公开(公告)号：US20050187352A1

公开(公告)日：2005-08-25

申请号：US11113748

申请日：2005-04-25

Applicant: Pak-Wing Chum ,  Kurt Swogger ,  Thomas Oswald ,  Pradeep Jain

Inventor： Pak-Wing Chum ,  Kurt Swogger ,  Thomas Oswald ,  Pradeep Jain

IPC: C08F210/16 ,  C08J5/18 ,  C08L23/04 ,  C08L23/08 ,  C08L23/00

CPC classification number: C08L23/0815 ,  C08F210/16 ,  C08J5/18 ,  C08J2323/08 ,  C08L23/04 ,  C08L2205/02 ,  C08L2314/06 ,  Y10T428/1334 ,  Y10T428/1345 ,  Y10T428/2913 ,  Y10T428/2929 ,  Y10T428/31913 ,  C08L2666/04 ,  C08F210/14 ,  C08F2500/03 ,  C08F2500/09 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/26

Abstract: Polymer blends are disclosed that include from about 5 percent (by weight of the total composition) to about 95 percent (by weight of the total composition) of at least one first ethylene interpolymer having at least one first comonomer, and from about 95 percent (by weight of the total composition) to about 5 percent (by weight of the total composition) of at least one second ethylene interpolymer having at least one second comonomer. In the disclosed blends, the first comonomer is different from the second comonomer and the melt index (I2) of the first ethylene interpolymer is less than or equal to the melt index (I2) of the second ethylene interpolymer. The blend are also characterized as having a density of greater than or equal to 0.90 g/cc. Articles made from such blends are also disclosed.

Abstract translation: 公开了包含约5％（总组合物重量）至约95％（按总组合物的重量计）的至少一种具有至少一种第一共聚单体的至少一种第一乙烯互聚物和约95％（ 的总组合物的重量）至约5％（总组合物的重量）至少一种具有至少一种第二共聚单体的第二乙烯互聚物。 在所公开的共混物中，第一共聚单体不同于第二共聚单体，并且第一乙烯互聚物的熔体指数（I 2/2）小于或等于熔融指数（I 2 / SUB>）。 共混物的特征还在于具有大于或等于0.90g / cc的密度。 还公开了由这种共混物制成的制品。

公开(公告)号：US20080125547A1

公开(公告)日：2008-05-29

申请号：US11816970

申请日：2006-03-03

Applicant: Kurt Swogger ,  Pak-Wing S. Chum ,  Thomas Oswald ,  Stephane Costeux

Inventor： Kurt Swogger ,  Pak-Wing S. Chum ,  Thomas Oswald ,  Stephane Costeux

IPC: C08L23/00

CPC classification number: C08L23/04 ,  C08L2205/02 ,  C08L2666/06 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/04 ,  C08F2500/11 ,  C08F2500/12

Abstract: Ethylene polymer compositions comprising a high molecular weight high density polyethylene resin and a low density polyethylene resin are disclosed, where the polymer composition has a comparatively high melt strength for a given melt index. The compositions comprise from 25 to 99 percent by weight of the composition of a linear or substantially linear polyethylene polymer having a density of at least about 0.90 g/cc, and an I21 of less than about 20; and from 1 to 25 percent by weight of the composition of a high pressure low density type polyethylene resin having a melt index (I2) less than about 5, a molecular weight distribution greater than about 10, a Mw_abs/Mw_gpc ratio (“Gr”) of at least 2.7, and a melt strength at 190° C. greater than 19.0−12.6*log10(Mi). The compositions of the present invention are particularly well suited for blown film and thermoforming applications.

Abstract translation: 公开了包含高分子量高密度聚乙烯树脂和低密度聚乙烯树脂的乙烯聚合物组合物，其中聚合物组合物对于给定的熔体指数具有相对较高的熔体强度。 该组合物包含25至99重量％的组合物，其密度为至少约0.90g / cc，I21小于约20的直链或基本上线性的聚乙烯聚合物; 和组合物的1至25重量％的熔体指数（I 2）小于约5，分子量分布大于约10，Mw_abs / Mw_gpc比（“Gr”）的高压低密度型聚乙烯树脂， ）至少为2.7，熔体强度为190℃，大于19.0-12.6 * log10（Mi）。 本发明的组合物特别适用于吹塑薄膜和热成型应用。