Oligomeric HALS phosphites and HALS phosphonites as stabilisers

Details Oligomeric HALS phosphites and HALS phosphonites as stabilisers Oligomeric HALS phosphites and HALS phosphonites as stabilisers

1993-11-30

1995-04-11

Morgan, Kriellion S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524103, 524111, 25240024, 252403, 546 24, C08K 53435, C07F 906, C07C30300

Patent

active

054058910

ABSTRACT:
Novel oligomeric compounds of formula I ##STR1## wherein L is a group of formula ##STR2## wherein the oxygen atom in the group L is attached to the phosphorus atom in the structural repeating unit, and R.sub.5 or the carbon atom in 4-position of the piperidinyl ring in the group L is attached to the oxygen atom in the structural repeating unit, and the remaining symbols are as defined in claim 1, are disclosed as stabilizers for protecting organic material against oxidative, thermal or light-induced degradation.

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