International Standard
ISO 4629-1:2016
Binders for paints and varnishes — Determination of hydroxyl value — Part 1: Titrimetric method without using a catalyst
Reference number
ISO 4629-1:2016
Edition 1
2016-06
© ISO 2024
International Standard
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Published (Edition 1, 2016)
This standard was last reviewed and confirmed in 2024. Therefore this version remains current.

ISO 4629-1:2016

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CHF 63
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Abstract

ISO 4629-1:2016 specifies a titrimetric method for determining the free hydroxyl groups in binders and binder solutions for paints and varnishes. The hydroxyl groups may be present as polyhydric alcohols, partial esters, polyester end groups or hydroxylated fatty acids.

This method is not applicable to resins containing both hydroxyl groups and epoxy groups, because the latter will also be included in the result. Also the method is not applicable to cellulose nitrate or to phenolic resins.

NOTE 1 If, in the case of binder solutions, the hydroxyl value of the binder only is to be determined, the possibility that other constituents of the binder solution may contain hydroxyl groups has to be taken into account.

NOTE 2 A method for the determination of the hydroxyl value of epoxy resins is specified in ISO 7142[1].

General information

  • Status
     : Published
    Publication date
     : 2016-06
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 7
  • Technical Committee :
    ISO/TC 35
    ICS :
    87.060.20 
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