溴酸

The company has two production¨×biopsy device, the three modified PTT and PTT fibers,¨×fiber production line, a set of three monomers (isophthalic acid, 5 - sodium) production unit, a four-monomer production line with annual production of 15,000 tons slice¨×composite and PTT fibers, staple¨×compound, PTT modified fiber 15,000 tons and 1,000 tons of the four monomers, three monomers 1200 tons, brominated flame retardants EPS with the capacity of 3000 tons .

公司拥有两套波斯伦切片生产装置，三条PTT及改性PTT纤维、波斯伦纤维生产线，一套三单体（间苯二甲酸，5-磺酸钠）生产装置，一套四单体生产线，具有年生产波斯伦复合切片15000吨和PTT纤维、波斯伦复合短纤、PTT改性纤维15000吨及四单体1000吨，三单体1200吨、溴系EPS用阻燃剂3000吨的能力。

Fourteen new pyrethroids containing isoxazole were designed and synthesized from 4-isopropyl-3-substituted phenyl-5-hydroxyl isoxazoles as major material, whose structures were also characterized by IR, 1H NMR and elemental analysis.

以4-异丙基-3-取代苯基-5-羟基异噁唑和3-苯氧基苄基溴为原料，三乙胺为缚酸剂，设计并合成了14个未见报道的4-异丙基-3-取代苯基-5-异噁唑基-(3'-苯氧基)苄基醚。通过红外光谱、核磁共振、元素分析等手段，确证了它们的化学结构。

The results show that the optimal parameters of esterification are as follows: 4% of SO42-/ZrO2, molar ratio of methanol to litsea cubeba kernel oil 101, 68 ℃ of reaction temperature and 4 h of reaction time, the acid value decreases to 2.52 mg/g. Compared with the traditional acidic-catalyzed method, this method has the advantages of no acid proof equipment, easy to recycle catalyst and no acidic waste water emission. The optimal parameters of transesterification are as follows: 25 ℃ of reaction temperature, 0.5% of hexadecyl-trimethyl-ammonium bromide, 1% of NaOH, molar ratio of methanol to the oil 61 and 15 min of reaction time. The ester exchanging rate is 97.6%. This method adopts phase transfer catalyst and produces industry prospect, which has many advantages such as energy-saving and time-saving under room temperature.

研究结果表明，固体酸SO42-/ZrO2催化酯化反应的最佳条件为：油重4%的SO42-/ZrO2，醇油摩尔比为101，温度为68 ℃，反应时间为4 h，原油酸值降到2.52 mg/g；该法相对浓硫酸催化酯化法具有不需耐酸设备、催化剂易回收、无废水排放等优点；相转移催化酯交换反应的最佳条件为：温度为 25 ℃，0.5%的十六烷基三甲基溴化铵，油重1%的NaOH，醇油摩尔比为61，反应15 min，原油酯交换率达到97.6%；采用相转移催化技术，反应在常温下进行，大大减少了能耗，缩短了反应时间，具有的产业化前景。

This investigation was prepared MCM-41 catalyst films on silicon wafer in ammonia media, using tetraethyl orthosilicate as a precursor and cetyltrimethylammonium bromide as a surfactant.

中文摘要本研究以四乙基氧矽溶液为矽酸盐的来源，溴化十六烷基三甲基铵盐为界面活性剂，在氨水的环境下，制备MCM-41触媒薄膜於矽晶片上。

The synthetic route starts from penicillin G, peroxyacetic acid(8.5%) as Oxidizing Agent to get penicillin G sulfoxide; esterifided with p-nitrobenzyl bromine to synthesize penicillin G sulfoxide ester; we synthesize 3-exomethylenecepham sulfoxide ester with phthalimide potassium and 4A molecular sieve as acid scavenger to open the ring, SnCl_4 as catalyzation to close the ring. The yield is over 60%.

本研究采用的合成路线为：以青霉素G钾盐为原料，选用工业过氧化氢制备的过氧乙酸(22.3%)稀释至8.5%为氧化剂，氧化得青霉素亚砜；采用对硝基溴苄为酯化试剂，制备青霉素亚砜酯；以NCP(N-氯代邻苯二甲酰亚胺)为开环试剂，酞酰亚胺钾和4A型分子筛为酸清除剂，顺利开环；再经无水SnCl_4催化闭环得3-环外亚甲基头孢亚砜酯，最终产率在60%以上。

Improved synthesis of 2-(4-bromomethylphenyl)propionic acid,the key intermediate for loxoprofen sodium,was investigated.

对洛索洛芬钠的关键中间体2-(4-溴甲基苯基)丙酸的合成工艺进行了改进研究。

Aim To investigate a new synthetic method of 2-(4-bromomethylpheny1)propionic acid,the key intermediate of loxoprofen sodium.

摘要目的研究消炎镇痛药洛索洛芬钠的关键中间体2-4-溴甲基）苯基丙酸的合成新方法。

Results and conclusion The structure of 2-(4-bromomethylphenyl) propionic acid was identified by 1H-NMR, FT-IR and MS analysis. The target compound was prepared in an overall yield of 38%.

结果与结论关键中间体2-（4-溴甲基）苯基丙酸的结构经1H-NMR、FT-IR、MS谱确证，目标化合物的总收率为38%。

Results and conclusion The structure of 2-(4-bromomethylpheny1)propionic acid was identified by1H-NMR, FT-IR and MS analysis. The target compound was prepared in an overall yield of 38%.

结果与结论关键中间体2-4-溴甲基）苯基丙酸的结构经1H-NMR、FT-IR、MS谱确证，目标化合物的总收率为38%。

A HPLC method for determination of phenylephrine hydrochloride, paracetamol, caffeine anhydrous ,salicylamide and brompheniramine maleate in Liufenkamin tablets was established.

建立了HPLC法测定柳酚咖敏片中盐酸去氧肾上腺素、对乙酰氨基酚、无水咖啡因、水杨酰胺、马来酸溴苯那敏的含量。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。