Two series of thermotropic liquid crystalline polyureas were synthesized by the copolymerization of benzidine (or o-tolidine),1,6-hexane diamine and 2,4-toluene diisocyanate.
新型热致液晶聚脲,含液晶基元的联苯二胺(或联邻甲苯胺)、1,6-己二胺、2,4-甲苯二异氰酸原进行。
Two series of thermotropic liquid crystalline polyureas were synthesized by the copolymerization of benzidine (or o-tolidine),1,6-hexane diamine and 2,4-toluene diisocyanate.
新型热致液晶聚脲,含液晶基元的联苯二胺(或联邻甲苯胺)、1,6-己二胺、2,4-甲苯二异氰酸原进行。
Using 3,3′-dichloro benzidine and acetoacetanilide as raw materials, C.I. pigment yellow 12 was synthesized by diazotization and coupled reaction.
3,3′-二氯联苯胺、乙酰乙酰苯胺原,经重氮化、偶反应了C.I.颜12。
4. Using 3,3′-dichloro benzidine and acetoacetanilide as raw materials, C. I. pigment yellow 12 was synthesized by diazotization and coupled reaction.
3,3′-二氯联苯胺、乙酰乙酰苯胺原,经重氮化、偶反应了C.I.颜12。收藏指正
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