| 摘要 |
PURPOSE:To make it possible to separate an optical isomer, by making cellulose phenylcarbamate a main constituent thereof. CONSTITUTION:Under the presence of a Lew is acid catalyst such as tin compound, phenylisocyanate and cellulose are reacted, and cellulose pheynylcarbamate (carbamate) in a particle shape having a size of 1mum-10mm. is synthesized. It is held by a porous inorganic carrier such as silica having an average hole diameter of 10Angstrom -10mum and a size of 1mum-10mm.. It is used in a chromatography method with numerical average polymerization degree of 5-5,000. Thus, optical isomers, which have been hard to be directly separated so far, can be separated. |
