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method for preparing a non pyrofoor, fijnverdeeld carbide of an element from group iii, iv, v or vi of the periodic system.
method for preparing a non pyrofoor, fijnverdeeld carbide of an element from group iii, iv, v or vi of the periodic system.
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机译:制备周期系统第iii,iv,v或vi族元素的非火成,高屈服碳化物的方法。
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摘要
The invention concerns novel bis-azoles of the general formula WHEREIN R is a para-phenylene radical which may be substituted and A1 and A2 are benzo radicals which may be substituted.
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