PROCESS FOR DEPOLYMERIZATION OF POLYACRYLONITRILE USING HOT WATER

The present invention relates to a process for depolymerizing polyacrylonitrile into water soluble by-products, including ammonia and lower molecular weight carbonaceous materials by contacting the starting materials, polyacrylonitrile, and neutral, hot liquid water at a temperature from about 200.d...

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Bibliographic Details
Main Authors SISKIN, MICHAEL, KNUDSEN, GEORGE A, SALEH, RAMZI Y
Format Patent
LanguageEnglish
French
Published 21.06.1993
Edition5
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:The present invention relates to a process for depolymerizing polyacrylonitrile into water soluble by-products, including ammonia and lower molecular weight carbonaceous materials by contacting the starting materials, polyacrylonitrile, and neutral, hot liquid water at a temperature from about 200.degree.C up to the critical temperature of water at autogenous pressure. The present invention has utility as a means for degrading polyacrylonitrile without producing toxic hydrogen cyanide as a by-product.
Bibliography:Application Number: CA19922084848