Mixture of phosphanes and chromane derivatives

Details Mixture of phosphanes and chromane derivatives Mixture of phosphanes and chromane derivatives

2006-08-01

2006-08-01

Anthony, Joseph D. (Department: 1714)

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

C252S400200, C252S404000, C252S182290, C524S110000, C524S116000, C524S121000, C524S154000

Reexamination Certificate

active

07083743

ABSTRACT:
The invention relates to a synergistic mixture comprisinga) at least one compound from the group which consists of the phosphanes of the formula (I), (di/oligo)phosphanes of the formulae (II) and (III) and cyclophosphanes of the formula (IV)andb) at least one 6-hydroxychromane derivative of the general formula (V)and also to a process which stabilizes polymers with respect to thermooxidative degradation by addition and incorporation of this synergistic mixture.

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