1-HYDROXY-2-NAPHTHALINECARBOXYLATE SALT OF 4-HYDROXY-α′- [6-(4-PHENYLBUTOXY)HEXYL)AMINO) METHYL]-1,3-BENZENE DIMETHANOL IN FORM OF SPHERICAL CONGLOMERATIONS OF MICROCRYSTALS, METHOD OF SUPER THIN GRINDING, AND METHOD OF PREPARATION THEREOF Russian patent published in 1998 - IPC

FIELD: chemical industry. SUBSTANCE: present invention describes 1-hydroxy-2- naphthaline carboxylate salt of 4-hydroxy-α′-[6-(4- phenylbutoxy)hexyl] amino) methyl)-1,3-benzenedimethanol in form of spherical coagulations of microcrystals. The letter are free flowing crumalle and finally ground and have preferably average particle size of 70-300 mm and average surface area of 4-12 α′. The present invention also describes preparation method which comprises cooling rapidly hot organic or aqueous salt solution with cold organic or aqueous organic solvent. EFFECT: improved properties of the title compounds. 25 cl, 2 dwg