable to commercial pigment pastes, eliminating the need for separate formulations for different paint binders.
Implementation Method 1
The paste resin should have sufficient dispersing and wetting power to disperse various pigments
Implementation Method 2
The paste resin achieves high pigment dispersion and color stability
Data Source
AI summary
The invention relates to a paste resin AB which is a mixture of a water-reducible alkyd resins B and a basic acrylic copolymer resin A comprising at least one amino group-containing vinyl type monomer A1, and a method of use thereof formulating both water-borne and solvent-borne tinted paints with a wide variety of pigments.