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专利名称：CATALYTIC PREPARATION OF AROMATIC
ISOCYANATES
发明人：ERIC SMITH申请号：US36520D申请日：19690203公开号：US36520A公开日：19720905
摘要：The process for preparing an organic isocyanate by reacting an organic nitrocompound with carbon monoxide in the presence of a catalyst system comprising a halideof a noble metal and a heterocumulene compound having the formula: R N X Y)nWHEREIN R is an aryl moiety, X is C or S; Y is O, S or NR where R has the same meaning aspreviously described; n is an integer of from 1 to 2 inclusive and with the proviso thatwhen Y is S, then X is C. Especially useful heterocumulene compounds include compoundsof the formula:
申请人：OLIN MATHIESON CHEM. CORP.
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