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US 7,888,414 B2Granted
Liquid phosphite blends as stabilizers
AssigneeChemtura Corporation
InventorsMichael E. Gelbin, Maurice Power, Jonathan S. Hill
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Abstract
A composition is disclosed that comprises a blend of at least two different phosphites of the structure wherein R1, R2, and R3 are independently selected alkylated aryl groups and wherein said blend is a liquid at ambient conditions. The compositions are useful for stabilizing thermoplastic resins and elastomers.
Claims18
A composition comprising a phosphite blend, said phosphite blend consisting of at least two different phosphites of the structure
- wherein R1, R2, and R3 are independently selected alkylated aryl groups of the structure
- wherein R4, R5, and R6 are independently selected from the group consisting of hydrogen and C1-C6 alkyl, and at least one of R4, R5, and R6 in each phosphite is selected from the group consisting of tert-butyl and tert-pentyl,
- which blend of phosphites is prepared by reacting a phosphorous trihalide with a mixture of phenols said mixture of phenols comprising a p-alkylated phenol and an o,p-dialkylated phenol
- and
- wherein said phosphite blend is a liquid at room temperature and atmospheric pressure.
2 more elements
Dependencies are inferred from the claim text.