Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2008-04-15
2008-04-15
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S296000, C528S298000, C528S300000, C528S301000, C528S302000, C528S307000, C528S308000, C528S308600, C525S437000, C525S444000, C525S450000, C524S407000, C428S034900, C428S035700, C428S036400, C428S036500, C428S221000, C428S480000, C428S482000, C428S364000
Reexamination Certificate
active
10887716
ABSTRACT:
Sulfonated aromatic copolyesters and articles made therefrom, and processes for producing the sulfonated aromatic copolyesters and articles are provided. Articles that can be made from the sulfonated aromatic copolyesters include films, coatings and laminates. Some of the compositions and articles are biocompostable. The films can further be used to form shaped articles such as sheets, food packaging such as sandwich wraps, thermoformed containers, and coatings for, for example, films and other substrates. The sulfonated aromatic copolyesters contain a hydroxyalkanoic acid component.
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E. I. du Pont de Nemours and Company
Tanzer Gail D.
Truong Duc
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