Denis Alekseevich Lenev

Introduction: Denis Alekseevich Lenev is an accomplished inventor based in Khimki, Russia, known for his significant contributions to the field of polymer chemistry. With a portfolio boasting five patents, Lenev has cemented his reputation as a leading figure in the development of flame retardants and catalyst systems for olefin oligomerization. His innovations are crucial for enhancing materials used in various industries.

Latest Patents: Among his most notable patents is the invention of a modified diene-containing (co)polymer, specifically a modified styrene-butadiene copolymer. This innovative polymer is recognized for its effectiveness as a flame retardant in expandable polystyrene polymer compositions. Lenev’s invention addresses pressing needs in safety and performance, characterized by high thermostability, with a 5% weight loss temperature of at least 180° C, and a molecular weight exceeding 1500 g/mol. Additionally, this polymer exhibits a halogen content of no less than 35 wt. %, while the content of tertiary and/or allyl halogenides remains minimal. This advancement allows for the production of polystyrene granules with a yellowness index of 2 to 6 units, comparable to those containing HBCD (from 0 to 3 units).

Another significant invention pertains to a catalyst system for olefin oligomerization aimed at producing linear α-olefins, particularly hexene-1. This catalyst system comprises a chromium source compound, a nitrogen-containing ligand, alkylaluminum, and a zinc compound. Lenev’s method involves activating the catalyst system through specific heating and irradiation techniques, paving the way for efficient olefin oligomerization processes.

Career Highlights: Denis Lenev is associated with Public Joint Stock Company Sibur Holding, an industry leader in the petrochemical sector. Within this esteemed organization, he has developed groundbreaking technologies that contribute to the efficiency and safety of polymer-related materials, underscoring his role as a key innovator.

Collaborations: Throughout his career, Lenev has collaborated with esteemed colleagues such as Timur Mikhailovich Zilbershtein and Maxim Vladimirovich Lipskikh. These partnerships with fellow experts have fostered a dynamic environment for innovation, aiding in the advancement of polymer chemistry and the commercial application of his patents.

Conclusion: Denis Alekseevich Lenev exemplifies a dedicated inventor making significant strides in polymer technology. With five patents that enhance both safety and efficiency in material applications, his contributions underscore the importance of innovation in addressing contemporary industrial challenges. As his work continues to evolve, Lenev remains a pivotal figure in the realm of chemical engineering and polymer science.

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