申请人:NIPPON SHOKUBAI CO., LTD.
公开号:EP0555628A2
公开(公告)日:1993-08-18
A method for preparing isocyanates by the thermal decomposition of carbamates in the presence of a sintered oxide as a catalyst under gaseous phase condition. The sintered oxide is composed of at least one element selected from the group consisting of Boron, Aluminum, Silicon, Tin, Lead, Antimony, Zinc, Yttrium, Lanthanum, Titanium, Zirconium, Niobium, Tungsten, and Iron. The sintered oxide may be composed of at least one element selected from the group consisting of phosphorus, alkali metal element, and alkaline earth metal element.
一种在气相条件下,以烧结氧化物为催化剂,通过氨基甲酸酯的热分解制备异氰酸酯的方法。烧结氧化物由至少一种选自硼、铝、硅、锡、铅、锑、锌、钇、镧、钛、锆、铌、钨和铁的元素组成。烧结氧化物可由至少一种选自磷、碱金属元素和碱土金属元素的元素组成。