Dioxaphosphorinane compounds and polyolefin compositions sabiliz

Details Dioxaphosphorinane compounds and polyolefin compositions sabiliz Dioxaphosphorinane compounds and polyolefin compositions sabiliz

1989-02-06

1989-11-21

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

558 85, C08K 549

Patent

active

048823740

ABSTRACT:
Disclosed are novel cyclic phosphite compounds having the formula ##STR1## wherein R.sup.1 is hydrogen, alkyl or aralkyl; R.sup.2 is hydrogen or alkyl; R.sup.3 is alkyl or aryl; and R.sup.4 and R.sup.5 each is alkyl. Also disclosed are polyolefin compositions stabilized with one or more of the above compounds.

REFERENCES:
patent: 3441633 (1969-04-01), Friedman
patent: 3467733 (1969-09-01), Dever et al.
patent: 3592858 (1971-07-01), Brimer
patent: 3714302 (1973-01-01), Dever et al.
C.A. 70:4150s, French Patent 1,501,427 (abstract).

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