公开(公告)号：US09068030B2

公开(公告)日：2015-06-30

申请号：US13574435

申请日：2011-01-21

申请人： Wenbo Song ,  Meifang Guo ,  Shijun Zhang ,  Wenjun Wei ,  Honghong Huang ,  Luqiang Yu ,  Tao Liu ,  Huijie Hu ,  Huan Xu ,  Peiqian Yu ,  Xiaomeng Zhang

发明人： Wenbo Song ,  Meifang Guo ,  Shijun Zhang ,  Wenjun Wei ,  Honghong Huang ,  Luqiang Yu ,  Tao Liu ,  Huijie Hu ,  Huan Xu ,  Peiqian Yu ,  Xiaomeng Zhang

IPC分类号： C08F4/16 ,  C08F4/58 ,  C08F2/38 ,  C08F110/06

CPC分类号： C08F110/06 ,  C08F2/001 ,  C08F2500/01 ,  C08F2500/04 ,  C08F2500/11 ,  C08F2500/12 ,  C08F4/6465 ,  C08F4/6492

摘要： The present invention provides a process for preparing high melt strength propylene polymer by direct polymerization, comprising that a propylene polymer with wide molecular weight distribution and containing “very high molecular weight fraction” can be prepared by controlling the species and ratios of the external electron donors in the Ziegler-Natta catalyst system at different reaction stages according to the requirement for different molecular weight fractions in the different propylene polymerization stage of the series operation, and said polymer has excellent mechanical properties, especially with very high melt strength. The present invention also provides a propylene homopolymer with high melt strength, comprising the following features: (1) the MFR is 0.2-10 g/10 min at 230° C. with a load of 2.16 kg; (2) the molecular weight distribution Mw/Mn is 6-20; (3) the content of the fraction with a molecular weight higher than 5,000,000 is higher than or equal to 0.8 wt %; (4) Mz+1/Mn is higher than or equal to 70. Said homopolymer can be used in the preparation of foam products, thermoforming products, biaxial stretching films, blown films and blow-molded products.

摘要翻译： 本发明提供了一种通过直接聚合制备高熔体强度丙烯聚合物的方法，包括具有宽分子量分布并含有“非常高分子量级分”的丙烯聚合物可以通过控制外部电子给体的种类和比例 在不同反应阶段的齐格勒 - 纳塔催化剂体系中，根据在不同的丙烯聚合反应阶段对不同分子量馏分的要求，所述聚合物具有优异的机械性能，特别是具有非常高的熔体强度。 本发明还提供具有高熔体强度的丙烯均聚物，其特征在于：（1）在230℃，2.16kg负荷下，MFR为0.2-10g / 10min; （2）分子量分布Mw / Mn为6〜20; （3）分子量高于5,000,000的级分的含量高于或等于0.8wt％; （4）Mz + 1 / Mn大于或等于70.所述均聚物可用于制备泡沫产品，热成型产品，双轴拉伸膜，吹塑薄膜和吹塑产品。

公开(公告)号：US20130023598A1

公开(公告)日：2013-01-24

申请号：US13574435

申请日：2011-01-21

申请人： Wenbo Song ,  Meifang Guo ,  Shijun Zhang ,  Wenjun Wei ,  Honghong Huang ,  Luqiang Yu ,  Tao Liu ,  Huijie Hu ,  Huan Xu ,  Peiqian Yu ,  Xiaomeng Zhang

发明人： Wenbo Song ,  Meifang Guo ,  Shijun Zhang ,  Wenjun Wei ,  Honghong Huang ,  Luqiang Yu ,  Tao Liu ,  Huijie Hu ,  Huan Xu ,  Peiqian Yu ,  Xiaomeng Zhang

IPC分类号： C08F2/01 ,  C08F110/06

CPC分类号： C08F110/06 ,  C08F2/001 ,  C08F2500/01 ,  C08F2500/04 ,  C08F2500/11 ,  C08F2500/12 ,  C08F4/6465 ,  C08F4/6492

摘要： The present invention provides a process for preparing high melt strength propylene polymer by direct polymerization, comprising that a propylene polymer with wide molecular weight distribution and containing “very high molecular weight fraction” can be prepared by controlling the species and ratios of the external electron donors in the Ziegler-Natta catalyst system at different reaction stages according to the requirment for different molecular weight fractions in the different propylene polymerization stage of the series operation, and said polymer has excellent mechnical properties, especially with very high melt strength. The present invention also provides a propylene homopolymer with high melt strength, comprising the following features: (1) the MFR is 0.2-10 g/10 min at 230° C. with a load of 2.16 kg; (2) the molecular weight distribution Mw/Mn is 6-20; (3) the content of the fraction with a molecular weight higher than 5,000,000 is higher than or equal to 0.8 wt %; (4) Mz+1/Mn is higher than or equal to 70. Said homopolymer can be used in the preparation of foam products, thermoforming products, biaxial stretching films, blown films and blow-molded products.

摘要翻译： 本发明提供了一种通过直接聚合制备高熔体强度丙烯聚合物的方法，包括具有宽分子量分布且含有非常高分子量级分的丙烯聚合物可以通过控制外部电子给体的种类和比例来制备 齐格勒 - 纳塔催化剂体系在不同反应阶段根据不同分子量馏分在不同丙烯聚合反应阶段的操作要求，所述聚合物具有优异的机械性能，特别是具有非常高的熔体强度。 本发明还提供具有高熔体强度的丙烯均聚物，其特征在于：（1）在230℃，2.16kg负荷下，MFR为0.2-10g / 10min; （2）分子量分布Mw / Mn为6〜20; （3）分子量高于5,000,000的级分的含量高于或等于0.8wt％; （4）Mz + 1 / Mn大于或等于70.所述均聚物可用于制备泡沫产品，热成型产品，双轴拉伸膜，吹塑薄膜和吹塑产品。