406597

Poly[(phenyl isocyanate)-co-formaldehyde]

average M_n ~400

• Synonyme(s) : PMDI, Polymethylene polyphenyl isocyanate
• Formule linéaire : [C₆H₃(NCO)CH₂]_n
• Numéro CAS: 9016-87-9
• Numéro MDL: MFCD00072953
• Code UNSPSC : 12162002
• ID de substance PubChem : 24865388

Propriétés

• Densité de vapeur: 8.6 (vs air)
• Forme: liquid
• Activité spécifique: ~3.2 isocyanate groups/molecule
• Poids mol.: average M_n ~400
• Indice de réfraction: n20/D 1.634
• Viscosité: 1,800 cP(25 °C)(lit.)
• Point d'ébullition: 392 °C/5 mmHg
• Densité: 1.2 g/mL at 25 °C (lit.)
• Chaîne SMILES: [H]C([H])=O.O=C=Nc1ccccc1

Description

Description générale

Poly[(phenyl isocyanate)-co-formaldehyde] (P-MDI) is a chain extender with one isocyanate group attached to each of the phenyl groups. It is a liquid polymer that is used to maintain uniformity in the cross-linking reaction between different polymeric units during the curing process. Its crosslinking sites (−NCO) allow it to be utilized in the preparation of polyurethanes.

Poly[(phenyl isocyanate)-co-formaldehyde] (PPIF) is an oligomer that can be used as a chain extender and a cross-linker that forms amide linkages (−NCO). It is highly reactive with hydroxyl groups, which facilitate the formation of a polyurethane network.

Application

P-MDI is an isocyanate that can be used in the preparation of polyurethane resins, films and foams. It can form mechanically robust films which are resistant to solvents and can be used as OTFT based electrodes in biomaterials based applications.

PPIF can be blended with a diol to form a polyurethane mixture with characteristic −NCO peaks. It can also be used as a cross-linker to form high tensile dielectric materials for potential application in organic electronics.

Caractéristiques et avantages

High viscosity, high functionality oligomer.

Informations sur la sécurité

• Pictogrammes: GHS08,GHS07
• Mention d'avertissement: Danger
• Mentions de danger: H315,H317,H319,H332,H334,H335,H351,H373
• Conseils de prudence: P202 - P260 - P280 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• Classification des risques: Acute Tox. 4 Inhalation - Carc. 2 - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 2 Inhalation - STOT SE 3
• Organes cibles: Respiratory system, Respiratory system,Eyes,Lungs
• Code de la classe de stockage: 10 - Combustible liquids
• Classe de danger pour l'eau (WGK): WGK 1