Sergio Custro

Title: **Innovations by Sergio Custro: A Pioneer in Acetal Polymer Stability**

Introduction

Sergio Custro is a notable inventor based in Gorla Maggiore, Italy, recognized for his significant contributions in the field of polymer science. With a total of four patents to his name, Custro has focused on enhancing the stability and performance of acetal polymers, which are used in various industrial applications.

Latest Patents

Custro's most recent patents illustrate his innovative techniques for improving the stability of acetal polymers:

1. **Process for Improving the Stability of Acetal Polymers** - In this patent, Custro details a method in which the terminal hydroxyl groups of an acetal polymer are esterified or etherified. This process involves a reaction with an end-capping agent, selected from anhydrides of carboxylic acids, orthoesters, and orthocarbonates. The method comprises forming an intimate mixture of the polymer in powder form and a liquid end-capping agent, carefully controlling the amount to maintain the powder's free-flowing characteristics, followed by reacting the mixture under stirring at temperatures ranging from 50°C to 170°C.

2. **Process for Improving the Stability of Etherified Acetal Homopolymers** - This invention focuses on enhancing the thermal and chemical stability of etherified acetal homopolymers. Custro’s method involves heat treating the polymers in the molten state at temperatures of at least 180°C, in the presence of a halide of an alkali or alkaline earth metal. This process leads to significant degradation of unstable polyoxymethylene chains, thereby improving the overall stability of the polymers.

Career Highlights

Custro is affiliated with Società Italiana Resine S.I.R. S.p.A., where he applies his expertise in polymer research and development. His role has allowed him to work on cutting-edge innovations that contribute to advancements in material stability and performance.

Collaborations

Throughout his career, Custro has had the opportunity to collaborate with talented individuals such as Pierino Radici and Paolo Colombo. These partnerships have enabled the exchange of ideas and innovation, fostering a creative environment that promotes significant technological advancements in the field.

Conclusion

Sergio Custro stands out as an influential inventor in the realm of acetal polymers, with a clear focus on enhancing stability through inventive processes. His contributions not only reflect his commitment to innovation but also underscore the importance of collaboration in the pursuit of scientific and technological advancement.