METHOD OF PRODUCING SOLUBLE HEXAGONAL BORON NITRIDE Russian patent published in 2013 - IPC B82B3/00 C01B21/64 C01B35/14 

FIELD: chemistry.

SUBSTANCE: invention relates to colloidal solutions of different nano-forms of hexagonal boron nitride (h-BN) in liquid media, and specifically to obtaining hexagonal boron nitride (h-BN) which is soluble in water and polar solvents. The method of obtaining soluble hexagonal boron nitride involves mixing hexagonal boron nitride with a functionalising agent. The reaction mixture is then heated and the obtained product is dissolved in a solvent with ultrasonic action and the solution of the end product is separated. The functionalising agent used is hydrazine or a mixture of nitric acid and sulphuric acid or oleum. The reaction mixture is dispersed by ultrasound with subsequent heating and periodic ultrasonic dispersion during heating. The process is carried out in a closed volume. The obtained product is dispersed by ultrasound in water or a polar organic solvent.

EFFECT: method enables to simplify and increase efficiency of producing soluble functionalised h-BN by increasing output of soluble h-BN and using cheaper technologically acceptable functionalising agents.

4 cl, 1 dwg, 3 ex