Werner Kägi

Title: Werner Kagi: Innovator in Linear Copolyesters

Introduction

Werner Kagi is a notable inventor based in Domat/EMS, Switzerland. He has made significant contributions to the field of polymer chemistry, particularly in the development of linear copolyesters. His innovative approach has led to advancements in the preparation processes of these materials.

Latest Patents

Kagi holds a patent for a process for preparing linear copolyesters containing omega-hydrocarboxylic acid units. This process involves using polyesters that consist of at least 90 mol % polyethylene terephthalate units, along with diethylene glycol units and optional catalysts and stabilizers. The method includes adding lactone compounds to the polyester melt in a sealed system under higher pressure than the lactone vapor pressure. The resulting copolyesters maintain the viscosity of the starting polyesters and feature randomly distributed omega-hydroxycarboxylic acid units in their polymer chains.

Career Highlights

Werner Kagi is associated with Ems Inventa AG, a company known for its expertise in polymer technology. His work has been instrumental in enhancing the properties and applications of copolyesters, making them more versatile for various industrial uses.

Collaborations

Kagi has collaborated with notable colleagues, including Klaus Nothhelfer and Werner Stibal. These partnerships have contributed to the advancement of research and development in the field of polymer science.

Conclusion

Werner Kagi's innovative work in the preparation of linear copolyesters has made a significant impact on the polymer industry. His contributions continue to influence the development of advanced materials.