Continuous process for preparing a polyurethane latex

Details Continuous process for preparing a polyurethane latex Continuous process for preparing a polyurethane latex

1999-02-16

2000-07-11

Niland, Patrick D.

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...

523315, 524591, 524840, C08J 300, C08K 320, C08L 7500

Patent

active

060874406

ABSTRACT:
A polyurethane/urea/thiourea latex having a narrow molecular weight polydispersity and sub-micron particle size can be prepared by first preparing a high solids (between about 65% and 74% solids) latex of a polyurethane/urea/thiourea prepolymer, then contacting the emulsion with a chain-extending reagent under such conditions to form the polymer latex.

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