H. Sumitomo, K. Hashimoto
1984
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Abstract
The anionic ring-opening polymerization of a bicyclic oxalactam 8-oxa-6-azabicyclo[3.2.1]octan-7-one (abbreviated as BOL) in solution proceeded readily at or below room temperatures in the presence or absence of N-acetylated BOL as an activator, leading to give a high molecular weight poly- amide poly(tetrahydropyran-2,6-diyliminocarbonyl)(polyBOL). Thus the room temperature polymerization and simulteneous film casting on a plate can be easily attained (“casting polymerization”). PolyBOL is characterized by an uncommonly good solubility and a distinguished hydrophilicity. PolyBOL membrane also exhibits interesting properties in view of the absorption and permeation of water and permselectivity for salts and organic solutes in aqueous solutions [1–7].