Membrane process for separation of organic liquids

• Main Authors: BARTELS; CRAIG R, PASTERNAK; MORDECHAI, REALE, JR.; JOHN, SHAH; VATSAL M
• Format: Patent
• Language: English
• Published: 02.10.1990
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

A mixture of alcohol, such as methanol, and organic oxygenate, such as dimethyl carbonate, is treated to recover product of decreased methanol content by pervaporation across a composite membrane of a polyvinyl alcohol and a polyacrylic acid on a polyacrylonitrile support layer.