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1. WO2020070446 - IMPROVED METHOD FOR THE PRODUCTION OF TRANSPARENT POLYAMIDES

Publication Number WO/2020/070446
Publication Date 09.04.2020
International Application No. PCT/FR2019/052334
International Filing Date 02.10.2019
IPC
C08G 69/36 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
69Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
02Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
36derived from amino acids, polyamines, and polycarboxylic acids
C08G 69/26 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
69Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
02Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids
26derived from polyamines and polycarboxylic acids
CPC
C08G 69/265
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
69Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
02Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
26derived from polyamines and polycarboxylic acids
265from at least two different diamines or at least two different dicarboxylic acids
C08G 69/36
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
69Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
02Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
36derived from amino acids, polyamines and polycarboxylic acids
Applicants
  • ARKEMA FRANCE [FR]/[FR]
Inventors
  • BRIFFAUD, Thierry
  • SAILLARD, Benjamin
  • CASSIANO GASPAR, Stefânia
  • VERGER, Joël
  • OLIVIER-CHANU, Fabienne
Agents
  • KLING, Simone
Priority Data
185917303.10.2018FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) IMPROVED METHOD FOR THE PRODUCTION OF TRANSPARENT POLYAMIDES
(FR) PROCEDE AMELIORE POUR LA FABRICATION DE POLYAMIDES TRANSPARENTS
Abstract
(EN)
The invention relates mainly to a method for producing a transparent polyamide, comprising a step of polycondensing a mixture of monomers comprising at least one carboxylic diacid and at least one cycloaliphatic diamine, wherein the cycloaliphatic diamine comprises two rings linked by an alkylene group having 1 to 6 carbon atoms, each ring being substituted by an amine group and at least one alkyl group which can be the same or different, comprising 1 to 6 carbon atoms, characterised in that the diamine can be broken down into six isomer fractions when it undergoes gas chromatography analysis on a non-polar column, and in that, when said isomer fractions are designated isomer fractions I to VI in their order of elution, the mass content FI in fraction I of said cycloaliphatic diamine is no greater than 35%. The invention also relates to the use of such a cycloaliphatic diamine for the production of a transparent polyamide. Finally, it relates to a transparent polyamide and to a formulation which can be obtained using said method, and to articles obtained from such a polyamide or such a formulation.
(FR)
L'invention concerne principalement un procédé de fabrication d'un polyamide transparent comprenant une étape de polycondensation d'un mélange de monomères comprenant au moins un diacide carboxylique et au moins une diamine cycloaliphatique, dans lequel la diamine cycloaliphatique comporte deux cycles reliés par un groupe alkylène comportant 1 à 6 atomes de carbone, chaque cycle étant substitué par un groupe amine et au moins un groupe alkyle pouvant être identique ou différent, comportant 1 à 6 atomes de carbone, caractérisé en ce que la diamine se décompose en six fractions d'isomères lorsqu'elle est soumise à une analyse par chromatographie gazeuse sur une colonne non polaire et que, lorsque lesdites fractions d'isomères sont nommées fractions d'isomères I à VI dans leur ordre d'élution, la teneur massique FI en fraction I de ladite diamine cycloaliphatique n'excède pas 35%. Elle concerne par ailleurs aussi l'utilisation d'une telle diamine cycloaliphatique pour la fabrication d'un polyamide transparent. Elle concerne enfin un polyamide transparent ainsi qu'une formulation, susceptibles d'être obtenus par ledit procédé et des articles obtenus à partir d'un tel polyamide ou d'une telle formulation.
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