Method to decrease the acetaldehyde content of melt-processed polyesters
AssigneeThe Coca-Cola Company
InventorsMark Rule, Yu Shi, Xiaoyan Huang
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Abstract
A method for decreasing acetaldehyde content of melt processed polyester comprising combining with melted polyester an organic additive compound which scavenges acetaldehyde from the polyester without imparting discoloration to the polyester. The organic additive compound comprises at least two hydrogen substituted heteroatoms bonded to carbons of the organic additive compound such that the organic additive compound is reactive with acetaldehyde in the polyester to form water and a resulting organic compound comprising an unbridged five or six member ring including the at least two heteroatoms. The reduced acetaldehyde content polyester is particularly useful for making containers such as for packaging beverages.
Claims20
A method for decreasing acetaldehyde content of melt-processed polyester comprising combining with polyester an organic additive compound comprising at least two hydrogen-substituted heteroatoms bonded to carbons of the organic additive compound, the organic additive compound being reactive with acetaldehyde in the polyester to form water and a resulting organic compound comprising an unbridged 5- or 6-member ring including the at least two heteroatoms.
A container made in accordance with a method comprising:
- combining with polyester an organic additive compound comprising at least awo hydrogen-substituted heteroatoms bonded to carbons of the organic additive compounds, the organic additive compound being reactive with acetaldehyde in the polyester to form water and a resulting organic compound comprising an unbridged 5- or 6-member ring including the at least two heteroatoms;
- and
- forming a container with the polyester.
A composition for use in making polyester items with decreased acetaldehyde content comprising polyester and an organic additive compound comprising at least two hydrogen-substituted heteroatoms bonded to carbons of the organic additive compound such that the organic additive compound is reactive with acetaldehyde in the polyester to form water and a resulting organic compound comprising an unbridged 5- or 6-member ring including the at least two heteroatoms.
Dependencies are inferred from the claim text.