Elf Atochem S.a.

Arkema France

Atofina

Cray Valley Sa

Isabelle Betremieux

Christian Dousson

Jean-Yves Loze

Christophe Verge

Alain Boone

Bruno Feret

Philippe Marcq

Jean-Jacques Flat

Karine Loyen

Patrick Alex

Pierre Nogues

Leo Mario Saija

Reinhard Linemann

Frank Cogordan

Gregory A Delmas

Aurélie Pierre

Nathalie Meeschaert

Christophe Dumousseaux

Martine Schneider

Baudouin Duque

Olivier Nouguerede

Olivia Allorant

The invention relates to an aqueous dispersion of polymer, based on structured polymer particles, said particles comprising a core polymer phase, based on a polymer P1 with Tg1 ranging from 60 to 120&#xb0; C., a second polymer phase enveloping said core, based on a polymer P2 with a Tg2 ranging from &#x2212;60 to 40&#xb0; C. and a third outer polymer phase (or shell) based on a polymer P3, with a Tg3 ranging from Tg2&#x2212;5&#xb0; C. to Tg2+5&#xb0; C. and having an Mn not exceeding 150 000, with the weight contents of said polymers P1, P2 and P3 being, relative to the total weight of polymer (P1+P2+P3): P1 from 5% to 60%, P2 from 40% to 85%, P3 from 5% to 25% with the sum of said weight contents being 100%.

Aqueous dispersion of polymer made from multistructured particles for aqueous wall coatings resistant to dirt and wet abrasion

The invention relates to a crosslinkable or non-crosslinkable aqueous dispersion of polymer, based on structured polymer particles, said particle comprising a core polymer phase, based on a polymer P1 with Tg1 ranging from 60 to 120&#xb0; C., a second polymer phase enveloping said core, based on a polymer P2 with a Tg2 ranging from &#x2212;60 to 40&#xb0; C. and a third outer polymer phase (or shell) based on a polymer P3, with a Tg3 greater than Tg2 not exceeding 120&#xb0; C. and having a measured Mn of from 1000 to 150 000, with the weight contents of said polymers P1, P2 and P3 being relative to the total weight of polymer (P1+P2+P3): P1 from 5% to 60%, P2 from 40% to 85%, P3 from 5% to 25% with the sum of said weight contents being 100%.

Aqueous dispersion of polymer made from multistructured particles for aqueous coatings having improved blocking and fingerprint resistance and hardness

Firstly, the invention concerns an organic resin that comprises structural units in its overall composition obtained from: The invention also concerns an aqueous dispersion of said resin and a preparation process as a cross-linkable aqueous composition comprising said resin or dispersion and a polyamine. The resin is used for the preparation of cross-linked polyurethanes without the use of polyisocyanate, in particular in high performance aqueous coatings.

Organic resin bearing cyclic carbonate groups and aqueous dispersion for crosslinked polyurethanes

The present invention relates to the use of a polymer from the polymerization of 2-octyl acrylate of renewable origin and optionally at least one other monomer, as a binding agent in or for the production of a coating composition.

Use of 2-octyl acrylate polymer as a binding agent in a coating composition

The invention relates to an aqueous polymer dispersion which can be obtained from a mixture of monomers comprising, in parts by weight: The invention also relates to a preparation process, to a coating composition comprising the said dispersion and to a method of use in coatings for metal or plastic substrates, in particular corrosion-inhibiting coatings for metal substrates.

Aqueous polymer dispersion for barrier coating

A process is presented for the preparation of a latex by the emulsion polymerization at a temperature of between 30 and 90 C. of at least one ethylenically unsaturated monomer in the presence of at least one surfactant and of a seed of polymer particles with a diameter of between 200 and 450 nm. The seed particles represent from 5-25% by weight of the total weight of the monomer and seed. The polymerization is initiated by a mixed water-soluble/fat-soluble system. Also included are lattices obtained from this process.

Latex having a high solids content and a low viscosity and exhibiting a bimodal distribution

The invention concerns a method for obtaining an aqueous dispersion of hydrophobic polymers dispersed in the form of particles with mean diameter less than 100 nm stablized soley with a macromolecular surfactant based on low molecular weight styrene/maleic anhydride imide copolymer. The invention also concerns the use of said dispersion for treating and sizing paper.

Hydrophobic cationic dispersions stabilized by low molecular weight maleimide copolymers, for paper sizing

Compositions comprising at least one fluorinated polymer comprising vinylidene fluoride units and at least one nitrile rubber exhibit good mechanical and thermomechanical properties as well as good chemical resistance, in particular good impermeability to hydrocarbons. These compositions are beneficially used in the manufacture of components having at least two layers such as films, pipes, tubes or laminates.

Compositions based on a fluorinated polymer comprising vinylidene fluoride units and on a butadiene-acrylonitrile elastomer

The present invention relates to a one-component system based on coreactive latexes which is able to lead to coatings which are crosslinkable at low temperature and post-crosslinkable by heat treatment, the said system consisting of a mixture of two particle dispersions, (A) and (B), each obtained by aqueous emulsion polymerization of a monomer composition A and B, respectively,

One-component system based on coreactive latexes leading to coating

Vulcanized rubbers modified by thermoplastics

The present invention relates to a one-component system based on coreactive latexes which is able to lead to coatings which are crosslinkable at room temperature and post-crosslinkable by heat treatment, the said system consisting of a mixture of two particle dispersions, (A) and (B), each obtained by aqueous emulsion polymerization of a monomer composition A and B, respectively, (a) at least one free-radically polymerizable ethylenically unsaturated monomer comprising a functional group ##STR1## where X represents O or S, which enters into the monomer composition A; and (b) at least one free-radically polymerizable ethylenically unsaturated monomer comprising a masked aldehyde functional group selected from acetal, mercaptal, mercaptol, dioxolane and dithiolane, which enters into the monomer composition B.

One-component system based on coreactive latexes leading to coatings

Finely particulate composite latices and use thereof in solvent-free

The invention relates to a material including:

EPDM/EPM rubber coated with a polyamide-based film-without adhesive

High-performance overprint varnishes, well-suited for the protective coating of a wide variety of substrates, e.g., papers, cardboards and packaging materials, include a composite latex and characteristically a polyethylene wax emulsion, the composite latex comprising the copolymerizate of at least one hydrophobic monomer within an aqueous solution of a styrene/maleic anhydride resin, the styrene/maleic anhydride resin having a molecular weight ranging from 500 to 5,000 and an acid number of at most 500, and the amount by weight of the styrene/maleic anhydride resin in the copolymerizate ranging from 5% to 50%.

Growing community of inventors

Coye la Foret, France

Isabelle Betremieux