Water-dispersible polyisocyanate composition, process for...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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C528S085000, C106S287250

Reexamination Certificate

active

10149412

ABSTRACT:
A water-dispersible polyisocyanate composition comprises a hydrophobic polyisocyanate (A) and a vinyl polymer (B) having a nonionic group and an isocyanate group, in which the hydrophobic polyisocyanate (A) can be dispersed in a water-based medium by the vinyl polymer (B) having a nonionic group and an isocyanate group. The water-dispersible polyisocyanate composition is produced by reacting a hydrophobic polyisocyanate with a vinyl polymer (b) having a nonionic group and an active hydrogen group-containing group capable of reacting with an isocyanate group at a molar ratio of the isocyanate group to the active hydrogen group-containing group of 3 to 350.

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