公开(公告)号：US20210340338A1

公开(公告)日：2021-11-04

申请号：US17374132

申请日：2021-07-13

Applicant: Arkema France

Inventor： Pierre NOGUES ,  Geoffroy CAMMAGE

IPC: C08J3/14 ,  C08G69/28 ,  C08G69/04 ,  C08G69/26 ,  C08G69/02 ,  A61K8/02 ,  A61K8/88 ,  A61Q19/00

Abstract: A method for producing a polycondensate powder dispersion, wherein the method includes at least one step of polycondensation: i) of at least one diester and at least one diamine, and/or ii) at least one amino ester, while stirring, in a solvent that can solubilize both the diamine and the diester and/or the amino ester but not the polyamide that forms during the polycondensation, at a temperature between 30° C. and the boiling temperature of the solvent, in order to produce a powder precipitate dispersed in the solvent.

公开(公告)号：US20170349714A1

公开(公告)日：2017-12-07

申请号：US15539002

申请日：2015-12-22

Applicant: Arkema France

Inventor： Pierre NOGUES ,  Geoffroy CAMMAGE

IPC: C08J3/14 ,  A61K8/02 ,  A61Q19/00 ,  A61K8/88 ,  C08G69/28

CPC classification number: C08J3/14 ,  A61K8/022 ,  A61K8/88 ,  A61K2800/10 ,  A61K2800/412 ,  A61Q19/00 ,  C08G69/02 ,  C08G69/04 ,  C08G69/26 ,  C08G69/28 ,  C08J2377/06

Abstract: A method for producing a polycondensate powder dispersion, characterised in that it includes at least one step of polycondensation: i) of at least one diester and at least one diamine, and/or ii) at least one amino ester, while stirring, in a solvent that can solubilise both the diamine and the diester and/or the amino ester but not the polyamide that forms during the polycondensation, at a temperature between 30° C. and the boiling temperature of the solvent, in order to produce a powder precipitate dispersed in the solvent.

公开(公告)号：US20160280854A1

公开(公告)日：2016-09-29

申请号：US15036589

申请日：2014-11-14

Applicant: ARKEMA FRANCE

Inventor： Thierry BRIFFAUD ,  Pierre NOGUES ,  Guillaume LE ,  Frédéric MALET

IPC: C08G69/04 ,  C08G69/08

CPC classification number: C08G69/04 ,  C08G69/08

Abstract: The invention concerns a method for producing polyamide from an amino ester of formula NH2—(CH2)n—COOR, in which R represents an alkyl group and n represents an integer ranging from 5 to 14, comprising: a first reaction step in the presence of water, at a first temperature; followed by a second reaction step at a second temperature higher than the first temperature.