Carboxylic acid functional polyurethane polymers and blends ther

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524364, 524507, 524771, 525123, 525424, 525453, 525455, B32B 304

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active

057596662

ABSTRACT:
The invention provides novel macromonomer and carboxyl functional polyurethanes having a high carboxyl content. The invention further provides dispersions, coatings and magnetic recording media comprising these polyurethanes, or blends or copolymers of these polyurethanes with quaternary ammonium compounds. The invention further provides novel dispersions, coatings and magnetic recording media comprising combinations of carboxyl functional polyurethanes having a high carboxyl content with quaternary ammonium polymers.

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