PROCESS FOR PREPARING POLYOXYMETHYLELE DIMETHYL ETHERS FROM METHANOL AND FORMALDEHYDE

摘要

1 6 AN ORGANIC PHASE E2 COMPRISING TRI- AND TETRAOXYMETHYLENE GLYCOL CLIMETHYL ETHER (POMDMEN=3.@); F) FEEDING THE ORGANIC PHASE E2 INTO A FOURTH DISTILLATION COLUN-LN AND 5 SEPARATING INTO A LOW BOILER FRACTION F] SUBSTANTIALLY CONSISTING OF FORMALDEHYDE, WATER, METHYLENE &LVCOL AND POLYOXYRNETHYLENE GLYCOLS, AND A HICH BOILER FRACTION F`2 SUBSTANTIALLY CONSISTING OF TRI- AND TETRAOXYMETHYLENE GLYCOL DIMETHYL ETHER (POMDME,,3.4)