Institutional washing process using soil-release polymer

US6200351A · kind A · utility

Assignee

• Henkel Ecolab GmbH & Co. OHG · DE

Inventors

• Chris Schleinig · Goldkronach, DE
• Edgar Koeppelmann · Hilden, DE
• Thomas Merz · Hilden, DE

Key dates

• Filing date: May 13, 1999
• Grant date: Mar 13, 2001
• Expiry date: May 13, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/44
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An institutional textile washing process comprising a washing step preceded by a pretreatment step comprising a soaking step or a prewash step, wherein the textile is treated in the pretreatment step in the presence of water with a soil release polymer comprising a copolyester of a dicarboxylic acid and a diol or a polydiol.