发明名称 |
Strahlungsabbau-Polypropylen und daraus hergestellten Fasern |
摘要 |
A propylene homopolymer having a stick-point of 30 cm or less during melt spinning, an oligomer content of less than 1500 ppm without postpolymerization treatment to remove oligomers, and a melt flow rate greater than 300 dg/min is prepared by radiation visbreaking in a multistage fluidized bed reactor. The polymer is subjected to irradiation in the substantial absence of oxygen, followed by a multistage treatment in the presence of a controlled amount of oxygen. The radiation visbreaking process can also be applied to other propylene polymer materials. The propylene polymer materials produced by this radiation visbreaking process can be used, for example, for extrusion coating, film production, and injection molding. |
申请公布号 |
DE69723315(D1) |
申请公布日期 |
2003.08.07 |
申请号 |
DE1997623315 |
申请日期 |
1997.03.27 |
申请人 |
BASELL NORTH AMERICA INC., ELKTON |
发明人 |
WILLIAMS, STEPHEN D.;YOO, HEE JU;DRICKMAN, MIRIAM R. |
分类号 |
C08J3/28;B29C45/00;C08F8/00;C08F8/50;C08F10/06;C08F110/06;C08F210/06;C08J5/18;C08L23/10;D01F6/06;D04H1/4291;D04H1/56;D04H3/007 |
主分类号 |
C08J3/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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