METHOD OF PRODUCING ANHYDROUS LEAD (II) ACETATE FOR PREPARING ANHYDROUS FILM-FORMING LEAD ZIRCONATE-TITANATE SOLUTIONS Russian patent published in 2012 - IPC C01G21/00 C07C53/10 C07C51/41 

FIELD: chemistry.

SUBSTANCE: invention can be used in microelectronics, particularly for producing nonvolatile ferroelectric memory. The method of obtaining anhydrous lead (II) acetate for preparing anhydrous film-forming lead zirconate-titanate solutions involves reaction of lead oxide PbO, acetic acid and acetic anhydride and then drying the obtained lead (II) acetate in a vacuum. Anhydrous lead (II) acetate is obtained by solid-phase synthesis from lead oxide PbO via reaction thereof with a small amount of acetic acid (2-5 wt % of PbO) in the presence of acetic anhydride taken in excess of 5-10 wt % stoichiometric. Reactant residues - acetic acid and acetic anhydride - are removed by drying the obtained product in a vacuum to granular state. Subsequent dissolution of the anhydrous lead (II) acetate in a pure organic solvent and complexing reaction thereof with zirconium and titanium alkoxides is carried out at temperature 15-40°C.

EFFECT: invention simplifies production of anhydrous lead (II) acetate, having sufficient reaction capacity, high environmental safety of the method.

6 cl, 1 dwg, 1 ex