Amphiphilic star-like polyether

US10669380B2 · kind B2 · utility

Assignees

• BASF SE
• Henkel AG & Co. KGaA · DE

Inventors

• Holger Tuerk · Ludwigshafen, DE
• Eva-Maria Reis-Walther · Ludwigshafen, DE
• Sophie Maitro-Vogel · Mannheim, DE
• Anna Maria Mueller-Cristadoro · Ludwigshafen am Rhein, DE
• Catherine Breffa · Mülheim an der Ruhr, DE
• Alejandra Garcia Marcos · Ludwigshafen, DE
• Benedikt Crone · Mannheim, DE
• Mareile Job · Leverkusen, DE
• Birgit Gluesen · Goldkronach, DE
• Iwona Spill · Berlin, DE

Key dates

• Filing date: Jul 22, 2015
• Grant date: Jun 2, 2020
• Expiry date: Nov 16, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to amphiphilic star-like polyether. The core molecule is an aliphatic hyperbranched polyether polyol, which is further alkoxylated, first with ethylene oxide or combinations of ethylene oxide and C3-C20 alkylene oxide, preferably propylene oxide, and/or glycidol, and then with a C3-C20 alkylene oxide, preferably propylene oxide, or combination of ethylene oxide and propylene oxide, then optionally anionically modified. The resulting amphiphilic star-like polyether thus has an inner core based on an aliphatic hyperbranched polyether polyol, an inner shell predominantly containing polyethylene oxide units, the inner shell comprising at least 3 ethylene oxide units and an outer shell predominantly containing polypropylene oxide units, the outer shell comprising at least 3 propylene oxide units. They optionally contain anionic groups instead of hydroxyl groups on the periphery of the macromolecule. The invention further relates to their use as additive in laundry formulations and to their manufacturing process.