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VORANATE™ M 647 Polymeric MDI

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A dark-brown, intermediate viscosity polymethylene polyphenylisocyanate of high reactivity, a total isocyanate content of about 30.9% and an average functionality of 2.85. It was specifically designed for use in the production of both PUR and PIR rigid (continuous and discontinuous) block foams. The slightly higher functionality and intermediate viscosity of this as compared with VORANATE™ M 580 also makes it ideal for certain continuous and discontinuous laminating processes. The increased functionality promotes improved foam cure, excellent strength properties and better dimensional stabilities.

Properties

These values are not intended for use in preparing specifications.

Typical Properties

% NCO Yes No 30.9 %
Average Dynamic Viscosity (cP) Yes No 600
Nominal Functionality Yes No 2.85