The invention relates to a thermoplastic polymer composition, in particular to a polyamide composition, having improved flame-retardant properties by maintaining its good physical properties. Furthermore, the invention relates to a method of preparing said thermoplastic polymer composition and to shaped articles, in particular fibers, made of the thermoplastic polymer composition of the invention and that have excellent properties in order to ensure adequate fire protection.
The invention relates to a thermoplastic polymer composition, in particular to a polyamide composition, having improved flame-retardant properties by maintaining its good physical properties. Furthermore, the invention relates to a method of preparing said thermoplastic polymer composition and to shaped articles, in particular fibers, made of the thermoplastic polymer composition of the invention and that have excellent properties in order to ensure adequate fire protection.
C08G 63/692 - Polyesters contenant des atomes autres que le carbone, l'hydrogène et l'oxygène contenant du phosphore
C08L 77/06 - Polyamides dérivés des polyamines et des acides polycarboxyliques
C07F 9/6571 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle comportant des atomes de phosphore, avec ou sans atomes d'azote, d'oxygène, de soufre, de sélénium ou de tellure, comme hétéro-atomes du cycle comportant des atomes de phosphore et d'oxygène comme uniques hétéro-atomes du cycle
3.
SUSTAINABLE DRY PROCESS FOR THE SEPARATION AND RECOVERY OF PURE MATERIALS, PARTICULARLY OF PURE POLYMERS FROM MULTI-MATERIAL SOURCES
The present invention relates to a process for producing a highly concentrated aqueous solution of a salt of a diamine and dicarboxylic acid by using a pre-salt aqueous solution having a high concentration of diacid/diamine salt and an excess of dicarboxylic acid; and adding additional diamine to obtain the final diacid/diamine solution. The final diacid/diamine salt solution obtained is suitable for the manufacture of a polyamide such as for example polyamide 66.
The invention relates to a phosphorous containing monomer and a process thereof. Furthermore, the invention relates to a phosphorous containing polymer comprising said monomer and a production process thereof. The phosphorous containing polymer of the invention is useful as flame-retardant polymer. Additionally, the invention relates to a thermoplastic polymer composition comprising said phosphorous containing polymer and optionally a further thermoplastic polymer. The thermoplastic polymer composition can be used for the production of molded articles or yarns having excellent flame-retardant properties in order to ensure adequate fire protection.
C07F 9/6571 - Composés hétérocycliques, p. ex. contenant du phosphore comme hétéro-atome du cycle comportant des atomes de phosphore, avec ou sans atomes d'azote, d'oxygène, de soufre, de sélénium ou de tellure, comme hétéro-atomes du cycle comportant des atomes de phosphore et d'oxygène comme uniques hétéro-atomes du cycle
C08L 77/06 - Polyamides dérivés des polyamines et des acides polycarboxyliques
6.
Production of an aqueous solution of diamine/diacid salts
The present invention relates to a process for the production of an aqueous solution of a salt of a diamine and a diacid for the manufacture of polyamide.
Process for preparing a copolyamide without encrustation in the autoclave The present invention relates to a novel process for the production of a copolyamide comprising a polymerization product of hexamethylene diamine, adipic acid and terephthalic acid.
C08G 69/26 - Polyamides dérivés, soit des acides amino-carboxyliques, soit de polyamines et d'acides polycarboxyliques dérivés de polyamines et d'acides polycarboxyliques
The present invention relates to a process for the production of an aqueous solution of a salt of a diamine and a diacid useful for the manufacture of polyamide. The process comprises the step of feeding into a first reaction zone a feed stream comprising the diamine, a feed stream comprising the diacid and optionally further feed streams, the flow rates of the feed streams being adjusted so that the diacid/diamine molar ratio in an output stream leaving the first reaction zone is greater than 1.1, characterized in that the first reaction zone contains an aqueous medium and in that the flow rates of the feed streams are adjusted in response to a change in sound velocity and/or density of the aqueous medium in the first reaction zone.
A composition, in particular for molding, including a mixture of a polyamide material, a powder made from airbag scraps, and optionally a reinforcing filler. Also described, is an article formed from the composition.
