Novel silicon-containing copolymer, ultrathin solid membrane composed of said copolymer, use of said solid membrane for concentrating a specified gas in a gaseous mixture, and process for producing said solid membrane

摘要

An ultrathin solid membrane is composed substantially of a silicon-containing copolymer consisting substantially of recurring units derived from a silicon-containing allyl monomer and an ethylenically unsaturated monomer and/or a diene monomer. The ultrathin solid membrane is useful for obtaining a specified gas, such as oxygen, in a concentrated state, from a mixture of two or more gases, such as air.