| 摘要 |
<p>A process by which tetracyclododecene for use as a material for cycloolefin (co)polymers having excellent optical properties, high transparency, heat resistance, and oil-absorbing properties can be continuously and stably produced over long even from inexpensive crude DCPD. In the process for the continuous production of a tetracyclododecene compound, a 2-norbornene compound is separated and recovered after reaction and reused as a starting material. Thus, the material is effectively utilized and the target compound can be efficiently synthesized. Further, at least part of a 2-methyl-2-norbornene compound which generates as a by-product and is apt to come into the 2-norbornene compound to be circulated is removed from the system. Thus, adverse influences of the accumulation of that by-product are diminished to enable the operation to be stably and continuously conducted over long.</p> |
