A method for the preparation of 1,2-propanediol

• Main Authors: KOEHLE, HANS-JUERGEN, IMM, SEBASTIAN, THIELE, GEORG FRIEDRICH, BOLZ, DAVID, JAEGER, BERND, LAZAR, MARINA, WIEDERHOLD, HOLGER
• Format: Patent
• Language: Chinese; English
• Published: 16.06.2022
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The method for preparing 1,2-propanediol comprises the steps (a) reacting propene with hydrogen peroxide in the presence of a phase transfer catalyst and a heteropolytungstate in a liquid reaction mixture comprising an aqueous phase with a maximum apparent pH of 6 and an organic phase comprising a s...