Polymer Dispersant for Low-Viscosity Filled Resin Processing
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Solution Overview
Problem
Existing halogen-based resin compositions with fillers face high viscosity issues, leading to processing difficulties and susceptibility to breakage due to bending fatigue, and current viscosity reducing agents are insufficient in effectiveness.
Innovation Solution
A polymer dispersant composed of specific structural units derived from monomers with hydroxy groups and hydrophobic groups, which is used in an in-oil dispersion and halogen-based resin composition to reduce slurry viscosity and improve moldability and processability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fillers such as calcium carbonate are blended into halogen-based resin compositions, then the resin composition gains functional properties, but the viscosity increases significantly making processing difficult
Solution Approach 1:
The patent introduces a polymer dispersant as an intermediary substance to mediate between the filler particles and the resin matrix. This dispersant contains specific structural units that adsorb onto filler surfaces while also being compatible with the resin, thereby reducing interparticle friction and viscosity without sacrificing the functional properties of the filler-containing composition.
2Ease of operation
If conventional diluents or viscosity reducing agents are added to reduce the viscosity of halogen-based resin compositions, then some viscosity reduction is achieved, but the effect is insufficient especially when inorganic fillers are blended
Solution Approach 1:
The patent changes the fundamental parameter of viscosity reduction from using simple diluents that merely reduce resin viscosity to using a polymer dispersant that specifically targets filler-resin interfaces. This parameter change addresses the root cause of high viscosity in filled systems rather than treating the symptom, achieving reliable and sufficient viscosity reduction even with inorganic fillers present.
3Ease of operation
If conventional diluents are used to reduce viscosity, then some processing improvement is achieved, but they cannot suppress breakage due to bending fatigue in processed products
Solution Approach 1:
The polymer dispersant acts as an intermediary that not only reduces viscosity for improved processability but also forms a protective interface layer around filler particles. This interface layer prevents stress concentration and crack propagation at filler-resin boundaries, thereby suppressing breakage due to bending fatigue in the final processed products.
4Stability of the object's composition
If aromatic solvents are used to prepare in-oil dispersions, then good dispersibility is achieved, but environmental concerns arise
Solution Approach 1:
The patent changes the solvent type from aromatic to non-aromatic organic solvents while maintaining effective dispersibility through the use of the polymer dispersant. The dispersant's specific molecular structure compensates for the lower solvent power of non-aromatic solvents, ensuring good dispersibility without the environmental harm associated with aromatic compounds.
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 dispersant effectively reduces slurry viscosity, enhancing the applicability and moldability of in-oil dispersions and improving the processability and low-temperature bending resistance of halogen-based resin compositions.
Implementation Method 1
The polymer dispersant containing a structural unit derived from a monomer having a hydroxy group effectively reduces slurry viscosity
Implementation Method 2
a polymer dispersant containing a structural unit derived from a monomer represented by general formula (1) and a structural unit derived from a monomer having a hydroxy group
Implementation Method 3
a polymer dispersant containing a structural unit derived from a monomer having a hydroxy group
Implementation Method 4
the polymer dispersant effectively reduces slurry viscosity, enhancing the applicability and moldability of in-oil dispersions and improving the processability and low-temperature bending resistance of halogen-based resin compositions
Data Source
AI summary
The present invention relates to a polymer dispersant for a non-aqueous solvent, containing a structural unit derived from a monomer represented by general formula (1) below and a structural unit derived from a monomer having a hydroxy group: In general formula (1), R1, R2, and R3 are each selected from a hydrogen element or a methyl group, X1 represents an oxygen element, an ester group, an amide group, or -CH2O-, Y1 represents a repeating unit of an alkylene glycol having from 2 to 4 carbons, R4 represents a hydrogen element or an alkyl group having from 1 to 20 carbons, and n represents the number of repeating units of the alkylene glycol.