Antioxidant aromatic tetraphosphites

Details Antioxidant aromatic tetraphosphites Antioxidant aromatic tetraphosphites

1986-07-22

1988-04-19

Sutto, Anton H.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

558156, C08K 552, C07F 9145

Patent

active

047390000

ABSTRACT:
An aromatic tetraphosphite suitable for use as an antioxidant for organic materials. The aromatic tetraphosphite has the formula: ##STR1## wherein R, R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen and straight chain, branched and cyclic alkyl groups having from 1 to about 18 carbon atoms with the provision that at least two of the R, R.sup.1 and R.sup.2 groups are alkyl groups.

REFERENCES:
patent: 2847443 (1958-08-01), Hechenbleikner et al.
patent: 3281381 (1966-10-01), Hechenbleikner et al.
patent: 4341721 (1982-07-01), Batorewicz

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