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Dendrimers with stearyl groups on the periphery are synthesized by amidation using dendrihmers with NH2 on the periphery and stearyl chloride as raw materials.

以乙二胺和丙烯酸甲酯为原料，甲醇为溶剂，通过Michael加成及酰胺化反应，合成端基为胺基的树枝状大分子。

Two new active esters of acrylic acids monomers, N-p-acryloxybenzoyloxy succini-mide and N-p-methacryloxybenzoyloxy succinimide have been synthesized and polymerized.ABOSu and MBOSu were prepared by coupling of p-acryloxybenzoic acid or p-methacryloxybenzoie acid with N-hydroxy succinimide in the presence of dicyclohexylcarbodimide.

新的丙烯酸活性酯，N-(对甲基丙烯酰氧苯甲酰氧基)丁二酰亚胺及N-丁二酰亚胺单体分别由对甲基丙烯酰氧基苯甲酸、对丙烯酰氧基苯甲酸与N-羟基丁二酰亚胺在环已基羰二亚胺存在下经偶联反应合成。

Author tetradecyl acrylate used as a hydrophobic monomer, the direct use of precipitation polymerization Preparation of hydrophobically associating polymer P copolymers, so that the product of copolymerization and post-processing is more simple and easy process.

作者采用丙烯酸十四酯作为疏水单体，直接用沉淀聚合法制备疏水缔合型聚合物P共聚物，从而使共聚反应及其产物的后处理过程较为简单易行。

This article discusses the synthesis way and the advantages of thixotropic cyanoacrylate adhesive.

阐述了触变性氰基丙烯酸酯胶粘剂的合成方法及其优越性。

Acrylic resin as coated material, N- thiophosphric triamide and dicyandiamde as biological inhibitors, with Fluid Bed spraying biological inhibitors on urea granular surface and coated it with acrylic resin afterward, four coated urea fertilizers were made for monitoring slow/controlled effects of coated fertilizers in distilled water.

采用丙烯酸树脂为包膜材料，以NBPT和DCD为生化抑制剂，利用流化床对尿素进行涂层生化抑制剂及包膜，制备4种包膜肥料，对这些包膜肥料在水中的控释效果进行了研究。

Acrylic resin as coated material, N- thiophosphric triamide and dmyandlamde as biological inhibitors, with Fluid Bed spraying biological inhibitors on urea granular surface and coated it with acrylic resin afterward, four coated urea fertilizers were made for monitoring slow/controlled effects of coated fertilizers in distilled water.

采用丙烯酸树脂为包膜材料，以NBPT和DCD为生化抑制剂，利用流化床对尿素进行涂层生化抑制剂及包膜，制备4种包膜肥料，对这些包膜肥料在水中的控释效果进行了研究。

The dispersion and stability of BaTiO〓 suspensions with tribasic ammonium citrate and ammonium salt of poly as dispersants were investigated respectively by means of sediment experiment and rheology measure, and the optimal dispersion conditions were obtained.

通过沉降实验和流变性测量，研究了分散剂柠檬酸三铵、聚甲基丙烯酸铵分别对BaTiO〓悬浮体的分散和稳定作用，确定了分散剂最佳使用条件。

Using tetrabutyl titanate and methyl methacrylateor 2-Hydroxyethylmethacrylate (HEMA as materials, methacryloxylpropyl trimethoxy siliane a...

实验结果表明，当n：n(H2O)≥5、HCl浓度在0.3mol/L左右、n：n≥1、预水解时间为12h以及反应时间为6h时，可制得理想的聚丙烯酸酯类-TiO2纳米复合材料。采用红外光谱。。。

Ambient temperature self-crosslinking acrylic latexes were prepared through semicontinuous emulsion polymerization using 3 different polymerizable alkoxysilanes, i.e. vinyl tri silane (A172), Vinyl triethoxy silane and γ-methacryloxypropyl trimethoxy silane (A174). The hydrolysis of these siloxanes under different pH was characterized, and dependence of the latex and polymer properties on these siloxanes and their incorporated amounts in the polymers was studied.

使用三种含不饱和双键硅氧烷，乙烯基三硅烷(A172)、乙烯基三乙氧基硅烷和γ-甲基丙烯酰氧丙基三甲氧基硅烷(A174)为功能单体，采用半连续乳液聚合法制备了室温自交联丙烯酸酯乳液，探讨了硅氧烷功能单体在不同pH条件下水解情况以及其种类和用量对乳液及乳胶膜性能的影响。

Using tetrabutyl titanate and methyl methacrylateor 2-Hydroxyethylmethacrylate (HEMA as materials, methacryloxylpropyl trimethoxy siliane as coupling agent, HCl as catalyst, Poly-titania（PMMA－TiO2） nanocomposites and Poly-titania（PMMA－TiO2） nanocomposites were synthesized by sol-gel process.

以盐酸作为催化剂，将钛酸四丁酯水解制备二氧化钛（TiO2）溶胶；随后将所制备溶胶与甲基丙烯酸甲酯、硅烷偶联剂（γ－甲基丙烯酰氧丙基三甲氧基硅烷）相混合，以过氧化苯甲酰作为引发剂，经过聚合、缩合和溶胶-凝胶过程，制备了均匀透明的PMMA-TiO2纳米复合材料和PHEMA－TiO2纳米复合材料。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。