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公开(公告)号：US10723879B2
公开(公告)日：2020-07-28
申请号：US15535536
申请日：2015-12-21
Applicant: RHODIA OPERATIONS
Inventor： Gilles Orange , Christiane Prebet , Didier Tupinier , Stéphane Jeol
Abstract: The invention relates to a thermoplastic composition having improved fluidity in the molten state, comprising at least: (a) a polyamide that has a melt viscosity greater than or equal to 50 Pa·s, and (b) a non-evolutive polyamide having a melt viscosity lower than the melt viscosity of said polyamide (a), above 0.8 Pa·s, and having a number-average molecular weight Mn lower than that of said polyamide (a), said composition having a melt viscosity that is stabilized at a value below the melt viscosity of said polyamide (a), said polyamide (b) having: a concentration of amine end groups (AEG) and/or of carboxyl end groups (CEG) less than or equal to 20 meq/kg, or a concentration of amine end groups (AEG) greater than or equal to 25 meq/kg; a concentration of acid end groups (CEG) greater than or equal to 25 meq/kg; and a concentration of blocked end groups (BEG) greater than or equal to 25 meq/kg.
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公开(公告)号：US10584241B2
公开(公告)日：2020-03-10
申请号：US15534829
申请日：2015-12-21
Applicant: RHODIA OPERATIONS
Inventor： Gilles Orange , Didier Tupinier
Abstract: The invention concerns a thermoplastic composition having high fluidity in the molten state, comprising at least: (a) one thermoplastic polymer matrix; (b) one oligomer selected from cyclic ester oligomers, ether oligomers and mixtures thereof, said oligomer having a degree of polymerization of between 2 and 25; and (c) one phenolic polymer; said compounds (b) and (c) being present in a weight ratio (c)/(b) varying from 0.25 to 6, and preferably from approximately 0.75 to 2.75. The invention also concerns a process for producing a composite article from such a composition by impregnating a reinforcement such as a fabric or a preform, the composite article obtained according to this process, and the use of an oligomer (b) in combination with at least one phenolic polymer (c), as a plasticizing additive in a thermoplastic polymer matrix.
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公开(公告)号：US20210339487A1
公开(公告)日：2021-11-04
申请号：US17324849
申请日：2021-05-19
Inventor： Gilles Orange , Didier Tupinier , Philippe Papin , Mickaël Aubry , Jean-Michel Lebrun , Sébastien Comas-Cardona
Abstract: The invention relates to a method for continuous production of a composite material profile by injection-pultrusion from at least one reinforcing fabric and at least one thermoplastic polymer having high fluidity, said method being characterized in that: i) said fabric is continuously pulled with a pulling speed of at least 0.4 m.min−1 in the course of said process; ii) the impregnation stage is performed by injection of a polymeric composition having high fluidity through the fabric; iii) the profile is then shaped with a specific thermal profile. The invention also relates to a profile obtained according to the method of the invention and a composite article comprising such a profile the curvature whereof may be modified in its curvature by bending and/or its profile by rotational molding.
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公开(公告)号：US20150080274A1
公开(公告)日：2015-03-19
申请号：US14553633
申请日：2014-11-25
Applicant: RHODIA OPERATIONS
Inventor： Gilles Orange , Jean-Francois Estur , Didier Tupinier
IPC: C09K8/80
CPC classification number: C09K8/80 , B82Y30/00 , C08J5/005 , C08J5/04 , C08J2377/00 , C08K3/34 , C08K3/346 , C08K3/36 , C08K3/40 , C08L77/00
Abstract: Composite propping agents of low density and of high mechanical strength are based on a thermoplastic polymer matrix, in particular having low compressive deformation at high temperatures are especially useful in the field of well fracturing for the recovery of sludges, liquids and gases present in underground reservoirs, and in particular in the field of the extraction of hydrocarbons, such as crude oil or natural gas.
Abstract translation: 低密度和高机械强度的复合支撑剂基于热塑性聚合物基质，特别是在高温下具有低的压缩变形特别可用于在井压裂领域用于回收地下储层中存在的淤泥，液体和气体 ，特别是在诸如原油或天然气的烃类的提取领域。
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