二二二
- 与 二二二 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The Annual production composite Dimethyl Blatomic Acid is 6000 tons, DBE-IB is 2000 tons. Dimethyl adipate is 2000 tons and TEC is 3000 tons.
年产混酸二甲酯6000吨,环保型高效成膜助剂2000吨,己二酸二甲酯2000吨,邻苯二甲酸二甲酯3000吨。
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Water,c12-20 acid peg-8 ester,caprylic/capric triglyceride,proplylene glycol,ppg-15 stearyl ether,chondrus crispus,iris germanica(orris extract/cells),centaurea cyanus,macadamia ternifolia,buxus chinensis,triethanolamine,potassium cetyl phosphate,butyrospermum parkii,c12-13 alkyl lactate,carbomer,phenoxyethanol,methylparaben,imidazolidinyl urea,glyceryl hydroxystearin,tocopheryl acetate.retinyl palmitate,sodium hyaluronate,biosaccharide gum-1,propylparaben,disodium edta,ethylparaben,pentadecalactone,hydroxystearic acid,tetradecyloctadecanoic acid,tetradecyleicosanoic acid,hexadecyleicosanoic acid,butylparaben,isobutylparaben,chlorhexidine digluconate,tocopherol,lecithin,ascorbyl palmitate,glyceryl stearate,glyceryl oleate,BHT,citric acid.
水,C12-20 酸 PEG-8酯,辛酸/癸酸三酸甘油酯,丙二醇,PPG-15 硬脂基醚,卡拉胶萃取,德国鸢尾花提取物/细胞,矢车菊提取物,澳洲坚果油,荷荷巴油,三乙醇胺,十六烷基磷酸钾,牛油果,c12-13烷醇乳酸酯,卡波姆,苯氧乙醇,羟苯甲酯,尿素醛,甘油羟基硬脂酸酯,醋酸盐维他命E,维他命A酯,透明质酸钠,多醣物质,羟苯丙酯,乙酸乙二胺二钠,羟苯乙酯,环十五内酯,羟基硬脂酸,十四烷基十八烷酸,十四烷基二十烷酸,十六烷基二十烷酸,羟苯丁酯,对羟基苯甲酸异丁酯,洗必泰葡萄糖酸盐,维生素E,卵磷脂,抗坏血酸棕榈酸酯,甘油硬脂酸,甘油油酸酯,BHT,柠檬酸。水:几乎所有护肤品成分第一位都是水。辛酸/癸酸三酸甘油酯:润滑剂、扩散剂,棕榈油/椰子油衍生物
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hydantoin was synthesized from diethyl malonate comprising condensation with 1, 2-dichloroethane, ammonolysis to diamide, Hoffmann degradation to give 5-cyclopropanespirohydantoin, and ring-opening with 40% hydrobromic acid.
以丙二酸二乙酯为原料,先与1, 2-二氯乙烷缩合生成1, 1-环丙烷二羧酸二乙酯,再经氨解生成1, 1-环丙烷二甲酰胺,然后在次氯酸钙溶液中进行Hoffmann降解成环生成5-环丙螺海因,最后在40%氢溴酸中开环得到5-溴乙基海因。
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In the paper the deterrent content and the concentration of diphenylamine dibuty l phthalate and centralite Ⅱ in finished product manufactured by two different methods were analyzed by high performance liquid chromatography, which can provi dereference for adjusting the technology of the propellant manufacture.
文摘:利用高效液相色谱仪分别测定了发射药在两种制备工艺中的钝感剂邻苯二甲酸二丁酯和二号中定剂的含量及邻苯二甲酸二丁酸在其中的浓度梯度分布,为调整发射药制备工艺提供了参考。
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The process is carried out by taking organic acid and sulfoxide chloride as raw materials, acyl chloride synthesizing, reacting ethylenediamine with sodium chloroacetate to synthesize intermediate sodium EDDA, and reacting it with acyl chloride to synthesize the final product.
所述双子烷基羧酸盐表面活性剂是由以下方法制得的,以有机酸和氯化亚砜为原料首先进行酰氯的合成,再用乙二胺与氯乙酸钠反应合成中间体乙二胺二乙酸钠,将中间体乙二胺二乙酸钠与酰氯反应合成终产物。
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After esterification, the ethyl-2-chloro-3-phenylpropionate reacts with diethyl malonate under the catalysis of sodium ethylate, and we obtain the corresponding triethyl ester. The-benzylsuccinic acid is formed by the triethyl ester reacting with concentrate hydrochloric acid and taking place hydrolyzation and decarboxylation reaction at the same time. In order to avoid the formation of cinnamic acid, the sodium ethylate and diethyl malonate must be react sufficiently. The course has simple operation, inexpensive materials and better yield.
