Nonvolatile Ester Resin Modifier for Inorganic-Filler Fluidity
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Solution Overview
Problem
Existing resin compositions face issues with impaired fluidity and decreased moldability when inorganic fillers are added, leading to poor workability and productivity, especially in outdoor applications and molded articles, and current viscosity-reducing agents are insufficient or volatile.
Innovation Solution
A fluidity modifier comprising an ester resin with specific structural and molecular weight characteristics, allowing for improved fluidity without volatilization, even at low addition amounts, is used in conjunction with inorganic fillers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic filler is blended with resin composition, then gas barrier properties, electrical conductivity, heat insulation properties, and flame retardancy are improved, but original fluidity of the resin is impaired and workability and moldability are deteriorated
Solution Approach 1:
The patent introduces a fluidity modifier as an intermediary substance that mediates between the inorganic filler and resin matrix. This modifier improves the interfacial compatibility and reduces the adverse interaction between filler and resin, thereby maintaining fluidity and workability while allowing high filler loading for improved gas barrier properties, electrical conductivity, heat insulation properties, and flame retardancy.
Solution Approach 2:
The patent changes the physical and chemical parameters of the resin composition by introducing a fluidity modifier with specific molecular weight (300-3000) and acid value (3-50 mg KOH/g). These parameter changes enable the composition to maintain appropriate viscosity and fluidity even with high inorganic filler content, thus improving workability and moldability without sacrificing the functional properties provided by the filler.
2Reliability
If filler filling amount is increased to improve performance of molded articles, then durability and performance are improved, but fluidity of composition is decreased and moldability is decreased
Solution Approach 1:
The fluidity modifier acts as a mediator that enables high filler loading (improving durability and performance) while preventing excessive viscosity increase (maintaining fluidity and moldability). The modifier distributes uniformly in the resin matrix and around filler particles, reducing inter-particle friction and maintaining composition fluidity even at high filler concentrations.
Solution Approach 2:
By controlling the molecular weight (300-3000) and acid value (3-50 mg KOH/g) of the fluidity modifier, the patent optimizes the balance between filler loading and composition fluidity. These parameter changes allow the composition to achieve high filler filling amounts for improved performance while maintaining adequate fluidity for successful molding.
3Stability of the object's composition
If coupling agent is used to improve dispersibility of inorganic filler, then dispersibility is improved, but processing cost increases and preparation complexity is increased
Solution Approach 1:
The fluidity modifier performs multiple functions simultaneously: it acts as a dispersing agent for inorganic filler, a viscosity controller, and a fluidity enhancer. This multi-functionality eliminates the need for separate coupling agents and additional processing steps, thereby improving dispersibility while reducing processing complexity and cost.
Solution Approach 2:
The patent merges the functions of dispersant, viscosity modifier, and fluidity enhancer into a single fluidity modifier component. This consolidation simplifies the composition preparation process and reduces overall cost compared to using separate coupling agents and viscosity-reducing agents.
4Use of energy by moving object
If hydrocarbon-based solvent is used as viscosity-reducing agent, then viscosity is reduced, but solvent volatilizes into atmosphere during curing or molding
Solution Approach 1:
The patent replaces volatile hydrocarbon-based solvents with a non-volatile fluidity modifier that has appropriate molecular weight (300-3000) and acid value (3-50 mg KOH/g). This substitution eliminates harmful volatilization during curing or molding while maintaining the desired viscosity reduction and fluidity enhancement effects.
Solution Approach 2:
The patent converts the potential harm of solvent volatilization into a benefit by using a non-volatile fluidity modifier that provides sustained viscosity control without atmospheric contamination. The modifier's specific molecular weight and acid value characteristics enable it to provide long-lasting performance without the harmful side effects of volatile solvents.
5Object-generated harmful factors
If dialkyl ether is used as viscosity-reducing agent to reduce volatilization, then volatilization is reduced, but viscosity-reducing effect is insufficient
Solution Approach 1:
The patent optimizes the parameters of the fluidity modifier, specifically molecular weight (300-3000) and acid value (3-50 mg KOH/g), to achieve both non-volatilization and sufficient viscosity reduction. These parameter changes enable the modifier to provide strong viscosity-reducing effect while eliminating the harmful volatilization issue, overcoming the limitations of dialkyl ether-based approaches.
Data Source
AI summary
To provide a fluidity modifier capable of imparting fluidity as a composition to an inorganic filler, which has high general versatility as a composition particularly for a coating material or the like, even when an amount of the fluidity modifier added to the inorganic filler is small, and a composition containing the same. Specifically, the fluidity modifier contains an ester resin represented by the following general formula (I) or general formula (II) (Y represents a hydrogen atom or a monocarboxylic acid residue having 1 to 9 carbon atoms, G represents an aliphatic diol residue having 2 to 9 carbon atoms, A represents an aliphatic dicarboxylic acid residue having 2 to 10 carbon atoms, X represents a dicarboxylic acid residue having 1 to 8 carbon atoms, Z represents a monoalcohol residue having 2 to 10 carbon atoms, n represents the number of repeating units and is an integer of 0 to 30, and m represents the number of repeating units and is an integer of 0 to 30; G and A may be the same or different for each repeating unit, and a plurality of G may be the same as or different from each other), and has an acid value in a range of 3 to 50 and a number average molecular weight in a range of 300 to 3000.