Polymeric M20s for Rigid PU Foam

• Material: Polyurethanes/PU
• Usage: General Plastics
• Plastic Properties After Heated: Thermoplastic Plastics
• Plastic Forming Method: Blow Molding
• Color: Black
• Transport Package: 250kg/Drum
• Model NO.: M20S
• Specification: Iron Drum
• Trademark: Mitsui
• Origin: Korea
• HS Code: 3909310000
• Production Capacity: 100000mt/Year

Product Description

POLYMERIC M20S
Application
M20S is a diisocyanate-diphenylmethane(MDI)-based composition containing some higher functionality isocyanates. The functionality is about 2.6-2.7. It is abrown liquid at ambient temperatures.
M20S can be widely used in the production of rigid PU foam heat-insulating materials; also used in isocyanurate foam, paints, adhesives, structural foam,cellular integral skin foam, automotive bumper and interior parts, high-resilience foam and synthetic wood, etc. Due to its unique composition structure, M20S can provide better flowability. It is, therefore, particularly suitable for the production which require strict flowability of systems.
Typical Physical and Chemical Properties

Test Item(s)	Specification(s)
Appearance	Brown Liquid
Viscosity at 25ºC, mPa.S	150-250
NCO, %	30.5-32.0
Density 25ºC, g/cm3	1.220-1.250
Acidity (HCl), %	≤0.05
Hydrolysable Chlorine, %	≤0.2

Package(s)  210L iron drums, 250kg/drum
Storage
Since M20S is a reactive chemical, reaction with atmospheric moisture happens easily and leads to the formation of insoluble ureas and carbon dioxide gas, which can result in pressure build-up in closed containers and viscosity increase of the product.Containers must therefore be absolutely dry and carefully sealed after congested with nitrogen.
Containers of M20S should be kept properly closed and stored indoors at ambient temperature (15-35ºC) in a well-ventilated area. Storage at low temperature (below5ºC) may lead to some crystallization; this material must, therefore, be protected from frost.If crystallization does occur, the material should be heated by rolling the drum in a hot air oven at 70-80ºC to melt it out, and should then be thoroughly agitated before use. Melting in a water bath is not recommended.
Extended storage at temperatures above 50ºC is not recommended to prevent from the formation of insoluble solids and viscosity increase.
Shelf Life
Under recommended storage conditions, the shelf life of WANNATE^® M20S is one year since the date of production.

The above information is for reference only. The specific value still provided by  the manufacturer. Our company is not responsible for any legal liability.