4.2 Hydrophobic Waterbased Dispersion for Improved Coatings
(Room 234-236)
09 Apr 18
2:30 PM
-
3:00 PM
Tracks:
Session 4: Grinding & Dispersing, Session 4: Novel Materials
Manufacturers of coatings, paints and inks continually face challenges associated with meeting stricter, ever-evolving environmental standards, adapting to new applications or technologies, and fulfilling the performance demands of customers and consumers. One of these challenges is shifting from solvent- to water-based coatings systems. This shift to water-based systems has gained momentum in the past few years due to passed legislation regulating the emission of Volatile Organic Compounds (VOCs) from paints and coatings.
We believe that a seamless transition from solvent- to water-based coatings systems can be realized through the use of performance additives that enable and facilitate ease-of-manufacturing as well as improved performance with respect to the base resin system. Using a proprietary process in which a highly hydrophobically treated silica is converted and incorporated into a waterborne dispersion, we developed a new matting dispersion solution for water-based coatings and paints. This new hydrophobic, water-based dispersion offers ease-of-incorporation, as well as high performance for coating formulations: low gloss, improved hardness development with early water resistance, and ease-of-incorporation were observed in urethane, urethane/acrylic hybrid, and acrylic-based systems when compared to the base resins. This new silica dispersion simplifies the manufacturing process and eliminates the need to use low density powders, resulting in cleaner and more efficient operations. Our results show that the hydrophobic water-based dispersion we have developed can be used in coating applications that require low gloss or matte appearance with good haptics, such as those for wood flooring and furniture, automotive interior plastic surfaces, and/or leather coatings.