benzidine

1.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.

为成新型热聚脲，以含基元的联苯二胺（或联邻甲苯胺）、1，6-己二胺、2，4-甲苯二异氰酸为原料进行成。

2.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′-二氯联苯胺、乙酰乙酰苯胺为原料，经重氮化、偶成了C．I．颜料黄12。

3.4. 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′-二氯联苯胺、乙酰乙酰苯胺为原料，经重氮化、偶成了C．I．颜料黄12。收藏指正