CPC C08G 18/755 (2013.01) [C08G 18/12 (2013.01); C08G 18/5042 (2013.01); C08G 18/73 (2013.01); C08G 18/7825 (2013.01); C09D 175/02 (2013.01)] | 20 Claims |
1. A polyisocyanate resin, comprising:
from 25 wt % to 50 wt %, based on a total weight of the polyisocyanate resin, of a first cycloaliphatic polyisocyanate having an NCO % of from 12 wt % to 20 wt % based on ISO 11909:2007; and
from 50 wt % to 75 wt %, based on a total weight of the polyisocyanate resin, of a flexibilizing component, comprising
an isocyanate-terminated reaction product of a second cycloaliphatic polyisocyanate and an isocyanate-reactive material, the isocyanate-terminated reaction product having a Tg of less than −30° C. based on a Differential Scanning Calorimetry (2nd Heating) temperature scan from −100° C. to 150° C. using 20° C./min heating and cooling ramps, and
a linear aliphatic polyisocyanate having a number average isocyanate functionality of from 2 to 3 based on gel permeation chromatography,
wherein the isocyanate-terminated reaction product and the linear aliphatic polyisocyanate are present at a weight ratio of from 0.5 to 3.
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