公开(公告)号：US20170342268A1

公开(公告)日：2017-11-30

申请号：US15535536

申请日：2015-12-21

Applicant: RHODIA OPERATIONS

Inventor： Gilles ORANGE ,  Christiane PREBET ,  Didier TUPINIER ,  Stéphane JEOL

IPC: C08L77/06 ,  C08J5/04

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.

公开(公告)号：US20180257318A1

公开(公告)日：2018-09-13

申请号：US15536953

申请日：2015-12-21

Applicant: RHODIA OPERATIONS ,  CENTRE TECHNIQUE DES INDUSTRIES MECANIQUES (CETIM)

Inventor： Gilles ORANGE ,  Didier TUPINIER ,  Philippe PAPIN ,  Mickaeel AUBRY ,  Jean-Michel LEBRUN ,  Sébastien COMAS-CARDONA

IPC: B29C70/52 ,  B29C70/06

CPC classification number: B29C70/523 ,  B29C70/06 ,  B29C70/527 ,  B29C70/528 ,  B29K2077/00 ,  B29K2105/0809 ,  B29K2913/02

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.

公开(公告)号：US20210197428A1

公开(公告)日：2021-07-01

申请号：US17057455

申请日：2019-05-21

Applicant: Rhodia Operations ,  GEORGES PERNOUD SAS ,  BILLION SAS

Inventor： Gilles ORANGE ,  Fabien PASCAL ,  Patrice JACQUET ,  Alexandre GIROUD

IPC: B29C45/00 ,  C08J5/04 ,  B29C70/46 ,  B29C70/48

Abstract: The present invention relates to the use of thermoplastic polymer compositions for impregnating reinforcing materials in the form of fabric or industrial fabrics for the manufacture of composite materials. The field of the invention is that of composite materials as well as molding/consolidation processes and obtained parts. The invention more particularly relates to a method of manufacturing a composite article by injection molding comprising at least the steps of introducing at least one reinforcement fabric into a preheated mold, partial closure of the mold, a temperature rise step of the mold, optionally a step of maintaining the temperature of the mold before injection of a thermoplastic polymer composition, a step of injecting a thermoplastic polymer composition into the mold, a step of mold closure to the final part thickness allowing the flow of the resin through the reinforcing fabric, a cooling step and a recovery step of the obtained composite article.

公开(公告)号：US20170342267A1

公开(公告)日：2017-11-30

申请号：US15534829

申请日：2015-12-21

Applicant: RHODIA OPERATIONS

Inventor： Gilles ORANGE ,  Didier TUPINIER

IPC: C08L77/06 ,  B29C70/48 ,  C08J5/24 ,  B29C70/52 ,  B29K105/06 ,  B29K77/00

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.