Polymerization catalysts for producing polymers with low levels of long chain branching
Номер патента: EP2010577A2
Опубликовано: 07-01-2009
Автор(ы): David C. Rohlfing, Joel L. Martin, Matthew G. Thorn, Max P. McDaniel, Michael D. Jensen, QING Yang, Youlu Yu
Принадлежит: Chevron Phillips Chemical Co LLC, Chevron Phillips Chemical Co LP
Опубликовано: 07-01-2009
Автор(ы): David C. Rohlfing, Joel L. Martin, Matthew G. Thorn, Max P. McDaniel, Michael D. Jensen, QING Yang, Youlu Yu
Принадлежит: Chevron Phillips Chemical Co LLC, Chevron Phillips Chemical Co LP
Реферат: This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging 5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.
Olefin polymerization catalyst and method for producing polyolefin using the same
Номер патента: JP3355572B2. Автор: 浩之 清水,章 佐野,一雄 松浦,雄二 鷲尾. Владелец: Mizusawa Industrial Chemicals Ltd. Дата публикации: 2002-12-09.