Water-based marker material and a method of manufacturing...

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 5/00 (2006.01) C08K 3/40 (2006.01) C09D 5/02 (2006.01) C09D 5/36 (2006.01) E01F 9/04 (2006.01)

Patent

CA 2211187

The proposed marker material is intended for use in laying down thick layers of between 1 and 3 mm in thickness and has a low-viscosity colouring substance content of 40-60 wt %. The colouring substance consists of a quick-drying binding agent based on an anion-stabilised emulsion polymer, pigments, powder fillers and standard additives. The remaining weight percentage is accounted for by coarse fillers with a particle diameter of 0.1 mm. The total solids content is approximately 87-93 wt %. The extremely low proportion of volatile substances and the presence of the quick-drying binding agent reduce the drying times of the markings once applied to a fraction of the time required for conventional formulations and prevent cracks from forming.

La présente invention concerne une matière de marquage destinée à la pose de couches épaisses, dont l'épaisseur est d'environ 1 à 3 mm, et qui comporte une proportion de colorant à faible viscosité de 40 à 60 % en poids. Ce colorant est composé d'un liant à séchage accéléré, ayant pour base un polymère en émulsion à anions stabilisés, de pigments, de matières de charge en poudre et d'additifs usuels. Le pourcentage restant du poids est constitué par des charges grossières dont les particules ont un diamètre d'au moins 0,1 mm. La proportion totale de matières solides est de 87 à 93 % en poids. Du fait que la proportion de substances volatiles est extrêmement faible et en raison de la présence du liant à séchage accéléré, les temps de séchage des marquages appliqués ne représentent qu'une fraction du temps nécessaire avec les formulations classiques et ces marquages sont exempts de fissures.

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