HDI closed TOSOH BI-301 ABOUT:  Coronate® BI-301, in the form of a pale yellow to brownish flakes, is an isocyanate that is masked with blocking agents (E-caprolactam and phenol). This blocked isocyanate can be applied as baking finishes for coil coatings, wire, rubber, plastics, metals, and more. Storage and Transportation: STORAGE: It is recommended to store...