Treatment of textile materials
US3957428A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1972 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Sep 20, 1992 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for uniformly and thoroughly bleaching textile material having contaminate in the fibers comprising: 1. IMPREGNATING THE CONTAMINATED TEXTILE MATERIAL WITH A SOLUTION OF A SURFACE-ACTIVE AGENT IN A HYDROCARBON OR HALOGENATED HYDROCARBON SOLVENT AND STEAMING THE IMPREGNATED TEXTILE MATERIAL TO REMOVE SOLVENT, WHEREBY SUBSTANTIALLY ALL OF THE CONTAMINATION IN THE FIBERS AND THE SURFACE-ACTIVE AGENT REMAIN IN THE TEXTILE MATERIAL; 2. IMPREGNATING THE TEXTILE MATERIAL WITH THE CONTAMINATION AND SURFACE-ACTIVE AGENT WITH AN AQUEOUS BLEACHING SOLUTION CONTAINING, AS A BLEACHING AGENT, HYDROGEN PEROXIDE; 3. STEAMING THE TEXTILE MATERIAL; AND 4. WASHING THE TEXTILE MATERIAL WITH AN AQUEOUS MEDIUM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.