Fluid cleaning composition, liquid detergent composition for laundry, and use of a combination of surfactants.

BR112020023083B1Active Publication Date: 2026-07-28UNILEVER NV
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Patent Information

Application Number
BR112020023083
Authority / Receiving Office
BR · BR
Patent Type
Patents
Current Assignee / Owner
Priority Date
2018-05-17
Filing Date
2019-05-10
Publication Date
2026-07-28
Estimated Expiration
2039-05-10

AI Technical Summary

Technical Problem

Existing fluid cleaning compositions, particularly liquid laundry detergents, face a challenge in maintaining viscosity due to the inclusion of cleaning polymers like alkoxylated polyamines and polyester-based dirt-release polymers, which reduce the composition's rheology, leading to consumer perception of inadequate cleaning efficacy.

Method used

Incorporating a rhamnolipid biosurfactant with a betaine surfactant at a pH of 3 to 6, along with a surfactant system comprising anionic and non-ionic surfactants, to enhance viscosity without the need for additional thickening polymers.

Benefits of technology

The combination achieves improved rheology and viscosity, addressing consumer concerns about the composition's cleaning effectiveness.

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Abstract

The invention provides a fluid cleaning composition comprising a) 5 to 70% by weight of a surfactant system comprising: (i) at least one anionic and / or non-ionic surfactant; and (ii) a rhamnolipid biosurfactant that is present at a level in the range of 1 to 95% by weight of the total surfactant in said surfactant system; and (iii) 0.5 to 10% by weight of a zwitterionic surfactant; and (b) water; and (c) 0.1 to 15% by weight of a polymer selected from the group consisting of: an alkoxylated polyamine, a polyester dirt-releasing polymer and mixtures thereof; wherein the composition has a pH of 3 to 6. The invention further provides the use of a surfactant combination comprising a rhamnolipid biosurfactant and a zwitterionic surfactant to increase the viscosity of a fluid cleaning composition at a pH of 3 to 6.
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