丁酸

Bis-acetylthiosuccinic acid-S_2~(35) was obtained by the addition of compound Ⅳ to acetylenedicarboxylic acid.

本工作简化2，3-二巯基丁二酸的合成步骤，以半微量法制各其硫~(35)标记的化合物。

Poly is synthesized by the directly reaction of maleic anhydride and ammonia in water.

以顺丁烯二酸酐和浓氨水为原料采用直接液相聚合的方法合成了聚天冬氨酸。

In a container combine 1 oz Grey Goose La Orange, 1/2 oz Cointreau, 1 oz Cranberry juice, 3 dashes of Angostura Orange Bitters and 1 gramme of Aliginate. Then, place the preparation into a drop by drop container.

在一个容器中混合1盎司灰雁柳丁，1/2盎司君度甜酒，1盎司红莓汁，3毫升安戈橙苦酒和1克藻酸纤维。

Sucrose, Glucose Syrup, Pectin, Colors (berry juice, black carrot, annatto), Natural Flavors, Lactic Acid, Citric Acid and Fumaric Acid.

蔗糖， 葡萄糖，果胶(存在于如苹果、杏和葡萄等成熟的水果中)，颜色(来自浆果汁，胡萝卜，胭脂树橙)，天然口味，乳酸，柠檬酸，反丁烯二酸。

The effects of synthesis temperature on the lattice parameter,the crystallite size and the content of CO2-3 of the prepared samples,the effects of the concentration of reactants on the particle size and morphology,and the effects of the molar ratio of barium hydroxide to tetrabutyl titanate on the molar ratio of bar...

研究了合成温度对样品的晶胞参数、晶粒大小和CO32-含量的影响；反应物浓度对样品的颗粒大小和形貌的影响；氢氧化钡与钛酸四丁酯的摩尔比对样品中钡钛摩尔比的影响。

ABSTRACT: In the presence of sodium t-butoxide and DMSO,ethyl 2-oxocyclopentanecarboxylate was subjected to C-alkylation with 2-(4-bromomethylphenyl)propanoic acid with high regioselectivity to give 2-［4-(1-ethoxycarbonyl-2-oxo-1-cyclopentanylmethyl)phenyl］propanoic acid (4) which was followed by hydrolysis,decarboxylation and salt formation to afford loxoprofen sodium in about 72% overall yield.

在叔丁醇钠和二甲基亚砜的存在下，2-丙酸对2-乙氧羰基环戊酮进行C-烷基化，再经水解脱羧，成盐即得洛索洛芬钠，以2-丙酸计算，总收率为72%。

Polyurethane-acrylics hybrid latexes were prepared using isophorone diisocyanate, dimethylol propanoic acid and polypropylene oxides of different molecular weights as main materials for PU component, and butyl acrylate, methyl methacrylate and a crosslinker, trihydroxymethyl propanetriacrylate as main acrylic monomers. Hydroxyethyl acrylate was used as the coupling agent between PU and AC.

以异佛尔酮二异氰酸酯、二羟甲基丙酸和聚丙醚二醇等为聚氨酯原料，丙烯酸丁酯、甲基丙烯酸甲酯、三羟甲基丙烷三丙烯酸酯为丙烯酸酯类单体，丙烯酸羟乙酯为聚氨酯和聚丙烯酸酯间的偶联剂合成了丙烯酸酯改性水性聚氨酯乳液。

The experimental results show that the composite emulsion of nitrocellulose -alkyd resin acrylate, which is prepared by modifying the nitrocellulose with non -drying or alkyd resin, methyl methacrylate and butyl acrylate monomer under the optimized experimental conditions have good stability and excellent performance.

实验结果表明，以不干性油醇酸树脂、甲基丙烯酸甲酯和丙烯酸丁酯单体为主要原料，在优化的实验条件下对硝基纤维素进行改性，可制得稳定性好的硝化纤维素-醇酸树脂-丙烯酸酯复合乳液。

The reaction was investigated in the synthesis of maleate using maleic anhydride and methanol as raw materials and solid acid as catalyst, and it was found that sodium bisulfate catalyzed the reaction more efficiently than that of molecular sieve.

考察了固体酸对顺丁烯二酸酐和甲醇合成马来酸酯的催化作用，结果表明，硫酸氢钠比分子筛的催化效果好。

The liquefied Japanese cedar was blended with PMDI (poly-4, 4'-diphenylmethane diisocyanate), and adding water as a blowing agent, organosiloxane as a surfactant and dibutyl tin dilaurate as a catalyst to prepare the polyurethane foams. The effects of the kind and dosage of surfactant and the molar ratio of NCO/ for PMDI to liquefied Japanese cedar on the properties of PU foams were investigated.

Don； Japanese cedar进行液化处理，所得液化柳杉进一步与异氰酸酯PMDI混合，并添加水为发泡剂，有机矽氧烷为界面活性剂，二月桂酸二丁锡为催化剂制造聚胺基甲酸酯发泡体，探讨界面活性剂种类、添加量及PMDI与液化柳杉之NCO/莫耳比对所制造PU发泡体性质之影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。