Aqueous polyurethane dispersions based on polyether polyols of l

Details Aqueous polyurethane dispersions based on polyether polyols of l Aqueous polyurethane dispersions based on polyether polyols of l

1996-05-05

1996-11-19

Michl, Paul R.

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...

524538, 524839, 524840, 528 60, C08J 300, C08K 320, C08L 7500

Patent

active

055763820

ABSTRACT:
Aqueous polyurethane dispersions prepared from chain extended polyurethane prepolymers which are the reaction product of a di- or polyisocyanate, a polyol component containing, in major part, a polyoxypropylene diol having an unsaturation of 0.020 meq/g or less, and a reactive dispersing aid, are suitable for preparing polyurethane films with greater softness and elasticity than similar films prepared from PTMEG, and greater tensile strength and elasticity than polyoxypropylene diols having conventional levels of unsaturation.

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