Norm

NEN-EN-ISO 14896:2009 en

Kunststoffen - Polyurethaan ruwe materialen - Bepaling van het isocyanaatgehalte

52,53

Over deze norm

Status Definitief
Aantal pagina's 9
Commissie Kunststoffen
Gepubliceerd op 01-03-2009
Taal Engels
This lnternational Standard specifies two methods for the measurement of the isocyanate content of aromatic isoocyanates used as polyurethane raw materials. Method A is primarily applicable to refined toluene diisocyanate (TDI), methylene-bis-(4-phenylisocyanate) (MDI) and their prepolymers. Method B is applicable to refined, crude or modified isocyanates derived from toluene diisocyanate, methylene-bis- (4-phenylisocyanate) and polymethylene polyphenylisocyanate. It can also be used for isomer mixtures of toluene diisocyanate, methylene-bis-(4-phenylisocyanate) and polymethylene polyphenylisocyanate. Other aromatic isocyanates may be analysed by this method if precautions are taken to verify suitability. It is not applicable to blocked isocyanates.

Details

ICS-code 83.080.10
Nederlandse titel Kunststoffen - Polyurethaan ruwe materialen - Bepaling van het isocyanaatgehalte
Engelse titel Plastics - Polyurethane raw materials - Determination of isocyanate content
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