METHOD FOR PRODUCING POLYORGANOSILOXANE MOLECULAR BRUSHES Russian patent published in 2022 - IPC C08G77/06 C08G77/42 C08G77/12 C08G77/20 C08G77/32 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of chemistry and chemical technology of organosilicon compounds. Proposed is a new method for producing polysiloxane molecular brushes by the general formula (I), wherein R represents a radical -CH₃ or -C₂H₅, n stands for an integer from a series of numbers from 12 to 3,000, and m stands for an integer from a series of numbers from 8 to 150. The method includes the interaction of poly(sodiumoxy)methylsiloxane and vinyldimethyl chlorosilane resulting in a polyfunctional linear polymethyl(vinyldimethylsiloxy)silsesquioxane containing a vinyldimethylsiloxy group by each silicon atom of the main chain, and the subsequent hydrosilylation thereof with a monofunctional hydride-containing linear polydiorganosiloxane by the general formula C₄H₉-[R₂SiO]_m-SiR₂H.

EFFECT: creation of a new, more technologically simple method for producing polyorganosiloxane molecular brushes of the set structure, which ensures the control of the side chain grafting density.

1 cl, 3 dwg, 18 ex