Synthesis of environmentally degradable alkyl polyesters
AssigneeAkina, Inc.
InventorsKinam Park, John Solomon Garner
Life of this patent
Estimating the term…
Abstract
A solid crosslinked polyester composition that is environmentally degradable in less than about 180 days. The crosslinked polyester can be the polyesterification reaction product between one or more multi-hydroxylic alcohols, one or more hydroxy acids, and one or more multi-carboxylic acid compounds. Alternately, the crosslinked polyester can be the polyesterification reaction product of one or more multi-hydroxylic alcohols, one or more hydroxy acids, one or more multi-carboxylic acid compounds, and a cyclic ester. Provided, however that if the one or more hydroxy acids has only one carboxyl group, it has two or more hydroxyl groups, and if the one or more hydroxy acids has only one hydroxyl group, it has two or more carboxyl groups.
Claims15
A composition comprising a solid crosslinked polyester having a crosslinked matrix, wherein the crosslinked polyester is environmentally degradable in less than about 180 days;
- wherein the crosslinked matrix of the crosslinked polyester is formed by a self-catalyzed self-esterification reaction of a reactant mixture of one or more multi-hydroxylic alcohols, one or more hydroxy acids, one or more multi-carboxylic acid compounds, and optionally a cyclic ester;
- wherein the one or more multi-hydroxylic alcohols have more than two hydroxyl groups per molecule;
- wherein the one or more hydroxy acids has one or more hydroxy groups and one or more carboxylic acid groups per molecule:
- with the proviso that if the one or more hydroxy acids has only one carboxyl group, it has two or more hydroxyl groups and if the one or more hydroxy acids has only one hydroxyl group it has two or more carboxyl groups;
- and
- wherein the one or more multi-carboxylic acid compounds have more than two carboxylic acid groups per molecule.
Dependencies are inferred from the claim text.