专利名称：POLYAMIDE BEADS AND METHOD FOR THE
PRODUCTION THEREOF
发明人：JEAN-FRANCOIS ESTUR,ERIC
ROCHE,MICHAEL ELOO,BERTHOLDDRUSCHEL
申请号：US15589498申请日：20170508
公开号：US20170239844A1公开日：20170824
摘要：Certain polyamide beads or granules are useful as a sustaining material forunderground natural or artificial cracks of the earth's crust essentially employed for theextraction of hydrocarbons such as crude oil or natural gas; such polyamide beads have aspherical or ellipsoidal shape and have a surface free of concave portions,
advantageously having a uniform shape, and having a mean diameter lower than or equalto 1.7 mm and a porosity lower than 0.1 ml/g, and are produced using a particular cuttingdevice/extruder.
申请人：RHODIA OPERATIONS,GALA INDUSTRIES, INC.
地址：AUBERVILLIERS FR,EAGLE ROCK VA US
国籍：FR,US
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