Biodiesel, fatty acid alkyl ester, is made from renewable bioenergy such as vegetable oils and animal fats.
生物柴油，即脂肪酸甲酯，是以动植物油为原料生产的可再生绿色能源。
It is indicated that the performance of the flow improver is influenced by the carbon distribution of the alkyl ester and then paraffin distribution of the diesel.
此类柴油流动改进剂的酯基侧链碳数分布和柴油的正构烷烃分布是影响其效果的主要因素。
In this investigetion, NMR data also reveals the segmental motions along ester alkyl side-chain in samples.
NMR参数还揭示了较长酯烷基侧链链段运动情况。
Several alkyl rosin ester rosin sizes and glycerin rosin ester rosin size were prepared and used for paper sizing under neutral alkaline conditions.
本研究制备了多种烃基松香酯松香施胶剂及松香甘油酯松香施胶剂，并对其在中、碱性造纸施胶中的应用进行了探讨。
Their extraction ability markedly decreases with the increase of the steric hindrance from ester alkyl group.
萃取能力随着酯烷基空间位阻的增大而显著降低。
Sulfuric acid dimethyl ester, one of the important chemical raw materials ACTS as the methylating agent in the organic synthesis for the purpose of replacing alkyl halide.
硫酸二甲酯是一种重要的化工原料，在有机合成中用于代替卤代烷作为甲基化剂。
For the fermented apple pomace, ester took up more than 50% in the total volatile products, with less than 15% of alkyl -, aldehyde and ketone.
发酵后苹果渣中挥发性物质中50%以上为酯类物质，醛、酮、酸类相对含量不到15%。
NAGA is produced by the amidation of N-alkyl amine and fatty acid ester in the presence of basic catalyst.
烷基萄糖胺与脂肪酸酯在碱催化下反应生成naga。
The invention relates to a method for preparing alkyl phosphonic acid, which comprises the following steps: (1) an alkali metal reacts with phosphite ester to obtain phosphite ester;
本发明涉及一种烷烃基膦酸制备方法，包括下列步骤：（1）碱金属与亚磷 酸酯反应，得到亚磷酸酯盐；
The invention relates to a method for preparing alkyl phosphonic acid, which comprises the following steps: (1) an alkali metal reacts with phosphite ester to obtain phosphite ester;
本发明涉及一种烷烃基膦酸制备方法，包括下列步骤：（1）碱金属与亚磷 酸酯反应，得到亚磷酸酯盐；
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