Agricultural process using controllably degradable polymer compo

Details Agricultural process using controllably degradable polymer compo Agricultural process using controllably degradable polymer compo

1984-03-26

1985-05-28

Bagwill, Robert E.

Plant husbandry

Mulching

A01G 100, C08K 547

Patent

active

045191611

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.

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patent: 3592792 (1971-07-01), Newland et al.
patent: 3795654 (1974-03-01), Kirkpatrick
patent: 3867324 (1975-02-01), Clendinning et al.
patent: 3984940 (1976-10-01), Reich et al.
patent: 3991138 (1976-11-01), Tanaka et al.
patent: 4101720 (1978-07-01), Taylor et al.
patent: 4121025 (1978-10-01), Scott

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