Process of rendering copolymer powders of maleic anhydride and an alkyl vinyl ether prepared in benzene solvent substantially benzene-free

Process of rendering copolymer powders of maleic anhydride and an alkyl vinyl ether prepared in benzene solvent substantially benzene-free

Substantially benzene-free copolymers of maleic anhydride and alkyl vinyl ethers having benzene present in an amount of less than 1 ppm and toluene present in an amount of about 2.0 wt. % or less are provided by treating the copolymer powder with toluene at a temperature of about 115 DEG C. to about...

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Bibliographische Detailangaben
Hauptverfasser: KWAK, YOON T, PLOCHOCKA, KRYSTYNA, TAZI, MOHAMMED
Format: Patent
Sprache:eng
Schlagworte:
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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Zusammenfassung:Substantially benzene-free copolymers of maleic anhydride and alkyl vinyl ethers having benzene present in an amount of less than 1 ppm and toluene present in an amount of about 2.0 wt. % or less are provided by treating the copolymer powder with toluene at a temperature of about 115 DEG C. to about 125 DEG C.