Provided is a process for the preparation of zopiclone, an intermediate in the synthesis of eszopiclone. The apparatus includes a baffle assembly adapted to be positioned upstream of the wheel assembly for deflecting airflow away from the wheel assembly so as to reduce the incident pressure on the wheel assembly. Potential barriers are formed at the interfaces of the barrier region and the intrinsic or lowly doped regions. The dispensing element is affixed to the edge of a garment, preferably along a hemline or collar. The compounds must nucleate polymer crystals at a higher temperature than the target polypropylene without the nucleating agent during cooling.