| 摘要 |
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 |
