Pojiva pro nátěrové hmoty - Stanovení hydroxylového čísla - Část 1: Titrační metoda bez použití katalyzátoru (Norma k přímému použití jako ČSN).

The information about the standard:

Designation standards: ČSN EN ISO 4629-1
Classification mark: 673041
Catalog number: 500964
Publication date standards: 1.1.2017
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN

Annotation of standard text ČSN EN ISO 4629-1 (673041):

This part of ISO 4629 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