Controllably degradable polymer compositions

Details Controllably degradable polymer compositions Controllably degradable polymer compositions

1983-06-13

1984-07-24

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C08K 547, C08K 543, C08K 539, C08K 534

Patent

active

044618530

ABSTRACT:
The invention relates to controllably degradable polymer compositions, especially suitable for making film products, comprising a vinyl polymer, and at least one first complex which is a non-ionic organosoluble antioxidant complex of a chain-breaking, peroxide-decomposing, metal ion deactivating or ultraviolet light stabilizing compound and of a metal such that the metal complex is a photoactivator and at least one second complex which is a non-ionic organosoluble ultraviolet light stabilizing complex of a metal such that the metal complex is a photostabilizer, the concentrations of the two complexes being co-ordinated to produce a desired embrittlement time for the composition.
The first complex is an iron complex and the second a nickel complex or a cobalt complex.

REFERENCES:
patent: 4101720 (1978-07-01), Taylor et al.
patent: 4121025 (1978-10-01), Scott
Hawkins et al., "Degradation and Stabilization"-Crystalline Olefin Polymers, Part II, vol. XX in High Polymers Series, editors: Raff and Doak, p. 382 (1964).
J. C. Cowan et al., "Flavor Reversion and Related Forms of Oxidative Deterioration" Autoxidation and Antioxidants-vol. II, Lundberg (1962) pp. 608-614.
Gerald Scott "Delayed Action Photo-Activator for the Degradation of Packaging Polymers"-Polymer Science and Technology-vol. 3, Polymers and Ecological Problems-James Guillet (Editor) 1973, 27-44.

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