Moisture scavenger for Polyurethane Coating
The moisture may originate in the atmosphere or be present in the raw materials, such as the pigments, extenders, solvents, etc.
Preventing this reaction from occurring prevents pinhole defects from appearing in the coating surface which will affect the coating integrity and ultimately lead to corrosion of the substrate.
As a moisture scavenger, Incozol 2 eliminates the generation of carbon dioxide gas by preferentially reacting with moisture over isocyanate.
Below pictures are discs with an aliphatic PU prepolymer with and without oxazolidine in the formulation.
On application, the reaction with moisture produces visible pinhole defects (below left) in comparison to the formulation incorporating oxazolidine (below right).
As demonstrated in the 2 pictures above aliphatic prepolymer with oxazolidine
shows defect free film (no bubbling/ gassing)
By acting as a very effective moisture scavenger in the coating system, Incozol 2 will:
- Prevent the consequences of corrosion and weathering by eliminating pinhole defects in the dried film
- Maintain film performance during application and in its final cured state