Anti-greying effect in combinations of biosurfactant with cationic and non-ionic surfactant

A surfactant mixture of rhamnolipid, cationic, and non-ionic surfactants addresses the issue of textile graying in detergents, enhancing cleaning performance without additional inhibitors.

DE102024212104A1Pending Publication Date: 2026-06-18HENKEL KGAA
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Patent Information

Application Number
DE102024212104
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Biosurfactants like rhamnolipids cause textile graying during washing, limiting their use in detergents, and cationic surfactants adhere to textile surfaces with dirt particles, forming complexes that prevent their desired effects.

Method used

A surfactant mixture comprising rhamnolipid, cationic, and non-ionic surfactants is developed, which reduces graying without forming insoluble precipitates.

Benefits of technology

The surfactant mixture effectively reduces laundry graying while maintaining cleaning performance, eliminating the need for polymeric graying inhibitors or optical brighteners.

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Abstract

A surfactant mixture consisting of at least one rhamnolipid and at least one cationic surfactant and at least one non-ionic surfactant, as well as a detergent containing this surfactant mixture, can be used to reduce the greying of textiles washed with it.
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Citation Information

Patent Citations

  • A kind of composite enzyme detergent and its preparation method and application

    CN103773623B

  • Biosurfactants with surface-active countercations

    DE102023205204A1

  • CN000103773623B