Powdery Thixotropy Agent for Non-Aqueous Paint
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Solution Overview
Problem
Conventional thixotropy-imparting agents for non-aqueous paints fail to achieve sufficient thickening and liquid dripping prevention properties when applied without solvents, particularly on vertical surfaces.
Innovation Solution
A powdery thixotropy-imparting agent comprising an amide compound, a non-amide wax component, and a polymer with a polar functional group, specifically designed to be blended into non-aqueous paints with or without solvents, enhancing thickening and thixotropy properties through a condensation reaction and subsequent pulverization process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional thixotropy-imparting agents are used in non-aqueous paint without solvents, then the paint can form a thick layer, but the liquid dripping prevention properties are insufficient
Solution Approach 1:
The patent uses a composite thixotropy-imparting agent consisting of multiple components: polyamide polymer, polyester polymer, and diamide compound. This composite formulation provides both sufficient thickening properties for dripping prevention and maintains adequate fluidity for application, resolving the contradiction between reliability and ease of operation.
Solution Approach 2:
The patent optimizes the molecular weight and composition ratios of the polymer components to achieve the desired rheological properties. By controlling the weight average molecular weight of polyamide (10,000-100,000) and polyester (5,000-50,000) and their proportions, the paint achieves both thickening capability and application fluidity without solvents.
2Reliability
If conventional thixotropy-imparting agents are used with solvents, then liquid dripping prevention is achieved, but thickening properties are insufficient
Solution Approach 1:
The patent develops a thixotropy-imparting agent that functions effectively in both solvent-based and solvent-free non-aqueous paints. The composite formulation of polyamide, polyester, and diamide compounds provides universal applicability, achieving both thickening properties and dripping prevention regardless of solvent presence, thereby eliminating solvent dependency while maintaining performance.
3Ease of operation
If the paint composition is made to flow easily during application, then application is simplified, but liquid dripping prevention is compromised
Solution Approach 1:
The patent employs dynamic rheological properties through the thixotropy-imparting agent that responds to shear rate changes. During application (high shear rate), the paint flows easily; after application (low shear rate), the paint sets to prevent dripping. The composite polymer formulation creates this dynamic behavior, resolving the contradiction between application ease and dripping prevention.
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 agent effectively imparts excellent thickening and liquid dripping prevention properties to non-aqueous paints, ensuring fluidity during application and preventing dripping on vertical surfaces, even when diluted with solvents or applied without solvents.
Implementation Method 1
a powdery thixotropy-imparting agent for a non-aqueous paint, which enables to impart excellent thickening properties and/or liquid dripping prevention properties and thixotropy properties into a non-aqueous paint
Implementation Method 2
The thixotropy-imparting agent makes the paint composition easy flow at a high shearing speed field before or during applying it and makes the paint composition difficult flow at a low shearing speed field after applying it
Data Source
AI summary
The present invention provides a powdery thixotropy-imparting agent for a non-aqueous paint, a method for preparing it, and a non-aqueous paint composition including it. The powdery thixotropy-imparting agent can improve and modify physical properties of the paint composition to impart excellent thickening properties and/or liquid dripping prevention properties and thixotropy properties by adding a little of it into a non-aqueous paint, regardless of the type and the presence or absence of a solvent such as a non-alcoholic organic solvent or an alcoholic solvent included in the non-aqueous paint. A powdery thixotropy-imparting agent for a non-aqueous paint comprises; an amide compound (A) in which a primary diamine having 2-8 carbon atoms, and a hydrogenated castor oil fatty acid and/or aliphatic monocarboxylic acid having 4-18 carbon atoms are condensed, a non-amide wax component (B) and a polymer (C) having a polar functional group, and the powdery thixotropy-imparting agent imparts thickening properties, liquid dripping prevention properties, and thixotropic properties. A non-aqueous paint composition comprises; the powdery thixotropy-imparting agent for the non-aqueous paint according to claim 1 and nonaqueous-type paint ingredients, and further comprising solvents selected from the group consisting of non-alcoholic organic solvents and alcohol solvents or comprising no solvent.