二甲基甲烷
- 与 二甲基甲烷 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Methanol can be further processed to hundreds of organic products, such as formaldehyde, MTBE, acetic acid, sodium methoxide, chloromethane , methyl formate, formamide, 2-methyl formamide etc., the demand for those will be expand in future:① in 2000, the production of formaldehyde is 2,068,000 tons, along with our country continue reinforce the infrastructure, the consumption of formaldehyde will increase rapidly.
甲醇可深加工的有机化工产品有上百种,如甲醛、 MTBE、醋酸、甲醇钠、氯甲烷、甲酸甲酯、甲酰胺、二甲基甲酰胺等等,预计这方面的需求今后会有适度发展:① 2000年我国甲醛产量达206.8万吨,近年随着我国基本建设的不断加强,甲醛消费量增长迅速。
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These methanols were treated with BF3 in CH2Cl2 to generate the diferrocenylmethyl carbocations. Without separation from the reaction mixture, the ions were treated with some amines RNH2 [R=C2H5, n-C3H7, n-C4H9, HOCH2CH2, HOCH(CH3)CH2, HOCH2CH(C2H5)] to afford the ferrocenylamines in high yields. The present methodology for preparing α-ferrocenylamines from α-ferrocenyl alcohols enjoys such advantages as simple procedure and inexpensive starting materials.
它们对酸的敏感性很高,与BF3在二氯甲烷中作用可形成稳定的二茂铁基甲基碳正离子,无需从溶液中分离出来,便可与胺RNH2[R=C2H5,n-C3H7,n-C4H9,HOCH2CH2,HOCH(CH3)CH2,HOCH2CH(C2H5)]作用得到产率颇高的二茂铁基胺,这种由α-二茂铁基醇制备α-二茂铁基胺的方法具有简单、快速和原料廉价的特点。
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Effect of several reaction factors on the yield of the synthesis of methane sulfonyl chloride is discussed.
阐述了利用二甲基二硫在相转移催化剂作用下,于盐酸介质中经氯气直接氧化,一步合成甲烷磺酰氯的工艺过程,讨论了几个主要反应因素对产物收率的影响,确定了适宜的工艺条件。
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Four non-ionic europium complexes,〓-phen(11),〓·bipy(12),〓·dia(13) and 〓(14)(TTA=2-thenoyltrifluoroacetone, DBM=dibenzoylmethane, phen=phenanthroline, bipy=2,2'-bipyridine, dia=4,5- diazafluoren-9-one, dmbp=4,4'-dimethyl-2,2,-bipyridine), were synthesised and the triboluminescent phenomena of 12, 13 and 14 were firstly observed. Structure determinations of 11,12 and 14 were carried out. The triboluminescence maxima of 12 and 13 are similar to those of their photoluminescence. X-Ray structure analyses show that Eu atoms all exhibit eight-coordinate tetragonal antiprismatic geometries and complexes 11, 12 and 14 are all centrosymmetric.
二、合成了四个非离子型的铕的配合物:〓、〓、和〓(14)[HTTA=2-噻吩三氟甲酰丙酮,DBM=二苯甲酰基甲烷,phen=邻菲罗啉, bipy=2,2'-联吡啶,dia=4,5-二氮杂芴-9-酮,dmbp=4,4'-二甲基-2,2'-联吡啶],首次报道了12、13及14的摩擦发光性质,测定了11、12及14的晶体结构,并系统地讨论了晶体结构和摩擦发光活性之间的关系。12及13的摩擦发光光谱的极大值均类似与其相应的光致发光光谱,表明它们有相同的激发态。
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Poly with sulfonic acid groups were readily synthesized with biphenol and 1,3-bis(4-fluorobenzoyl)benzene in the presence of excess potassium carbonate followed by sulfonation with chlorosulfonic acid.
