Arkema France

Universitè Catholique De Louvain

Association Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels (a.r.m.i.n.e.s.)

Frederic Malet

Thibaut Montanari

Guillaume Le

Julien Jouanneau

Eric Gamache

Damien Rauline

Benoît Brule

Philippe Blondel

Rosangela Pirri

Christophe Navarro

Jean-Jacques Flat

Thierry Briffaud

Christophe Lacroix

Karine Loyen

Michael Werth

Laurent B Cartier

René-Paul Eustache

Aline Couffin

Laure Berdin

Alejandra Reyna-Valencia

Perrine Babin

Benoit Andre

Francois Touchaleaume

Jacques Devaux

Patricia Krawczak

Michel Sclavons

Jeremie Soulestin

Inci Turan

Pierre Nogues

A transparent antistatic composition based on polymethyl methacrylate (PMMA), including: 55% to 99.9% by weight of PMMA, and 0.1% to 45% by weight of at least one polyamide (PA) block-containing and polyether (PE) block-containing copolymer (PEBA) including polyethylene glycol (PEG), with respect to the total composition weight, said copolymer being characterized in that it includes in the range 50% to 80% by weight of PEG with respect to the total weight of copolymer.

Transparent and antistatic PMMA composition

The present invention relates to the use of a copolymer containing polyether blocks and polyamide blocks for manufacturing an inflatable catheter element, such as a catheter balloon, with improved bursting strength, in which said copolymer has the following characteristics: a number-average molecular mass of the PE blocks greater than 500 g/mol, and a number-average molecular mass of the PA blocks greater than 10,000 g/mol.

Use of PEBA having long blocks for the manufacture of all or part of a catheter

The invention relates to a block copolymer derived from at least one ethylene oxide and/or propylene oxide monomer containingC. The present invention also relates to a method for preparing such a block copolymer.

Block copolymer derived from renewable materials and method for making such a block copolymer

The present invention relates to an impact modified polyamide composition. In particular, the present invention relates to impact modified transparent polyamide compositions comprising a multistage polymer. More particularly, the present invention relates to the use of multistage polymer as impact modifier in a transparent polyamide composition.

Impact modified transparent polyamide polymer composition

The present invention relates to a multistage polymer, its composition, its process of preparation, and its use as impact modifier in thermoplastic compositions. More particularly the present invention relates to a process for manufacturing a polymer composition comprising a multistage polymer and its use as impact modifier in thermoplastic compositions.

Process of manufacturing a multistage polymer, its composition, its use and composition comprising it

The invention relates to a method for synthesising a block copolymer alloy including at least one rigid polyamide block PA, including the steps of: a) producing said block copolymer; b) adding, during step a) and to at least a portion of said block copolymer, 0.1 to 30 wt % of at least one organic salt in the molten state relative to the total weight of the alloy, so that the alloy thus obtained has improved antistatic properties and identical mechanical properties when compared to the same polymer produced without adding an organic salt. The invention also relates to a block copolymer alloy having improved antistatic properties and obtained by said method, to the use thereof in a polymer matrix, and to a composition containing same.

Method for synthesising a block copolymer alloy having improved antistatic properties

The invention relates to a copolymer comprising at least two distinct polyamide blocks and at least one polyether block, and a method for preparation of said copolymer comprising the following steps: &#x2014;in a first step, the polyamide block PA1 is prepared by polycondensation of chosen monomers: amino acids, lactames or diamines and dicarboxylic acids, in the presence of an appropriate chain limiter; &#x2014;then, in a second optional step, the polyamide PA1 block obtained is reacted with all or part of the polyether PE blocks, in the presence or absence of a catalyst; &#x2014;in a third step, the polyamide PA2 block is prepared by polycondensation of the chosen isomers: amino acids, lactams or diamines and dicarboxylic acids, in the presence of an appropriate chain limiter; &#x2014;in a fourth optional step, the polyamide PA2 block obtained is reacted with all or part of the polyether PE blocks, in the presence or absence of a catalyst; &#x2014;in a fifth step, PA1 or the reaction medium from step 2 is reacted with PA2 or the reaction medium from step 4 and with PE or the remainder of PE not added in step 2 or 4.

