By Cameron Chai
Bayer MaterialScience announced that Dr. Raymond Stewart, senior scientist at Coatings, Adhesives & Specialties business development, will present his recent findings about the effects of selecting waterborne polyurethane dispersions (PUDs) for coating applications at Waterborne Symposium 2012.
The presentation is titled as “Waterborne Polyurethane Dispersions — The Key Tool for Today's Coatings Chemist in Product Development.”
Continuous product development is required to meet the rising demands of the coating industry. Waterborne polyurethane dispersions (PUDs) are a key element of the coating formulator’s toolkit to develop products for the industrial, architectural and specialty coatings sectors. PUDs are utilized for their exceptional features that include water resistance, chemical resistance, solvent resistance, durability, varying degrees of flexibility and excellent film hardness. These materials enable formulators to achieve coatings properties that are not possible while using other types of resins.
Dr. Stewart will discuss the innovation in one-component (1K) thermally cured PUD and 1K ambient-cure PUD. Ambient-cure coatings such as house paint, decorative lacquer, parquet floor coatings and wood and furniture coatings get cured at room temperature. But, thermally cured PUDs need external heat application for curing. Thermally cured coatings are industrial coatings and are not suitable for DIYs. Bayer’s scientist has tested different waterborne PUDs and has compared the features of coatings, including abrasion, water and crack resistance, pencil hardness, tack-free time and elongation property at the break.