Piperidine derivatives
US4241208A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1978 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Dec 12, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3435
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Piperidine derivatives having the formula ##STR1## wherein R' represents an alkyl, an acyl, an alkoxycarbonyl, an amino or nitroso group; PA0 X represents oxygen or sulfur; PA0 Y represents oxygen, sulfur or a group of the formula .dbd.N--R" in which R" is hydrogen or alkyl; PA0 Z represents oxygen or a group of the formula >N--R'" in which R'" is hydrogen or alkyl; PA0 n is an integer of 1 to 4; and PA0 R represents, when n is 1, alkyl, aryl, cycloalkyl, alkoxycarbonyl, substituted phosphino or substituted phosphinyl, when n is 2, alkylene, alkenylene, arylene, aralkylene; alkylenediphenylene, bis-(alkoxycarbonyl) alkylene, alkylene-bis-(oxycarbonylalkyl), dialkylene ether or diphenylene ether, when n is 3, alkanetriyl,tris-(alkoxycarbonyl)alkanetriyl, alkanetriyl-tris-(oxycarbonylalkyl) or a group of the formula ##STR2## in which p is an integer of 1 through 8 inclusive, and, when n is 4, alkanetetrayl,tetrakis-(alkoxycarbonyl) alkanetetrayl or alkanetetrayl-tetrakis-(oxycarbonylalkyl). The piperidine derivatives (I) of this invention are prepared in various manners and useful as stabilizers for synthetic polymers against thermal- and photo-deterioration thereof. A typical exampl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.