Laundry detergent formulation with biodegradable antiredeposition agent

US12351778B2 · kind B2 · utility

Assignees

• DOW GLOBAL TECHNOLOGIES LLC · US
• Rohm and Haas Company · US
• Dow Silicones Corporation · US

Inventors

• Scott Backer · Phoenixville, US
• Randara Pulukkody · Lansdale, US
• John B. Case, Jr. · Perkasie, US
• Saugata Nad · Brussels, BE
• Sangeeta Sanjeev Patel · Mumbai, IN

Key dates

• Filing date: Jun 18, 2021
• Grant date: Jul 8, 2025
• Expiry date: Apr 22, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A laundry detergent formulation is provided including a detergent surfactant; a builder; a filler and an antiredeposition agent, including: 10 to 65 wt % of structural units of formula I where each R1 and R2 is independently selected from a hydrogen and a C1-3 alkyl group; 10 to 80 wt % of structural units of formula II wherein where each R3 is independently selected from a hydrogen and a-C (O) CH3 group; and 10 to 65 wt % of structural units of formula III where each R4 is independently selected from a hydrogen and a —CH3 group; and where at least one of R1 and R2 is a C1-3 alkyl group in at least 1 mol % of the structural units of formula I in the antiredeposition agent; where the antiredeposition agent has a lactone end group and where the antiredeposition agent has a weight average molecular weight of 1,500 to 6,000 Daltons.