| http://www.w3.org/ns/prov#value | - The PACM isomer mixtures can be obtained by the hydrogenation of methylenedianiline and/or by fractional crystallization of PACM isomer mixtures in the presence of water and alcohols such as methanol and ethanol.Additional aliphatic and cycloaliphatic diisocyanates that may be used include 3-isocyanato-methyl-3,5,5-trimethyl cyclohexyl-isocyanate (IPDI) from Arco Chemical, which has the followin
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