Oligomeric aliphatic HALS phosphites and HALS phosphonites as st

Details Oligomeric aliphatic HALS phosphites and HALS phosphonites as st Oligomeric aliphatic HALS phosphites and HALS phosphonites as st

1995-04-05

1997-08-05

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 25, 524102, 528400, C07D21146

Patent

active

056544308

ABSTRACT:
The invention relates to novel oligomeric compounds of the formula I ##STR1## in which L is a group of the formula ##STR2## where the oxygen in the group L is in each case bonded to the phosphorus in the recurring structural units and the radical R.sub.2 or the carbon in the 4-position of the piperidinyl ring in the group L is in each case bonded to the oxygen in the recurring structural units; and the general symbols are as defined in claim 1, as stabilizers for organic materials against oxidative, thermal or light-induced degradation.

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