发明名称 |
Propylene polymer foams |
摘要 |
The present invention relates to a foam, a process for preparing the foam and an article containing the foam. The foam contains a coupled propylene polymer and has a density in of from 9.6 to 801 kg/m3 and has either a foamability factor of more than 1.8 to less than 2.8 and an open cell content less than 20 percent, or a foamability factor of at least 2.8 and less than 15 and an open cell content of less than 50 percent. The process includes heating a coupled propylene polymer having a melt flow rate from 0.2 to 20 g/10 min and a melt strength of at least 39 cN to a molten state to produce a molten polymer material and mixing said molten polymer material with a blowing agent under conditions to produce a foamed material having a density in the range of from 9.6 to 801 kg/m3.
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申请公布号 |
US2002077379(A1) |
申请公布日期 |
2002.06.20 |
申请号 |
US20010970282 |
申请日期 |
2001.10.02 |
申请人 |
HUGHES KEVIN R.;SAMMLER ROBERT L.;SUH KYUNG W.;ZHAO JIN;THOEN JOHAN A.;TUSIM MARTIN H. |
发明人 |
HUGHES KEVIN R.;SAMMLER ROBERT L.;SUH KYUNG W.;ZHAO JIN;THOEN JOHAN A.;TUSIM MARTIN H. |
分类号 |
C08J9/10;C08J9/14;C08L23/10;(IPC1-7):C08J9/00 |
主分类号 |
C08J9/10 |
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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