Aqueous dispersion of an aqueous hydrazine-terminated polyuretha

Details Aqueous dispersion of an aqueous hydrazine-terminated polyuretha Aqueous dispersion of an aqueous hydrazine-terminated polyuretha

1996-04-29

1997-12-23

Niland, Patrick

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524591, 524839, 524840, C08J 300, C08K 320, C08L 7500, C08L 5100

Patent

active

057008671

ABSTRACT:
An aqueous dispersion of an aqueous polyurethane having an ionic functional group, polyoxyethylene units and terminal hydrazine functional groups is provided. Content of the ionic functional group is about 5 to about 180 milliequivalent per 100 g of the aqueous polyurethane, and content of the polyoxyethylene unit is about 20% by weight or less of a weight of the aqueous polyurethane. The aqueous dispersion is used for a composition for ink, coating or adhesive. Storage stability, water resistance, pigment dispersibility, and adhesion to various kinds of substrates, particularly non-polar substrates, of the aqueous dispersion and the composition are excellent.

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