METHOD FOR OBTAINING MONOMER CONTAINING SULPHONIC ACID GROUP Russian patent published in 2021 - IPC C07C303/32 C07C309/10 

FIELD: chemistry.

SUBSTANCE: invention relates to methods for obtaining monomers containing a sulphuric acid group. Proposed is a method for obtaining a monomer containing a sulphuric acid group by the formula CF₂=CFO(CFX)_nSO₃Y is proposed, including the stage of combining and stirring a cyclic compound by the general formula (1) and a silanol compound by the general formula R¹R²R³Si(OM), wherein X constitutes F or CF₃, and n is an integer from 1 to 6, wherein when n is greater than or equal to 2, all CFX can be the same or different; M constitutes an alkali metal or alkaline earth metal; and each of R¹ to R³ independently constitutes an optionally substituted hydrocarbon group with 1 to 10 carbon atoms, or OM, where M is an alkali or alkaline earth metal.

EFFECT: proposed method allows obtaining a monomer containing a sulphuric acid group with high yield, usable as a raw material for fluorine-based polymer electrolytes, such as membranes for fuel elements, catalytic binding polymers for fuel elements, and membranes for chlor-alkali electrolysis.

4 cl, 8 ex