Process for manufacturing stopping compounds and use of the...

C - Chemistry – Metallurgy – 08 – J

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C08J 3/11 (2006.01) B01F 3/14 (2006.01) B02C 17/16 (2006.01) C08J 3/20 (2006.01) C09D 5/34 (2006.01)

Patent

CA 2089501

Process for manufacturing filling compounds, in particular such as can be used for motor vehicle repair lacquering, in which in a first stage at least 90 wt.-% of the solvents required and 80 to 100 wt.-% of the binding agents required are dispersed together with such a proportion of the pigments and/or extenders as is required in order to ensure that the mixture can be dispersed in a high-speed agitator mill, as well as optionally together with the required additives in a high-speed agitator mill, in particular a bead mill or sand mill, whereupon the dispersed material produced is, in a second stage, mixed with the remaining amounts of pigment and/or extender as well as optionally the remaining amounts of binding agent and solvent and dispersed in a dissolver to the required fineness.

Procédé pour préparer des composés de charge, en particulier du type qu'on peut utiliser pour les retouches à la peinture-laque de véhicules automobiles, dans lequel au cours d'une première étape au moins 90 % en poids des solvants requis et 80 à 100 % en poids des liants requis sont dispersés ensemble avec la proportion voulue de pigments et/ou de matières de charge pour s'assurer que le mélange peut être dispersé dans un agitateur à haute vitesse, ou encore avec les produits d'addition nécessaires dans un agitateur à haute vitesse, en particulier un agitateur à billes ou à sable, après quoi le produit dispersé est, lors d'une deuxième étape, mélangé avec les quantités restantes de pigment et/ou de matière de charge et, si l'on veut, avec les quantités restantes de liant et de solvant, et dispersé dans un dilueur au degré de finesse voulu.

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