Patent · US Expired

Process for the preparation of vinylene carbonate, and the use thereof

US6395908B1 · kind B1 · utility

6Cited by

2References

15Claims

0Family size

Assignee

Merck Patentgesellschaft · DE

Inventors

Bernhard Seifert · Wien, AT
Sylvia Becker · Seeheim-Jugenheim, DE
Mark Neuschutz · Mühltal, DE

Key dates

Filing date	Nov 20, 2000
Grant date	May 28, 2002
Priority date	—
Expiry date	Nov 20, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a process for the preparation of vinylene carbonate of the formula (I) by reacting a monohaloethylene carbonate of the formula (II) in which X is a halogen atom, with a dehydrohalogenating agent at elevated temperature in the presence of an organic solvent, characterized in that the organic solvent employed is ethylene carbonate.The process according to the invention enables vinylene carbonate to be prepared in a simple manner and in high yield. The vinylene carbonate prepared in accordance with the invention can be used for various applications.

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