Oxidative afterwash treatment for crease resisting fabrics
US4447241A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1982 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Apr 12, 2002 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M15/423
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The level of released formaldehyde in a durable press treated fabric is significantly reduced or eliminated altogether by an oxidative aftertreatment process in which the fabric, after treatment with a formaldehyde-based durable press finishing agent and curing to impart durable press properties, is contacted with an oxidizing agent to destroy formaldehyde-releasing moieties present in the fabric. Preferably, the treatment of the durable press fabric with the oxidizing agent is carried out by impregnating the fabric with a solution containing the oxidizing agent and then providing the fabric a residence time in contact with the oxidizing agent to allow for reaction of the oxidizing agent with the formaldehyde-releasing moieties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.