Isocyanate (mixture of isomers and oligomers of mdi (metilfenilediizotsianata)). grade "i-bond osb pm 4300". 3 tank containers general emk. 75115 kg. composition: 4.4 dimers trimers and other isomers (2,4 and 4,4 homology mdi) -60% 1% impurity. used when the pro