Bisazo, bisazomethine and azo-azomethine compounds derived from 1,4-phenylenediamine sulfonic acid salts
US5395926A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Sep 22, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of formula ##STR1## wherein R is hydrogen or a group ##STR2## M.sub.1 and M.sub.2 are each independently of the other an alkali metal or alkaline earth metal or aluminum or a group of formula ##STR3## wherein n is 1, 2 or 3, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen or C.sub.1 -C.sub.8 alkyl, PA1 X.sub.1 and X.sub.2 are each independently of the other --N.dbd. or --CH.dbd., PA1 Q.sub.1 and Q.sub.2 are each independently of the other radicals of formula ##STR4## These compounds have excellent suitability for pigmenting organic material of high molecular weight, preferably polyolefins, and have superior lightfastness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.