合成碱绿色4的最佳条件包括：尿素和氯化锌作为催化剂，四氢呋喃和双色。
The optimal conditions for synthesis of alkali green 4 include the carbamide and zinc chloride as catalyst, chloranil and bichrome.
用脂肪酶在四氢呋喃中催化合成硬脂酸酯。
The synthesis of fatty acid ethyl ester in THF catalyzed by lipase was studied.
作为抗真菌剂的2，2，4-三取代的四氢呋喃衍生物。
Derivatives of 2,2,4-trisubstiotuted tetrahydrofuran as anti fungal agents.
分析聚四氢呋喃供求关系现状，对市场需求进行了预测。
To analyze the market situation of PTMEG at home and abroad.
考察了大孔强酸性树脂对1，4 丁二醇脱水制四氢呋喃的催化作用。
The catalysis of big pore strong acid resin for 1,4-butanediol dehydration to tetrahydrofuran is investigated.
高立体选择性合成反式-2，5-二取代四氢呋喃是期待解决的关键问题。
The key problem is to synthesize high stereoselectively trans- 2,5- disubstituted tetrahydrofurans.
对丙酮、四氢呋喃、三乙胺、水混合物的分离进行了工艺流程设计和实验研究。
The process flow was designed and experimentally studied for separation of acetone, tetrahydrofuran (THF), triethylamine and water mixture.
采用四氢呋喃溶解聚氯乙烯、热甲苯溶解聚乙烯材料以提取样品中的目标化合物；
The target compounds were extracted with polyvinyl chloride materials dissolved in tetrahydrofuran or polyethylene materials dissolved in hot toluene.
聚合物分子在四氢呋喃稀溶液中的幂指数为0.14，说明该聚合物具有支化结构。
The power index was 0.14, which indicated that the polymer had branched molecular structure in dilute solution of tetrahydrofuran.
当聚四氢呋喃二醇与癸二醇的重量配比小于70/30时，共聚物具有明显的液晶性。
These polymers were found to be liquid crystalline when the feed ratio of poly(oxytetramethylene)glycol to 1,10-decanediol was less than 70 to 30.
继用氯仿-四氢呋喃-水(500：500：8)为流动相，梯度洗脱其他强保留组分。
Chloroform - tetrahydrofuran - water (500:500:8) was used as mobile phase for the gradient elution of other strongly retained substances.
建立了合适的吸附动态模型，用于分析四氢呋喃中的微量水在4a分子筛上动态吸附特性。
The dynamic adsorption model that described the characteristics of small amount of water from tetrahydrofuran on 4a molecular sieve was developed.
所得的三环化合物经热分解和加氢反应，制备顺式和反式- 2,5 -二取代四氢呋喃。
The cis - or trans-2, 5-disubstituted tetrahydrofurans were provided by the hot decomposition and then hydrogenation of tricycle compounds produced.
用汽液平衡釜测定了乙酸乙酯-异丙醚和乙酸乙酯-四氢呋喃二组分物系的汽液平衡数据。
Vapor-liquid equilibrium data of ethyl acetate-isopropyl ether and ethyl acetate-tetrahydrofuran binary systems were measured at atmospheric pressure 101.
结果表明，四氢呋喃是良好的共溶剂，游离脂肪酸含量高的废食用油有利于共溶体系的形成。
The results showed that tetrahydrofuran was a better cosolvent and the waste edible oils containing abundant free fatty acids was liable to form miscible system.
为减少体系中的DVB ，添加了PCS的良性溶剂四氢呋喃，使陶瓷产率达到了76 %。
Tetrahydrofuran(THF) is added for its good dissolving effect on PCS to decrease DVB and a 76% ceramic yield is obtained.
通过使用一定配比的乙醇和四氢呋喃作混合溶剂，第一次培养出尿素和间甲酚的复合物单晶。
The complex crystal ofm-cresol and urea has been firstly cultivated by using a mixed solvent including ethanol and THF at a proper ratio.
