h12mdi has high barriers. chemical is the only company in china.
the relative molecular mass of h12mdi is 262∙35. it is similar to mdi in chemical structure. it replaces the benzene ring with a cyclohexyl six-membered ring and is an alicyclic diisocyanate. compared with hdi and ipdi, the polymerization reaction speed of h12mdi and hydroxyl compounds to produce polyurethane products is slower. this is because the…
