Color steel sandwich board glue is a mixture of vinyl and white plastic, resulting in a chemical reaction caused by sticky. Does anyone know the chemical name of black gelatin? Vinyl are basically imported, and that how is the deployment of white plastic? Is the sandwich used in the sandwich plate diluted? That color steel PU foam with the glue is not the same black and white glue generated reaction? Hope to receive professional mention.
Black material for the rough MDI grade 5005 44V20 which PM200 for domestic and so on.
White materials are mostly phthalic anhydride polyester polyols and dichloromethane solvents and catalyst additives.
Vinyl for the polymerization of isocyanate components, and now the domestic is also good, white plastic for the polyol component, the formula I know
