Aliphatic-aromatic copolyetheresters
AssigneeE. I. Du Pont de Nemours and Company
InventorsMark F. Teasley, Fredrik Nederberg
Life of this patent
Estimating the term…
Abstract
Provided are aliphatic-aromatic copolyetheresters that can exhibit biodegradation with improved physical properties. The copolyetheresters can be blended with other polymeric materials, and are useful for making a variety of shaped articles. The aliphatic-aromatic copolyetheresters can include combinations of terephthalic acid or ester with linear aliphatic, or a non-linear dicarboxylic acid or ester, that is condensed with a linear glycol and a polyalkylene ether glycol.
Claims23
An aliphatic-aromatic copolyetherester consisting essentially of:
- a) a dicarboxylic acid component consisting essentially of terephthalic acid;
- and
- b) a glycol component consisting essentially of, based on 100 mol-% total glycol component:
- i. 99.5 to 30 mol-% of a linear glycol;
- and
- ii. 0.5 to 70 mol-% of a polyalkylene ether glycol having a molecular weight within the range of 200 to 4,000 Da.
An aliphatic-aromatic copolyetherester consisting essentially of:
- a) a dicarboxylic acid component consisting essentially of:
- less than 100 to 40 mol-% terephthalic acid, and up to 60 mol-% of a linear aliphatic dicarboxylic acid or derivative thereof;
- and
- b) a glycol component consisting essentially of, based on 100 mol-% total glycol component:
- i. 99.5 to 30 mol-% of a linear glycol;
- and
- ii. 0.5 to 70 mol-% of a polyalkylene ether glycol having a molecular weight within the range of 200 to 4,000 Da.
An aliphatic-aromatic copolyetherester consisting essentially of:
- a) a dicarboxylic acid component consisting essentially of:
- 98 to 40 mol-% of terephthalic acid, and 2 to 60 mol-% of a non-linear dicarboxylic acid component, which is not terephthalic acid, or a derivative thereof;
- and
- b) a glycol component consisting essentially of, based on 100 mol-% total glycol component:
- i. 99.5 to 30 mol-% of a linear glycol;
- and
- ii. 0.5 to 70 mol-% of a polyalkylene ether glycol having a molecular weight within the range of 200 to 4,000 Da.
An aliphatic-aromatic copolyetherester consisting essentially of:
- a) a dicarboxylic acid component consisting essentially of:
- 70 to 40 mol-% terephthalic acid, 30 to 60 mol-% of a linear aliphatic dicarboxylic acid, and 2 to 30 mol-% of a non-linear dicarboxylic acid, which is not terephthalic acid, or a derivative thereof;
- and
- b) a glycol component consisting essentially of, based on 100 mol-% total glycol component:
- i. 99.5 to 30 mol-% of a linear glycol;
- and
- ii. 0.5 to 70 mol-% of a polyalkylene ether glycol having a molecular weight within the range of 200 to 4,000 Da.
Dependencies are inferred from the claim text.