Cationic dyes
US4251656A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1978 |
| Grant date | Feb 17, 1981 |
| Priority date | — |
| Expiry date | Jun 13, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B23/164
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There are described new cationic dyes of the formula ##STR1## wherein R 's independently of one another each represent a straight-chain or branched-chain alkyl group having 1 to 4 carbon atoms, PA1 X represents CH or N, PA1 R.sub.1 represents hydrogen in the case where X=CH, or represents a straight-chain or branched-chain alkyl group having 1 to 6 carbon atoms in the case where X=N, PA1 Z represents unsubstituted or substituted alkylene which has 2 to 4 carbon atoms and which can be interrupted by one or more hetero atoms, PA1 n represents 0 or 1, and PA1 T represents an anion, and the rings PA1 A and/or B can optionally contain further substituents, processes for producing these dyes, and their use for dyeing and printing materials dyeable with cationic dyes, for dope dyeing textile materials consisting of homo- or copolymers of acrylonitrile, and for dyeing wet tow, by which means are obtained yellow dyeings having good fastness properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.