Hydrazine extended aqueous polyurethane

Details Hydrazine extended aqueous polyurethane Hydrazine extended aqueous polyurethane

1990-07-06

1992-08-11

Kight, III, John

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...

524839, 428262, 4284247, C08L 8300, C08J 302, C08K 524, C08K 554

Patent

active

051379678

ABSTRACT:
An aqueous dispersion of an anionic polyurethane, said polyurethane comprising a chain extended, aliphatic diisocyanatae containing, prepolymer; said prepolymer including carboxy groups neutralized with a tertiary amine composition comprising dimethylaminoethanol, said prepolymer being chain extended with a diamine comprising hydrazine.
The invention also includes a film formed from the dispersion and a floor covering coated with such film. The film may be crosslinked with an agent such as melamine-formaldehyde resin.

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