Shrinkproofing of fabrics of wool

US4210415A · kind A · utility

Assignee

• The United States of America, as represented by the Secretary of Agriculture · US

Inventors

• Clay E. Pardo, Jr. · Albany, US
• Robert E. Foster · Mesilla Park, US
• Willie Fong, deceased · Richmond, US

Key dates

• Filing date: Apr 7, 1977
• Grant date: Jul 1, 1980
• Expiry date: Apr 7, 1997

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M2200/45
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Knitted fabrics are fulled and shrinkproofed by a process wherein a loosely-knitted fabric is exposed to a diisocyanate. The so-treated material is then fulled and treated with a polyamine, whereby a polyurea is formed on the surface of the fibers and the fabric thus becomes shrinkproofed.