Polymerizable diketopyrrolopyrroles and polymers prepared therewith
US5750723A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1997 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Jan 29, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/109
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
1,4-diketopyrrolopyrroles of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are hydrogen, C.sub.12 -C.sub.24 alkyl, C.sub.6 -C.sub.24 alkyl which is interrupted one or more times by O or S, or are a group of the formula ##STR2## in which R.sub.5 is C.sub.4 -C.sub.18 alkyl or C.sub.5 -C.sub.10 cycloalkyl, PA1 R.sub.3 is a polymerizable reactive group, PA1 R.sub.4, if R.sub.1 and R.sub.2 are hydrogen, is C.sub.6 -C.sub.24 alkyl which is attached directly or by way of O or S to the benzene ring and is uninterrupted or is interrupted one or more times by O or S, and PA1 R.sub.4, if R.sub.1 and/or R.sub.2 are C.sub.12 -C.sub.24 alkyl, is C.sub.6 -C.sub.24 alkyl which is interrupted one or more times by O or S or is a group ##STR3## hydrogen, halogen, methyl, methoxy, CN or phenyl, or is the same as R.sub.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.