DIN EN ISO 14896:2009-07
Plastics - Polyurethane raw materials - Determination of isocyanate content (ISO 14896:2009); German version EN ISO 14896:2009
| Fecha edición: |
2009-07-01
En Vigor
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| Idiomas disponibles: | Inglés, Alemán |
| Resumen: | This 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. |
| Keywords: | Base materials|Basic materials|Chemical analysis and testing|Concentration|Definitions|Determination of content|Isocyanates|Mathematical calculations|Measurement|Measuring techniques|Methods of analysis|Plastics|Polyurethane|Raw materials|Reagents|Test report |
| ICS: | 83.080.20 - Materiales termoplásticos |
| CTN: | |
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Equivalencia Internacional |
Idéntica EN ISO 14896:2009 Idéntica ISO 14896:2009 |
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Reemplazo Normas |
Reemplaza a DIN EN ISO 14896:2002-04 Reemplaza a DIN EN ISO 14896:2008-08 |
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