Copolymer with polyamide blocks and a polyether block

The invention relates to a method for converting a polycondensed elastomeric thermoplastic polymer, including a step of extruding the polycondensed elastomeric thermoplastic polymer in the presence of water. The polycondensed elastomeric thermoplastic polymer is in particular chosen from copolymer block amides, copolyethers or copolyester block urethanes, copolyether block esters and the mixtures thereof, and is preferably a copolyether block amide.

Method for extruding a polymer in the presence of water

The present invention relates to compositions based on a copolymer comprising homo- or copolyamide polyamide blocks (PA blocks), with the exclusion of completely aromatic PA blocks, and polyether blocks comprising:

Aging-resistant copolymers comprising polyamide blocks and polyether blocks

The present invention is a copolymer based on amide units and ether units, wherein the amide units being comprise a major portion of an equimolar combination of at least one diamine and at least one dicarboxylic acid, the diamine(s) is/are mainly cycloaliphatic and the dicarboxylic acid(s) is/are mainly linear and aliphatic, the amide units optionally comprise, but in a minor proportion, at least one other polyamide comonomer, the respective proportions of ether and amide unit monomers are selected in such a way that said copolymer is highly transparent to such an extent that the transmittance at 560 nm on a plate 2 mm thick is greater than 75%; the crystallinity of said copolymer is such that the enthalpy of fusion during the first heating of a ISO DSC (delta Hm(2)) is at least 30 J/g, where the mass is related to the number of amide units contained or of polyamide contained, which fusion corresponds to that of the amide units; and said copolymer has a glass transition temperature of at least 75&#xb0; C.

Copolymers having amide units and ether units with improved optical properties

The invention relates to a process for producing a shaped article having excellent mechanical properties, said article comprising a block copolymer PAX.Y/PE comprising polyamide (PA) blocks alternating with polyether (PE) blocks, prepared from homopolyamide blocks PAX.Y by polycondenstation of linear aliphatic diamines where PAX.Y is selected from the group consisting of PA 10,12; PA 6,18; PA 10,14; and PA 12.12, reacted with polyether PE blocks in the presence of a catalyst to produce a block copolymer PAX.Y/PE, wherein said PE blocks are either PE diols, or PE blocks comprising NHends. The articles formed are either a fabric, film, sheet, rod, pipe, injection-molded component, or a shoe sole; the copolymer PAX.Y/PE has an improved flexural modulus of at least 300 MPa greater than a copolymer polyamide 12/polytetrametylene with the same size of PA block and with the same size of PE block respectively.

Copolymers comprising polyamide blocks and polyether blocks and having improved mechanical properties

The present invention relates to a block copolymer derived from at least one tetrahydrofuran monomer containingC. The present invention also relates to a method for preparing such a block copolymer.

Block copolymer derived from renewable materials and method for making such block copolymer

The invention relates to a segmented block copolymer including polyamide blocks, polyester blocks and polyether blocks, of general formula: (I) -[BD-BM]- in which: BD or hard block is a polyamide block; BM or soft block represents a mixture of polyether blocks and polyester blocks; and n is the number of -BD-BM- units in said copolymer, characterized in that the percentage of polyether blocks (PE blocks) is strictly higher than 15 wt % of said copolymer, and in that said polyester blocks (PES blocks) have a glass transition temperature Tbelow 10&#xb0; C.

Polyamide, polyester and polyether block copolymer

The invention relates to a mixture comprising by weight, to give a total of 100%, 99-10% a polyamide block and polyether block copolymer (A) predominately consisting of lauryl lactam radicals, 1-99% at least on type of polymer (B) selected from polyamides other than polyamide 12, copolyamides which do not consist of the lauryl lactam radicals and the polyamide block and polyether block copolymers whose polyamide blocks do not predominantly consist of the lauryl lactam radicals. The articles, for example, films, foils, strings and tubes made from the inventive mixture are also disclosed.

Growing community of inventors

Rouen, France

Frederic Malet