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AssigneeDeutsche Gold- und Silber-Scheideanstalt vormals Roessler
InventorsPeter Werle, Hans Graf, Erwin Walter
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There is disclosed a process for the production of a pigment-synthetic resin concentrate containing an organic solvent soluble polymer and carbon black having quicker distributability in organic media such as lacquer binding media, printing inks, etc., such concentrates being especially suitable for the production of molded parts, castings, films and/or synthetic fibers, the process comprising continuously homogenizing in a mixer powdery pigment and powdery synthetic resin jointly with an organic solvent in a given case also containing plasticizer, stabilizer and/or dispersing acid, dispersing the pigment in the mixture, removing the solvent from the dispersion, comminuting the resulting pigment-synthetic resin concentrated and grinding the product.
In a process for the production of a pigment-synthetic resin concentrate containing an organic solvent soluble polymer and carbon black having rapid distributability in organic solvent media, the improvement consisting essentially of continuously homogenizing in a mixer (1) a carbon black containing pigment powder and (2) an organic solvent soluble synthetic resin with (3) an organic solvent for said synthetic resin as the sole solvent and in an amount sufficient to dissolve the synthetic resin, dispersing the pigment in the mixture, removing the solvent from the dispersion by drying and comminuting the resulting pigment-synthetic resin concentrate.
In a process for the production of a pigment-synthetic resin concentrate containing an organic solvent soluble polymer and carbon black having rapid distributability in organic solvent media, the improvement consisting essentially of continuously homogenizing in a mixer (1) a carbon black containing pigment powder and (2) an organic solvent soluble synthetic resin with (3) an organic solvent, said organic solvent consisting of a solvent for said synthetic resin and being present in an amount sufficient to dissolve the synthetic resin, dispersing the pigment in the mixture, removing the solvent from the dispersion by drying and comminuting the resulting pigment-synthetic resin concentrate.
Dependencies are inferred from the claim text.