Method of modifying the dye affinity of cellulose fiber-containing structure with benzene sulfonyl chloride
US4392265A · kind A · utility
3Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1981 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Nov 12, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/918
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The method involves treating a cellulose fiber-containing structure with an alkaline agent, coating the structure with an acid chloride having the following formula: ##STR1## (wherein X is --H, --NO.sub.2, --CH.sub.3 or --SO.sub.2 Cl) and subjecting the resultant structure to heat treatment to cause chemical modification. The acid chloride is employed in the form of an emulsion in water. The emulsion may also contain a thickener such as a natural sizing agent or a dye. The method provides a more dyeable cellulose fiber-containing structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.