RU2016136092A - Производство полиэтиленовых изделий с улучшенными жесткостью, ударной вязкостью и перерабатываемостью - Google Patents
Производство полиэтиленовых изделий с улучшенными жесткостью, ударной вязкостью и перерабатываемостью Download PDFInfo
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Claims (17)
1. Полимер, содержащий этилен и, по меньшей мере, один альфа-олефин, имеющий от 5 до 20 атомов углерода, где полимер имеет:
отношение индекса расплава (ОИР (MIR)) больше чем приблизительно 40;
значение Mw1/Mw2, по меньшей мере, приблизительно 2,0, где Mw1/Mw2 представляет собой отношение средневесовой молекулярной массы (Мw) для первой половины кривой фракционирования при элюировании с повышением температуры (TREF) к Mw для второй половины кривой TREF; и
значение Tw1-Tw2 меньше чем приблизительно -25°С, где Tw1-Tw2 представляет собой разницу средневзвешенной температуры элюирования (Tw) для первой половины кривой TREF и Tw для второй половины кривой TREF.
2. Полимер по п.1, содержащий полимерную цепочку, полученную с помощью каталитической системы, содержащей бис(н-пропилциклопентадиенил)гафний(СН3)2.
3. Полимер по п.1, содержащий полимерную цепочку, полученную с помощью каталитической системы, содержащей бис(н-бутил,метилциклопентадиенил)цирконий(СН3)2.
4. Полимер по п.1, содержащий полимерную цепочку, полученную с помощью каталитической системы, содержащей бис(1-этилинденил)цирконий(СН3)2.
5. Полимер по п.1, содержащий полимерную цепочку, полученную с помощью каталитической системы, содержащей любое из соединений, представленных приведенными ниже формулами:
в которых каждый заместитель R1 и R2 независимо представляет собой метил, хлор, фтор или гидрокарбильную группу.
6. Полимер по п.1, содержащий полимерные цепочки, полученные с помощью каталитической системы, содержащей бис(н-пропилциклопентадиенил)гафний(СН3)2 и бис(1-этилинденил)цирконий-(СН3)2.
7. Полимер по п.1, содержащий полимерные цепочки, полученные с помощью каталитической системы, содержащей бис(н-пропилциклопентадиенил)гафний(СН3)2 и мезо-O(SiMe2Ind)2ZrMe2.
8. Полимер по п.1, содержащий полимерные цепочки, полученные с помощью каталитической системы, содержащей соединение, представленное одной из приведенных ниже формул:
CpACpBMXn или CpA(A)CpBMXn,
где М представляет собой атом группы 4, 5 или 6; СрА и СрВ каждый связан с М и независимо выбран из группы, включающей циклопентадиенильные лиганды, замещенные циклопентадиенильные лиганды, лиганды, изолобальные циклопентадиенилу, и замещенные лиганды, изолобальные циклопентадиенилу; (А) представляет собой двухвалентную мостиковую группу, связанную как с СрА, так и с СрB, выбранную из группы, включающей двухвалентные С1-С20-гидрокарбилы и содержащие гетероатом С1-С20-гидрокарбилы, где содержащие гетероатом гидрокарбилы содержат от одного до трех гетероатомов; Х представляет собой уходящую группу, выбранную из группы, включающей хлорид-ионы, бромид-ионы, С1-С10-алкилы и С2-С12-алкенилы, карбоксилаты, ацетилацетонаты и алкоксиды; и n представляет собой целое число от 1 до 3.
9. Полимер по п.1, содержащий полимерные цепочки, полученные с помощью каталитической системы, содержащей, по меньшей мере, два совместно нанесенных на подложку катализатора.
10. Полимер по п.1, имеющий отношение полимера, полученного с помощью первого катализатора, к полимеру, полученному с помощью второго катализатора, приблизительно от 2:1 до 5:1.
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