406597

Poly[(phenyl isocyanate)-co-formaldehyde]

average M_n ~400

• Sinônimo(s): PMDI, Polymethylene polyphenyl isocyanate
• Fórmula linear: [C₆H₃(NCO)CH₂]_n
• Número CAS: 9016-87-9
• Número MDL: MFCD00072953
• Código UNSPSC: 12162002
• ID de substância PubChem: 24865388

Propriedades

• densidade de vapor: 8.6 (vs air)
• forma: liquid
• atividade específica: ~3.2 isocyanate groups/molecule
• peso molecular: average M_n ~400
• índice de refração: n20/D 1.634
• viscosidade: 1,800 cP(25 °C)(lit.)
• pb: 392 °C/5 mmHg
• densidade: 1.2 g/mL at 25 °C (lit.)
• cadeia de caracteres SMILES: [H]C([H])=O.O=C=Nc1ccccc1

Descrição

Descrição geral

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.

Aplicação

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 e benefícios

High viscosity, high functionality oligomer.

Informações de segurança

• Pictogramas: GHS08,GHS07
• Palavra indicadora: Danger
• Frases de perigo: H315,H317,H319,H332,H334,H335,H351,H373
• Declarações de precaução: P202 - P260 - P280 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• Classificações de perigo: 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
• Órgãos-alvo: Respiratory system, Respiratory system,Eyes,Lungs
• Código de classe de armazenamento: 10 - Combustible liquids
• Classe de risco de água (WGK): WGK 1