Ethylene 중합용 Pentamethylene Bridged Dinuclear Zirconocene 합성에 관한 연구 = Studies on the Synthesis of Pentamethylene Bridged Dinuclear Zirconocene for Polyethylene

국문 초록 (Abstract)

본 연구는 메탈로센 신촉매 공정 개발을 위하여 진행되었으며, 하나의 촉매에 두 개의 활성점을 갖는 pentamethylene bridged dinuclear zirconocene을 Noh 등의 protocol을 활용하여 합성하였고, 상업화시 가장 중요한 변수인 반응 수율을 향상시키기 위하여 각 합성 단계의 개선을 시도하였다. Biscyclopentadienyl pentane 합성시 silica gel chromatography column을 이용하여 순수한 ligand를 제조하였고, trimethyltin compound 합성시 용매 변환과 TEA 주입을 통하여 수율을 향상시켰다. 최종 메탈레이션 반응시에는 반응 온도의 변화를 통하여 촉매의 활성을 향상시킬 수 있었다.

다국어 초록 (Multilingual Abstract)

This study was done for the development of a new metallocene catalyst process. The pentamethylene bridged dinuclear zirconocene which have two active sites in one catalyst had been synthesized using Noh et al's protocol and each synthetic step was modified for the improvement of reaction yield which was the most important variable in commercialization. Pure biscyclopentadienylpentane was obtained by passing through silica gel chromatography column and the reaction yield of trimethyltin compound was improved by solvent change and TEA injection. A change in the reaction temperature during the final metallation process also improved the catalytic activity.

목차 (Table of Contents)

• 1.서론
• 2.실험
• 2.1 재료
• 2.2 Ligand 합성
• 2.3 Metallation
• 3.결과 및 고찰
• 3.1 Biscyclpentadienylpentane 합성
• 3.2 Trimethyltin compound 합성
• 3.3 Indenly zirconium trichloride 합성
• 3.4 Pentamethylene bridged indenyl zirconium dichloride 합성
• 4.결론