Company Filing History:
Years Active: 1980-1981
Title: Innovations by Donald G. Cole in Titanium Dioxide Manufacturing
Introduction
Donald G. Cole, an innovative inventor based in Pulheim, Germany, has made significant strides in the field of titanium dioxide manufacturing. With a total of three patents to his name, Cole has demonstrated exceptional creativity and insight into chemical processes, particularly those involving titanium compounds.
Latest Patents
One of Cole's latest patents is centered on a novel process for manufacturing titanium dioxide pigment. This method involves reacting excess ilmenite ore with dilute sulfuric acid, maintaining specific concentrations between 25% and 60% by weight. The process is executed in two stages: the first stage retains a temperature up to 140°C, while the second stage operates below 100°C, ultimately generating a salt solution containing titanium and iron. The innovative aspect includes the recycling of spent acid for reaction with the ilmenite ore, enhancing the efficiency of the process. Following this, the titanium is hydrolyzed to produce titanium dioxide hydrate, which is subsequently calcined to yield titanium dioxide pigment.
Another significant patent by Cole is focused on manufacturing titanium compounds using a reducing agent. Similar to his previous work, this process utilizes dilute sulfuric acid in concentrations of 25% to 60% by weight; however, it operates at a lower temperature, below 140°C, in the presence of a reducing agent. The method aims to reduce ferric iron to ferrous iron efficiently. The titanium sulfate produced can be recovered or further processed to create titanium dioxide hydrate, once again emphasizing the importance of recycling spent acid within the reactions.
Career Highlights
Cole's career has been marked by his dedication to innovating processes that enhance the efficiency of titanium production. As an integral part of NL Industries, he has applied his expertise to develop groundbreaking methods leading to improved titanium manufacturing techniques that could benefit various industries.
Collaborations
Throughout his career, Donald G. Cole has collaborated with notable colleagues such as Joseph A. Rahm and Achim Hartmann. These partnerships have enabled Cole to expand his creative ideas and tackle complex challenges within the domain of chemical engineering and materials science.
Conclusion
Donald G. Cole continues to stand out as a prominent inventor in the field of titanium dioxide manufacturing. His innovative approaches and patent contributions reflect a deep understanding of chemical processes, positioning him as a pivotal figure for advancements in material science. His work not only benefits his company, NL Industries, but also sets a benchmark for future innovations in the industry.