摘要:
A polyethylene composition comprising at least a first composition and a second composition in amounts of at least 70 wt% of the first composition which comprises at least: (A) up to 60 wt% lower molecular weight (LMW) polyethylene homo or copolymer obtained by Ziegler-Natta catalysis having a density of at least 940 kg/m3; and (B) up to 60 wt% higher molecular weight (HMW) polyethylene homo or copolymer obtained by Ziegler-Natta catalysis and having lower density than component (A); and up to 30 wt% of the second composition which comprises at least: (C) a polyethylene homo or copolymer obtained by single site catalysis (SSC) and having a density of up to 980 kg/m3, wherein said polyethylene composition has a density at least of 925 kg/m3.
摘要翻译:包含至少第一组合物和第二组合物的聚乙烯组合物,其量为第一组合物的至少70重量%,其至少包含:(A)至多60重量%的低分子量(LMW)聚乙烯均聚物或共聚物,其通过 具有至少940kg / m 3密度的齐格勒 - 纳塔催化剂; 和(B)通过齐格勒 - 纳塔催化剂获得且密度低于组分(A)的高达60重量%的高分子量(HMW)聚乙烯均聚物或共聚物; 和至多30重量%的第二组合物,其至少包含:(C)通过单活性中心催化(SSC)获得并且密度高达980kg / m 3的聚乙烯均聚物或共聚物,其中所述聚乙烯组合物的密度 至少925公斤/立方米。
摘要:
The present invention relates to a polyethylene composition wherein (i) the composition has an MFR2 of 0.05 to 100 g/10min, (ii) the environmental stress crack resistance ESCR measured according to the FNCT at 12 MPa and 230C in hours and the E-modulus EM measured according to ISO 527-2: 1993 satisfy the following relation: ESCR > - 0.244 EM h/MPa + 416 h (I).
摘要:
A polyethylene composition comprising at least a first composition and a second composition in amounts of at least 70 wt% of the first composition which comprises at least: (A) up to 60 wt% lower molecular weight (LMW) polyethylene homo or copolymer obtained by Ziegler-Natta catalysis having a density of at least 940 kg/m3; and (B) up to 60 wt% higher molecular weight (HMW) polyethylene homo or copolymer obtained by Ziegler-Natta catalysis and having lower density than component (A); and up to 30 wt% of the second composition which comprises at least: (C) a polyethylene homo or copolymer obtained by single site catalysis (SSC) and having a density of up to 980 kg/m3, wherein said polyethylene composition has a density at least of 925 kg/m3.
摘要:
A multimodal medium density polyethylene polymer obtainable using single site catalysis which comprises at least: (A) a lower molecular weight (LMW) component which is a copolymer of ethylene with at least one comonomer, and (B) a higher molecular weight (HMW) component which is a copolymer of ethylene with at least one comonomer; wherein said multimodal medium density polyethylene polymer has a density of more than 925 kg/m3; and the ratio between the comonomer content in mol-% present in LMW component (A) and the total comonomer content in mol-% present in the multimodal medium density polyethylene polymer is more than 0.3.
摘要:
A polyethylene composition comprising at least a first composition and a second composition in amounts of at least 70 wt% of the first composition which comprises at least: (A) up to 60 wt% lower molecular weight (LMW) polyethylene homo or copolymer obtained by Ziegler-Natta catalysis having a density of at least 940 kg/m3; and (B) up to 60 wt% higher molecular weight (HMW) polyethylene homo or copolymer obtained by Ziegler-Natta catalysis and having lower density than component (A); and up to 30 wt% of the second composition which comprises: (C) a polyethylene homo or copolymer obtained by single site catalysis (SSC) and having a density of up to 980 kg/m3; wherein said polyethylene composition has a charpy impact strength at -20°C, according to ISO 179-3 on compression moulded plates of at least 2.5 kJ/m2 and density at least 925 kg/m3.
摘要翻译:包含至少第一组合物和第二组合物的聚乙烯组合物,其量为第一组合物的至少70重量%,其至少包含:(A)至多60重量%的低分子量(LMW)聚乙烯均聚物或共聚物,其通过 具有至少940kg / m 3密度的齐格勒 - 纳塔催化剂; 和(B)通过齐格勒 - 纳塔催化剂获得且密度低于组分(A)的高达60重量%的高分子量(HMW)聚乙烯均聚物或共聚物; 和至多30重量%的第二组合物,其包含:(C)通过单中心催化(SSC)获得并且密度高达980kg / m 3的聚乙烯均聚物或共聚物; 其中所述聚乙烯组合物在-20℃下根据ISO 179-3在压模板上具有至少2.5kJ / m 2和至少925kg / m 3密度的夏比冲击强度。
摘要:
Use of first polyethylene polymer having a density of at least 950 kg/m3 as a nucleating agent for a second polyethylene polymer having a density of less than 940 kg/m3.
摘要翻译:使用密度至少为950kg / m 3的第一聚乙烯聚合物作为密度小于940kg / m 3的第二聚乙烯聚合物的成核剂。
摘要:
A multimodal medium density polyethylene polymer obtainable using single site catalysis which comprises at least: (A) a lower molecular weight (LMW) component which is a copolymer of ethylene with at least one comonomer, and (B) a higher molecular weight (HMW) component which is a copolymer of ethylene with at least one comonomer; wherein said multimodal medium density polyethylene polymer has a density of more than 925 kg/m3; and the ratio between the comonomer content in mol-% present in LMW component (A) and the total comonomer content in mol-% present in the multimodal medium density polyethylene polymer is more than 0.3.
摘要:
A polyethylene composition comprising at least a first composition and a second composition in amounts of at least 70 wt% of the first composition which comprises at least: (A) up to 60 wt% lower molecular weight (LMW) polyethylene homo or copolymer obtained by Ziegler-Natta catalysis having a density of at least 940 kg/m3; and (B) up to 60 wt% higher molecular weight (HMW) polyethylene homo or copolymer obtained by Ziegler-Natta catalysis and having lower density than component (A); and up to 30 wt% of the second composition which comprises: (C) a polyethylene homo or copolymer obtained by single site catalysis (SSC) and having a density of up to 980 kg/m3; wherein said polyethylene composition has a charpy impact strength at -20°C, according to ISO 179-3 on compression moulded plates of at least 2.5 kJ/m2 and density at least 925 kg/m3.
摘要:
The present invention relates to a polyethylene composition wherein (i) the composition has an MFR2 of 0.05 to 100 g/10min, (ii) the environmental stress crack resistance ESCR measured according to the FNCT at 12 MPa and 230C in hours and the E-modulus EM measured according to ISO 527-2: 1993 satisfy the following relation: ESCR > - 0.244 EM h/MPa + 416 h (I).