Arkema France

Alain Boone

Isabelle Betremieux

Jean-Yves Loze

Reinhard Linemann

Gregory A Delmas

Patricia Beurdeley

Jerome Mazajczyk

Claire Chambat

Chantal Roidot

Jérôme Mazajczyk

Grégory Delmas

Frédéric Fournier

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 aqueous coating compositions based on an aqueous polymer dispersion as binder, having high performance levels of resistance to stains and dirt without specialist functional monomers. Said aqueous polymer dispersion having an MFFT between 0 and 50&#xb0; C. comprises polymer particles obtained by emulsion polymerization in at least two steps with at least two polymer phases P1 and P2, P1 representing from 75 to 90% by weight of P1+P2 having a Fox Tg1 from 0 to 40&#xb0; C. and P2 having a Fox Tg2 from 0 to 40&#xb0; C., said polymer P2 representing from 10 to 25% by weight of the sum of polymers P1 and P2 and having a calculated Hansch parameter &#x3c;2.0 and at least one ethylenically unsaturated monomer bearing an acetoacetoxy and/or amine or ureido functional group, said acetoacetoxy and/or amine or ureido functional group being borne by the external surface of P2 phase.

Coatings having improved resistance to stains and dirt

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

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

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Verderonne, France

Alain Boone