METHOD OF THERMIC DECOMPOSITION OF HIGH-BOILING VAT RESIDUE OF BISPHENOL A DISTILLATION OBTAINED BY PHENOL AND ACETONE CONDENSATION Russian patent published in 1997 - IPC

FIELD: chemical technology, phenolic resin processing. SUBSTANCE: high-boiling vat residue is heated in column type reactor in column vat at 310-340 C together with phenolic resin of phenol production by cumene method. Mass ratio vat residue : phenolic resin = 1:(1-10). Raw is fed to column middle part and the formed components were taken off continuously as distillate and vat liquid. EFFECT: improved method of decomposition. 1 tbl