Multinuclear metallocene-based catalyst for preparing polyolefin having broad molecular weight distribution and method for preparing polyolefin using the catalyst

• Main Authors: PARK, SUNG HWOON, LIM, JIN MOOK, SHIN, EUN HYE, LEE, HAE IN, MIN, JOON KEUN, CHAE, BYUNG HUN
• Format: Patent
• Language: English; Korean
• Published: 08.02.2019
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention discloses a multi-nuclear metallocene-based catalyst represented by chemical formula 1 below. In addition, the present invention discloses a method for manufacturing a polyolefin having a broad molecular weight distribution by homopolymerizing an olefin monomer or copolymerizing with a styrene or a styrene derivative under a catalyst system comprising a main catalyst of the multi-nuclear metallocene catalyst and a promoter such as alkyl aluminium oxane. (In the chemical formula 1, each substituent is as defined in claim 1) 본 발명은 하기 화학식 1로 나타내는 다핵 메탈로센계 촉매를 개시한다. 또한, 본 발명은 상기 다핵 메탈로센계 촉매의 주촉매와 알킬알루미늄옥산 등의 조촉매를 포함하는 촉매 시스템 하에서 올레핀계 단량체를 단독중합 또는 스티렌 또는 스티렌 유도체와 공중합함으로써 분자량 분포가 넓은 폴리올레핀을 제조하는 폴리올레핀의 제조방법을 개시한다.(1) (상기 식에서, 각각의 치환기는 청구항 1에서의 정의와 같다).