公开(公告)号：US10940612B2

公开(公告)日：2021-03-09

申请号：US16261734

申请日：2019-01-30

申请人： PERFORMANCE POLYAMIDES SAS ,  GALA INDUSTRIES, INC.

发明人： Jean-Francois Estur ,  Eric Roche ,  Michael Eloo ,  Berthold Druschel

IPC分类号： B29B9/06 ,  B29B9/12 ,  C08G69/26 ,  C08J3/12 ,  C08K3/34 ,  C09K8/80 ,  B29B9/14 ,  B29K77/00 ,  B29L31/00

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.

公开(公告)号：US09676121B2

公开(公告)日：2017-06-13

申请号：US14557033

申请日：2014-12-01

申请人： RHODIA OPERATIONS ,  GALA INDUSTRIES, INC.

发明人： Jean-Francois Estur ,  Eric Roche ,  Michael Eloo ,  Berthold Druschel

IPC分类号： C09K8/80 ,  C08G69/00 ,  B29B9/10 ,  B29B9/12 ,  B29B9/06 ,  C08J3/12 ,  B29K77/00 ,  B29L31/00

CPC分类号： B29B9/065 ,  B29B9/12 ,  B29B9/14 ,  B29B2009/125 ,  B29K2077/00 ,  B29L2031/772 ,  C08G69/26 ,  C08J3/12 ,  C08J2377/06 ,  C08K3/34 ,  C09K8/80 ,  Y10T428/2982

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.