PROCESS FOR PRODUCING MMA AND/OR MAA FROM ACETONE CYANOHYDRIN AND SULFURIC ACID

摘要

A kind of multi-stage process prepares methacrylic acid and its ester and cracks hydrolysate by hydrolysis ACH, and by cracked product with desired acid or ester, wherein the first hydrolysis reactor mean temperature is 55 degrees Celsius to 70 degrees Celsius.