甲基氰

A series of 5-bromopyrimidinyl-containing new sulfonylureas have been synthesized through bromination of 2-amino-4-methyl pyrimidine, followed by further modification and then coupled with sulfonyl isocyanate.

通过2-氨基-4-甲基嘧啶溴代反应以及进一步的衍生、磺酰基异氰酸酯的胺解，合成了一系列含有5-溴嘧啶基的新磺酰脲。

The solubility of cyanuric acid in dimethyl sulfoxide is determined by synthetic method designed and installed with computer monitor on line.

用计算机在线检测的激光监视动态法测定三聚氰酸在二甲基亚砜中的溶解度，并分别用Apel blat溶解度方程和简化的溶解度方程对实验数据进行了关联。

Polyurethane emulsion leather paint agent is prepared from α,α-dimethylolpropionie acid, polytetramethylene glycol and tolyl diisocyanate.

聚氨酯乳液皮革涂饰剂是由α，α-双羟甲基丙酸、聚丁二醇与甲苯二异氰酸酯加成制得的。

Polyurethane emulsion petroleum emulsion breaking agents are prepared from tolyl diisocyanate,α,α-dimethylolpropionic acid and polypropylene glycol or glycerine ...

聚氨酯乳液石油破乳剂是由α，α-双羟甲基丙酸、甲苯二异氰酸酯分别与聚丙二醇、单甘酯、聚氧乙烯聚氧丙烯聚合物通过加成反应制得的。

And the acid-induced cross-linking reaction of phenol-aldehyde resin/hexamethaoxy methyl triazine has also been tested successfully.

对所研究生酸体系引发酚醛树脂/六甲氧基甲基三聚氰胺交联反应的能力进行了初步研究。

Polyurethane hybrid emulsion modified by caster oil and arylate was synthesized with toluene diisocyanate, polycaprolactone glycol (PCL22ON), castor oil, and methyl methacrylate.

以聚醚多元醇(N22O)、甲苯二异氰酸酯(TDI-80)、蓖麻油(C.0)、甲基丙烯酸甲酯为主要原料，合成了蓖麻油改性的水性聚氨酯复合乳液。

Knoevenagel condensation reaction between aromatic aldehyde, malononitrile or ethyl cyanoacetate is promoted by organocatalyst N-methylimidazole.

以1-甲基咪唑为有机小分子催化剂催化芳香醛与丙二腈或氰乙酸乙酯的Knoevenagel缩合反应，反应速度快，操作方便，产率高，后处理简单。

With toluene two isocyanogen diethylene glycol dinitrate, the polyester or the polyether dihydroxy alcohol, two methylol propionic acid, the triethylamine, the ethylene diamine and so on are raw materials, uses the prepolymer dispersion method, has prepared a series of anion river character polyurethane emulsion.

用甲苯二异氰酸酯、聚酯或聚醚二元醇、二羟甲基丙酸、三乙胺、乙二胺等为原料，采用预聚物分散法，制备了一系列的阴离子水性聚氨酯乳液。

The anion UV cured water soluble prepolymer was synthesized with toluene diisocyanate, dihydroxy compound, dihydroxyalkyl carboxylic acid, and polyurethane acrylate. The structure of the prepolymer was characterized by infrared spectroscopy.

采用甲苯二异氰酸酯、聚酯二元醇、二羟甲基丙酸和丙烯酸羟乙酯合成水性阴离子型聚氨酯丙烯酸酯，用傅立叶红外光谱证实了该聚合物的结构。

The castor oil based polyurethane potting materials were synthesized from castor oil,4,4 diphenylmethane diisocyanate,trimethylolpropane and 1,2 propanediol.

以蓖麻油，4，4' -二苯基甲烷二异氰酸酯、三羟甲基丙烷与 1，2 -丙二醇为原料合成了蓖麻油基聚氨酯灌封胶，研究了灌封胶的固化流变行为和凝胶化时间。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。