CATALYSTS FOR PRODUCING BROAD MOLECULAR WEIGHT DISTRIBUTION POLYOLEFINS IN THE ABSENCE OF ADDED HYDROGEN

• Main Authors: MCDANIEL MAX P, YU YOULU, CRAIN TONY R, YANG QING
• Format: Patent
• Language: English; Korean
• Published: 24.01.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

본 발명은 대체적으로 수소 첨가없이 넓은 또는 이봉 분자량 분포를 가지는 중합체를 제조하기 위하여 이중 메탈로센 촉매시스템을 이용하는 중합방법을 제공한다. 또한 본 중합방법에 의해 제조된 중합체가 제공되며, 이들 중합체의 Mn 범위는 약 9,000 내지 약 30,000 g/몰이고, 분자량이 증가할수록 단쇄 분지 함량은 감소된다. The present invention provides a polymerization process utilizing a dual metallocene catalyst system for the production of broad or bimodal molecular weight distribution polymers, generally, in the absence of added hydrogen. Polymers produced from the polymerization process are also provided, and these polymers can have a Mn in a range from about 9,000 to about 30,000 g/mol, and a short chain branch content that decreases as molecular weight increases.