介绍了乙烯—乙酸乙烯酯(evm)共聚合物的聚合工艺、性能及应用。
Introduced the polymerization craft, performance and application of ethylene-vinyl acetate (EVM) copolymer.
研究了有机相中脂肪酶催化以单糖和乙酸乙烯酯或乙酸酐为底物的糖酯合成反应。
The synthesis of monosaccharide ester catalyzed by lipase in organic solvents was studied, where monosaccharides and vinyl acetate or acetic anhydride serve as substrates.
通过硅橡胶与乙烯-乙酸乙烯酯(EVA)共混，制作了硅橡胶与eva的复合海绵材料。
The method of reinforcing silicone rubber sponge was introduced by blending silicone rubber with EVA.
纳米粒子粘合剂而且还能够替代多乙酸乙烯酯、聚乙烯醇（PVA和PVOH）等，将图案碾压到纸板上。
The nanoparticle adhesives could also help replace the polyvinyl acetate, PVA, and polyvinyl alcohol, PVOH, used to help laminate graphics onto cardboard.
通过用选自聚乙酸乙烯酯、聚异戊二烯、或其共混物中的聚合物涂布垂直定向碳纳米管，从而形成复合材料膜。
The composite film is formed by coating perpendicularly-aligned carbon nanotubes with a polymer selected from poly (vinyl acetate), poly (isoprene), or blends thereof.
乙酸乙烯酯作为酰基供体兼溶剂，在有机相中1 -苯乙醇与乙酸乙烯酯在脂肪酶的催化下发生不可逆的转酯化反应。
To determine the effection of immobilization, the selectively transesterification of 1-phenyl ethanol, with vinyl acetate as both the acyl donor and the solvent, was taken as the model reaction.
其次，利用硅甲基接枝改性MCM-48与聚乙酸乙烯酯通过聚合前和聚合后复合途径制备了无机-有机纳米网络粒子。
Second, inorganic-organic nononetwork particles have been prepared with silylated MCM-48 through post-polymerization composite path and a pre-polymerization composite path.
它们是乙烯，丙烯，异丁烷，环丁烷，丁烯类化合物三个，甲基乙基醚，乙基异丙基醚，乙酸乙酯。
Ten of them were identified. They are ethylene, propylene, isobutane, cyclobutane, three isomeric butenes, methyl ethyl ether, ethyl isopropyl ether, and ethyl acetate.
采用高效导向筛板与填料对乙酸乙烯-乙酸甲酯精馏塔进行了技改设计。
The high efficient flow guided sieve tray and packing are adopted in the innovation of vinyl acetate Methanol methyl acetate distillation column.
方法：（1）以硅胶柱色谱法，乙酸乙酯-石油醚梯度洗脱，自何首乌中提取分离二苯乙烯苷单体成分。
Methods: (1)To separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.
就双乙烯酮与异丙醇在不同催化剂下反应生成乙酰乙酸异丙酯的条件及结果进行了讨论，并提供了实验数据。
The conditions and results of the reaction of diketene with isopropyl alcohol in the presence of different catalysts are discussed and some experimental data are provided.
加恒沸剂共沸蒸馏和乙酸萃取反应精馏过程。乙醛缩合法生产乙酸乙酯的三塔连续精馏过程以及乙烯与乙酸气相催化反应的加水精制工艺过程。
Three-tower continuous distillation process of ethyl acetate from aldehyde condensation and purification by gas-phase oxidation of acetic acid and ethylene were also discussed.
方法：硅胶柱色谱法，乙酸乙酯-石油醚梯度洗脱，自何首乌中提取分离二苯乙烯苷单体成分。
Methods: (1) to separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.
方法：硅胶柱色谱法，乙酸乙酯-石油醚梯度洗脱，自何首乌中提取分离二苯乙烯苷单体成分。
Methods: (1) to separate stilbene glycoside by using silica gel column chromatography with gradient elution consisting of ethyl acetate and petroleum ether.
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