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.
为合成新型热致液晶聚脲，以含液晶基元的
苯二
（
邻甲苯）、1，6-己二、2，4-甲苯二异氰酸
为原料进行合成。
苯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.
为合成新型热致液晶聚脲，以含液晶基元的苯二（邻甲苯）、1，6-己二、2，4-甲苯二异氰酸为原料进行合成。
Using 3,3′-dichloro benzidine and acetoacetanilide as raw materials, C.I. pigment yellow 12 was synthesized by diazotization and coupled reaction.
以3，3′-二氯苯、
苯为原料，经重氮化、偶合反应合成了C．I．颜料黄12。
4. Using 3,3′-dichloro benzidine and acetoacetanilide as raw materials, C. I. pigment yellow 12 was synthesized by diazotization and coupled reaction.
以3，3′-二氯苯、苯为原料，经重氮化、偶合反应合成了C．I．颜料黄12。收藏指正
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