Degradable plastics containing dual-function additive system
AssigneeOwens-Illinois, Inc.
InventorsLynn J. Taylor, John W. Tobias
Life of this patent
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Abstract
There is disclosed a photoresistive plastic composition degradable by ultraviolet radiation, the composition comprising an organic polymeric material having dispersed therein a degradation controlling amount of an additive system consisting essentially of at least one organic photosensitizer and at least one organic derivative of a transition metal.
Claims8
As a composition of matter, an organic polymeric material containing a degradation-controlling amount of an additive system consisting essentially of at least one organic photosensitizer selected from the group consisting of anthraquinone, 1-aminoanthraquinone, 2-aminoanthraquinone, 1-chloroanthraquinone, 2-chloroanthraquinone, 1-methyl anthraquinone, 2-methyl anthraquinone, 2-ethyl anthraquinone, 2-tert-butyl anthraquinone, 1-nitroanthraquinone, 2-phenylanthraquinone, 1,2-naphthoquinone, 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone, 1,2-benzanthraquinone, 2,3-benzanthraquinone and phenanthrenequinone and at least one transition metal dialkyldithiocarbamate.
A process for preparing a degradable polymeric composition which comprises incorporating into a polymeric material a degradation-controlling amount of an additive system consisting essentially of at least one organic photosensitizer selected from the group consisting of anthraquinone, 1-aminoanthraquinone, 2-aminoanthraquinone, 1-chloroanthraquinone, 2-chloroanthraquinone, 1-methyl anthraquinone, 2-methyl anthraquinone, 2-ethyl anthraquinone, 2-tert-butyl anthraquinone, 1-nitroanthraquinone, 2-phenylanthraquinone, 1,2-naphthoquinone, 1,4-naphthoquinone, 2-methyl-1,4-naphthoquinone, 1,2-benzanthraquinone, 2,3-benzanthraquinone and phenanthrenequinone and at least one transition metal dialkyldithiocarbamate.
Dependencies are inferred from the claim text.