Biodegradable corrosion inhibitor packages
AssigneeCortec Corporation
InventorsBoris A. Miksic, Robert A. Boyle
Life of this patent
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Abstract
Biodegradable resin products consisting essentially of a polymeric resin of starch, polyesters such as polylactic acid, or other suitable polyesters. In admixture with the resin is a particulate vapor phase corrosion inhibitor selected from amine salts, triazole derivatives, alkali dibasic acid salts, and mixtures thereof, and is present in an amount ranging from between about 1% and 3% by weight of the polymeric resin and which is shaped into formed articles.
Claims2
The process of preparing a biodegradable resin film or shaped article consisting essentially of a polymeric resinous film or shaped article selected from the group consisting of polyesters of polymers such as polylactic acid, polycaprolactone or other compatible polyesters, which comprises the steps of:
- (a) selecting a particulate vapor phase corrosion inhibitor from the group consisting of amine salts, triazole derivatives, alkali dibasic acid salts, alkali nitrites, and mixtures thereof;
- (b) preparing a blend of said particulate vapor phase corrosion inhibitor and said biodegradable resinous material wherein said vapor phase corrosion inhibitor comprises between 1% and 3% by weight of said polymeric resin;
- (c) extruding said blend into an oriented film having a thickness of between about 1 mil and 10 mils;
- and.
- (d) forming an air-entrained product from at least two of said oriented films by:
- (i) subjecting at least one of said films to an embossing operation to create a film structure with planar portions and self-supporting raised embossment portions;
- (ii) superimposing at least two of said oriented films to form a laminate pre-form;
- and
- (iii) fusing said planar portion to create raised cells with ambient air entrapped therewithin.
Dependencies are inferred from the claim text.