POLYMERIC MDI
Chemical Name: Polymethylene Polyphenyl Polyisocyanate
CAS No.9002-86-2
MF:CH2-CHCl-]n
EINECS No.208-750-2
Place of Origin:China,Korea
Polymeric MDI is generally used in manufacturing hard and semi-hard polyurethane foam.Polymeric MDI is liquefied in normal temperature and easily handled and stored down to -20ºC . It is solvent-free form with2.7 average organic function and maximum of 220cps(25ºC) viscosity which is mixed with monomer MDI of 4,4-diphenyl m-ethane diisocyante and its oligomer above dimer,trimer and tetramer.
Isocyanates MDI is extensively application in most of field, such as thermal insulation rigid foam, PU coating, PU adhesive, Seepage-proofing, structure foam, Automobile bumper, high resilience etc. With good performance such as very good fluidity, very good foaming capacity, strength well, dimension stability etc.
Product Parameters
| Grade No. | Appearance | -NCO Content (%) | Average Functionality | Viscosity (25ºC,mpa.s) | Density (25ºC) (g/cm3) | Acidity (%) |
| PM200 | Brown Liquid | 30.2-32.0% | 2.6-2.7 | 150-250 | 1.22-1.25 | ≤0.05 |
| M-20S | Brown Liquid | 30.5-31.5% | 2.7 | 170-230 | 1.22-1.24 | ≤0.04 |
| 44V20L | Brown Liquid | 30.5-32.5% | 2.6-2.7 | 160-240 | 1.22-1.24 | ≤0.04 |
| PAPI 27 | Brown Liquid | 30.9-32.1% | 2.7 | 150-220 | 1.22-1.24 | 0.015-0.025 |
| M-200 | Brown Liquid | 30.8-31.8% | 2.7 | 150-250 | 1.22-1.24 | ≤0.04 |
| PAPI 135 | Brown Liquid | 30.9-32.1% | 2.7 | 150-220 | 1.22-1.24 | 0.015-0.025 |
Packing
250kg/drum, 1250kg/IBC
Shelf Life
6 Months-12 Months From Manufacturer Date
Storage
Polymeric MDI is supplied in tank cars,tank trucks, and drums. Once a container has been opened, care should be taken to exclude moisture. The most favorable temperature for storage is 15-35°C. If stored at higher temperatures, or if moisture is not excluded, an undesirable increase in viscosity will occur. Below 15°C, the product becomes difficult to pump and pour. Below 0°C, crystallization may occur.
Shelf life is 6 months if the temperature is maintained at 15-35°C and moisture is excluded
