Bis(2,5-diisocyanato-4-methylphenyl)phenylmethane
Bis(2,5-diisocyanato-4-methylphenyl)phenylmethane ??
??
Bis(2,5-diisocyanato-4-methylphenyl)phenylmethane C??? ??, ??, ??
Bis(2,5-diisocyanato-4-methylphenyl)phenylmethane ?? ?? ? ???
???
?? ??
Bis(2,5-diisocyanato-4-methylphenyl)phenylmethane ?? ??
???( 0)?? ??
