Cationic Glucan Ester Derivatives for Biodegradable Performance
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Solution Overview
Problem
Existing glucan derivatives with high levels of derivatization exhibit poor biodegradability, while those with low levels of derivatization fail to deliver optimal performance, necessitating the development of renewable and biodegradable products that match or exceed the performance of synthetic components.
Innovation Solution
The development of cationic glucan ester derivatives with a degree of substitution up to 3.0, achieved through esterification of glucans with cationic organic groups, which enhances biodegradability and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glucan derivatives are highly derivatized to improve performance, then performance is improved, but biodegradability deteriorates
Solution Approach 1:
The patent applies parameter changes by systematically varying the degree of substitution (DoS) from 0.001 to 3.0 and using different cationic organic groups (quaternary ammonium, phosphonium, sulfonium) to find the optimal balance between performance and biodegradability. This allows tuning the derivative structure to achieve both high performance and acceptable biodegradability
Solution Approach 2:
The patent creates composite structures by combining glucan backbones with various cationic organic groups through ester linkages. This composite approach allows the glucan to maintain its biodegradable nature while the cationic groups provide the desired performance characteristics for personal care, household care, and industrial applications
2Object-generated harmful factors
If glucan derivatives are lowly derivatized to improve biodegradability, then biodegradability is improved, but performance deteriorates
Solution Approach 1:
The patent uses parameter changes to optimize the DoS within the range of 0.001 to 3.0, demonstrating that even low levels of derivatization can provide adequate performance while maintaining good biodegradability. The systematic variation of parameters allows finding the minimum effective derivatization level
3Reliability
If synthetic components are used to improve performance, then performance is improved, but renewability deteriorates
Solution Approach 1:
The patent modifies natural glucan parameters through controlled derivatization with cationic organic groups, creating semi-synthetic derivatives that maintain the renewable origin of the glucan while gaining enhanced performance characteristics. This approach preserves renewability unlike fully synthetic alternatives
Solution Approach 2:
The patent creates composite materials combining renewable glucan with functional cationic groups, achieving a balance between natural renewability and synthetic performance. The glucan backbone provides renewability while the ester-linked cationic groups deliver the required functional performance
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 cationic glucan ester derivatives provide improved biodegradability and performance, making them suitable for various applications while maintaining renewable and biodegradable properties.
Implementation Method 1
contacting a glucan in a reaction with at least one esterification agent comprising a cationic organic group, wherein at least one cationic organic group is esterified to the glucan
Data Source
AI summary
Compositions are disclosed herein comprising an ester derivative of a glucan, wherein the glucan has a degree of substitution (DoS) up to about 3.0 with at least one cationic organic group that is ester-linked to the glucan. Methods are further disclosed for preparing these compositions, as well as various applications of using them.