Method for improving the fastness of dyeings with basic dyes on cellulosic substrates
US4439208A · kind A · utility
13Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1982 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Jun 22, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/918
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The fastness properties of basic dyeings on cellulosic substrates are improved by treating the substrate with a fixing agent comprising a precondensate or mixture of PA1 (A) the reaction product of an amine with cyanamide, dicyandiamide, guanidine or biguanidine, or, PA1 (B) a quaternary polyalkylene polyamine with PA1 (C) formaldehyde and/or, PA1 (D) an N-methylol compound optionally together with PA1 (E) a catalyst, e.g. MgCl.sub.2. The fixing agents are normally applied as an aftertreatment, with a subsequent heat-curing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.