406597

Poly[(phenyl isocyanate)-co-formaldehyde]

average M_n ~400

• Sinónimos: PMDI, Polymethylene polyphenyl isocyanate
• Fórmula lineal: [C₆H₃(NCO)CH₂]_n
• Número de CAS: 9016-87-9
• Número MDL: MFCD00072953
• Código UNSPSC: 12162002
• ID de la sustancia en PubChem: 24865388

Propiedades

• densidad de vapor: 8.6 (vs air)
• formulario: liquid
• actividad específica: ~3.2 isocyanate groups/molecule
• mol peso: average M_n ~400
• índice de refracción: n20/D 1.634
• viscosidad: 1,800 cP(25 °C)(lit.)
• bp: 392 °C/5 mmHg
• densidad: 1.2 g/mL at 25 °C (lit.)
• cadena SMILES: [H]C([H])=O.O=C=Nc1ccccc1

Descripción

Descripción general

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.

Aplicación

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.

Características y beneficios

High viscosity, high functionality oligomer.

Información de seguridad

• Pictogramas: GHS08,GHS07
• Palabra de señalización: Danger
• Frases de peligro: H315,H317,H319,H332,H334,H335,H351,H373
• Consejos de prudencia: P202 - P260 - P280 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• Clasificaciones de peligro: 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
• Órganos de actuación: Respiratory system, Respiratory system,Eyes,Lungs
• Código de clase de almacenamiento: 10 - Combustible liquids
• Clase de riesgo para el agua (WGK): WGK 1