Perinone dyestuffs for bulk dyeing of plastics
US5466805A · kind A · utility
6Cited by
0References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1994 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Dec 1, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/43
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
1,2-Naphthaloperinone dyestuffs of the formula (I) ##STR1## wherein Z denotes the radical for completion of a 1,2-naphthylene system and X, Y, n and m have the meaning given in the description, are prepared by condensation of substituted or unsubstituted naphthalene-1,2-dicarboxylic acids with substituted or unsubstituted naphthalene-1,8-diamines. The dyestuffs according to the invention have very good fastness properties and are employed in processes for bulk dyeing of plastics, preferably of vinyl polymers and polyesters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.