METHOD FOR OBTAINING METHYL SILOXANE COPOLYMERS WITH AZIDOPROPYL AND SYLIL HYDRIDE FUNCTIONAL GROUPS Russian patent published in 2023 - IPC C08G77/06 C08G77/12 C08G77/26 

FIELD: organosilicon compounds.

SUBSTANCE: proposed is a method for preparing methylsiloxane copolymers with azidopropyl and hydridesilyl functional groups of general formula (I), where R'=H or –(CH₂)₃-N₃, R”=–(CH₂)₃-N₃ or H, n= 10-1350, m=1-100, which consists in catalytic copolymerization of octamethylcyclotetrasiloxane and a mixture of oligomethylhydrosiloxane and bis-(azidopropyl)tetramethyldisiloxane or hydrolysis product of 3-(azidopropyl)methyldimethoxysilane and bis-(hydride)tetramethyldisiloxane by the cationic mechanism. Also proposed is a method for producing methylsiloxane copolymers with azidopropyl and hydridesilyl functional groups of general formula (I) by the anionic mechanism.

EFFECT: creation of a method for producing methylsiloxane copolymers with azidopropyl and hydridesilyl functional groups, having a multifunctional structure, without the use of organic solvents, which gives a high yield of a product of a given structure.

2 cl, 3 dwg, 8 ex

(I)