C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
18/12, 402/8
C08G 65/48 (2006.01) B01D 71/52 (2006.01)
Patent
CA 2020796
CASE 3080 "MODIFIED POLY(2,6-DIMETHYL-P-OXYPHENYLENE), A PROCESS FOR ITS PREPARATION AND ITS USE IN GAS MIXTURE SEPARATION MEMBRANES" ABSTRACT An amorphous modified poly(2,6-dimethyl-p-oxyphenylene) (PPO) is described with a glass transition temperature (Tg) within the range of 170-220°C, of which the macromolecules contain units having trialkylsilyl groups bonded to the nucleus and/or to the methyl: Image together with units having hydroxyethyl groups bonded to the nucleus and/or to the methyl: Image - 2 - This modified PPO is prepared by metalating PPO with a metalating agent and reacting the formed metalated PPO with a trialkylsilyl halide and with ethylene oxide in succession. The use of the thus modified PPO for the preparation of flat, including asymmetric, membranes useful in gas mixture separation processes is described.
Assogna Amalia
Gandini Alberto
Roggero Arnaldo
Sisto Raffaello
Stopponi Alessandro
Agip Petroli S.p.a.
Assogna Amalia
Eniricerche S.p.a.
Gandini Alberto
Robic
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