Alkylated 1,1'-biphenyl-2,2'-diyl phosphonites and stabilized compositions
US4143028A · kind A · utility
17Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Dec 5, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/5393
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Alkylated 1,1'-biphenyl-2,2'-diyl phosphonites are prepared by reacting alkylated 2,2'-dihydroxybiphenylene with dichloroaryl or dichloroalkyl phosphine in an organic solvent. Said phosphonites are useful as stabilizers of organic polymers and lubricating oils, especially as process stabilizers for polyolefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.