Patent No. EP4479506 (titled "A Concentrated Liquid Composition Premix") was filed by Unilever on Feb 6, 2023. The application was issued on Jan 21, 2026.
A concentrated liquid composition premix for forming a liquid detergent upon dilution in water comprises: (a) 30 to 90% wt. surfactant; (b) an alkoxylated polyol polyester containing at least three alkoxylates and at least two C8 to C40 fatty acid esters; and (c) a C4 to C18 fatty alcohol. The premix is designed for "do-it-yourself" (DIY) dilution, typically at a weight ratio of 1:1 to 1:20 (preferably 1:5) with water, to produce a stable liquid detergent with viscosity comparable to conventional market products. The composition may further include non-aqueous solvents, enzymes, cosurfactants, anti-foam agents, and soil release polymers. The premix may be provided as a unit dose product within a water-soluble pouch.

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