RU98108397A - POLYOLEPHINE COMPOSITIONS WITHOUT STITCHING - Google Patents

POLYOLEPHINE COMPOSITIONS WITHOUT STITCHING

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Publication number
RU98108397A
RU98108397A RU98108397/04A RU98108397A RU98108397A RU 98108397 A RU98108397 A RU 98108397A RU 98108397/04 A RU98108397/04 A RU 98108397/04A RU 98108397 A RU98108397 A RU 98108397A RU 98108397 A RU98108397 A RU 98108397A
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composition
composition according
molecular weight
ethylene
polymer
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RU98108397/04A
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Russian (ru)
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RU2173324C2 (en
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Пенфолд Джон
Ф.Фанише Лайн
А.Уилсон Крэйг
Х.Кри Стефен
А. Де Врис Сйорд
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Дзе Дау Кемикал Компани
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Priority claimed from US08/538,689 external-priority patent/US5795941A/en
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Claims (23)

1. Полиолефиновая композиция, содержащая два или более компонентов олефиновых полимеров, причем эта композиция удовлетворяет следующим условиям:
Mn1/Mn2 > 7,0; Mn2 > 3000 и
0,7 ≥ A1/(A1 + A2) ≥ 0,15
где A1, A2, Mn1 и Mn2 являются производными молекулярно-массового распределения композиции, полученного методом гель-проникающей хроматографии путем развертки относительного ответа (RR) в зависимости от молекулярной массы (MW) для того, чтобы RR и MW удовлетворяли следующей зависимости, которая представляет собой взвешенную сумму двух функций логарифмически нормального распределения:
Figure 00000001

с использованием методики нелинейной регрессии для получения параметров A1, A2, μ1, μ2, σ1 и σ2, в которых MW представляет собой значение молекулярной массы по данным гель-проникающей хроматографии (ГПХ); RR - это относительный ответ, который для набора индивидуальных данных RR/MW представляет собой: RR[i] = Нормализованная высота [i] / (log (MW[i - 1]) - log (MW[i])),
где Нормализованная высота [i] является выходным сигналом ГПХ для соответствующей фракции MW[i];
μ1 и σ 2 1 представляют собой среднее и стандартное отклонение первого логарифмического нормального распределения;
μ2 и σ 2 2 представляют собой среднее и стандартное отклонение второго логарифмического нормального распределения;
A1 + A2 = 1 и 0 < A1 < 1;
Mn1= 10μ1exp(-0,5(ln(10)×σ1)2) и
Mn2= 10μ2exp(-0,5(ln(10)×σ2)2);
и полиолефиновая композиция имеет суммарную плотность менее 0,907 г/см3.1. Polyolefin composition containing two or more components of olefin polymers, and this composition satisfies the following conditions:
M n1 / M n2 >7.0; M n2 > 3000 and
0.7 ≥ A 1 / (A 1 + A 2 ) ≥ 0.15
where A 1 , A 2 , M n1 and M n2 are derivatives of the molecular weight distribution of the composition obtained by gel permeation chromatography by sweeping the relative response (RR) depending on the molecular weight (MW) so that RR and MW satisfy the following dependence, which is a weighted sum of two functions of a lognormal distribution:
Figure 00000001

