发明名称 |
Verfahren zur Herstellung von Partikelfoermigen, Expandierbaren Propylenpolymerisaten |
摘要 |
The invention relates to expandable olefin bead polymers which comprise a blowing agent with a boiling point of from -5 to 150° C., selected from the group consisting of alkanes, alkanols, ketones, ethers and esters. The particles are unfoamed and have a bulk density above 500 g/l, and can be foamed to a bulk density below 200 g/l after storage for one hour at room temperature in free contact with the atmosphere. They are prepared by impregnating polyolefin pellets in suspension in a pressure vessel with the blowing agent, cooling the batch below 100° C., reducing the pressure and isolating the particles. |
申请公布号 |
DE50012568(D1) |
申请公布日期 |
2006.05.24 |
申请号 |
DE2000512568 |
申请日期 |
2000.12.18 |
申请人 |
BASF AG |
发明人 |
MALETZKO, DR.;HAHN, DR.;DE GRAVE, DR.;EHRMANN, DR.;DIETZEN, DR. |
分类号 |
C08J3/12;C08J9/16;C08J9/18;C08K3/00;C08K5/00;C08L23/10 |
主分类号 |
C08J3/12 |
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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