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download between 0-24 hoursReleased: 1990
ISO 8781-2:1990
ISO 8781-2:1990-Pigments and extenders-Methods of assessment of dispersion characteristics
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Standard´s number: | ISO 8781-2:1990 |
Pages: | 3 |
Edition: | 1 |
Released: | 1990 |
DESCRIPTION
ISO 8781-2:1990
The method is of general use for comparing similar pigments, for example a test pigment against an agreed reference pigment. The pigment is dispersed in stages under specified conditions in an agreed binder system. After each stage, a portion of the mill base is taken and its fineness of grind is determined as described in ISO 1524. The fineness-of-grind values are plotted graphically as a function of the dispersion work done (expressed as time, number of revolutions, etc.). From the graph, the work necessary to obtain an agreed fineness of grind is determined.