Berthold Trageser

Title: Berthold Trageser: Innovator in Abrasive Particle Technology

Introduction

Berthold Trageser is a notable inventor based in Freigericht, Germany. He has made significant contributions to the field of abrasive particle technology, holding a total of 2 patents. His work focuses on the development of innovative dispersions that enhance chemical mechanical polishing processes.

Latest Patents

Trageser's latest patents include a dispersion containing pyrogenically manufactured abrasive particles with superparamagnetic domains. This aqueous dispersion comprises abrasive particles that have superparamagnetic metal oxide domains within a non-magnetic metal oxide or non-metal oxide matrix. The average particle size of these abrasive particles is below 400 nm, with a BET surface area ranging from 50 to 600 m²/g. The production process involves dispersing the abrasive particles with an energy of at least 200 kJ/m, utilizing a device that subjects the particles to high pressure before decompression through a nozzle. This method allows the abrasive particles to collide with one another or against the walls of the device, making the dispersion suitable for chemical mechanical polishing (CMP).

Another significant patent by Trageser involves superparamagnetic oxidic particles, which contain superparamagnetic metal oxide domains with diameters ranging from 3 to 20 nm in a non-magnetic metal or non-metal oxide matrix. These particles exhibit a chloride content of 50 to 1000 ppm and are produced through pyrogenic processes. The process involves mixing the precursor of the superparamagnetic domains with the precursor of the non-magnetic matrix in a flame with air and/or oxygen and fuel gas. The resulting particles can be utilized as ferrofluids, showcasing their versatility in various applications.

Career Highlights

Trageser is associated with Degussa Aktiengesellschaft, a prominent company in the field of specialty chemicals. His work at Degussa has allowed him to focus on innovative solutions in abrasive technology, contributing to advancements in the industry.

Collaborations

Throughout his career, Trageser has collaborated with notable colleagues, including Heiko Gottfried and Markus Pridoehl. These collaborations have fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Berthold Trageser is a distinguished inventor whose work in abrasive particle technology has led to significant advancements in the field. His innovative patents and contributions