Process for the preparation of discharge effects on dyeings or prints made with disperse dyes on flat-surface textile structures of synthetic fibers

US3972677A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Erich Feess · Hofheim, DE
• Heinz Dethloff

Key dates

• Filing date: Mar 21, 1974
• Grant date: Aug 3, 1976
• Expiry date: Mar 21, 1994

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/922
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Process for the preparation of discharge effects under or on dyeings or prints with disperse dyes on flat-surface textile structures made of synthetic fibers, which process comprises applying to the textile material a dyeing by padding, slop-padding or printing dischargeable disperse dyes and drying at mild temperatures, printing on the dyeing which has not yet been fixed a discharge paste containing discharge-resistent disperse dyes and fixing that paste after intermediate drying either by a steaming process in saturated steam followed by a treatment with dry heat or a treatment with over-heated steam, or by steaming in pressurized steam.