Superb Durability on Glass C-515.72HR (0.35%, 2740* hours)

A study was conducted looking at various Chartwell products in WB Acrylic DAP glass sealant. The sealant was applied to bond 2 clean glass microscope slides with a 1 inch overlap.

After 72 hours of drying, the bonded slides were placed in water at ambient temperature. Time to failure (separation) is as follows:

Water-Borne Solid Stain Applied to Exterior Deck After 6 months exposure

WB Acrylic Stain 180 days exposure	WB Acrylic Stain with 1.0 phr Chartwell B-515.71 (post added), 180 days exposure
Stain applied April 2001; Boston, MA area. Any peeling/ loose stain scraped and removed. Deck washed thoroughly and allowed to air dry 48 hours. Stain pad applied. Temperature varied from 28° F to 98° F during period of 180 days exposure.

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