This International Standard specifies methods of determining the partial acid value (method A) and the total acid value (method B) of polyester resins and binders for paints and varnishes. It is not applicable to phenolic resins. It is intended to provide quality-control data for the acceptance or rejection of such products in accordance with the terms of a specification, as well as to be used in research and development to monitor the completion of the polycondensation reaction.
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Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
4.1 General
4.2 Method A
4.3 Method B
5 Reagents
6 Apparatus
7 Procedure
7.1 Test portion
7.2 Method A
7.3 Method B
8 Calculation and expression of results
8.1 Calculation for method A
8.2 Calculation for method B
8.3 Expression of results
9 Precision
10 Test report
Annex A Checking the concentration of the standard potassium hydroxide solution (informative)
ISO 3251:1993 Paints and varnishes -- Determination of non-volatile matter of paints, varnishes and binders for paints and varnishes
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
ISO 385-1:1984 Laboratory glassware -- Burettes -- Part 1: General requirements
ISO 3251:1993 Paints and varnishes -- Determination of non-volatile matter of paints, varnishes and binders for paints and varnishes
ISO 3696:1987 Water for analytical laboratory use -- Specification and test methods
ISO 385-1:1984 Laboratory glassware -- Burettes -- Part 1: General requirements
ISO 6353-2:1983 Reagents for chemical analysis -- Part 2: Specifications -- First series