以二氯二苯甲烷和2,6-二甲基苯酚为原料合成了含有阻碍基团的双酚单体,用此双酚单体和1,3-二(4-氟苯甲酰基苯)在无水碳酸钾存在的条件下反应制得聚芳醚酮,然后用氯磺酸磺化,控制反应条件,使磺酸基团恰好进入苯环对位,制得新型结构的磺化聚芳醚酮。
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Water,caprylic/capric triglyceride,mineral oil,butylene glycol,stearic acid,acetylated lanolin,glycerin,ethylhexyl methoxycinnamate,dimethicone,polyisoprene,triethanolamine,cyclopentasiloxane,butyl methoxydibenzoylmethane,titanium dioxide,persea gratissima oil unsaponifiables,sodium DNA,borago officinalis seed oil,oenothera biennis oil,simmondsia chinensisseed oil,hydrolyzed RNA,tocopheryl acetate,urea,hydrolyzed extensin,retinyl palmitate,sodium hyaluronate,helianthus annuusseed oil,tocopherol,ascorbyl palmitate,ascorbic acid,lanolin alcohol,c12-20 acid peg-8 ester,cyclotetrasiloxane,glyceryl stearate,dimethiconol,ceteareth-20,carbomer,magnesium aluminum silicate,propylene glycol,peg-8,silica,BHT,citric acid,phenoxyethanol,methylparaben,butylparaben,ethylparaben,isobutylparaben,propylparaben,chlorhexidine digluconate
水,辛酸/癸酸三酸甘油酯,矿物油,丁二醇,硬脂酸,乙醯化羊毛脂,甘油,4-甲氧基肉桂酸-2-乙基己基酯,地美司康,聚异戊烯,三乙醇胺,环戊硅氧烷,丁基甲氧基二苯甲醯基甲烷,二氧化钛,酪梨油,DNA 钠盐,琉璃苣種子植物油,月见草油,荷荷巴籽油,水解RNA,醋酸盐维他命E,尿素,水解伸展蛋白,维他命A酯,透明质酸钠,葵花籽油,维生素E,抗坏血酸棕榈酸酯,维生素C衍生物,羊毛脂醇,C12-20 酸 PEG-8酯,环四硅氧烷,甘油硬脂酸,聚二甲基硅氧烷醇,鲸蜡硬脂醇醚-20,卡波姆,硅酸镁铝,丙二醇,聚乙二醇-8,二氧化硅,二丁基羟基甲苯,柠檬酸,苯氧乙醇,羟苯甲酯,羟苯丁酯,羟苯乙酯,羟苯甲酸异丁酯,羟苯丙酯,洗必泰葡萄糖酸盐
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The copolycondensation type polyamic acid was synthesized by using 3,3', 4,4'-Benzophenonetetracarboxylic dianhydride as the dianhydride monomer, 4,4'-Diamino diphenylmethane and 4,4'-Oxydianiline as the diamine monomer under microwave irradiation in Dimethylformamide.
在微波辐射条件下,采用3,3',4,4'-二苯酮四羧酸二酐、4,4'-二氨基二苯甲烷和4,4'-二氨基二苯醚为单体,N,N'-二甲基甲酰胺为溶剂,低温合成一种共缩聚聚酰亚胺的前驱体聚酰胺酸,化学亚胺化脱水环化生成BTDA型共缩聚聚酰亚胺。
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The polyetherurethane was synthesized by one-step method for cosmetic applications by coupling poly(PTMG,Mn=2000) and poly(PEO,Mn=2000) with 4,4'-diphenylmethane diisocyanate.
聚醚型聚氨酯用于化妆品中,由聚四亚甲基醚二醇和聚环氧乙烷与4,4-二苯甲烷二异氰酸酯采用一步法合成,结果表明PEU暴露在60℃酒精/水(80/20,体积比)溶液中放置4周后发生降解,PEU发生变质,其相对分子质量、粘度和机械性能都发生改变。
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The experimental results indicated that the yield of 2,6-DMN can reach above 38%, when the usage of dimethylnaphthalene was 2g, the temperature reached 18℃, the reaction time was 2.5h, the mole ratio of water-free aluminum trioxide to dimethylnaphthalene was 0.8, the mole ratio of transmethylation agent tetramethylbenzene to dimethylnaphthalene was 1.0, the usage of methane trichloride was 15mL.
结果表明,2-甲基萘(2-MN)使用量为2g时,反应温度为18℃、时间为2.5h、n:n(2-甲基萘)=0.8、n:n(2-甲基萘)=1.0、二氯甲烷用量为15mL时,2,6-DMN的收率可达38%。
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The structures were identified by IR, UV,〓 NMR and element analyses. 2. Free radical 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxyl as catalyst, the phase transfer catalyzed method of oxidation eighteen semicarbazides to N-Aryl-2-Phenyl diazenecarboxamide with a solution of potassium ferricyanide in 2N aqueous sodium hydroxide and dichloromethane is described for the first time.
利用2,2,6,6-四甲基-4-羟基-1-哌啶氮氧自由基为相转移催化剂,在饱和铁氰化钾的2N氢氧化钠溶液与二氯甲烷的两相反应液中,催化氧化十八个取代氨基脲得到十八个相应的新型偶氮化合物N,2-二芳基二氮亚烯甲酰胺,均获得了较高的产率。
- 推荐网络例句
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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.
然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。
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Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.
镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。