公开(公告)号：US5773129A

公开(公告)日：1998-06-30

申请号：US361311

申请日：1994-12-21

申请人： Kazuki Wakamatsu ,  Junichi Kimura ,  Makoto Satoh ,  Yoichi Obata ,  Minoru Takane

发明人： Kazuki Wakamatsu ,  Junichi Kimura ,  Makoto Satoh ,  Yoichi Obata ,  Minoru Takane

IPC分类号： B32B27/32 ,  C08F210/06 ,  C08L23/14 ,  B32B7/02 ,  B32B27/08

CPC分类号： B32B27/32 ,  C08F210/06 ,  C08L23/142 ,  C08L23/14 ,  Y10T428/2495 ,  Y10T428/26 ,  Y10T428/31855 ,  Y10T428/31909 ,  Y10T428/31938

摘要： A polypropylene laminated film containing a crystalline polypropylene layer and, laminated on at least one side of the layer of the crystalline polypropylene, a layer of a copolymer of propylene and at least one .alpha.-olefin of from 4 to 10 carbon atoms having a specific composition, melt flow rate and molecular weight distribution in which the .alpha.-olefin content in the cold xylene soluble portion of the random copolymer is less than 1.7 times the .alpha.-olefin content in the copolymer and the random copolymer satisfies the mathematical expression, B.ltoreq.1.05A-10, wherein A is a weight percentage of the content of said at least one .alpha.-olefin having from 4 to 10 carbon atoms in the random copolymer and B is a weight percentage of the cold xylene soluble portion in the random copolymer, is superior in low temperature heat sealability and hot tack property and moreover has a good transparency, blocking resistance and printability, wherein the random copolymer is obtained by gas phase polymerization substantially in the absence of a liquid medium, and using a catalyst system comprising (i) a solid catalyst component containing magnesium, titanium and a halogen as essential constituents, (ii) an organoaluminum compound and (iii) an electron donative compound.

摘要翻译： 一种聚丙烯层压膜，其含有结晶聚丙烯层，层压在该结晶聚丙烯层的至少一侧上，具有丙烯与至少一种具有特定组成的4-10个碳原子的至少一种α-烯烃的共聚物层 ，熔体流动速率和分子量分布，其中无规共聚物的冷二甲苯可溶部分中的α-烯烃含量小于共聚物中α-烯烃含量的1.7倍，无规共聚物满足数学表达式，B < = 1.05A-10，其中A是无规共聚物中所述至少一种具有4至10个碳原子的α-烯烃的含量的重量百分比，B是无规共聚物中冷二甲苯可溶部分的重量百分数 ，在低温热封性和热粘性方面优异，而且具有良好的透明性，耐粘连性和可印刷性，其中无规共聚物由气相 并且使用包含（i）含有镁，钛和卤素作为必要成分的固体催化剂组分的催化剂体系，（ii）有机铝化合物和（iii）给电子化合物。

公开(公告)号：US6001293A

公开(公告)日：1999-12-14

申请号：US041946

申请日：1998-03-13

申请人： Kazuki Wakamatsu ,  Junichi Kimura ,  Makoto Satoh ,  Yoichi Obata ,  Minoru Takane

发明人： Kazuki Wakamatsu ,  Junichi Kimura ,  Makoto Satoh ,  Yoichi Obata ,  Minoru Takane

IPC分类号： B32B27/32 ,  C08L23/14

CPC分类号： B32B27/32 ,  C08L23/14

摘要： A polypropylene laminated film containing a crystalline polypropylene layer and, laminated on at least one side of the layer of the crystalline polypropylene, a layer of a copolymer of propylene and at least one .alpha.-olefin of from 4 to 10 carbon atoms having a specific composition, melt flow rate and molecular weight distribution in which the .alpha.-olefin content in the cold xylene soluble portion of the random copolymer is less than 1.7 times the .alpha.-olefin content in the copolymer and the random copolymer satisfies the mathematical expression,B.ltoreq.1.05A-10,wherein A is a weight percentage of the content of said at least one .alpha.-olefin having from 4 to 10 carbon atoms in the random copolymer and B is a weight percentage of the cold xylene soluble portion in the random copolymer, is superior in low temperature heat sealability and hot tack property and moreover has a good transparency, blocking resistance and printability, wherein the random copolymer is obtained by gas phase polymerization substantially in the absence of a liquid medium, and using a catalyst system comprising (i) a solid catalyst component containing magnesium, titanium and a halogen as essential constituents, (ii) an organoaluminum compound and (iii) an electron donative compound.

摘要翻译： 一种聚丙烯层压膜，其含有结晶聚丙烯层，层压在该结晶聚丙烯层的至少一侧上，具有丙烯与至少一种具有特定组成的4-10个碳原子的至少一种α-烯烃的共聚物层 ，熔体流动速率和分子量分布，其中无规共聚物的冷二甲苯可溶部分中的α-烯烃含量小于共聚物中α-烯烃含量的1.7倍，无规共聚物满足数学表达式，B < = 1.05A-10，其中A是无规共聚物中所述至少一种具有4至10个碳原子的α-烯烃的含量的重量百分比，B是无规共聚物中冷二甲苯可溶部分的重量百分数 ，在低温热封性和热粘性方面优异，而且具有良好的透明性，耐粘连性和可印刷性，其中无规共聚物由气相 并且使用包含（i）含有镁，钛和卤素作为必要成分的固体催化剂组分的催化剂体系，（ii）有机铝化合物和（iii）给电子化合物。

公开(公告)号：US5635557A

公开(公告)日：1997-06-03

申请号：US361336

申请日：1994-12-21

申请人： Junichi Kimura ,  Minoru Takane ,  Yoichi Obata ,  Hiroyuki Tanimura

发明人： Junichi Kimura ,  Minoru Takane ,  Yoichi Obata ,  Hiroyuki Tanimura

IPC分类号： C08K3/36 ,  C08K5/00 ,  C08K9/00 ,  C08K3/34

CPC分类号： C08K5/0075 ,  C08K3/36 ,  C08K9/00

摘要： A polypropylene composition which contains a polypropylene and one or more ingredients selected from an antistatic agent and a surface-treated or untreated fine powdery silica gives a propylene stretched film having a well-balanced transparency, slip property and blocking resistance.

摘要翻译： 含有聚丙烯和一种或多种选自抗静电剂和表面处理或未处理的细粉末二氧化硅的成分的聚丙烯组合物得到具有良好平衡的透明性，滑爽性和抗粘连性的丙烯拉伸膜。

公开(公告)号：US5082908A

公开(公告)日：1992-01-21

申请号：US363654

申请日：1989-06-08

申请人： Akio Imai ,  Kiyoyuki Sugimori ,  Keisaku Yamamoto ,  Minoru Takane

发明人： Akio Imai ,  Kiyoyuki Sugimori ,  Keisaku Yamamoto ,  Minoru Takane

IPC分类号： C08F4/68 ,  C08F210/00

CPC分类号： C08F210/00

摘要： An ethylene-.alpha.-olefin copolymer is disclosed, which comprises ethylene and an .alpha.-olefin having from 3 to 10 carbon atoms, has an ethylene/.alpha.-olefin molar ratio of from 88/12 to 98/2, and which has a number average molecular weight of from 35,000 to 80,000 and a weight average molecular weight/number average molecular weight ratio of from 1.8/1 to 3.0/1 as determined by gel permeation chromatography. A process for producing the ethylene-.alpha.-olefin copolymer is also disclosed. The ethylene-.alpha.-olefin copolymer exhibits excellent transparency and excellent low-temperature heat-sealing properties. The process is advantageous from the standpoint of equipment, energy and cost.