Patent · US Expired

Method for producing ethers, esters or acid anhydrides

US6965047B2 · kind B2 · utility

0Cited by

1References

5Claims

0Family size

Assignee

BASF SE

Inventors

Ingo Klopp · Bad Dürkheim, DE
Thomas Bogenstätter · Bad Dürkheim, DE
Dirk Franke · Birkenheide, DE

Key dates

Filing date	Apr 14, 2003
Grant date	Nov 15, 2005
Priority date	—
Expiry date	Apr 14, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/412
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Ethers, esters or acid anhydrides are advantageously obtained when a cake of a first reactant selected from salts of organic or oxygen-containing inorganic acids or alkoxides disposed on a filter element is flowed through by a solution of a second reactant selected from inorganic or organic acid halides and alkyl halides, so that the insoluble halide salt formed remains on the filter element. The halide salt can thus be removed substantially quantitatively in a simple manner.

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