- 更多网络例句与丁酮二酸的相关的网络例句 [注：此内容来源于网络，仅供参考]
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Catalytic activity of phosphotungstic acid on synthesizing butanone 1,2-propanediol ketal was discussed,the factors influencing the synthesis were discussed and the best conditions were found out.
探讨了磷钨酸对丁酮1，2 丙二醇缩酮合成反应的催化活性，研究了酮醇摩尔比、催化剂用量、反应时间等因素对产品收率的影响。
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Methods The propylbridged biferrocenyl substituted pyridazinone was synthesized by the reaction of propylbridged biferrocene with ethyl succinyl chloride, and then condensed with hydrazine hydrate.
双二茂铁丙烷先与丁二酸单乙酯酰氯发生酰化反应，生成的1，4酮酸酯再与水合肼缩合得到含有双二茂铁丙烷的哒嗪酮衍生物。
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Metabolic pathway analysis for this strain showed that pentose and hexose could be transferred to succinic acid and other byproducts including acetic acid and α-ketoglutaric acid.
对菌株的代谢途径分析表明细胞具有五、六碳糖代谢酶系，以及在大量合成丁二酸的同时也产生少量乙酸、α-酮戊二酸等副产物。
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The results showed that there were 8 kinds of aliphatic, 5 kinds of esters, 2 kinds of aldehydes, 2 kinds of nitrogen sulfur heterocyclic rings and one kind of hydrocarbon, alcoholics, ketone, lactones respectively in the analyzed 21 kinds of aroma components, and the content of furfural,β-methyl valeric acid, palmitic acid, nicotine, neohytadiene were higher, next were acetyl ethyl propionate, caleric acid, phenyl ethyl acetate, hydroxylic diethyl succinate.
结果表明，在分析出的21种香气成分中，分别有脂肪酸类8种，酯类5种，醛类2种，氮硫杂环类2种，烃类、醇类、酮类、内酯类各l种，其中相对含量较高的物质成分是糠醛、β-甲基戊酸、十六碳酸、烟碱、新植二烯，其次是乙酰丙酸乙酯、异戊酸、苯乙酸乙酯、羟基丁二酸二乙酯等。
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Firstly, 3-ethylthiobutanal was prepared from crotonaldehyde reacting with ethanehiol in triethylamine with high yield. Secondly, methyl acetoacetate was converted to 6-ethylthiohept-3-en-2-one by three steps via hydrolysis, condensation with 3-ethyltio-butanal and dehydration, then 6-ethylthiohept-3-en-2-one was cycloco ndensed with dimethyl malonate by Michael addition and Claisen condensation, followed by saponification and decarboxylation to give the intermediate of 5-(2-ethylthiopropyl)-cyclohexane-1,3-dione.
首先，以巴豆醛与乙硫醇为原料，在三乙胺的催化作用下高收率制得3-乙硫基丁醛；然后从乙酰乙酸甲酯出发，通过碱水解、与3-乙硫基丁醛缩合、脱水三步反应合成6-乙硫基-3-烯-2-庚酮，接着6-乙硫基-3-烯-2-庚酮与丙二酸二甲酯通过Michael加成和Claisen缩合成环，再通过皂化和脱羧反应生成中间体5-[2-丙基]-1，3-环己二酮；再与丙酸酐反应丙酰化，最后与0-3-氯-2-丙烯基羟胺肟化，得到目标化合物烯草酮。
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A series of polyether based polyurethaneurea aqueous dispersions with well-defined hard segments were prepared by fractional steps with polyether polyol, 4,4'-diphenylmethane diisocyanate, dimethylolpropionic acid, 1,4-butanediol, isophorone diisocyanate and ethylenediamine.
以二苯基甲烷二异氰酸酯、二羟甲基丙酸、1，4-丁二醇、异佛尔酮二异氰酸酯和乙二胺为硬段，聚醚多元醇为软段，通过分子设计采用分步合成法，制备了具有规整硬段和良好分散性能的聚醚型聚氨酯脲水分散液。
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A series of polyether based polyurethaneurea aqueous dispersions with well-defined hard segment s were prepared by fractional steps with polyether polyol, 4,4′-diphenylmethane diisocyanate,dimethylolpropionic acid,1,4-butanediol,isophorone diisocyanate and ethylenediamine.
以二苯基甲烷二异氰酸酯、二羟甲基丙酸、1，4-丁二醇、异佛尔酮二异氰酸酯和乙二胺为硬段，聚醚多元醇为软段，通过分子设计采用分步合成法，制备了具有规整硬段和良好分散性能的聚醚型聚氨酯脲水分散液。
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The chemical constituents of extracts of Tamarindus indica L were determined by GC-MS. The relative contents of constitutes were determined by area normalizing method. 48 compounds were identified, amounting to total mass fraction 98.5%. The main compounds were 5-methyl-2(3H)-furanone, diethyl succinate, furfural, hexadecanoic acid, linolenic acid, 5-methylfurfural, oleic acid, linoleic acid, etc.
