Metal-organic stabilizers and antistabilizers for polyolefin plastics

✍ Scribed by G. C. Newland; J. W. Tamblyn

• Publisher: John Wiley and Sons
• Year: 1965
• Tongue: English
• Weight: 407 KB
• Volume: 9
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1965.070090526

✦ Synopsis

During the past few years it has been reported that a number of metal-organic compounds show outstanding effectiveness as stabilizers against the oxidative deterioration of polyolefins and other polymers. This may seem surprising in view of the well known catalytic effect of such compounds on the oxidation of organic materials. Indeed, it has been observed that a given metal compound can act as a stabilizer in one system and as an antistabilizer in another. Even in a single system the compound may simultaneously retard one mode of oxidation and accelerate another. For example, the copper chelate of a,a'-(ethylenedinitrilo)-di-o-cresol retarded the formation of carbonyl groups and accelerated scission during the photooxidation of polyethylene. It is the purpose of this paper to consider a number of examples of this sort drawn from the field of metalerganic stabilizers.' Any comprehensive theory of oxidation and antioxidation should be able to encompass such curious anomalies.