循环使用10次后,芳香酯的选择性仍为100%。
After 10 times reuse, the selectivity of the ester was still 100%.
该文综述了微波辅助合成芳香酯的研究进展,并展望了微波技术在芳香酯合成中的发展前景。
This article reviewed the current situation of the MAS of aromatic esters and prospected its future development.
在氟化钾催化下,芳香醛与氰乙酸乙酯发生克脑文格尔缩合反应,得到高产率的缩合产物。
The knoevenagel condensation of aromatic aldehydes with ethyl cyanoacetate proceeds smoothly in the presence of potassium fluoride giving products in high yield.
第二种聚酰亚胺聚合物是芳香族四酸二氢化物与芳香族二异氰酸酯反应生成的。
The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate.
利用IPN技术将芳香族异氰酸酯引入互穿聚合物网络涂层,取代部分脂肪族异氰酸酯。
An aromatic isocyanate is introduced into an IPN coating system to partly substitute the aliphatic isocyanate.
本研究对生产偏酐所产生的母液中含有的芳香族羧酸加以回收,用于生产混合酯增塑剂。
This study focused on the recovery of aromatic polycarboxylic acids from the mother liquor of manufacturing trimellitic anhydride and it's application for making mixed plastifier.
结果表明:烈香杜鹃精油化学成分以高级脂肪酸酯、酮、芳香族化合物及芳香杂环化合物为主。
The results showed that the volatile constituents of Rhododendron athopogoides Maxim, mainly includes aliphatic acid and ester, aldehyde, ketone, aromatic and its heterocyclic compounds.
在氟化钾催化下,芳香醛与氰乙酸乙酯发生克脑文格尔缩合反应,得到高产率的缩合产物。且只得到E式异构体。
The knoevenagel condensation of aromatic aldehydes with ethyl cyanoacetate proceeds smoothly in the presence of potassium fluoride giving products in high yield. Only the E isomers could be isolated.
探讨了聚醚类芳香族聚氨酯丙烯酸酯的合成工艺及其性能影响因素。
The synthesis of polyether aromatic polyurethane acrylate and its influencing factors were discussed.
在室温下,二茂铁甲酰基异硫氰酸酯与芳香胺反应生成新颖的二茂铁取代非对称硫脲。
At room temperature, several novel unsymmetric ferrocenyl thiourea compounds were synthesized by reaction of substituted aniline with ferrocenyl formyl isothiocyanate.
主香成分为乙酸龙脑酯、水杨醛、丙二酸二乙酯、亚麻酸乙酯等30个化合物,占芳香油总量的76 95 %。
The 30 main compounds are bornyl acetate , salicylic aldehyde, diethyl malonate, ethyl linolenate, etc, which amount to 76.95 % content of the oil.
由于在共混物中引入了芳香族氨酯键,增加了醇酸树脂漆膜的附着力、硬度、固化速度及表面能。
The introduction of polyurethane groups to the blend improved the adhesivity, hardness, curing speed and surface energy of alkyd resin.
综述了以脂肪族酯和芳香族酯为单体制备生物可降解脂肪族-芳香族共聚酯的研究进展。
Progress on biodegradable aliphatic-aromatic copolyesters based on aliphatic and aromatic diacids, diols and ester monomers was reviewed.
各种芳香二酸和各种二乙烯基醚化合物在有机溶剂存在下加热反应得到新型的酯缩醛聚合物。
Various aromatic diacids and various divinyl ether compounds are heated to react in organic solvent to obtain novel ester acetal polymers.
芳香酸酯具有较佳的调变作用,红外光谱研究了它与催化剂组份之间的相互作用。
The aromatic ester appeared to have the best modification effect and the interaction between components in this catalyst system and the aromatic ester…
本论文使用不同类型芳香醛与氨基酸酯的加成反应合成了一系列氨基酸酯亚胺类化合物。
A series of imine esters were synthesised by the addition of amino acid esters to aldehydes.
芳香族异氰酸酯制成的聚氨酯比脂肪族异氰酸酯的耐老化性能好得多。
The results show that amine content increases with ageing time and polyurethanes based on aromatic isocyanate has much better ageing resistance than ones based on aliphatic isocyanate.
所制备的生物柴油中成分较为复杂,各种脂肪酸甲酯的总含量达到98.59%,且不含芳香烃。
The elements contained in the production of the biodiesel are complex, the total contents of methyl ester come to 98.59%, and aromatic hydrocarbon is not contained.
第二种聚 酰亚胺聚合物是芳香族四酸二酐与芳香族二异氰酸酯,在有机溶剂中,在催化剂的作用下,一步法缩合反应制备得到;
The second polyimide polymer is prepared with aromatic tetracid dihydride and aromatic diisocyanate and through a one-step condensation reaction in organic solvent and under the action of catalyst.
结果表明,纯种固态发酵能代谢生成酸、醇、醛、酮、酯及芳香族化合物等多种物质。
The results showed that MTDF-01 could produce acids, alcohols, aldehydes, ketones, esters and aromatic compounds by pure solid fermentation.
本发明涉及各种芳香二酸酯缩醛聚合物及其合成方法。
The invention relates to various aromatic diacid ester acetal polymers and a synthesis method of the aromatic diacid ester acetal polymers.
由对乙酰氧基苯甲酸、对苯二酚二乙酯、2,6-萘二甲酸及间苯二甲酸四种单体通过熔融缩聚反应,合成了全芳香族四组分共聚酯。
The wholly aromatic four-component copolyesters were prepared from p-acetoxy-benzoic acid, hydroquinone diacetate, 2,6-naphthalene dicarboxylic acid and isophthalic acid by melting polycondensation.
由对乙酰氧基苯甲酸、对苯二酚二乙酯、2,6-萘二甲酸及间苯二甲酸四种单体通过熔融缩聚反应,合成了全芳香族四组分共聚酯。
The wholly aromatic four-component copolyesters were prepared from p-acetoxy-benzoic acid, hydroquinone diacetate, 2,6-naphthalene dicarboxylic acid and isophthalic acid by melting polycondensation.
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