PREPARATION OF IMIDE OLIGOMERS
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United States of America Patent
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app pub date -
Jul 3, 2012
filing date -
Jul 5, 2011
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Abstract
Reactive extrusion can be used in a continuous, solvent-less preparation of imide oligomers involving two competing reactions among three ingredients, the first reaction between a dianhydride and a diamine and the second reaction between an endcap and the diamine. The imide oligomer can form a composite via conventional production methods or via formation of a film from imide oligomer re-melted in an extruder before being impregnated into tape or fabric.
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