Poly-1,3,2-oxazaphospholidine stabilizers

Details Poly-1,3,2-oxazaphospholidine stabilizers Poly-1,3,2-oxazaphospholidine stabilizers

1990-08-23

1991-12-24

Lee, Mary C.

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

Organic compounds

Phosphorus esters

C07F 96584

Patent

active

050754815

ABSTRACT:
Compounds of formula I ##STR1## wherein n is 2-4, R.sub.1 is alkyl, cycloalkyl, phenylalkyl, phenyl or a radical of formula II ##STR2## R.sub.2, R.sub.3 and R.sub.4 are independently hydrogen, alkyl, cycloalkyl, phenylalkyl or aryl, or R.sub.3 and R.sub.4 together are alkylene, R.sub.5 and R.sub.6 are independently hydrogen, alkyl, cycloalkyl or phenylalkyl, R.sub.7 is hydrogen, alkyl or a group of the formula --(CH.sub.2).sub.k COOR.sub.8, where k is 0-2 and R.sub.8 is hydrogen or alkyl, and T is an n-valent hydrocarbon radical which may be interrupted by heteroatoms, are useful stabilizers for substrates subject to the deleterious effects of oxygen, heat and/or actinic radiation.

REFERENCES:
patent: 4751319 (1988-06-01), Odorisio et al.
patent: 4812501 (1989-03-01), Odorisio et al.
patent: 4831178 (1989-05-01), Odorisio et al.
Pastor et al, "J. Am. Chem. Soc.," vol. 119, (1988) 6547-6555.

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