Latex of vinyl chloride copolymers with two populations of...

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

400/6549, 117/47

C08L 27/06 (2006.01) C08F 14/06 (2006.01) C08F 259/04 (2006.01)

Patent

CA 2207669

The invention concerns a latex of vinyl chloride copolymers, with two populations of particles. The particles consist of a core with a vinyl chloride copolymer base; a first layer made up of vinyl chloride copolymers with at least one monomer, either an alkyl (meth)acrylate or a vinyl ester, and possibly a cross-linking or fixing agent; and possibly a second layer with a vinyl chloride polymer base. The invention also concerns the process of manufacturing the latex and its use in the preparation of paints and plasticizer-less plastisols.

L'invention concerne un latex bipopulé de copolymères du chlorure de vinyle, dont les particules sont constituées d'un coeur à base de polymères de chlorure de vinyle, d'une première couche formée de copolymères de chlorure de vinyle avec au moins un monomère, choisi parmi les (méth)acrylates d'alkyle et les esters vinyliques et éventuellement avec un agent de réticulation ou de greffage, et éventuellement d'une deuxième couche à base de polymères de chlorure de vinyle. Elle a également pour objet le procédé de fabrication de ce latex et son utilisation dans la préparation de peinture et de plastisols sans plastifiant.

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