Degradable plastic compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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524 52, 524398, C08K 320

Patent

active

049314882

ABSTRACT:
Composition based on thermoplastic polymers, especially .alpha.-olefine polymers, such as polyethylene or ethylene copolymers, to which have been added, to promote degradation, a biologically degradable substance, an iron compound possibly complex and soluble in the composition, an oxidizable substance having one or several double bonds, selected from fatty acids and/or fatty acid esters, as well a further possible compound of a transition metal with the exception of iron as a catalyst. Said compositions demonstrate a markedly improved degradation capability when exposed to heat and/or ultraviolet light and/or sunlight and/or when in conditions promoting decomposition.

REFERENCES:
patent: 3865767 (1975-02-01), Boberg
patent: 4016117 (1977-04-01), Griffin
patent: 4038228 (1977-07-01), Taylor
patent: 4067836 (1978-01-01), Potts et al.

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