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  • 09월 03일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Organometallic catalysts for polyolefin industry

등록일
2018년 8월 29일 11시 12분 43초
접수번호
1941
발표코드
KCS2-1 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
수 15시 : 10분
발표형식
심포지엄
발표분야
KCS - [KCS-Chemical Industry Joint Symposium] Frontiers in Organometallic Catalysis
저자 및
공동저자
Bun Yeoul Lee
Department of Molecular Science and Technology, Ajou University, Korea

Triblock copolymers of polystyrene (PS) and polyolefin (PO), e.g., PS-block-poly(ethylene-co-1-butene)-block-PS (SEBS), are attractive materials for use as thermoplastic elastomers, and are produced commercially by a two-step process, which involves the costly hydrogenation of PS-block-polybutadiene-block-PS. I will present a one-pot strategy for attaching PS chains to both ends of PO chains to construct PS-block-PO-block-PS directly from olefin and styrene monomers (Scheme a). A practical and simple method for the preparation of ABA-type olefin triblock copolymers, e.g., PE-b-poly(ethylene-co-propylene)-b-PE will be presented. been described (Scheme b). The original Sasol catalytic system for ethylene tetramerization is composed of a Cr source, a PNP ligand, and MAO (methylaluminoxane). The use of expensive MAO in excess has been a critical concern in commercial operation. An extremely active catalytic system that avoids the use of MAO will be presented.


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