Company Filing History:
Years Active: 1994-1995
Title: Denis Jehl: Innovator in Modified Polyethylene Terephthalate
Introduction
Denis Jehl is an esteemed inventor based in Gauchy, France. He is recognized for his contributions to the field of materials science, particularly in the development of innovative processes for modifying polyethylene terephthalate (PET) to enhance its properties. With a total of two patents to his name, Denis has garnered attention in the textile industry for his groundbreaking work.
Latest Patents
Denis Jehl's latest patents focus on a sophisticated process for obtaining modified polyethylene terephthalate that is pilling-free. The innovation involves a continuous modification of polyethylene terephthalate by incorporating --SiO-- groups in a specific range of 300 to 700 ppm of Si. This process occurs during the direct esterification reaction between terephthalic acid and ethylene glycol, followed by polycondensation. Notably, methoxyethyl silicate or propyl silicate is introduced at an optimal point when the prepolymer exhibits a weight-average molecular mass of between 9,000 and 16,000, and a polydispersity index of between 1.5 and 2. The reaction takes place at a temperature of 260 to 290 degrees Celsius and a pressure of 1.5 to 2.5 bars, with a minimum silicate/prepolymer reaction time of five minutes. This innovation also includes the development of pilling-free fibers derived from the modified polyethylene terephthalate, showcasing its significant impact on material performance.
Career Highlights
Denis Jehl is currently associated with Rhone-Poulenc Fibres, where he has been driving advancements in fiber technology. His work, particularly in modifying PET for improved durability and performance, demonstrates his commitment to innovation in the textile sector. His patents have contributed significantly to enhancing the quality and longevity of synthetic fibers, marking a notable achievement in his professional career.
Collaborations
Throughout his career, Denis has collaborated with esteemed colleagues Bernard Millaud and Jean Staron. Their combined expertise in materials science and engineering has played a pivotal role in the success of their research and development projects. These collaborations have not only facilitated the advancement of new technologies but have also fostered a culture of innovation within their organization.
Conclusion
Denis Jehl stands out as a remarkable inventor whose contributions to the field of modified polyethylene terephthalate have paved the way for advancements in textile materials. His innovative patent processes and collaborations highlight the importance of research and development in creating high-performance materials. As industries continue to evolve, the impact of Denis's work will undoubtedly resonate in the field for years to come.