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胺(
甲苯胺)、1,6-己二胺、2,4-甲苯二异氰酸酯为原料进行合成。
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胺(
甲苯胺)、1,6-己二胺、2,4-甲苯二异氰酸酯为原料进行合成。
Chemical modification including oxygenation, esterify, graft copolymerization and so on.
学
主要有氧
、交
、酯
和接枝共聚。
Modified larch tannin was prepared by grafting copolymerization and sulfoalkylation, and successfully used as retanning agent, possessing good water solubility and enhanced penetration rate.
利用接枝共聚和磺烷基的方法对落叶松单
。
Cast nylon modified with laurolactam was prepared by activated anionic copolymerization under the adiabatic condition.Its mechanical properties were studied.
在绝热条件下通过活阴离子共聚制备十二内酰胺
浇铸尼龙,对其力学
能进行了研究。
声明:以上例句、词分类均由互
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