Wettable polyester fibers and fabrics

US7829484B2 · kind B2 · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Ashutosh Sharma · Wappingers Falls, US
• Michael Tinkl · Weil am Rhein, DE
• Andrew J. Leggio · Franklin Square, US
• Matthew E. Gande · New Fairfield, US
• Armin Schneider · Glückstadt, DE

Key dates

• Filing date: Nov 10, 2006
• Grant date: Nov 9, 2010
• Expiry date: Sep 9, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/637
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present invention is aimed at a method of providing wettability to polyester fibers or filaments, to woven or nonwoven fabrics made therefrom and to resultant articles of manufacture. The method comprises melt extruding a mixture comprising a polyester and one or more alkyl metal sulfonates where the metal is Na, Li or K and the alkyl is straight or branched chain alkyl of 1 to 24 carbon atoms, or is straight or branched chain alkenyl of 2 to 24 carbon atoms. The alkyl metal sulfonates are present from about 0.1% to about 1.9% by weight based on the weight of the polyester. A post treatment step such as an alkaline treatment step is not included. The melt extrusion mixtures do not include certain additives such as polyoxyalkylene compounds, alkylmonoethonolamide compounds, alkyldiethanolamine compounds and polyetheramide compounds.