4,4′-Disocyanate de diphénylméthane

4,4′-Disocyanate de diphénylméthane

【CAS】101-68-8

Alias: 1,1’-methylenebis(4-isocyanato)-benzene;para,para’-diphenylmethanediisocyanate

Formule moléculaire : C15H10N2O2   Relative molecular mass: 250.25

Formule structurelle :

 

1.Propriété du produit

Light yellow molten solid with a strong irritating odor. Soluble in acetone, benzene, kerosene and nitrobenzene.

2.

 

ParamètresSpécifications
ApparenceLight yellow to brown solid/liquid
Pureté (GC, % en poids)≥ 99.5% (Polymer-grade)
NCO Content (% wt.)33.5 – 33.7 (Pure MDI)
Hydrolyzable Chloride≤ 0,01% (100 ppm)
Acidity (as HCl)≤ 0.002% (20 ppm)
Total Chlorine≤ 0,1% (1000 ppm)
Viscosity (25°C, mPa·s)150 – 250 (Liquid MDI)
Teneur en eau≤ 0,05% (500 ppm)

 

3. Champ d'application et utilisation

The primary products of this item are widely used in polyurethane coatings, and are also applied in waterproof materials, sealing materials, ceramic materials, etc. The polyurethane foam plastics made from this item are used as insulation (cooling) components, building materials, vehicle parts, and ship parts. The refined products can be made into car bumpers, shock absorbers, synthetic leather, non-plastic polyurethane, polyurethane elastic fibers, non-plastic elastic fibers, blister films, adhesives, etc.

4. l'emballage et le stockage

The warehouse should be well-ventilated, kept at a low temperature and dry; items containing water, alcohols and amines should be stored separately.