Secondary Alkane Sulfonate Surfactant Composition for Detergents
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Solution Overview
Problem
Current detergent compositions using sodium laureth sulfate surfactants face environmental concerns due to palm kernel oil dependence, and there is a need for surfactant systems with enhanced performance and weight efficiency.
Innovation Solution
A detergent composition utilizing secondary alkane sulfonate (SAS) surfactants with linear alkyl chains of 15 to 18 carbon atoms, optimized to have at least 70% of the surfactant with C15-C18 chains and minimal C14 or lower chains, combined with additional anionic and non-ionic surfactants, enzymes, and cleaning boosters for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sodium laureth sulfate surfactant is used, then cleaning performance is achieved, but environmental concerns arise due to palm kernel oil dependence
Solution Approach 1:
The patent changes the carbon chain length parameter of the surfactant from conventional C12-C14 to C15-C18, and switches from sulfate to sulfonate chemistry. This parameter change enables the use of alternative feedstocks (coconut oil, palm oil, animal fats) that are more environmentally acceptable while maintaining cleaning performance through optimized chain length and molecular structure
Solution Approach 2:
The patent adopts secondary alkane sulfonates that can be produced from renewable and waste feedstocks, replacing surfactants dependent on specific geographic regions for palm kernel oil. This provides a more sustainable, universally available alternative that reduces environmental harm
2Reliability
If conventional SAS surfactant mixture is used, then surfactant function is provided, but weight efficiency is reduced due to presence of C14 and lower chains
Solution Approach 1:
The patent applies local quality by specifying different carbon chain length distributions in different portions of the surfactant mixture. The majority portion (70-99.9% wt) consists of C15-C18 chains for optimal performance and weight efficiency, while a minimal portion (1-30% wt) contains C14 and lower chains, creating a non-uniform but optimized composition that maximizes effectiveness per unit weight
Solution Approach 2:
The patent changes the distribution parameter of carbon chain lengths in the SAS surfactant mixture, shifting from conventional mixtures containing significant C14 and lower chains to an optimized mixture where C15-C18 chains dominate (70-99.9% wt). This parameter change improves weight efficiency while maintaining surfactant function through the presence of shorter chains
Data Source
AI summary
The invention relates to a secondary alkane sulfonate surfactant, wherein at least 70 wt.% of the secondary alkane sulfonate is a secondary alkane sulfonate (SAS) surfactant having linear alkyl chains of from 15 to 18 carbon atoms; wherein less than 30% of the secondary alkane sulfonate (SAS) surfactant has linear alkyl chains of 14 carbon atoms or lower; the invention also concerns a detergent composition comprising the secondary alkane sulfonate surfactant; the invention also concerns a method, preferably a domestic method of treating a textile.