Sulfonated polyetherketoneketone
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United States of America Patent
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Jan 10, 2006
Grant Date -
Jul 8, 2004
app pub date -
Mar 27, 2002
filing date -
Mar 28, 2001
priority date (Note) -
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Abstract
The invention relates to a sulfonated polyetherketonketone (sPEKK), which is amorphous and/or which can be obtained by sulfonating amorphous PEKK. This sPEKK can be preferably produced by using a diphenyl ether and a benzenedicarboxylic acid derivate. Particularly preferred is the use of benzenedicarboxylic acid dichloride. The benzenedicarboxylic acid derivative is advantageously provided in the form of a mixture consisting of at least two different benzenedicarboxylic acid derivatives, in particular, an isophthalic acid derivative and a terephthalic acid derivative.
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