abstract |
The present invention achieves Class I ratings as measured by the modified ASTM E-84 tunnel test and can be applied to the interior walls of electrical cabinets, architectural decoration moldings, and vehicles, without the trimethylolpropane-based polyol, chlorofluorocarbon / A flame retardant polyurethane foam made from a blowing agent that does not contain hydrogenated chlorofluorocarbons is provided. |