Cationic reaction products of basic carbamides and epihalohydrins: quaternary ammonium salts as dyeing aids for cellulose
US5133779A · kind A · utility
4Cited by
7References
5Claims
0Family size
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Key dates
| Filing date | Oct 2, 1991 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Oct 2, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/918
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There are disclosed quaternary ammonium salts which are obtainable by reacting basic carbamides containing a quaternizable nitrogen atom with epihalohydrins. These quaternary ammonium salts are particularly suitable for enhancing the color yield and the wet fastness properties of dyeings or printings produced on cellulosic fibre materials with anionic dye, e.g. reactive or direct dyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.