Coloured polymer system with improved elasticity

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 151/00 (2006.01) C08F 2/22 (2006.01) C09D 5/29 (2006.01)

Patent

CA 2608524

The invention relates to a method for improving the elasticity of a coloured polymer system, made up of a matrix and discrete polymer particles, distributed in the matrix according to a defined 3D lattice, obtained by production of a film of an emulsion polymer with a core/shell construction, whereby the emulsion polymer is obtained by polymerisation of monomers in at least one first stage (core monomers) and subsequent polymerisation of monomers in at least one further second stage (shell monomers), characterised in that the monomers of the core have a content of at least 5 wt. % of monomers with a glass transition temperature of less than 0~C.

Procédé destiné à améliorer l'élasticité d'un système polymère coloré qui est constitué d'une matrice et de particules polymères distinctes réparties dans la matrice selon une structure de réseau spatial et qui est obtenu par application d'un film sur un polymère d'émulsion à structure noyau / coque. Ledit polymère d'émulsion peut être obtenu par polymérisation de monomères dans au moins une première étape (monomères du noyau), puis par polymérisation de monomères dans au moins une deuxième étape (monomères de la coque). Ledit procédé est caractérisé en ce que les monomères du noyau sont constitués à raison d'au moins 5 % en poids de monomères ayant une température de transition vitreuse inférieure à 0 °C.

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