| 摘要 |
PURPOSE:The titled novel polymer useful as a separating membrane for gases, etc. for separation and concentration of gases, having >=weight-average molecular weight of >=a specific value, obtained by polymerizing a substituted acetylene with a 1-alkyldimethylsilyl-1-propyne in a specific composition. CONSTITUTION:(A) A substituted acetylene (e.g., 2-decyne, etc.) shown by the formula I (R<1> is H, or alkyl; R<2> is alkyl) is copolymerized with (B) a 1-alkyldimethylsilyl-1-propyne (e.g., 1-trimethylsilyl-1-propyne, etc.) shown by the formula II, to give the desired polymer comprising 10-90mol% structural unit shown by the formula III and 90-10mol% structural unit shown by the formula IV, having >=10,000 weight-average molecular weight. The copolymer is dissolved in toluene, etc. to give a solution, a porous membrane is immersed in it so that the polymer is applied to the surface of the membrane, to obtain a separating membrane for gases. |