using non-linear regression techniques to obtain the parameters A 1 , A 2 , μ 1 , μ 2 , σ 1 and σ 2 , in which MW is the molecular weight value according to gel permeation chromatography (GPC); RR is a relative answer, which for a set of individual data, RR / MW is: RR [i] = Normalized height [i] / (log (MW [i - 1]) - log (MW [i])),
where Normalized height [i] is the GPC output for the corresponding MW [i] fraction;
μ 1 and σ 2 1 represent the mean and standard deviation of the first logarithmic normal distribution;
μ 2 and σ 2 2 represent the mean and standard deviation of the second logarithmic normal distribution;
A 1 + A 2 = 1 and 0 <A 1 <1;
M n1 = 10 μ1 exp (-0.5 (ln (10) × σ 1 ) 2 ) and
M n2 = 10 μ2 exp (-0.5 (ln (10) × σ 2 ) 2 );
and the polyolefin composition has a total density of less than 0.907 g / cm 3 . 2. Композиция по п.1, имеющая суммарную плотность менее 0,900 г/см3.2. The composition according to claim 1, having a total density of less than 0.900 g / cm 3 . 3. Композиция по п.1 или 2, в которой Mn2 больше 4000.3. The composition according to claim 1 or 2, in which M n2 is greater than 4000. 4. Композиция по любому из пп.1 - 3, в которой отношение A1/(A1 + A2) равно или меньше 0,65.4. The composition according to any one of claims 1 to 3, in which the ratio A 1 / (A 1 + A 2 ) is equal to or less than 0.65. 5. Композиция по любому из пп.1 - 4, в которой отношение A1/(A1 + A2) равно или больше 0,2.5. The composition according to any one of claims 1 to 4, in which the ratio A 1 / (A 1 + A 2 ) is equal to or greater than 0.2. 6. Композиция по любому из пп.1 - 5, содержащая два полимерных компонента этилена. 6. The composition according to any one of claims 1 to 5, containing two polymer ethylene components. 7. Композиция по п.6, в которой оба полимерных компонента этилена выбирают из существенно линейных полимеров этилена. 7. The composition according to claim 6, in which both polymer ethylene components are selected from substantially linear ethylene polymers. 8. Композиция по п.7, в которой существенно линейные полимеры этилена включают сомономеры этилена и альфа-олефина, имеющие 4 - 10 атомов углерода. 8. The composition according to claim 7, in which substantially linear ethylene polymers include comonomers of ethylene and alpha-olefin having 4 to 10 carbon atoms. 9. Композиция по п.8, в которой каждый из существенно линейных полимеров этилена имеет молекулярно-массовое распределение (Mw/Mn), определяемое формулой:
(Mw/Mn ≅ (I10/I2) - 4,63,
где отношение индексов течения расплава (I10/I2) равно или больше 5,63.9. The composition of claim 8, in which each of the substantially linear ethylene polymers has a molecular weight distribution (M w / M n ) defined by the formula:
(M w / M n ≅ (I 10 / I 2 ) - 4.63,
where the ratio of the melt flow indices (I 10 / I 2 ) is equal to or greater than 5.63. 10. Композиция по п.7, обладающая плотностью в интервале от 0,85 до 0,90 г/см3.10. The composition according to claim 7, having a density in the range from 0.85 to 0.90 g / cm 3 . 11. Сшиваемая композиция по п.1, которая дополнительно содержит сшивающий агент, активатор, промотор или ускоритель. 11. The crosslinkable composition according to claim 1, which further comprises a crosslinking agent, activator, promoter or accelerator. 12. Композиция по п.11, в которой сшивающим агентом является ненасыщенный силан, привитый к композиции. 12. The composition according to claim 11, in which the crosslinking agent is an unsaturated silane grafted to the composition. 13. Композиция по п.12, в которой ненасыщенный силан представлен формулой
Figure 00000002

в которой R' представляет собой атом водорода или метильную группу; x и y являются нулем или 1, при условии, что когда x равно 1, y = 1; n - это целое число от 1 до 12, включая, предпочтительно, от 1 до 4; и каждый R независимо представляет собой гидролизуемую органическую группу, такую как алкокси-группа, имеющая 1 - 12 атомов углерода, арилокси-группа, аралокси-группа, алифатическая ацилокси-группа, имеющая от 1 до 12 атомов углерода, оксимо- или замещенная амино-группа, или низшая алкильная группа, имеющая 1 - 6 атомов углерода включительно, при условии, что не более чем три группы R являются алкилами.13. The composition according to item 12, in which the unsaturated silane is represented by the formula
Figure 00000002

in which R 'represents a hydrogen atom or a methyl group; x and y are zero or 1, provided that when x is 1, y = 1; n is an integer from 1 to 12, including, preferably, from 1 to 4; and each R independently represents a hydrolyzable organic group, such as an alkoxy group having 1 to 12 carbon atoms, an aryloxy group, an araloxy group, an aliphatic acyloxy group having from 1 to 12 carbon atoms, an oxy or substituted amino a group or lower alkyl group having 1 to 6 carbon atoms inclusive, provided that no more than three R groups are alkyl. 14. Композиция по п.11, в которой Mn2 больше 4000 и A1/(A1 + A2) равно или больше 0,2 и равно или меньше 0,65.14. The composition according to claim 11, in which M n2 is greater than 4000 and A 1 / (A 1 + A 2 ) is equal to or greater than 0.2 and equal to or less than 0.65. 15. Изделие, включающее сшитую полиолефиновую композицию, получаемую отверждением композиции по п.11. 15. An article comprising a crosslinked polyolefin composition obtained by curing the composition of claim 11. 16. Изделие, включающее сшитую полиолефиновую композицию, получаемую отверждением композиции по п.14. 16. An article comprising a crosslinked polyolefin composition obtained by curing the composition of claim 14. 17. Способ получения полиолефиновой композиции, который включает a) приготовление первого олефинового полимера и второго олефинового полимера; b) смешивание первого и второго олефиновых полимеров таким образом, чтобы первый и второй олефиновые полимеры перемешались гомогенно с образованием полиолефиновой композиции, которая удовлетворяет следующим условиям:
Mn1/Mn2 > 7,0; Mn2 > 3000 и
0,7 ≥ A1/(A1 + A2) ≥ 0,15
где A1, A2, Mn1 и Mn2 являются производными молекулярно-массового распределения композиции, полученного методом гель-проникающей хроматографии путем развертки относительного ответа (RR) в зависимости от молекулярной массы (MW) для того, чтобы RR и MW удовлетворяли следующей зависимости, которая представляет собой взвешенную сумму двух функций логарифмически нормального распределения:
Figure 00000003

