Preparation of glycol diesters from polyethers

Details Preparation of glycol diesters from polyethers Preparation of glycol diesters from polyethers

1992-11-23

1993-10-19

Prescott, Arthur C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C07C 6724

Patent

active

052547230

ABSTRACT:
A process for making glycol diesters from polyethers is disclosed. The polyether is reacted with an acyclic, aliphatic anhydride in the presence of a Lewis acid to produce the glycol diester. The invention provides a way to reuse polyether polyols recovered from polyurethanes by converting them to readily purified glycol diesters. The diesters are useful as solvents and as chemical intermediates.

REFERENCES:
patent: 4298758 (1981-11-01), Cook et al.
patent: 4585592 (1986-04-01), Mueller
patent: 4803299 (1989-02-01), Mueller
Ferric Chloride in Acetic Anhydride. AMild and Versatile Reagent for the Cleavage of Ethers, J. Org. Chem. vol. 39, No. 25, (1974), Bruce Ganem 2nd Vernon R. Small, Jr., pp. 3728-3730.
Cleavage Reactions of Optically Active Secondary Butyl Methyl Ether, Contribution from the Department of Chemistry of Northwestern University, vol. 73 pp. 2428-2431, (1951).
The Cleavage of Ethers, Department of Chemistry, Northwestern University, Robert L. Burwell, Jr. pp. 615-685.

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