Silica Matting Agents and Flatting Agents for Paints and Coatings

For more than 40 years, our technical expertise has been focused on tailoring the characteristics of silica to meet the needs of our customers.

Manufacturers of paints, lacquers and paper require specific surface effects from their products.  GASIL silica additives have the consistent high performance that is critical for success in the surface coatings industry.  PQ Corporation's excellence in product performance is supported by a commitment to superior customer service and high quality technical support.  We offer an exacting standard of technical and analytical service that is dedicated to working in partnership with our customers to ensure the best solutions are available for your needs.  This is vouched with our global manufacturing facilities and select choice of distributors, who are recognised experts in supplying the paints and coatings industry.  The result is that PQ Corporation offers unparalleled service focused at offering the best value to our customers and is acknowledged as a premier supplier of additives to the paints and coatings industry.

Mechanism
When light strikes a surface it can be reflected, absorbed or scattered.  Glossy coatings are smooth, mirror-like finished that reflect light at the same angle at which it hits the surface.  Matting/flatting agents introduce micro-roughness to the surface causing the light to be reflected in a diffused manner, which reduces the apparent gloss.  This effect is the result of matting/flatting agent particles that protrude upwards through the surface on a microscopic scale and are not visually or texturally apparent.    
                                                                                        
The number of particles at the surface determines the degree of micro-roughness produced.  This in turn is influenced by properties such as particle size, particle size distribution, particle density (pore volume) and, of course, the amount of matting/flatting agent or extender employed.

                                                                                

                                         Laser profilometry of matt/flat pigmented polyester coil coating formulated using 3% wt of a GASIL silica


                                                                                
                                        
 
                                                                        Matting efficiency of GASIL grades in Polyester Coil formulation



Health, Safety &
Environment
    |    North America    |    EMEA    |    Mexico    |    South America    |    Asia Pacific