Sterically hindered phenyl bis(naphthyl)phosphites and compositions thereof
US4415686A · kind A · utility
4Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1982 |
| Grant date | Nov 15, 1983 |
| Priority date | — |
| Expiry date | Nov 24, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/526
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
2,6-Di-t-butyl-4-substituted phenyl bis(3,6-di-t-butyl-2-naphthyl)phosphites, readily prepared by reacting together a phosphorodichloridite of a 4-substituted-2,6-di-t-butylphenol and a sodium salt of 3,6-di-t-butyl-2-naphthol, to form antioxidant and ultraviolet stabilizers that form particularly effective combinations with hydroxyphenylalkyleneyl isocyanurates to provide enhanced oven aging properties to organic materials subject to attack by heat and oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.