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ISO 8781-1:1990

Current Revision

Pigments and extenders - Methods of assessment of dispersion characteristics - Part 1: Assessment from the change in tinting strength of coloured pigments

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Relates to coloured pigments which have been dispersed by one of the methods described in ISO 8780. The method is of general use for comparing similar pigments, for example a test pigment against an agreed reference pigment. The principle consists in dispersing the pigment in stages under specified conditions in an agreed binder system. After each dispersion stage, a portion of the mill base is taken and mixed separately with a white pigment to form a reduced paste. The tinting strength of each reduced paste is determined as described in ISO 787-24. The percentage increase in tinting strength between two dispersion stages is calculated in order to assess the ease of dispersibility of the pigment.


SDO ISO: International Organization for Standardization
Document Number ISO 8781
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 35/SC 2/WG 7
Publish Date Document Id Type View
Not Available ISO 8781-1:1990 Revision