Controllably and swiftly degradable polymer compositions and fil

Details Controllably and swiftly degradable polymer compositions and fil Controllably and swiftly degradable polymer compositions and fil

1989-08-04

1990-07-03

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 83, 524122, 524201, 524368, 523126, C08K 551

Patent

active

049391941

ABSTRACT:
Polymer compositions comprising a vinyl polymer and a combination of at least two metal complexes wherein the complexing agent of the first complex is attached to the metal through oxygen and the metal is a transition metal, and the complexing agent of the second complex is attached to the metal through sulphur and the metal is a transition metal or a metal of group II or IV of the periodic table of the elements, wherein the molar ratio of the second metal complex to the first metal complex is 0.5 or less. A film obtained from such polymer compositions and its use agricultural processes are also claimed.

REFERENCES:
patent: 4076689 (1978-02-01), Mills
patent: 4121025 (1978-10-01), Scott
patent: 4461853 (1984-07-01), Gilead et al.
patent: 4519161 (1985-05-01), Gilead et al.
Photo-Initialized Oxidation of Polyethylene Effect of Photo-Sensitizers, European Polymer Journal, vol. 10, pp. 1019-1028.

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