Renewable Surfactant Compounds for Low Irritancy and High Foaming
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Solution Overview
Problem
Current surfactant compounds often have high irritancy to skin and eyes, and there is a need for environmentally friendly surfactants derived from renewable sources that also provide high foaming capabilities.
Innovation Solution
Development of surfactant compounds with the formula (I), where R1 is a C5 to C39 alkyl or alkenyl group, and R2 includes a covalent bond and sulphate groups, derived from renewable sources like plant triglycerides, for use in personal care compositions to reduce irritancy and enhance foaming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional surfactant compounds are used, then cleaning effectiveness is achieved, but skin and eye irritancy increases
Solution Approach 1:
The patent modifies the chemical structure of surfactant compounds by introducing specific molecular configurations (formula I with defined R groups and stereochemistry) that change the physical-chemical parameters of the molecule. These structural parameter changes result in reduced skin and eye irritancy while preserving cleaning effectiveness, as the modified molecules interact more gently with biological tissues while maintaining surfactant functionality.
Solution Approach 2:
The invention employs composite molecular structures combining hydrophobic alkyl/alkenyl groups with hydrophilic polyoxyethylene chains and sulfate ester groups in a specific arrangement. This composite structure allows the surfactant to maintain effective cleaning properties through amphiphilic character while the specific composition and configuration reduce irritancy to skin and eyes.
2Reliability
If surfactants from petroleum sources are used, then performance is achieved, but environmental burden increases
Solution Approach 1:
The patent changes the source parameter of the surfactant from petroleum-derived to renewable plant-based sources (such as coconut oil, palm oil, or soybean oil). This parameter change in the raw material origin maintains the required surfactant performance while significantly reducing the environmental burden by using biodegradable, renewable resources that are more eco-friendly.
3Object-generated harmful factors
If renewable source surfactants are developed, then environmental friendliness is improved, but foaming capability may be reduced
Solution Approach 1:
The patent optimizes parameters including the chain length of the hydrophobic group (C8-C22), the degree of ethoxylation (average 2-20 moles of ethylene oxide), and the sulfate esterification degree. By carefully adjusting these parameters, the surfactant maintains high foaming capability comparable to conventional surfactants while being derived from renewable sources and environmentally friendly.
Solution Approach 2:
The invention introduces specific local structural features in the surfactant molecule, such as the sulfate ester group at a specific position on the polyoxyethylene chain and the particular arrangement of hydrophobic and hydrophilic regions. These local quality enhancements ensure that the renewable surfactant achieves optimal foaming performance in specific areas of the molecular structure while maintaining overall environmental compatibility.
Data Source
AI summary
A surfactant component comprising a compound of formula (I): (I) wherein R1 is a C5 to C39 alkyl or alkenyl group and R2 is a group of formula (a) wherein one of W, X, Y and Z is a covalent bond and the remaining groups are independently selected from H, M, SO3M and a further group of formula R1CO provided at least one of W, X, Y and Z is SO3M; and each M is independently a hydrogen ion, an ammonium ion or a metal ion.