Gas-Barrier Resin Composition Accelerating Crystallization
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Solution Overview
Problem
Polymers with hydroxyl groups have relatively low crystallization rates, requiring lengthy heat treatment in molding processes, which increases costs and processing time, hindering the development of high gas barrier materials with excellent oxygen-barrier properties at high humidity.
Innovation Solution
A resin composition comprising a polymer with a specific structural unit and a vinyl alcohol polymer, which accelerates crystallization, allowing for shorter heat treatment times without compromising gas barrier properties, especially against oxygen, even at high humidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polymers with hydroxyl groups are used to achieve high gas barrier properties, then oxygen-barrier performance is improved, but crystallization rate is low requiring lengthy heat treatment
Solution Approach 1:
The patent introduces a specific polymer as an intermediary substance that mediates between the base polymer and the crystallization process. This polymer contains structural units with specific functional groups that act as nucleation sites, accelerating crystallization without compromising the gas barrier properties provided by the hydroxyl-containing polymer structure.
Solution Approach 2:
The patent modifies the crystallization parameters by introducing a polymer with specific structural units that change the crystallization kinetics. The structural units contain functional groups that interact with the base polymer to alter the crystallization temperature and rate, enabling faster processing while maintaining the high gas barrier properties.
2Reliability
If lengthy heat treatment is applied to achieve sufficient crystallization, then gas barrier properties are improved, but processing time and cost increase
Solution Approach 1:
The patent incorporates structural units with specific functional groups into the polymer structure before the molding process. These pre-introduced structural units serve as ready-made nucleation sites that trigger rapid crystallization during molding, eliminating the need for lengthy post-processing heat treatment and reducing both time and cost.
Solution Approach 2:
The patent changes the crystallization parameters by introducing a polymer with structural units that have specific functional groups. These units alter the crystallization kinetics, enabling the material to achieve sufficient crystallization during standard molding cycles without requiring extended heat treatment, thus reducing processing time and cost.
3Reliability
If polymers with hydroxyl groups are used to achieve high gas barrier properties, then oxygen-barrier performance is improved, but molding process complexity increases
Solution Approach 1:
The patent creates a composite polymer structure by combining base polymer units with structural units containing specific functional groups. This composite structure integrates the gas barrier properties of hydroxyl-containing polymers with enhanced crystallization characteristics, allowing standard molding processes to achieve both high oxygen-barrier performance and sufficient crystallization without complex processing.
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 resin composition achieves high gas barrier properties and can be molded efficiently in a shorter time, reducing processing costs while maintaining excellent oxygen barrier performance at high humidity.
Implementation Method 1
a resin composition containing a specific polymer mentioned below and a vinyl alcohol polymer (B) can have a remarkably increased crystallization rate
Implementation Method 2
they may require heat treatment for a long time in molding and processing
Data Source
AI summary
A resin composition includes a polymer (A) mainly containing a structural unit represented by following Formula (1):wherein m represents an integer of 2 to 10; X1 and X2 are each hydrogen atom, hydroxyl group or a functional group that can be converted into a hydroxyl group, wherein at least one of X1 and X2 is hydroxyl group or a functional group that can be converted into hydroxyl group; R1, R2 and R3 are each hydrogen atom, hydroxyl group, a functional group that can be converted into hydroxyl group, an alkyl group, an aryl group, an aralkyl group or a heteroaryl group, wherein the plural R1s may be the same as or different from each other; and a vinyl alcohol polymer (B).