| 发明名称 |
Biaxially oriented polypropylene film having improved tear propagation resistance |
| 摘要 |
A biaxially oriented polypropylene film is described. The base ply of the film essentially consists of a polypropylene prepared by means of a metallocene catalyst. This polypropylene is distinguished by a mean isotactic block length of greater than 40, an n-heptane soluble fraction of less than 1% and a ratio of the weight average molecular weight Mw to the number average molecular weight Mn of less than 4.
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| 申请公布号 |
US6063482(A) |
申请公布日期 |
2000.05.16 |
| 申请号 |
US19970960968 |
申请日期 |
1997.10.30 |
| 申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
PEIFFER, HERBERT;BUSCH, DETLEF;SCHLOEGL, GUNTER;DRIES, THOMAS;WINTER, ANDREAS |
| 分类号 |
B65D65/40;B29C55/12;B29K23/00;B29L7/00;B29L9/00;B32B27/18;B32B27/32;C08F8/00;C08F10/06;C08J5/18;C08L23/10;C08L23/12;C08L101/00;(IPC1-7):B32B27/32 |
主分类号 |
B65D65/40 |
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