hdi closed bassington bl-7982 properties: bi 7982 is a closed aliphatic pu bridge agent for single component light stabilized baking coatings. bi 7982 is a trimer of hdi for coil coating and electrodeposition (ed) coating. specification: appearance : transparent low viscosity liquid nco content : 10.2% (calculated value) nco equivalent weight ：410(calculated value) viscosity @25℃ :...