Patent · US Active

Acesulfame potassium compositions and processes for producing same

US10590098B2 · kind B2 · utility

9Cited by

26References

39Claims

0Family size

Assignee

Celanese International Corporation · US

Inventors

Christoph Mollenkopf · Frankfurt am Main, DE
Peter Groer · Babenhausen, DE
Arvind Yadav

Key dates

Filing date	Feb 12, 2019
Grant date	Mar 17, 2020
Priority date	—
Expiry date	Feb 12, 2039

Classification

Technology area (CPC A)Human Necessities
CPC primaryA23V2002/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Improved processes for producing high purity acesulfame potassium. In one embodiment, the process comprises the steps of contacting a solvent, e.g., dichloromethane, and a cyclizing agent, e.g., sulfur trioxide, to form a cyclizing agent composition and reacting an acetoacetamide salt with the cyclizing agent in the composition to form a cyclic sulfur trioxide adduct. The contact time is less than 60 minutes. The process also comprises forming from the cyclic sulfur trioxide adduct composition a finished acesulfame potassium composition comprising non-chlorinated, e.g., non-chlorinated, acesulfame potassium and less than 35 wppm 5-halo acesulfame potassium, preferably less than 5 wppm.

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