C08L 77/06 - Polyamides dérivés des polyamines et des acides polycarboxyliques
C08K 3/013 - Charges, pigments ou agents de renforcement
C08J 3/00 - Procédés pour le traitement de substances macromoléculaires ou la formation de mélanges
C08J 11/06 - Récupération ou traitement des résidus des polymères sans réaction chimique
C08K 11/00 - Emploi d'ingrédients de constitution inconnue, p. ex. produits de réaction non définis
B29C 45/00 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet
B29K 77/00 - Utilisation de polyamides, p. ex. polyesteramides, comme matière de moulage
The present invention relates to a gas storage tank, for storing gas, especially CNG, methane and/or hydrogen, said tank comprising a liner comprising a high-viscosity polyamide composition comprising a branched polyamide and an impact modifier, and to a process for manufacturing said the tank. More particularly, the composition comprises a copolyamide of the random tree type resulting from the reaction between a multifunctional monomer comprising at least three reactive functions to form an amide function, these functions being of two different types, difunctional monomers conventionally used in the manufacture of linear polyamides, and optionally difunctional monomers.
F17C 1/10 - Récipients sous pression, p. ex. bouteilles de gaz, réservoirs de gaz, cartouches échangeables avec des moyens pour assurer une protection contre la corrosion, p. ex. due à un acide à l'état gazeux
C08G 69/08 - Polyamides dérivés, soit des acides amino-carboxyliques, soit de polyamines et d'acides polycarboxyliques dérivés d'acides aminocarboxyliques
The present invention relates to a process comprising a step of heat treatment of a polyamide-based powder so as to reduce the difference between the initial crystal rearrangement temperature and the final crystal rearrangement temperature. The invention also relates to articles obtained by using powders that have undergone this treatment, in particular by selective melting of layers of polymer powder, in particular rapid prototyping by solid-phase sintering using a laser.
B29C 67/00 - Techniques de façonnage non couvertes par les groupes , ou
B32B 27/08 - Produits stratifiés composés essentiellement de résine synthétique comme seul composant ou composant principal d'une couche adjacente à une autre couche d'une substance spécifique d'une résine synthétique d'une sorte différente
B32B 27/34 - Produits stratifiés composés essentiellement de résine synthétique comprenant des polyamides
B29K 77/00 - Utilisation de polyamides, p. ex. polyesteramides, comme matière de moulage
The present invention relates to a process for the treatment of technical textiles based on thermoplastic fibers and comprising a coating, such as, in particular, airbags, using the principle of centrifugal decanting to separate the fiber residues and the coating material. The invention also relates to a process for the manufacture of a thermoplastic composition, in particular for molding, obtained by use of the fiber residues as obtained and optionally of reinforcing fillers. The distinguishing feature of this invention is based on the preparation of the fabric devoid of coating, thus resulting in formulations with elevated mechanical performances.
B29B 17/00 - Récupération de matières plastiques ou d'autres constituants des déchets contenant des matières plastiques
B29B 17/02 - Séparation de matières plastiques des autres matières
B29B 17/04 - Désintégration des matières plastiques
B29K 77/00 - Utilisation de polyamides, p. ex. polyesteramides, comme matière de moulage
B29K 83/00 - Utilisation de polymères contenant dans la chaîne principale uniquement du silicium avec ou sans soufre, azote, oxygène ou carbone comme matière de moulage
B29K 283/00 - Utilisation de polymères contenant dans la chaîne principale uniquement du silicium avec ou sans soufre, azote, oxygène ou carbone comme matière de renforcement
A method for making a polyamide composition, in particular for molding, prepared by mixing a polyamide material, a powder made from airbag scraps, and optionally reinforcing fillers is described. Also described, is a method for recycling used airbags.
A process for the manufacture of polyamide is described. Also described, is a process comprising a stage of initial polymerization under pressure starting from monomers and a stage of finishing in the liquid phase at atmospheric pressure. The finishing stage can employ an injection of inert gas along a direction essentially parallel to that of the flow of the liquid reaction stream.
C08G 69/26 - Polyamides dérivés, soit des acides amino-carboxyliques, soit de polyamines et d'acides polycarboxyliques dérivés de polyamines et d'acides polycarboxyliques
A polyamide modified by a multi-functional compound, and a method for producing said polyamide and compositions comprising same are described. A method for the production of a polyamide comprising linear macromolecular chains and star-shaped macromolecular chains is also described. A resulting polyamide having optimal mechanical and rheological properties in order to (i) improve mould filling speed and quality, and (ii) produce moldable compositions with high filler contents is also described.
