Particulate Nucleating Agent for Resin Transparency and Dust Control
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Solution Overview
Problem
Existing particulate nucleating agents face challenges in dust workability and transparentizing properties, particularly during scale-up, with smaller particle diameters improving transparency but deteriorating handling properties, and larger particles entrapping and affecting crystallization.
Innovation Solution
A particulate nucleating agent with a controlled particle diameter profile, where the maximum particle diameter (Dmax) is between 80 μm and 300 μm, and the degree of dispersion is between 1.0% and 27.0%, improving dust workability and transparency by mild pulverization conditions and sieving, ensuring stable evaluation and enhanced handling properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the particle diameter of the particulate nucleating agent is reduced to improve transparentizing properties, then transparency is improved, but dust workability and handling properties deteriorate
Solution Approach 1:
The patent applies parameter changes by precisely controlling the particle diameter within a specific range (0.001 to 3.0 μm) and adjusting the degree of dispersion (1.0% to 27.0%) to achieve optimal balance between transparency and dust workability. This quantitative parameter optimization resolves the contradiction by finding the sweet spot where both requirements are satisfied simultaneously.
2Ease of operation
If mild pulverization conditions are used to improve dust workability, then handling properties are improved, but large particles may be entrapped and transparentizing properties deteriorate
Solution Approach 1:
The patent resolves this contradiction by changing the pulverization parameters to achieve a controlled degree of dispersion (1.0% to 27.0%) rather than complete pulverization. This intermediate parameter setting allows sufficient particle size reduction for transparency while maintaining particle integrity for good dust workability, eliminating the need for extreme pulverization conditions.
3Reliability
If the nucleating agent is added to crystalline polylactic acid to improve crystallization, then crystallization properties are improved, but dust workability and transparentizing properties have room for improvement
Solution Approach 1:
The patent applies parameter changes by optimizing the particle diameter (0.001 to 3.0 μm) and degree of dispersion (1.0% to 27.0%) of the nucleating agent. These parameter optimizations enable the nucleating agent to effectively promote crystallization of polylactic acid while simultaneously achieving satisfactory transparentizing properties, resolving the previous compromise where crystallization improvement came at the cost of transparency.
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 controlled particulate nucleating agent enhances dust workability and transparentizing properties, achieving balanced physical properties and improved productivity in thermoplastic resin molding processes.
Implementation Method 1
a technique of adding a crystal nucleating agent or a crystallization accelerator is known
Implementation Method 2
a technique of adding a crystal nucleating agent or a crystallization accelerator is known
Implementation Method 3
in a case where dry measurement of particle diameter distribution of the particulate nucleating agent is performed by using a laser diffraction particle size distribution measurement method
Data Source
AI summary
The particulate nucleating agent of the present invention is a particulate nucleating agent containing an aromatic phosphate ester metal salt represented by a predetermined formula, in which in a case where a maximum particle diameter of the particulate nucleating agent is denoted by Dmax and a degree of dispersion of the particulate nucleating agent is denoted by Dp, 80 µm ≤ Dmax ≤ 300 µm and 1.0% ≤ Dp ≤ 27.0% are satisfied.