Poly(esteramide) Polymer Heat Resistance via Aliphatic Chains
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Solution Overview
Problem
Current polymeric compositions used in automotive parts lack sufficient heat resistance, particularly when exposed to temperatures above 120°C, and existing methods to enhance heat resistance, such as incorporating aromatic rings, are costly and limit the use of renewable resources.
Innovation Solution
Development of a poly(esteramide) polymer using a compound of formula (I) derived from glutaric or succinic acid, which improves heat resistance by increasing the melting point of polymeric compositions, allowing their use in high-temperature applications like vehicle parts, and can be prepared using a method involving coupling and polymerization steps with specific catalysts and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If aromatic rings are incorporated into the polymer to improve heat resistance, then heat resistance is improved, but cost increases and crystallization kinetics become much lower
Solution Approach 1:
The patent changes the chemical structure parameters by using aliphatic chains with specific lengths (n and p from 2 to 12) instead of aromatic rings, achieving heat resistance through controlled molecular architecture rather than aromatic content. This allows maintaining good crystallization kinetics while achieving the required thermal stability.
Solution Approach 2:
The patent creates a composite structure within the polymer chain combining ester and amide functions with specific aliphatic chain lengths, achieving synergistic heat resistance without relying on expensive aromatic rings. The composite molecular structure provides both thermal stability and good crystallization behavior.
2Temperature
If aromatic rings are incorporated into the polymer to improve heat resistance, then heat resistance is improved, but the polymer cannot stem from renewable resources
Solution Approach 1:
The patent changes the chemical building blocks from aromatic rings to aliphatic chains derived from renewable resources like adipic acid and 1,4-butanediol. This parameter change maintains heat resistance through controlled molecular architecture while enabling the polymer to be produced from sustainable, renewable feedstocks.
Solution Approach 2:
The patent uses inexpensive, renewable aliphatic building blocks (adipic acid, 1,4-butanediol) instead of expensive aromatic rings, achieving cost-effective heat-resistant polymers that can be produced from sustainable resources. The short aliphatic chains provide the necessary thermal stability without the cost and renewability constraints of aromatic alternatives.
3Temperature
If a large molar proportion of aromatic rings (more than 25% molar) is incorporated into the polymer, then heat resistance is improved, but the polymer becomes amorphous in the injection process
Solution Approach 1:
The patent changes the molecular architecture by using aliphatic chains with specific lengths (n and p from 2 to 12) instead of aromatic rings, enabling the polymer to maintain crystalline structure during injection. This parameter change allows the polymer to be processable while achieving the required heat resistance through controlled molecular geometry rather than aromatic content.
Solution Approach 2:
The patent creates a composite molecular structure with ester and amide functions combined with specific aliphatic chain lengths, achieving heat resistance without sacrificing crystallinity. The composite structure provides both thermal stability and the ability to form crystalline regions during processing, avoiding the amorphous problem associated with high aromatic content.
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 resulting poly(esteramide) polymer effectively enhances the heat resistance of polymeric compositions, enabling them to withstand temperatures above 120°C and can be produced from renewable resources, making it suitable for use in automotive parts and other applications requiring thermal stability.
Implementation Method 1
The invention relates to a compound of formula (I) which can be used as a starting product for preparing a poly(esteramide) polymer useful as an additive for improving the heat resistance of a polymeric composition
Implementation Method 2
The resulting poly(esteramide) polymer effectively enhances the heat resistance of polymeric compositions, enabling them to withstand temperatures above 120°C
Data Source
AI summary
The invention relates to a compound of the following formula (I): to its method for making it and to its uses for preparing a polymer useful for increasing the heat resistance of polymeric compositions.