Process for spin dyeing polymers or copolymers of acrylonitrile with quaternized heterocyclic diazo dye and tetrafluoro-borate anion
US4382801A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1981 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Dec 14, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/927
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for spin dyeing polymers of acrylonitrile or copolymers containing predominantly acrylonitrile, which process comprises adding to the spinning solution a monocationic dye salt of the formula ##STR1## wherein D is the group of atoms necessary to close a 5-membered heterocyclic ring containing two N-atoms, or to close a 6-membered heterocyclic ring, which rings may optionally contain fused benzene rings, or is the group of atoms necessary to close a benzthiazole ring, and Q is the radical of a carbocyclic or heterocyclic aromatic coupling component, and R.sub.1 is alkyl, aralkyl or aryl. The yellowish-red transparent fibres obtained have excellent fastness properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.