406597

Poly[(phenyl isocyanate)-co-formaldehyde]

average M_n ~400

• Sinonimo/i: PMDI, Polymethylene polyphenyl isocyanate
• Formula condensata: [C₆H₃(NCO)CH₂]_n
• Numero CAS: 9016-87-9
• Numero MDL: MFCD00072953
• Codice UNSPSC: 12162002
• ID PubChem: 24865388

Proprietà

• Densità del vapore: 8.6 (vs air)
• Forma fisica: liquid
• Attività specifica: ~3.2 isocyanate groups/molecule
• PM: average M_n ~400
• Indice di rifrazione: n20/D 1.634
• Viscosità: 1,800 cP(25 °C)(lit.)
• P. eboll.: 392 °C/5 mmHg
• Densità: 1.2 g/mL at 25 °C (lit.)
• Stringa SMILE: [H]C([H])=O.O=C=Nc1ccccc1

Descrizione

Descrizione generale

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.

Applicazioni

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.

Caratteristiche e vantaggi

High viscosity, high functionality oligomer.

Informazioni sulla sicurezza

• Pittogrammi: GHS08,GHS07
• Avvertenze: Danger
• Indicazioni di pericolo: H315,H317,H319,H332,H334,H335,H351,H373
• Consigli di prudenza: P202 - P260 - P280 - P302 + P352 - P305 + P351 + P338 - P308 + P313
• Classi di pericolo: 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
• Organi bersaglio: Respiratory system, Respiratory system,Eyes,Lungs
• Codice della classe di stoccaggio: 10 - Combustible liquids
• Classe di pericolosità dell'acqua (WGK): WGK 1