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US 2013/0158196 A1Published application
Aliphatic-aromatic copolyetheresters
AssigneeE. I. Du Pont de Nemours and Company
InventorMark F. Teasley
Life of this patent
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Abstract
Provided are aliphatic-aromatic copolyetheresters that can exhibit biodegradation and improved physical properties. The copolyetheresters can be blended with other polymeric materials, and are useful for making a variety of shaped articles.
Claims20
An aliphatic-aromatic copolyetherester consisting essentially of:
- I. a dicarboxylic acid component consisting essentially of, based on 100 mole percent total dicarboxylic acid component:
- a. about 100 to about 40 mole percent of a terephthalic acid component;
- b. about 0 to about 60 mole percent of a linear aliphatic dicarboxylic acid component;
- and
- c. optionally about 2 to about 60 mole percent of a non-linear dicarboxylic acid component;
- II. a glycol component consisting essentially of, based on 100 mole percent total glycol component:
- a. about 99.5 to about 30 mole percent of a linear glycol component;
- and
- b. about 0.5 to about 70 mole percent of a polyalkylene ether glycol component.
6 more elements
Dependencies are inferred from the claim text.