公开(公告)号：WO2003076509A1

公开(公告)日：2003-09-18

申请号：PCT/IB2003/000835

申请日：2003-03-06

Applicant: BASELL POLIOLEFINE ITALIA S.P.A.

Inventor： GLOGOVSKY, Todd ,  BUTALA, Robert, G. ,  HAN, Choong, Y. ,  ENNIS, Gerald, John ,  GOBERTI, Paolo

IPC: C08L23/10

CPC classification number: C08L23/16 ,  C08L23/10 ,  C08L23/142 ,  C08L2308/00 ,  C08L2666/06

Abstract: A polyolefin composition suitable for preparing single ply roofing membranes, comprising: (A) from about 15 to 40% by weight of a crystalline copolymer of propylene with at least one alpha-olefin of formula H 2 C=CHR 1 , where R 1 is H or a C 2-8 linear or branched alkyl, containing at least about 90% by weight of propylene, having solubility in xylene at room temperature lower than about 15% by weight; (B) from about 60 to about 85% by weight of an elastomeric fraction comprising: (1) a copolymer of propylene with ethylene containing about 20 to about 35% by weight ethylene, and having solubility in xylene at room temperature greater than about 70% by weight, the intrinsic viscosity of the xylene soluble fraction being higher than about 3.0dl/g; and (2) a copolymer of ethylene with at least one alpha-olefin of formula H 2 C=CHR 2 , where R 2 is a C 2-8 linear or branched alkyl, containing about 15% to 40% by weight alpha-olefin, and having solubility in xylene at room temperature greater than about 25% by weight, the intrinsic viscosity of the xylene soluble fraction ranging from about 0.5 to about 5.0dl/g; the (1) (2) weight ratio ranging from about 1:5 to about 5:1. The polyolefin composition of the invention, preferably prepared by sequential polymerization in at least three stages, has tensile strength at break ≥ 25 Mpa, elongation at break ≥ 700 Mpa and toughness ≥ 150 Mpa.

Abstract translation: 一种适于制备单层屋顶膜的聚烯烃组合物，其包含：A约15至40重量％的丙烯与至少一种式IIC = CHR1的α-烯烃的结晶共聚物，其中R 1为H或C 2-8 含有至少约90重量％丙烯的直链或支链烷基，其在室温下在二甲苯中的溶解度低于约15重量％B，约60至约85重量％的弹性体级分包括：1 丙烯与含有约20至约35重量％乙烯的乙烯，并且在室温下在二甲苯中的溶解度大于约70重量％，二甲苯可溶部分的特性粘度高于约3.0dl / g，2共聚物 的乙烯与至少一种式H2C = CHR2的α-烯烃，其中R2是C2-8直链或支链烷基，含有约15％至40％（重量）的α-烯烃，并且在室温下在二甲苯中的溶解度大于 约25％ 重量，二甲苯可溶部分的特性粘度范围为约0.5至约5.0dl / g，重量比为约1:5至约5:1。 本发明的聚烯烃组合物优选通过至少三个阶段的顺序聚合制备，断裂强度> 25Mpa，断裂伸长率> 700Mpa，韧性> 150Mpa。

公开(公告)号：EP1483324A1

公开(公告)日：2004-12-08

申请号：EP03704900.4

申请日：2003-03-06

Applicant: Basell Poliolefine Italia S.p.A.

Inventor： GLOGOVSKY, Todd ,  BUTALA, Robert, G. ,  HAN, Choong, Y. ,  ENNIS, Gerald, John ,  GOBERTI, Paolo

IPC: C08L23/10 ,  C08L23/04 ,  C08L23/16

CPC classification number: C08L23/16 ,  C08L23/10 ,  C08L23/142 ,  C08L2308/00 ,  C08L2666/06

Abstract: A polyolefin composition suitable for preparing single ply roofing membranes, comprising: (A) from about 15 to 40% by weight of a crystalline copolymer of propylene with at least one alpha-olefin of formula H2C=CHR1, where R1 is H or a C2-8 linear or branched alkyl, containing at least about 90% by weight of propylene, having solubility in xylene at room temperature lower than about 15% by weight; (B) from about 60 to about 85% by weight of an elastomeric fraction comprising: (1) a copolymer of propylene with ethylene containing about 20 to about 35% by weight ethylene, and having solubility in xylene at room temperature greater than about 70% by weight, the intrinsic viscosity of the xylene soluble fraction being higher than about 3.0dl/g; and (2) a copolymer of ethylene with at least one alpha-olefin of formula H2C=CHR2, where R2 is a C2-8 linear or branched alkyl, containing about 15% to 40% by weight alpha-olefin, and having solubility in xylene at room temperature greater than about 25% by weight, the intrinsic viscosity of the xylene soluble fraction ranging from about 0.5 to about 5.0dl/g; the (1) (2) weight ratio ranging from about 1:5 to about 5:1. The polyolefin composition of the invention, preferably prepared by sequential polymerization in at least three stages, has tensile strength at break ≥ 25 Mpa, elongation at break ≥ 700 Mpa and toughness ≥ 150 Mpa.