| 摘要 |
<p>At least about 5, pref. 8-15 moles of an acid compound (I) not volatilized by warming, is used per mol. of the diazonium salt in light sensitive material for multicolour diazo printing. Suitable (I) include citric, tartaric, boric, sulphamic, salicylic, phosphoric, oxalic, succinic, malonic, butyric, phthalic, maleic, lactic, propionic, trimellite acids.</p> |