с использованием методики нелинейной регрессии для получения параметров A1, A2, μ1, μ2, σ1 и σ2, в которых MW представляет собой значение молекулярного веса по данным гель-проникающей хроматографии (ГПХ); RR - это относительный ответ, который для набора индивидуальных данных RR/MW представляет собой: RR[i] = Нормализованная высота [i] / (log (MW[i - 1]) - log (MW[i])), где Нормализованная высота [i] является выходным сигналом ГПХ для соответствующей фракции MW[i]; μ1 и σ 2 1 представляют собой среднее и стандартное отклонение первого логарифмического нормального распределения; μ2 и σ 2 2 представляют собой среднее и стандартное отклонение второго логарифмического нормального распределения;
A1 + A2 = 1 и 0 < A1 < 1;
Mn1= 10μ1exp(-0,5(ln(10)×σ1)2) и
Mn2= 10μ2exp(-0,5(ln(10)×σ2)2);
и полиолефиновая композиция имеет суммарную плотность менее 0,907 г/см3.17. A method for producing a polyolefin composition, which comprises a) preparing a first olefin polymer and a second olefin polymer; b) mixing the first and second olefin polymers so that the first and second olefin polymers are mixed homogeneously to form a polyolefin composition that satisfies the following conditions:
M n1 / M n2 >7.0; M n2 > 3000 and
0.7 ≥ A 1 / (A 1 + A 2 ) ≥ 0.15
where A 1 , A 2 , M n1 and M n2 are derivatives of the molecular weight distribution of the composition obtained by gel permeation chromatography by sweeping the relative response (RR) depending on the molecular weight (MW) so that RR and MW satisfy the following dependence, which is a weighted sum of two functions of a lognormal distribution:
Figure 00000003

using non-linear regression techniques to obtain the parameters A 1 , A 2 , μ 1 , μ 2 , σ 1 and σ 2 , in which MW is the molecular weight value according to gel permeation chromatography (GPC); RR is the relative answer, which for a set of individual data, RR / MW is: RR [i] = Normalized height [i] / (log (MW [i - 1]) - log (MW [i])), where Normalized height [i] is the GPC output for the corresponding MW [i] fraction; μ 1 and σ 2 1 represent the mean and standard deviation of the first logarithmic normal distribution; μ 2 and σ 2 2 represent the mean and standard deviation of the second logarithmic normal distribution;
A 1 + A 2 = 1 and 0 <A 1 <1;
M n1 = 10 μ1 exp (-0.5 (ln (10) × σ 1 ) 2 ) and
M n2 = 10 μ2 exp (-0.5 (ln (10) × σ 2 ) 2 );
and the polyolefin composition has a total density of less than 0.907 g / cm 3 . 18. Способ по п.17, в котором первый олефиновый полимер является этиленовым полимером, полученным в первом реакторе, а второй олефиновый полимер является этиленовым полимером, полученным во втором реакторе. 18. The method according to 17, in which the first olefin polymer is an ethylene polymer obtained in the first reactor, and the second olefin polymer is an ethylene polymer obtained in the second reactor. 19. Способ по п.18, в котором первый этиленовый полимер, полученный в первом реакторе, переносят во второй реактор, в котором второй олефиновый полимер получают в присутствии первого этиленового полимера. 19. The method according to p. 18, in which the first ethylene polymer obtained in the first reactor is transferred to a second reactor, in which the second olefin polymer is obtained in the presence of the first ethylene polymer. 20. Способ по п.18 или 19, который проводят в суспензионной фазе, в фазе раствора или в газовой фазе. 20. The method according to p. 18 or 19, which is carried out in the suspension phase, in the solution phase or in the gas phase. 21. Способ по любому из пп.17 - 20, в котором в композицию дополнительно добавляют сшивающий агент. 21. The method according to any one of paragraphs.17 to 20, in which a crosslinking agent is additionally added to the composition. 22. Способ сшивания сшиваемой композиции по п.11, который включает добавление сшивающего агента в композицию. 22. The method of crosslinking a crosslinkable composition according to claim 11, which comprises adding a crosslinking agent to the composition. 23. Способ по п. 22, в котором сшиваемую композицию подвергают воздействию условий сшивания в ходе стадии переработки композиции в изделие или после нее. 23. The method according to p. 22, in which the stitched composition is subjected to crosslinking conditions during the stage of processing the composition into the product or after it.
RU98108397/04A 1995-10-03 1996-10-02 Polyolefin compositions capable of being cross linked RU2173324C2 (en)

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US08/538,689 US5795941A (en) 1995-10-03 1995-10-03 Crosslinkable bimodal polyolefin compositions
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