METHOD FOR PRODUCTION OF BIOCIDE COMPOSITION Russian patent published in 2005 - IPC

FIELD: organic chemistry, in particular disinfectants.

SUBSTANCE: method for production of biocide composition based on mixture of water-soluble, hydrolysis resistant polyhydric alcohol boric acid esters containing 2-5 % of Catamine AB in two reactors includes esterification of high boiling fraction light cut from 4,4-dimethyldioxane-1,3 synthesis byproducts with boric acid at 104-110°C followed by hydrolysis and precipitated boric crystal separation on filter installed in bottom of the first reactor; recycle of separated crystals into process; and distillation from filtrate excessive water, formaldehyde, and low boiling organic compounds. Unlike to prior art part of Catamine AB contained in abovementioned light cut of high boiling byproducts (0.3-0.5 mass %) is gradually fed in esterification step into the first reactor with rate at most 0.6-0.8 h^-1.

EFFECT: process with increased capability; biocide composition of high purity and high consumer properties.

3 cl, 2 tbl, 5 ex