具体制备工艺为:首先以L-苯丙氨酸为原料采用重氮化方法得到-2-氯-3-苯基丙酸,再经酯化得到-2-氯-3-苯基丙酸乙酯后在乙醇钠催化作用下和丙二酸二乙酯缩合,发生SN2反应,得到相应的三乙酯,然后经水解和脱羧,得到-苄基丁二酸;在实验中乙醇钠要和丙二酸二乙酯充分反应,避免生成肉桂酸乙酯;该过程操作简单,原料便宜,产率较高,总收率可达到26.8%。
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Water,decyloleate,propylene glycol,stearic acid,glyceryl stearate,peg-100 stearate,iris germanica(orris extract/cells),chamomilla recutita,arctium majus,prunus dulcis,ceteareth-3, Triethanolamine,phenoxyethanol,methylparaben,imidazolidinyl urea,carbomer,c12-13 alkyl lactate,disodium edta,propylparaben,glyceryl hydroxystearate,cetyl esters,ethylparaben,pentadecalactone,cera microcristallina,trihydroxystearin,butylparaben,hydroxystearic acid,isobutylparaben,chlorhexidine digluconate,tetradecyloctadecanoic acid,tetradecyleicosanoic acid,tocopherol,lecithin,ascorbyl palmitate,glyceryl oleate,citric acid
水,油酸癸酯,丙二醇,硬脂酸,甘油硬脂酸,聚乙二醇硬脂酸酯,鸢尾花提取物/活细胞,洋甘菊萃取,牛蒡提取物,甜杏仁油,鲸蜡硬脂醇醚,三乙醇胺,苯氧乙醇,羟苯甲酯,尿素醛,卡波姆,c12-13烷醇乳酸酯,乙酸乙二胺二钠,羟苯丙酯,甘油羟基硬脂酸酯,十六烷基酯,羟苯乙酯,环十五内酯,微晶蜡,三羟基硬脂精,羟苯丁酯,羟基硬脂酸,对羟基苯甲酸异丁酯,洗必泰葡萄糖酸盐,十四烷基十八烷酸,十四烷基二十烷酸,维生素E ,卵磷脂,抗坏血酸棕榈酸酯,甘油硬脂酸,柠檬酸水:几乎所有护肤品成分第一位都是水。油酸癸酯:滋润、柔肤剂,并常添加于多种化妆品中作为溶剂
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And then methanesufonic acid which is colorless and oderless is obtained by the hydrolysis of methane sulfonyl chloride at 70~90℃.
以硫、硫化钠、硫酸二甲酯为起始原料制备了二甲基二硫,然后用氯气氧化二甲基二硫得甲烷磺酰氯,经水解合成了甲烷磺酸,产品无色无味。
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The invention relates to a preparation process for synthesizing polyethylene terephthalate 1, 3- terephthalate catalyst, which comprises adding titanic acid ester, germanium compounds and cobalt compound into liquid dispersed phase of organic solution, wherein the total weight concentration is 4-10%, and preparing the catalyst through mechanical stirring or ultrasonic wave mixed ligand for 10-60 minutes in 0-120 DEG C, wherein the adding content of titanic acid ester, germanium compounds and cobalt compound are respectively 200-500ppm, 50-300ppm and 100-400ppm of reaction monomer mass of terephthalic acid or dimethyl terephthalate.
本发明涉及一种合成聚对苯二甲酸1,3-丙二醇酯催化剂的制备方法,将钛酸酯、锗化合物和钴化合物加入到有机溶剂的液体分散相中,总重量浓度为4~10%,在0-120℃通过机械搅拌或超声波混配10-60min制得;钛酸酯、锗化合物和钴化合物加入量分别是对苯二甲酸或对苯二甲酸二甲酯反应单体质量的200-500ppm、50-300ppm、100-400ppm;用此催化剂制备PTT产品,酯化和缩聚反应时间相对于单独使用钛酸四丁酯缩短了30-60min,产品特性粘数0.70-1.05dL/g,色相b值在2-6之间,切片可用于加工新型合成纤维及工程塑料产品。
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In ethylene glycol solution, 1 was converted into 1-oxo-13c-(2-hydroxyethoxy)-1, 13c-dihydro-dibenzo -xanthene (23) and ketal compound 7a, 13bethylenedioxy-1-hydroxy-7a, 13b-dihydro-dibenzo -xanthene (24), the structure of which was confirmed by X-ray single crystal diffraction.
在乙二醇中反应时,1被氧化为二苯并咕吨型的23和缩酮型的7a,13b-亚乙二氧-1-羟基-7a,13b-二氢-二苯并-咕吨(24)。24的结构得到X-ray单晶衍射的证实。
- 推荐网络例句
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Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.
最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。
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Only person height weeds and the fierce looks stone idles were there.
只有半人深的荒草和龇牙咧嘴的神像。
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This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.
这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。