Patent · US Active

Method for production of methyl methacrylate by oxidative esterification using a heterogeneous catalyst

US10745341B2 · kind B2 · utility

0Cited by

12References

10Claims

0Family size

Assignees

DOW GLOBAL TECHNOLOGIES LLC · US
Rohm and Haas Company · US

Inventors

Dmitry A. Krapchetov · Lansdale, US
Kirk W. Limbach · Dresher, US
Daniel A. Hickman · Midland, US
Jeffrey A. Herron · Midland, US
Kurt W. Olson · Midland, US
D. Wayne Blaylock · Richmond, US

Key dates

Filing date	Jun 25, 2018
Grant date	Aug 18, 2020
Priority date	—
Expiry date	Jun 25, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2208/00592
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for preparing methyl methacrylate from methacrolein and methanol. The method comprises contacting in a tubular reactor having at least four zones a mixture comprising methacrolein, methanol, oxygen and a base with a catalyst bed of heterogeneous catalyst comprising a support and a noble metal, wherein reaction zones comprising catalyst beds alternate with mixing zones not comprising catalyst beds.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.