Reference number
ISO 8781-3:1990
ISO 8781-3:1990
© ISO 2024
International Standard
ISO 8781-3:1990
Pigments and extenders — Methods of assessment of dispersion characteristics — Part 3: Assessment from the change in gloss
Edition 1
1990-11
1990-11
ISO 8781-3:1990
16203
Published
(Edition 1, 1990)
This publication was last reviewed and confirmed in 2023.
Therefore this version remains current.
Abstract
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 made into a composition that is applied to a substrate and dried or stoved. The specular gloss of each dried film is determined as described in ISO 2813. The gloss values are plotted graphically as a function of the dispersion stage (expressed for example as time, number of revolutions of a muller). From the graph, the dispersion work necessary to obtain an agreed specular reflection value is determined.
General information
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Status: PublishedPublication date: 1990-11Stage: International Standard confirmed [90.93]
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Edition: 1Number of pages: 4
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Technical Committee :ISO/TC 256ICS :87.060.10
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