并利用气相色谱仪-质谱仪对罗望子萃取物的化学组成进行了分析鉴定，并用面积归一化法测定了各种成分的质量分数，共鉴定了48种成分，占总质量分数为98.35%，其中主要成分为：5-甲基-2(3H)-呋喃酮、丁二酸二乙酯、糠醛、十六酸、亚麻酸、5-甲基糠醛、油酸、亚油酸等。
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Results The mixing, loading and storing processes of the construction, might generate lots of occupational hazards, including toluene, dimethylbenzene, trimethylbenzene, isopropanol, butyl alcohol, propanol, methyl methacrylate, butyl acetate, methyl isobutyl ketone, methyl ethyl ketone, acetic ether, nitro-cotton, n-hexane, n-heptane, carbinol, ethanol, ethyl propionate, diisobutyl ketone, glycol ether, isoamyl acetate, 2,4-toluene diisocyanate, isophorone, noise, power frequency electric fields.
结果 该项目在混兑生产和装卸、仓储过程中，可能产生的职业病危害因素主要有甲苯、二甲苯、三甲苯、异丙醇、丁醇、丙醇、甲基丙烯酸甲酯、乙酸丁酯、甲基异丁基甲酮、丁酮、乙酸乙酯、硝化棉、正己烷、正庚烷、甲醇、乙醇、乙酸丙酯、二异丁基甲酮、乙二醇乙醚、乙酸异戊酯、2，4甲苯二异氰酸酯、异佛尔酮、噪声、工频电场。
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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。
- 更多网络解释与丁酮二酸的相关的网络解释 [注：此内容来源于网络，仅供参考]
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benzophenone：苯酮
例如:丁叔基甲氧基二苯酰甲烷(Avobenzone)、苯甲酮(oxybenzone)、对氨基苯甲酸(PABA)、甲氧基肉桂酸辛酯(Octinoxate)、苯基苯并咪唑磺酸(phenylbenzimidazole sulfonic acid)等;而干性敏感皮肤则要避免会使皮肤干、痒、红、痛的各种成分,例如二苯酮(Benzophenone)、苯甲酸(padi
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Ethyl butyrate：丁酸乙酯
...有大量的客户需要,长期求购丁酸乙酯(Ethyl Butyrate)出口,有意者请来电,来函. ...有大量的客户需要,长期求购丁酸(Butyric Acid)出口,有意者请来电,来函. ...有大量的客户需要,长期求购丁二酮(Biacetyl)出口,有意者请来电,来函.
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Ethyl Loflazepate：氯氟卓乙酯
二、含有扎莱普隆(Zaleplon)、氯氟卓乙酯(Ethyl Loflazepate)、唑吡坦(Zolpidem)、羟基丁酸(Hydroxybutyric acid)成分的制剂,以及氨酚氢可酮片(耐尔可)、氨酚羟考酮片(泰勒宁片)、氨酚羟考酮胶囊(泰勒宁胶囊)3种含麻醉药品的复方制剂均按第二类精神药品管理,
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lactic：乳的, 乳汁的, 由乳汁取得的
glutamic-oxaloacetic谷氨酸草酰乙酸,丁酮二酸 | lactic乳的, 乳汁的, 由乳汁取得的 | dehydrogenase脱氢酶,去氢酶
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pyruvic acid：酮酸
在植物界中,生物素亦可进行下列的反应:丙酮酸(pyruvic acid)的羧基化,合成草醋酸盐(oxaloacetic acid). 将丙酸(propionate)经甲基丙二醯辅脢A (methyl malonyl Co-A)而转化成丁二酸盐(succinate). 其它涉及的辅脢可能还有乙醯辅脢A(acetyl Co-A),
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ketal：缩酮
水型油墨中加入可水解的挥发性缩酮(Ketal)也可防止油墨酸败. 例如2,2-二甲氧基丙(或丁)烷,2,2-二乙氧基丙(或丁)烷等. 在酸存在下,缩酮是极易水解的. 每克分子缩酮水解后可产生一克分子酮和两克分子醇.
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sunset yellow FCF：日落黄
2. 食品法规委员会(CAC)的规定:{由联合国粮农组织(FAO)和世界卫生组织(WHO)联合组成}没食子酸丙酯 (PG) 2,6-二叔丁基.对苯二酚(TBHQ) 2,4,5-三羟基苯丁酮(THBP)1. L-抗坏血酸(L-Ascorbic Acid)及其钠盐日落黄(sunset yellow FCF)的呈橘黄色 ,易溶于水、甘油,微溶于乙醇,不溶于油脂.