BS EN ISO 14896:2009
Plastics. Polyurethane raw materials. Determination of isocyanate content
Označení normy: | BS EN ISO 14896:2009 |
Počet stran: | 16 |
Vydáno: | 2009-09-30 |
ISBN: | 978 0 580 65655 2 |
Status: | Standard |
BS EN ISO 14896:2009
This standard BS EN ISO 14896:2009 Plastics. Polyurethane raw materials. Determination of isocyanate content is classified in these ICS categories:
- 83.080.10 Thermosetting materials
This lnternational Standard specifies two methods for the measurement of the isocyanate content of aromatic isocyanates 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.