30.12.2022 y. at 11:00 o'clock Rajabov Yorkinbek Saifiddin ugli was defended on the topic: «Development of the composition and technology for obtaining composite polymer coatings and their application in the production of reinforced concrete products», in the specialty: 02.00.07 – "Chemistry and technology of composite, varnish and rubber materials" and 05.09.05 – "Construction materials and products" (technical sciences) for the degree of Doctor of Philosophy in technical sciences (РhD).