Alkanolamine esters of 1,1'-biphenyl-2,2'-diyl-and alkylidene-1,1'-biphenyl-2,2'-diyl-cyclic phosphites
US4318845A · kind A · utility
58Cited by
4References
24Claims
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Assignee
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Key dates
| Filing date | Nov 24, 1980 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | Nov 24, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2223/042
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The title compounds are prepared by reacting alkylated 1,1'-biphenyl-2,2'-diol or alkylated 2,2'-alkylidene-bis-phenol with phosphorus trichloride in an organic solvent and then reacting the intermediate phosphorochlorodite with an alkanolamine. Said phosphites are useful as stabilizers of organic polymers and lubricating oils, especially as processing stabilizers for polyolefins, elastomers, polyesters and polycarbonates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.