Granular Detergent Composition Removing Thiosulphate to Stop MES Malodour
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Solution Overview
Problem
Granular detergent compositions containing methyl ester fatty acid sulphonate (MES) experience malodour issues during storage, particularly due to the interaction between enzymes and sodium methylsulphate, which is exacerbated by the presence of thiosulphate in enzyme granules.
Innovation Solution
A granular detergent composition comprising 1 to 30% by weight of an alkyl ester fatty acid sulphonate surfactant and 0.1 to 10% by weight of enzyme granules, with the composition being substantially free of thiosulphate, thereby preventing malodour formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thiosulphate is present in enzyme granules, then enzyme activity is maintained, but malodour develops during storage due to interaction with MES and sodium methylsulphate
Solution Approach 1:
The harmful thiosulphate component is extracted and removed from the enzyme granules through a modified purification process, eliminating the source of malodour while preserving the essential enzyme activity through careful control of the purification conditions
Solution Approach 2:
The purification parameters of the enzyme granules are changed by controlling pH, temperature, and processing conditions to remove thiosulphate while maintaining enzyme stability and activity, thereby resolving the contradiction between enzyme reliability and malodour prevention
2Reliability
If MES is used as surfactant, then biodegradability and calcium hardness tolerance are improved, but malodour problem occurs upon storage due to interaction with sodium methylsulphate
Solution Approach 1:
The harmful interaction between MES and thiosulphate-containing enzyme granules is eliminated by extracting and removing the thiosulphate component, thereby preserving the benefits of MES while preventing malodour formation during storage
Solution Approach 2:
A purified enzyme granule formulation without thiosulphate acts as an intermediary component that maintains enzyme functionality while eliminating the harmful chemical interaction with MES and sodium methylsulphate that causes malodour
Data Source
AI summary
Potential malodour problems are avoided by using a granular detergent composition comprising 1 to 30% by weight of an alkyl ester fatty acid sulphonate surfactant and enzyme granules, wherein said composition is substantially free of thiosulphate.