Composition
Patent No. EP4532649 (titled "Composition") was filed by Unilever on May 9, 2023. The application was issued on Nov 26, 2025.
Patent Summary
The composition comprises an anionically modified alkyl and/or alkenyl phenol polyoxyalkylene ether of formula (I) and a phosphate sequestrant. In formula (I), R1 is a linear or branched alkyl/alkenyl group (C11–C21); each R2 is an oxyalkylene group (C2–C4); m is an integer from 1 to 50; E is an anionic group selected from sulfate, phosphate, carboxylate, sulfonate, sulfosuccinate, sulfoacetate, sarcosinate, or phosphonate; and M is a solubilizing cation (sodium, potassium, ammonium, mono-, di-, or tri-alkanolamine, or mixtures). The phosphate sequestrant is selected from HEDP, DTPMP, HDTMP, ATMP, EDTMP, TDTMP, PBTC, or mixtures thereof, with DTPMP being particularly preferred. The composition, suitable for liquid detergents, provides improved storage stability and prevents metal-catalyzed oxidative degradation (yellowing).
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Date
Description
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EP4532649
- Application Number
- EP23725670A
- Filing Date
- May 9, 2023
- Status
- Granted And Under Opposition
- Oct 24, 2025
- Publication Date
- Nov 26, 2025
- External Links
- Slate, Register , Google Patents