Aliphatic-aromatic polyesters, and articles made therefrom

Details Aliphatic-aromatic polyesters, and articles made therefrom Aliphatic-aromatic polyesters, and articles made therefrom

2004-01-30

2008-11-18

Sanders, Kriellion A (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C428S357000, C428S364000, C528S295000, C528S295300, C528S296000, C528S298000, C528S300000, C528S301000, C528S302000, C528S308000, C528S308600

Reexamination Certificate

active

07452927

ABSTRACT:
Sulfonated aliphatic-aromatic polyester compositions having improved thermal properties, and articles such as films, coatings and laminates, produced from the sulfonated aliphatic-aromatic polyester compositions, are provided. Some of the films are biocompostable. Films made from the sulfonated aliphatic-aromatic copolyesters can be used to make shaped articles, such as sheets, thermoformed containers, and coatings for, for example, films and other substrates. The sulfonated aliphatic-aromatic copolyesters are produced from a mixture of aromatic dicarboxylic acids, aliphatic dicarboxylic acids, certain glycols, and components containing alkali metal or alkaline earth metal sulfonate groups, such as a metal 5-sulfoisophthalic acid derivative.

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