HYDROLYSIS RESISTANT POLYESTER FILMS
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United States of America Patent
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Issued Date -
Jun 4, 2015
app pub date -
Feb 5, 2015
filing date -
Mar 7, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A biaxially oriented polyester film comprising polyester and at least one hydrolysis stabiliser selected from a glycidyl ester of a branched monocarboxylic acid, wherein the monocarboxylic acid has from 5 to 50 carbon atoms, wherein said hydrolysis stabiliser is present in the film in the form of its reaction product with at least some of the end-groups of said polyester, and wherein said reaction product is obtained by the reaction of the hydrolysis stabiliser with the end-groups of the polyester in the presence of a metal cation selected from the group consisting of Group I and Group II metal cations.
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