ISO 8780-2:1990 PDF

Pigments and extenders — Methods of dispersion for assessment of dispersion characteristics — Part 2: Dispersion using an oscillatory shaking machine

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Title (English):

ISO 8780-2:1990

Pigments and extenders — Methods of dispersion for assessment of dispersion characteristics — Part 2: Dispersion using an oscillatory shaking machine

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 5
Publication date:: November 15, 1990
Edition:: ISO IS 8780 edition 1 version 1
ICS:: 87.060.10

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Description (English):

The method is suitable for the preparation of dispersions of several samples in the quality control of pigments. An agreed binder system of low vicosity is used. This method is restricted to low-viscosity mill bases allowing free movement of the grinding spheres. It is not suitable for optimizing mill base formulations for other dispersing techniques.

Technical details

Technical committee: ISO/TC 256 - Pigments, dyestuffs and extenders
SKU: ISO 8780-2:1990

Abstract

Overview

ISO 8780-2:1990 specifies a laboratory method for preparing and assessing pigment and extender dispersions using an oscillatory shaking machine. Intended primarily for quality control, the method uses an agreed low‑viscosity binder system and small mill bases so grinding spheres can move freely. It minimizes solvent loss by testing several small batches simultaneously in a closed holder and is restricted to low‑viscosity mill bases - it is not suitable for optimizing formulations for other dispersing techniques.

Key topics and technical requirements

Scope: Dispersion preparation for quality control of pigments and extenders; read in conjunction with ISO 8780-1 (Introduction).
Apparatus: Paint‑conditioning (shaking) machine running at ~680–690 reciprocating strokes/min, 16 mm stroke, ±15° oscillation; a multi‑position holder; matching containers and grinding spheres.
Containers & volumes: Containers must be identical and agreed between parties; mill base should occupy ~30% of container volume.
Grinding spheres: Use same type, mean diameter and density for all samples in a series. Example: glass spheres ~3.0 mm ±0.5 mm, density ~2.6 g/cm3 ±0.2 g/cm3. Apparent sphere volume ~50% of container.
Mill base composition: Binder system (binder + solvent + concentration) is agreed and recorded; viscosity must permit free movement of spheres. Example pigment concentrations (starting points):
- Low binder demand: >40% (m/m)
- Medium binder demand: 10–40% (m/m)
- High binder demand:

Related standards

Mentioned in the description and other ISO standards

Overview

Key topics and technical requirements

Scope: Dispersion preparation for quality control of pigments and extenders; read in conjunction with ISO 8780-1 (Introduction).
Apparatus: Paint‑conditioning (shaking) machine running at ~680–690 reciprocating strokes/min, 16 mm stroke, ±15° oscillation; a multi‑position holder; matching containers and grinding spheres.
Containers & volumes: Containers must be identical and agreed between parties; mill base should occupy ~30% of container volume.
Grinding spheres: Use same type, mean diameter and density for all samples in a series. Example: glass spheres ~3.0 mm ±0.5 mm, density ~2.6 g/cm3 ±0.2 g/cm3. Apparent sphere volume ~50% of container.
Mill base composition: Binder system (binder + solvent + concentration) is agreed and recorded; viscosity must permit free movement of spheres. Example pigment concentrations (starting points):
- Low binder demand: >40% (m/m)
- Medium binder demand: 10–40% (m/m)
- High binder demand:

ISO 8780-2:1990 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

Related standards

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