This is the 7587th most frequent Russian word.
дюпона
The word "дюпона" does not appear to be a standard Russian word. It might be a proper noun, brand name, or misspelling.
In this sentence, 'дюпона' refers to the proper name of the company Dupont, as used in a possessive form in Russian.
Компания Дюпона разрабатывает инновационные материалы.
The company Dupont develops innovative materials.
Here, 'дюпона' represents the material or brand, indicating something developed or associated with the Dupont company.
Бутылка была из дюпона, что делало её лёгкой и прочной.
The bottle was made of DuPont, which made it light and durable.
In this usage, 'дюпона' refers to the publisher or the company associated with the textbook, showing attribution of source.