Hydrolytically stable pentaerythritol diphosphites

Details Hydrolytically stable pentaerythritol diphosphites Hydrolytically stable pentaerythritol diphosphites

1994-04-25

1995-08-01

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

558 78, C07F 96578, C08K 5527

Patent

active

054380863

ABSTRACT:
A class of hydrolytically stable bis(aralkylphenyl)pentaerythritol diphosphites is disclosed, which is suitable as an antioxidant additives in polyolefins, particularly, in polypropylene. The diphosphites are of low volatility, have a high thermal decomposition temperature and resist yellowing when blended into a polyolefin base. A preferred diphosphite is bis(2,4-dicumylphenyl)pentaerythritol diphosphite.

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