Arkema France

Elf Atochem S.a.

Arkema Inc.

Atofina

Other

Zotefoams, Plc

Michael Werth

Fabrice Chopinez

Ramin Amin-Sanayei

Gilles Hochstetter

Thibaut Montanari

Philippe Blondel

Gregory Scott O'Brien

Anthony Bonnet

Olivier Julien

Karine Triballier

Bernard Jacques

Thierry Briffaud

Scott R Gaboury

Saeid Zerafati

Patrick Dang

Patrick Douais

Didier Juhue

Bernard Pees

Jean-Marc Sage

Frederic Malet

Walter Phillip Kosar

Eric Gamache

Paul M Jacobs

Frédéric Malet

Neil Witten

Bruno D'Herbecourt

Barbara Ramfel

Thierry Pascal

Roger Lock

Arnaud Tedoldi

Michaela Steng

Perrine Babin

Yves Lermat

Heike Faulhammer

Ophelie Rousseau

Pascal Sebire

Benoit Andre

Benoît Andre

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 multilayer pipe which comprises (in the following order, from the inside of the pipe outwards):

Multilayer pipe for transporting water or gas

The invention relates to a method for the impregnation of continuous fibers that comprises coating said fibers with a polymer matrix containing: (a) at least one fluorinated polymer grafted with at least one carboxylic polar function and (b) optionally at least one fluorinated nongrafted polymer. The invention also relates to the composite fibers that can be obtained by said method and to the use thereof.

Method for impregnating continuous fibres with a composite polymer matrix containing a grafted fluorinated polymer

The invention relates to a coating composition comprising a radiation grafted functionalized fluoropolymer. This coating is preferably, in the form of a powder coating. The coating can be used on inorganic substrates, especially un-primed metals. The invention also relates to the coated inorganic substrate and to the use of the coating composition to protect the inorganic substrate, especially from corrosion.

Coating compositions for inorganic substrates

The invention concerns a conductive composition comprising (by weight): 30 to 60 parts of a fluid PVDF; 25 to 62 parts of a viscous PVDF; 8 to 13 parts of a conductive filler; 0 to 2 parts of a fire retardant agent; 0 to 0.05 parts of a nucleating agent, based on a total of 100 parts. Preferably, it comprises by weight: 35 to 50 parts of a fluid PVDF; 45 to 55 parts of a viscous PVDF; 8 to 13 parts of a conductive filler; 0 to 2 parts of a fireproof agent; 0 to 0.05 parts of a nucleating agent, based on a total of 100 parts. Preferably, the conductive composition has a viscosity in the molten state at 230&#xb0; C. of less than 10Pa&#xb7;s, preferably between 10and 10Pa&#xb7;s. The invention also concerns multilayer structures combining the conductive composition and a thermoplastic polymer or a metal.

PVDF-based conductive composition

The present invention relates to a method for radiation grafting a compound by irradiation, that can be grafted onto a fluoropolymer, so as to prevent destabilization of the fluorinated polymer. Said method comprises the following steps: a) the fluoropolymer is mixed in the melted state thereof with a graftable compound; b) the mixture obtained in a) is converted into films, plates, granulates or powder; c) the products from step b) are subjected to photonic (&#x3b3;) or electronic (&#x3b2;) irradiation in a dose of between 0.5 and 15 Mrad; and d) optionally, the products from step c) are washed and/or a degassed. According to said method, a stabilizing agent is added to the fluorinated polymer. Said stabilizing agent can be an antioxidant, a graftable metal salt, or a combination of the two. The invention also relates to structures comprising at least one layer of said mixtures and at least one layer of another material, and to the use of said structures to obtain a barrier effect. Said structures act as a barrier to a plurality of fluids, especially to petrol and to air-conditioning fluids, and can take the form of bottles, tanks, containers, pipes, and all kinds of recipients. They can also be transformed into films used to produce packaging.

Method for grafting a fluorinated polymer and multilayer structures comprising said grafted fluoropolymer

The present invention relates to a process for grafting an unsaturated monomer onto a fluoropolymer, having the steps of: Structures made with these materials are barriers to many fluids and in particular to petrol and to air-conditioning fluids and may be formed into bottles, tanks, containers, pipes, hoses and vessels of all sorts. They may also be converted into films with which packaging is made.

Process for grafting a fluoropolymer and multilayer structures comprising this grafted polymer

Polyamide-based composition for flexible pipes containing oil or gas

The invention relates to a self-adhesive powder composition with improved resistance to creep, based on thermoplastic and/or heat-curable resins and acicular calcium carbonate. The composition is applied in powder form onto a metal substrate and then a creep-resistant coating is obtained by melting the powder.

Composite material comprising a self-adhesive composition coating layer

The invention relates to a method of preparing polyamides, in which, in a first step, the anionic polymerization of at least one lactam is carried out and then, in a second step, a heat treatment is carried out on the polymer obtained, which has a distribution of the molar masses measured by SEC having a shape close to a Gaussian curve with a high-mass tail, at a high enough temperature and for a long enough time so as to obtain a unimodal distribution of the molar masses.

Method of manufacturing polyamides

Moisture-resistant barrier material based on copolyamide PA-6, I/6, T/6, 6 and/or PA-6, I/6, T which is capable of being processed by drawing and/or thermoforming

The invention relates to porous silicas in which the pores are at least partially filled with polyamide resins. They can be employed as additives to liquid paints, as carriers for pigments and/or dyes, as antiblocking agents for folded or wound films made of olefinic material and in cosmetic, pharmaceutical and/or dermatological compositions.

Modified porous silica, process for its manufacture and its use in

Colpolyamides resulting from the polycondensation of a mixture of (a) dodecanelactam (L12) or of 12-aminododecanoic acid (A12) and of (b) 11-aminoundecanoic acid (A11) are characterized in that the monomer L12 or A12 represents 1 to 15% or 85 to 99% by weight of the mixture, and the copolyamides have melting points (mp) as a function of the composition, the units originating from the monomer A12 and L12 being in a majority or minority respectively:

Copolyamides and polyamide compositions, process of manufacture and

Pulverulent polyamide composition for the coating of metal substrates

Growing community of inventors

Bernay, France

Michael Werth