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US 11,767,338 B2Granted
3-phenyl-benzofuran-2-one diphosphate derivatives as stabilizers
AssigneeBASF SE
InventorsWerner Hoelzl, Roswell E. King, III, Jean-Roch Pauquet
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Abstract
The invention relates to a composition comprising an organic material susceptible to oxidative, thermal or light-induced degradation and a compound of formula I-P, I-O or I-M. Further embodiments are a compound of formula I-P, I-O or I-M, a process for protection of the organic material by the compound, the use of the compound against degradation of the organic material, an additive composition comprising the compound, processes for manufacturing the compound and an intermediate involved therein.
Claims14
A composition, comprising:
- a) an organic material susceptible to oxidative, thermal or light-induced degradation, and
- b) a compound of formula I-P, I-O or I-M
- wherein
- RIP represents one of the subformulae II-P, II-O or II-M
- R1O represents one of the subformulae II-0 or II-M, or
- RIM represents the subformula II-M;
- R4, R5, R6 and R7 are independently from each other hydrogen or C1-C8-alkyl,
- RP2, RP3, RP5 and RP6 are independently from each other hydrogen or C1-C8-alkyl,
- RO1, RO2, RO5 and RO6 are independently from each other hydrogen or C1-C8-alkyl, and
- RM1, RM3, RM5 and RM6 are independently from each other hydrogen or C1-C8-alkyl,
- wherein the composition has a change in yellowness index of 5.0 to 19.7 when pellets of the composition are passed five times through a single screw extruder under air at 240° C.
8 more elements
Dependencies are inferred from the claim text.