甲基氰

Waterborne aliphatic polyurethane dispersion was synthesized by the reaction of epoxy resin with isophorone diisocyanate, dimethoxypropionic acid and polyester-diol.

以异佛尔酮二异氰酸酯、聚酯二元醇和二羟甲基丙酸作为主要原料合成了脂肪族水性聚氨酯分散体，并用环氧树脂对其进行了改性。

The formation, texture and some properties of cyanoethyl cellulose/dimethyl aceta-mide mesomorphic solutions were studied.

本文利用Abbe折射仪，热台偏光显微镜，小角光散射等方法研究了氰乙基纤维素/二甲基乙酰胺液晶溶液的形成，形态结构和某些性质。

The results show that the curing agent, with 6% amount of epoxy weight, is a mesothermal latent curing agent, and curing temperature is about 120℃(1h).

采用双氰胺和2-乙基-4-甲基咪唑组成的体系作为固化剂体系，利用DSC分析了固化剂体系的最佳固化工艺。

According to the mass ratio of 5 to 1 between dicyandiamide and 2-ethyl-4-methyl imidazole, the curing system belongs to a mesothermal latent curing agent. The results show that curing products have good heat resisting property.

2所选用的固化剂体系由双氰胺和2-乙基-4-甲基咪唑组成，两者按5：1质量配比组成的体系属于中温潜伏型固化剂，环氧固化物具有良好的耐热性。

If 3 hydroxide are methylic,is agent of cross-linking of research cellulose fiber recently 3 get together cyanogen amine or 1, 2, 3, 4, butane 4 formic acid and hydroxyl are luscious the combination of organic phosphor oligomer should...

最近有探究纤维素纤维交联剂如三羟甲基三聚氰胺或1，2，3，4—丁烷四甲酸和羟基官能有机磷低聚物的联合应。。。

The method is characterized in that:(1) the reflux of the 2-[N, N- 2amino]-3-cyano-group-4-thiopheneacetic-5-carboxylic acid tetra ester is carried out in the proper sodium hydroxide aqueous solution of alcohol for 5h to 6h and the pH value is kept over 10 during hydrolysis;(2) the ethanol of 20 per cent to 60 per cent is added and then the strontium chloride aqueous solution with 2times to 2.5times molal weight is directly added, precipitates the crystal, is filtered and dried;(3) water is added to carry out the reflux and the little salt packed in the crude product is removed, and the product is collected through heat filtration.

其特征在于：①将2--3-氰基-4-羧甲基噻吩-5-羧酸四酯在适量氢氧化钠水醇溶液中回流5～6小时，水解过程保持pH值10以上；②然后再加入20-60％乙醇，随后直接加入2-2.5倍摩尔量氯化锶水溶液，析出结晶，过滤，晾干；③加水回流，除去粗品中包裹少量盐，热过滤，收集产品。

The reaction of inulin with octadecyl isocyanates resulted in carbamoylated inulins from which the interfacial properties were determined.

菊糖与十八烷基异氰酸酯在有机溶剂中发生甲氨酰化反应，生成的氨甲基菊糖具有表面活性。

Mehods Commercially available glycine ethyl ester hydrochloride was used as starting material to give the target compound via addition, protection with BOC, Dieckmann cyclation, reduction with NaBH4 and LiAlH4, protection, oxidation, oximation and deprotection.

以甘氨酸乙酯盐酸盐为原料，依次经加成、BOC保护氨基、Dieckmann环化、NaBH4还原羰基、LiAlH4还原氰基、BOC保护氨甲基、氧化、肟化、脱BOC保护等9步反应制得目标化合物。

Acrylic resin containing N,N-dimethyl amino group and vinyl group applicable for UV-curable and cathodic electrophoretic paint was synthesized via radical polymerization of acrylic monomers followed by modification with methacrylic oxyethyl isocyanate.

通过自由基共聚合得到丙烯酸树脂，然后用甲基丙烯酸异氰酸乙酯对其改性，合成了既带有N，N-二甲胺基，又带有乙烯基的紫外光固化阴极电泳漆基体树脂。

Mainly engaged in sodium azide, barium azide, three phosphorus nitride Friday, phenyl isothiocyanate, 1 - phenyl -5 - mercapto-tetrazole, 4 - dimethylamino-pyridine, 2 - mercapto--5 -- methyl-1,3,4 thiadiazole, N-hydroxy phthalimide, anhydrous betaine and betaine hydrochloride, such as fine chemical raw materials and medicine, pesticide intermediates of the development, production and sales.

主要从事叠氮化钠，叠氮化钡，五氮化三磷，异硫氰酸苯酯，1-苯基-5-巯基四氮唑，4-二甲氨基吡啶，2-巯基-5-甲基-1，3，4噻二唑，N-羟基邻苯二甲酰亚胺，无水甜菜碱及甜菜碱盐酸盐等精细化工原料及医药、农药中间体的开发、生产和销售。

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。