Reverse Impact Test

Adhesion of Polyester Baking Enamel on CRS

Conclusions:

1. Without adhesion promoter (control>50% of coating removed

2. Addition of D-525.31 to the graind stage sharply reduces coating removal as follows:
       

Control	50%
2phr	<1%
3phr	0%

3. Excellent humidity and salt-fog resistance

WB Acrylic Stain
180 days exposure

WB Acrylic Stain
with 1.0 phr Chartwell B-515.71
(post added), 180 days exposure