Alexander C McDonald

Title: Innovations of Alexander C McDonald

Introduction

Alexander C McDonald is a notable inventor based in The Woodlands, TX (US). He has made significant contributions to the field of engineering, particularly in the area of corrosion control and heat transfer in steam generating systems. With a total of 7 patents to his name, McDonald has demonstrated a commitment to advancing technology and improving industrial processes.

Latest Patents

One of McDonald's latest patents is focused on the transport and deposit inhibition of copper in boilers. This invention relates to a method of transporting and inhibiting the deposition of copper and copper-iron materials on heat transfer devices in steam generating systems. The method utilizes a thermally stable chelant and a carboxylated polymeric dispersant as treatment agents. Representative chemicals include 1,10-phenanthroline and a 9:1 methacrylic acid/acrylic acid copolymer.

Another significant patent addresses corrosion inhibitors for ferrous metal in aqueous solutions. This composition and method are designed to control corrosion of steel in aqueous systems, such as cooling and boiler systems. The combination of a nonionic surfactant and an anionic oxygen-containing group, such as one or more alkali metal salts of borate, molybdate, and nitrate/nitrite, provides improved corrosion inhibition of steel. The magnetite layers formed in the presence of this combination exhibit decreased porosity and increased corrosion resistance to acidic solutions. This combination also inhibits the entry of hydrogen into steel when exposed to acidic solutions, thereby preventing hydrogen embrittlement. The preferred nonionic surfactant is a phenol/polyethylene oxide nonionic surfactant, and the preferred alkali metal salt is Na₂MoO₄.

Career Highlights

McDonald is currently associated with Betz Laboratories, Inc., where he continues to innovate and develop solutions for industrial challenges. His work has had a lasting impact on the efficiency and safety of various systems in the engineering sector.

Collaborations

Some of his notable coworkers include James L Soos and Roger D Moulton, who have collaborated with him on various projects and patents.

Conclusion

Alexander C McDonald is a distinguished inventor whose work in corrosion control and heat transfer has significantly advanced industrial practices. His innovative patents reflect his dedication to improving technology and ensuring the efficiency of engineering systems.