Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2006-12-05
2006-12-05
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C264S176100, C521S092000, C521S125000, C525S418000, C525S437000, C528S300000, C528S301000
Reexamination Certificate
active
07144972
ABSTRACT:
The present invention provides certain aromatic copolyetheresters that include hydroxyalkanoic acid residues, and processes for making the copolyetheresters, and articles containing the copolyetheresters. The copolyetheresters have desirable thermal properties, and can be used in forming shaped articles, such as films, coatings and laminates. The copolyetheresters are produced from a mixture of aromatic dicarboxylic acids, hydroxyalkanoic acids, a poly(alkylene ether) glycol, a glycol component, optional other glycol, optional branching agents, and optional color reducing agent components. Some of the copolyetheresters are biocompostable.
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Boykin Terressa
Cash Barry Dale
Dalickas Gail A.
E. I. du Pont de Nemours and Company
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