Aqueous finishing agent and process for a soft hand, water and oil repellent treatment for fibrous materials: perfluoro-aliphatic agent, polyethylene and modified hydrogen-alkyl-polysiloxane

US5047065A · kind A · utility

Assignee

• Minnesota Mining and Manufacturing Company · US

Inventors

• Hans-Burkhardt Vogel · Simmerath, DE
• Franz Mosch · Gessertshausen, DE
• Erich Rossler · Stadtbergen, DE
• Michael Bernheim · Arlesheim, CH
• Johan E. De Witte · Malle, BE
• Rudolf J. Dams · Ekeren, BE

Key dates

• Filing date: May 15, 1990
• Grant date: Sep 10, 1991
• Expiry date: May 15, 2010

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M15/277
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An aqueous finishing agent for providing fibrous materials with a soft water and oil repellent treatment is provided. The finishing agent comprises PA1 A) 25 to 65% by weight of a perfluoroaliphatic group-bearing water/oil-repellent agent (at least 5% by weight fluorine) in dispersion, PA1 B) 10 to 35% by weight of a dispersion of an emulsifiable polyethylene (density at 20.degree. C. at least 0.92 g/cm.sup.3, acid number at least 5) and PA1 C) 25 to 40% by weight of a fluorine-free dispersion of a soft-hand extender based on a modified hydrogen alkyl polysiloxane. A process for providing fibrous materials with a soft water and oil repellent treatment is also provided. The finishing agent provides fibrous material with excellent properties which are resistant to washing and dry cleaning and a particularly smooth, soft hand.