发明名称 |
POLYAMIDE BEADS AND METHOD FOR THE PRODUCTION THEREOF |
摘要 |
Certain polyamide beads or granules are useful as a sustaining material for underground natural or artificial cracks of the earth's crust essentially employed for the extraction of hydrocarbons such as crude oil or natural gas; such polyamide beads have a spherical or ellipsoidal shape and have a surface free of concave portions, advantageously having a uniform shape, and having a mean diameter lower than or equal to 1.7 mm and a porosity lower than 0.1 ml/g, and are produced using a particular cutting device/extruder. |
申请公布号 |
US2015151452(A1) |
申请公布日期 |
2015.06.04 |
申请号 |
US201414557033 |
申请日期 |
2014.12.01 |
申请人 |
RHODIA OPERATIONS ;GALA INDUSTRIES, INC. |
发明人 |
ESTUR Jean-Francois;Roche Eric;Eloo Michael;Druschel Berthold |
分类号 |
B29B9/12;C09K8/80 |
主分类号 |
B29B9/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Aubervillers FR |