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Preparation of Heavily Fluorinated Aromatic Diglycidyl Ethers

IP.com Disclosure Number: IPCOM000088939D
Original Publication Date: 1977-Aug-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Crowley, JI: AUTHOR [+2]

Abstract

The diglycidyl ethers of 1.3-bis(2-hydroxyhexafluoro-2-propyl)-5-perfluoro alkyl-benzene are prepared under conditions similar to those taught by the prior art, with the exception that the final wash with water is exhaustively performed to insure the removal of all traces of base. The ether solution of the diglycidyl ethers are then thoroughly dried to remove all moisture. After removing almost all traces of ether, sufficient dichloromethane is added to redissolve the viscous product which dried over MgSO(4). When all of the dichloromethene has been removed under reduced pressure, the viscous oil is pumped under high vacuum for at least 48 hours or until bubbling of the volatile materials ceased.

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Preparation of Heavily Fluorinated Aromatic Diglycidyl Ethers

The diglycidyl ethers of 1.3-bis(2-hydroxyhexafluoro-2-propyl)-5-perfluoro alkyl-benzene are prepared under conditions similar to those taught by the prior art, with the exception that the final wash with water is exhaustively performed to insure the removal of all traces of base. The ether solution of the diglycidyl ethers are then thoroughly dried to remove all moisture. After removing almost all traces of ether, sufficient dichloromethane is added to redissolve the viscous product which dried over MgSO(4). When all of the dichloromethene has been removed under reduced pressure, the viscous oil is pumped under high vacuum for at least 48 hours or until bubbling of the volatile materials ceased.

The diglycidyl ethers, prepared by using the above procedures, are sufficiently pure that no distillation of the final product is required. Analytical samples of the diglycidyl ethers can be obtained by passing the sample in ether through a column of silica gel under nitrogen pressure using 1:1 petroleum ether/ether as eluant.

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