Hindered phenyl phosphites
US4180498A · kind A · utility
17Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | May 8, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/527
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are independently lower alkyl or hydrogen, provided that only one of R.sub.1 and R.sub.2 is hydrogen, PA1 R.sub.3 is --(A).sub.g --COOR.sub.4 or CN where PA1 A is alkylene of 1 to 6 carbon atoms, PA1 R.sub.4 is alkyl of 1 to 24 carbon atoms, phenyl or alkyl substituted phenyl, and PA1 q is 0 or 1 are suitable for stabilizing organic material against thermal, oxidative and ultraviolet light degradation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.