Ester oligomers suitable as soil release agents in detergent compositions

US5691298A · kind A · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Eugene Paul Gosselink · Cincinnati, US
• James Albert Cleary · Indian Springs, US
• Robert Henry Rohrbaugh · Hamilton, US
• Margaret Robinson Tallmadge · Cincinnati, US
• Shulin Zhang · Sharonville, US

Key dates

• Filing date: Nov 22, 1995
• Grant date: Nov 25, 1997
• Expiry date: Nov 22, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3715
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Soil release agents which comprise: an ester backbone comprising (1) units selected from dihydroxy or polyhydroxy sulfonate (e.g., a sulfoethyl ether of glycerin), a unit which is at least trifunctional whereby ester linkages are formed resulting in a branched oligomer backbone (e.g., glycerol), or mixtures thereof, (2) terephthaloyl unit, and (3) oxyalkyleneoxy unit; and one or more capping units (preferably anionic).