在四氢呋喃存在下，将丙烯和丁基锂直接反应合成了未见文献报道的烯丙基锂四氢呋喃配合物。
New allyl lithium THF complex was prepared conveniently by the reaction of propene with n-butyl lithium in the presence of tetrahydrofuran.
分析国内外四氢呋喃的生产消费情况，对未来的需求进行预测，并对我国发展潜力进行了分析。
To analyze production and consumption situation of tetrahydrofuran at home and abroad. To assess its demand and potential development of tetrahydrofuran in China.
目的：建立一种气相色谱法测定原料药头孢唑肟钠中二氯甲烷和四氢呋喃有机溶剂残留量的方法。
Objective: We detected the content of methylene chloride and diethylene oxide in Ceftizoxime Sodium using head-space GC method.
以降解四氢呋喃的气单胞菌THF01为对象，采用液体培养研究了各种理化因素对其生长的影响。
The effect of factors to the growth of aeromonas THF01 which degraded tetrahydrofuran was studied by liquid culture.
采用丙酮、四氢呋喃、乙酸丁酯和四氯化碳等有机溶剂对双酚a聚碳酸酯(BAPC)进行诱导结晶。
Acetone, tetrahydrofuran, butyl acetate and carbon tetrachloride in liquid state were used to induce the crystallization of bisphenol-A polycarbonate (BAPC) film.
介绍了四氢呋喃聚醚(PTMG)聚氨酯弹性体的性能。讨论了其化学结构对PU弹性体环境性能的影响。
The properties of PTMG-PU were introduced in this paper, and the effects of the chemical structure on the PU elastomer properties were also discussed.
以发烟硫酸-高氯酸为催化剂，通过四氢呋喃的阳离子开环聚合合成了窄分子量分布的聚四氢呋喃(PTHF)。
Polytetrahydrofuran (PTHF) with narrow molecular mass distribution was prepared by cationic ring-opening polymerization of tetrahydrofuran using H_2SO_4 · SO_3-HClO_4 system as a catalyst.
全氟四氢呋喃（PF THF）是一种重要的有机全氟环醚化工产品。目前其在诸多领域得到日益广泛的应用。
Perfluorotetrahydrofuran(PFTHF) is an important organic perfluorocyclic ether compounds, which is now widely used in more and more fields.
其次，本文用正交实验设计和单因素寻优等有关实验方法对端羟基环氧环己烷-四氢呋喃共聚醚的合成工艺进行了研究。
Secondly, with the orthogonal design method and single-factor-experiment, the technics of synthesizing Hydroxyl-terminated copolymer of CHO -thf have been studied in this paper.
以硼酸三正丁酯、甲醇锂为主要原料，甲醇和四氢呋喃为溶剂，利用溶胶-凝胶法通过优化工艺制备了掺锂硼酸盐凝胶。
Li2O-B2O3 composite gels were successfully prepared from tri-n-butyl borate and lithium methoxide dissolved in methanol and tetrahydrofuran via sol-gel technique.
合成了两个具有果香香气的香料：2-羟基-5-正戊基四氢呋喃及2-己氧基-5-正戊基四氢呋喃；证实了其结构。
Two compounds of fruity aroma 2-hydroxy-5-pentyl tetrahydrofuran and 2-hexaoxy -5-pentyl tetrahydrofuran were prepared, and their structures confirmed.
其位移效应规律对于双环氧四氢呋喃木脂素的结构确定，尤其糖的连接位置和羟化位置的指定，提供了一定的判断依据。
The rules of displacement provided suggestion for the confirmation of double-tetrahydrofuran lignans, especially the position of hydroxylation and glycosylation.
四氢硼钠在己烷和甲苯溶剂中，不易引发丙烯酸第三丁酯的聚合反应，但在吡啶和四氢呋喃中能引发聚合，亦得到非晶态聚合物。
NaBH4 in hexane or toluene would not initiate the polymerization unless pyridine or THF was used as solvent, but an amorphous polymer was the product.
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