By Ralph Jan Wörheide, ORONTEC Introduction When it comes to color testing, there are many precise instruments, color correction software packages, automated spray machines, etc., in the marketplace. Colorimetry is a science of great importance to the paint industry, especially in meeting the high-quality standards of customers. However, the high scientific level and the precision […]
By Wenjun Wu, Dana Garcia, and Jeffrey Schneider, Arkema Inc. Waterborne coatings are multi-component, heterogeneous systems containing a variety of additives, in addition to water, polymer binders, and pigment particles. The distribution of various ingredients in the coating films directly affects a coating’s appearance and performance; for example, optical properties, substrate adhesion, chemical resistance, and […]
By Clifford K. Schoff, Schoff Associates In Part 1 (Coatings Tech, May 2018, p.60), I introduced Hansen Solubility Parameters and their theoretical basis. If you have read that article, your first questions probably were how do I find or measure such parameters and how do I use them. Values for solvents and many different polymers […]
By Dr. Douglas Corrigan, The ChemQuest Technology Institute This article outlines an unmet industry need for formulators to conduct robust testing of their coatings products in real-world or simulated environments that closely resemble an OEM facility’s environmental and processing conditions as coatings are applied and cured. The illustrative examples provided in this article are not […]
By Clifford K. Schoff, Schoff Associates Part 1 (CoatingsTech, May 2018, p.60) introduced Hansen Solubility Parameters (HSP) and their theoretical basis. Part 2 (CoatingsTech, July 2018, p.76) was concerned with sources for HSP data along with information on applications. Besides being helpful in designing paint formulations, solubility parameters can be very useful in solving problems. […]
By Bob Dahlstrom and Jamie Branch, Apellix, United States To take nondestructive testing (NDT) measurements at height, equipment such as aerial lifts, scaffolding, ladders, or other solutions are required to reach areas on ships, bridges, aboveground storage tanks, flare stacks, and other infrastructure and industrial sites. This is both dangerous, due to the possibility of […]
By Mark Langille, Aslin , Izmitli, Tian Lan, Akanksha Agrawal, Chun Liu, Kevin Henderson, and Yujie Lu, The Dow Chemical Company Additives formulating can be resource intensive and time consuming to paint manufacturers due to the plethora of ingredient combinations and interactions that affect performance properties. These challenges may inhibit the efficacy of selected additives, […]
By Clifford K. Schoff, Schoff Associates Solubility of polymers in solvents is extremely important to the coatings industry. If the solvents in a formulation are not able to dissolve the polymer or polymers to be used, either initially or during the dry or bake, the resultant film will be defective. There are two basic ways […]
By K. Abraham Vaynberg, Tom Bidwell, Griffin Gappert, Kent Maghacut, Joseph Ambrosi, and Matt Lano Ashland Specialty Ingredients, Ashland Inc. While paint color can transform the way a room looks, how a paint “feels” is critical to those applying the paint—whether they are professional painters or do-it-yourselfers (DIY). Market research has confirmed this time and […]
By Tyler W. Hodges,† Lisa K. Kemp, Brittney M. McInnis, Kyle L. Wilhelm,† Jonathan D. Hurt, and Steve McDaniel, Reactive Surfaces; and James W. Rawlins, The University of Southern Mississippi The utility of a high-throughput, spectrophotometric assay in screening over 23 enzyme and peptide-based additives against bacterial coating spoilage agents was evaluated. Candidate additives were […]
