Aryl-Alkyl Surfactant Composition for Better Biodegradability
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Solution Overview
Problem
Existing surfactants lack good toxicity and environmental profiles, as well as biodegradability, which are desirable for sustainable and safe applications.
Innovation Solution
Development of sulfonated and sulfated aryl-alkyl compounds derived from aryl aliphatic ketones through decarboxylative cross-ketonization, hydrogenation, and sulfatation or sulfonation processes, resulting in compounds with improved biodegradability and reduced toxicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional surfactants are used, then surfactant functionality is achieved, but toxicity and environmental profile are poor
Solution Approach 1:
The invention changes the chemical structure parameters of surfactants by introducing sulfonated and sulfated aryl-alkyl compounds with specific molecular architectures (formula I), where the aryl group and aliphatic chain are connected through specific linkages. This structural parameter change results in improved biodegradability and reduced toxicity while maintaining surfactant functionality, directly resolving the contradiction between harmful factors and reliability.
2Duration of action of stationary object
If conventional surfactants are used, then surfactant functionality is achieved, but biodegradability is poor
Solution Approach 1:
The surfactant molecules are segmented into distinct functional regions: an aryl group (Ar), an aliphatic chain (R3), and sulfonated or sulfated functional groups (SO3X). This segmentation allows the molecule to be designed with specific biodegradability characteristics in the aryl and functional group regions while maintaining the hydrophobic-tail and hydrophilic-head structure necessary for surfactant functionality, thus resolving the contradiction between biodegradability and reliability.
3Object-affected harmful factors
If new sulfonated and sulfated compounds are developed, then biodegradability and toxicity profile are improved, but manufacturing process complexity increases
Solution Approach 1:
The manufacturing process employs preliminary action by first synthesizing aryl aliphatic ketones through decarboxylative cross-ketonization, then sequentially performing hydrogenation and sulfatation or sulfonation. This staged preliminary action simplifies the overall manufacturing complexity by breaking down the complex synthesis into manageable steps, each optimizing for the introduction of specific functional groups that ultimately achieve improved biodegradability and toxicity profiles.
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 new compounds exhibit enhanced biodegradability and toxicity profiles, making them suitable as surfactants with improved environmental performance.
Implementation Method 1
a) decarboxylative cross-ketonization between an aryl carboxylic acid and an aliphatic carboxylic acid
Implementation Method 2
b) hydrogenation of the aryl aliphatic ketone
Implementation Method 3
c) sulfatation of the aryl alkyl alcohol
Implementation Method 4
b) sulfonation of the aryl aliphatic ketone
Data Source
AI summary
The present invention relates to sulfonated and sulfated compounds obtainable from aryl aliphatic ketones, a process to produce such compounds and the use of these compounds as surfactants, alone or in admixture with other surfactants.