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Patents

Water Soluble Polyamine

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By: KERRY PIANOFORTE

Editor, Coatings World, Coatings World

Patent No. Europe 1,179,549 A
Akzo Nobel NV was granted a patent for a water soluble or dispersible polyamine with primary amino groups, average MW 200-20,000, useful as a crosslinking agent. It is obtained by reacting polyepoxide with an amino compound having active H atoms and then converting the remaining epoxy groups with ammonia. Waterborne coating compositions are claimed.

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