Acylated hindered hexahydropyrimidines and their use as light stabilizing agents
US4404302A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1982 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | May 27, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3462
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An acylated, hindered hexahydropyrimidine of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different independently of each other and are alkyl having 1 to 6 carbon atoms, when unsubstituted, or alkyl or aryl substituted; PA1 R.sub.5 and R.sub.6 may be the same or different and are hydrogen, or alkyl; PA1 R.sub.7 is selected from the group consisting of: alkyl having 1 to 20 carbon atoms, substituted alkyl where the alkyl without substitution has 1 to 20 carbon atoms and where substituents may be up to five lower alkyl groups, arylalkyl, cycloalkyl having 3 to 12 carbon atoms, aryl aryl substituted with 1 to 3 substituents seleted from the group consisting of: lower alkyl, lower alkoxy, and hydroxyl; ##STR2## wherein R.sub.9 is unsubstituted or substituted with alkyl, PA1 R.sub.10 is hydroxyl, lower alkoxy, phenoxy and the group ##STR3## and R.sub.8 is hydrogen, alkyl, substituted alkyl, arylalkyl, hydroxyl, oxyl and ##STR4## wherein R.sub.11 is unsubstituted or substituted alkyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.