Location History:
- Åbo, FI (2007)
- Abo, FI (2007)
- Turku, FI (1999 - 2009)
Company Filing History:
3 out of 1,524 
2 out of 30 
1 out of 7 Years Active: 1999-2009
Title: Claes Zetter: Innovator in Paper Sizing Technologies
Introduction
Claes Zetter, an accomplished inventor hailing from Åbo, Finland, holds a remarkable portfolio of 8 patents. His contributions to the field of paper technology, particularly in the area of paper sizing compositions, reflect his commitment to advancing industry standards.
Latest Patents
Zetter's innovation in paper sizing composition has garnered attention in the industry. His latest patent focuses on the use of alkenyl succinic anhydride (ASA) for the sizing of paper and board. The sizing composition comprises an aqueous emulsion of ASA, incorporating a maximum of 1% by weight of polymeric residues, ideally under 0.5%. This formulation significantly improves the resistance of paper edges against penetration by agents such as hot hydrogen peroxide and lactic acid.
Additionally, Zetter has developed a method for internal sizing of liquid packaging board. This internal size uses a hydrophobising approach that incorporates oxetanon derivatives. The hydrocarbon chains in this composition are primarily derived from linear fatty acids, with a specific percentage coming from branched and typically saturated fatty acids. This innovative method enhances the overall functionality of liquid packaging materials.
Career Highlights
Throughout his career, Claes Zetter has collaborated with renowned companies in the chemical and industrial sectors, including Ciba Specialty Chemicals Corporation and Abb Industry Oy. His expertise in paper technology has positioned him as a key contributor to advancements in this essential field.
Collaborations
Zetter has worked alongside esteemed colleagues, including Markku Nurminen and Kenneth Sundberg. Their collective efforts have played a significant role in pushing the boundaries of research and innovation within the paper manufacturing industry.
Conclusion
Claes Zetter's innovative spirit and extensive patent portfolio exemplify his vital contributions to paper technology. Through his ongoing work and collaborative partnerships, he continues to elevate the standards of paper sizing, ensuring that the industry benefits from enhanced performance and reliability.