Polycyclic dyes
US5281241A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Dec 4, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0041
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polycylic dye of the Formula (1): ##STR1## wherein: R.sup.1 is --OSO.sub.2 R in which R is optionally substituted alkyl, alkoxy, aryl, alkoxyaryl, cycloalkyl or heteroaryl; PA1 Ring A is unsubstituted or is substituted by from one to three groups; and PA1 Ring B is unsubstituted or is substituted by one or two groups in addition to the group R.sup.1. Dyes of the present invention are useful for the coloration of textile materials particularly synthetic textile materials such as polyester, dye mixtures comprising a polycyclic dye of Formula (1) and a different polycyclic dye or an azo dye show improved build-up on polyester material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.