Patent · US Active

Process for purifying methyl methacrylate of low-boiling components

US11731931B2 · kind B2 · utility

0Cited by

9References

15Claims

0Family size

Assignee

Röhm GmbH · DE

Inventors

Steffen Krill · Mühltal, DE
Daniel Konig · Gerabronn, DE
Belaid Ait Aissa · Darmstadt, DE

Key dates

Filing date	Sep 10, 2020
Grant date	Aug 22, 2023
Priority date	—
Expiry date	Sep 17, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C67/62
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A novel process can be used for purifying methyl methacrylate (MMA) contaminated with low-boiling components by distillation, where the process involves producing MMA by oxidative esterification, and a crude product containing methyl propionate (MP), methyl isobutyrate (MIB), and methacrolein (MAL) as low-boiling components. The process is compatible with MMA produced from C2-based methacrolein containing the low-boiling components specified.

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