Preparation method for polyhexafluoroepoxypropanediacyl fluoride

Preparation method for polyhexafluoroepoxypropanediacyl fluoride

The invention discloses an improved preparation method for polyhexafluoroepoxypropanediacyl fluoride. The preparation method comprises the steps of: in a polar non-proton carbon-hydrogen organic solvent, taking a composition of perfluoro-2,7-bis(trifluoromethyl)-3,6-dioxo-octyl-diacyl fluoride and a...

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Hauptverfasser: LI YITAO, XU JUNXING, ZHANG BINGBING, ZHENG BAOYE, FENG HAIBING, YOU MENGMENG, LU CUIFANG, YANG FENG
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Sprache:eng
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator LI YITAO
XU JUNXING
ZHANG BINGBING
ZHENG BAOYE
FENG HAIBING
YOU MENGMENG
LU CUIFANG
YANG FENG
description The invention discloses an improved preparation method for polyhexafluoroepoxypropanediacyl fluoride. The preparation method comprises the steps of: in a polar non-proton carbon-hydrogen organic solvent, taking a composition of perfluoro-2,7-bis(trifluoromethyl)-3,6-dioxo-octyl-diacyl fluoride and alkali metal fluoride as an initiator, adding a fluorine-containing diluent at a low temperature, and introducing hexafluoroepoxypropane for performing ring-opening polymerization to prepare polyhexafluoroepoxypropanediacyl fluoride. The method is simple in operation steps and relatively low in cost, and the average molecular weight of prepared polyhexafluoroepoxypropanediacyl fluoride can reach 10,000.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title Preparation method for polyhexafluoroepoxypropanediacyl fluoride
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