Standard Test Method for Polyurethane Raw Materials: Determination of Dimer Ratio in Pure MDI

Importancia y uso:

5.1 This test method can be used for research or for quality control to determine the dimer ratio of Pure MDI.

5.2 Uretidinedione begins forming in Pure MDI with the rate of formation increasing with increasing temperature. High levels can affect the appearance of Pure MDI and the quality of products made from it.

Subcomité:

D20.22

Volúmen:

08.03

Número ICS:

83.040.10 (Latex and raw rubber)

Palabras clave:

FTIR; infrared; IR; dimer; polyurethane raw material; Pure MDI; uretidinedione; monomer; methylene-4,4’- di(phenylisocyanate); MDI;