Patent · US Active

Process for isolating pure tert-butyl (meth)acrylate from crude tert-butyl (meth)acrylate by distillation

US10730823B2 · kind B2 · utility

0Cited by

2References

22Claims

0Family size

Assignee

BASF SE

Inventors

Ortmund Lang · Quirnbach, DE
Bernd Metzen · Ludwigshafen am Rhein, DE
Claus Hechler · Mannheim, DE

Key dates

Filing date	Dec 11, 2017
Grant date	Aug 4, 2020
Priority date	—
Expiry date	Dec 11, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C69/54
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for isolating pure tert-butyl (meth)acrylate from crude tert-butyl (meth)acrylate by distillation, wherein the process is carried out in a dividing wall column having separation-active internals and a vaporizer and in which a dividing wall is arranged in the longitudinal direction of the column to form an upper joint column region, a lower joint column region, an inflow section having a side feed point, and an offtake section having a side offtake point, where the column has from 20-80 theoretical plates and the ratio of the amount of liquid at the upper end of the dividing wall going to the enrichment section and the stripping section of the column is set in the range from 1:0.2 to 1:5.

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