C08G 69/36 - Polyamides dérivés, soit des acides amino-carboxyliques, soit de polyamines et d'acides polycarboxyliques dérivés d'aminoacides, de polyamines et d'acides polycarboxyliques
C08G 69/26 - Polyamides dérivés, soit des acides amino-carboxyliques, soit de polyamines et d'acides polycarboxyliques dérivés de polyamines et d'acides polycarboxyliques
C08L 77/02 - Polyamides dérivés des acides oméga-aminocarboxyliques ou de leurs lactames
C08L 77/06 - Polyamides dérivés des polyamines et des acides polycarboxyliques
A method for making polyamide is described. More particularly, a method for making a polyamide from at least one diacid and one diamine, that includes a step of concentrating an aqueous solution of diacid and diamine salt up to a salt weight concentration higher than 85%, and a polymerization step up to a desired polymerization degree is described.
A method for manufacturing a solution of a diacid and diamine salt for manufacturing polyamide is described. A method for manufacturing an aqueous solution of diacid and diamine salts produced by mixing at least two diacids and at least one diamine, with a weight concentration of salt between 40% and 70%, including, in a first step, preparing an aqueous solution of diacid(s) and diamine(s) with a diacid/diamine mole ratio of less than 1 using one diacid and one diamine, and in a second step, adjusting the mole ratio of diacids/diamine(s) to a value of between 0.9 and 1.1, and fixing the weight concentration of salt by adding another diacid and, optionally, additional water and/or diamine is also described.
The invention relates to a method for producing polyamide. The invention especially relates to a method comprising a step of initial polymerisation from monomers under pressure and a finishing step in a liquid phase under atmospheric pressure, the finishing step involving an injection of inert gas in a direction essentially parallel to that of the flow of the liquid reaction flow.
A method for manufacturing items by the selective fusion of polymer powder layers, particularly rapid prototyping by solid phase sintering a thermoplastic polymer powder by means of a laser, having characteristics of grading and particle distribution is described. Items obtained from such a method are also described.
The present invention relates to a method for manufacturing a solution of a diacid and diamine salt for manufacturing polyamide. The invention specifically relates to a method for manufacturing an aqueous solution of diacid and diamine salts produced by mixing at least two diacids and at least one diamine, with a weight concentration of salt between 40 and 70%, consisting of, in a first step, preparing an aqueous solution of diacid(s) and diamine(s) with a diacid/diamine mole ratio of less than 1 using one diacid and one diamine, and in a second step, adjusting the mole ratio of diacids/diamine(s) to a value of between 0.9 and 1.1, and fixing the weight concentration of salt by adding another diacid and, optionally, additional water and/or diamine.
The invention relates to a method for making polyamide, and more particularly, to a method for making polyamide from at least one diacid and one diamine, that includes the step of concentrating an aqueous solution of diacid and diamine salt up to a salt weight concentration higher than 85%, and a polymerisation step up to a desired polymerisation degree.
C08G 69/26 - Polyamides dérivés, soit des acides amino-carboxyliques, soit de polyamines et d'acides polycarboxyliques dérivés de polyamines et d'acides polycarboxyliques
Solutions of a salt of a diamine and of a diacid, more particularly concentrated solutions of hexamethylene diammonium adipate salt (“nylon salt”), useful starting materials for the production of polyamides, more specifically of PA66, are prepared by mixing a diacid and a diamine, at a salt concentration by weight of from 50% to 80%, in a first stage, to provide aqueous solutions of diacid and diamine having a diacid/diamine molar ratio of greater than 1.1 and, in a second stage, adjusting the diacid/diamine molar ratio, by adding diamine, to a value of from 0.9 to 1.1, preferably from 0.99 to 1.01, and in fixing the salt concentration by weight by, optionally, adding water thereto.
C08G 69/26 - Polyamides dérivés, soit des acides amino-carboxyliques, soit de polyamines et d'acides polycarboxyliques dérivés de polyamines et d'acides polycarboxyliques
brevets
