Dianthraquinonyl compounds
US5238984A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Jun 11, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B1/005
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Dianthraquinonyl compounds of formula ##STR1## wherein X is a radical R.sub.1, R.sub.2, R.sub.3 or R.sub.4, and PA0 R.sub.1 is alkyl or alkenyl of not less than 8 carbon atoms, PA0 R.sub.2 is --OR.sub.1 or --SR.sub.1, PA0 R.sub.3 is --NHR.sub.1 or --N(R.sub.1).sub.2, and PA0 R.sub.4 is a group of formula ##STR2## wherein R.sub.5 is --NHR.sub.1, --N(R.sub.1).sub.2, --OR.sub.1 or --SR.sub.1 and n is 0, 1 or 2, and PA0 R.sub.6 and R.sub.7 are each independently of the other hydrogen, halogen, nitro, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy. These dianthraquinonyl compounds are preeminently suitable for the mass coloration of plastics materials, especially of polyolefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.