copolyesters in a sentence

1. Depending upon the microorganism and the cultivation conditions, homo-or copolyesters with different hydroxyalkanic acids are generated.
2. 1, 3-Propanediol can be formulated into a variety of industrial products including aliphatic polyesters, copolyesters.
3. Copolyesters retain their strength, clarity, and other mechanical properties even when exposed to a variety of chemicals that typically affect other materials, such as polycarbonates.
4. It's difficult to find copolyesters in a sentence.