查询词典 esters

Part two: Using chloroformic ester reacted with potassuim thiocyanate to get thiocyanic esters. Then reacted with biological substituted pyrimidinamine to synthesize forty two thiourea compounds, thirty eight of them are new compounds. Their structures have been charactered by IR, 1H NMR and elemental analysis.

第二部分：先以氯甲酸酯和硫氰酸钾为原料合成异硫氰酸酯，再与有生物活性的取代氨基嘧啶反应，合成了一系列新的取代嘧啶基硫脲类化合物，合成的42个化合物中有38个为首次合成的新化合物，结构经元素分析、IR及~1H NMR得到确证。

The results showed that the solubility of Jatropha curcas L. seed oil in methanol in creased at the presence of methyl esters, which could enhance mass transfer.

结果表明，脂肪酸甲酯的存在可有效提高麻疯树籽油在甲醇中的溶解度，因此可在一定程度上改善传质效果

TDI, toluene two different cyanic acid esters are manufactured PU paint raw materials, PU paints both beautify and furniture, flooring and wooden ornaments, and cheaper prices, favored by consumers, but inferior to the large number of floating PU paints containing the TDI can cause great harm.

TDI即甲苯二异氰酸酯，是制造聚氨酯油漆的原料，而聚氨酯油漆既美化家具、地板和木饰品，价格又比较便宜，深受消费者青睐，但劣质的聚氨酯油漆含有大量游离的TDI，能对人体造成极大的伤害。

The main compositions of LPs include shorter chain carboxylic acid derivatives, furan derivatives, cyclopentanone, phenol derivatives, benzene derivatives, cinnamic acid derivatives, longer chain carboxylic esters and sterides.

秸秆在亚/超临界醇中液化产生的LPs的主要组成成分包括短链脂肪酸衍生物、呋喃衍生物、环戊酮衍生物、含有取代基的肉桂酸衍生物、芳醛或酮衍生物、苯酚衍生物、苯衍生物，长链脂肪酸衍生物和甾族化合物。

This invention relates to the manufacture of phenyl and phenyl ethyl malonic esters and more particularly to the manufacture of dialkyl phenylmalonates and compounds are useful as intermediates in the manufacture of medicinals.

本发明和苯基苯乙基丙二酸酯的生产有关，尤其是和二烷基苯基丙二酸酯的生产有关，它们在生产药品的过程作为中间体非常有用。

Preferred polar volatile liquids are dialkyl ketones alkyl esters of alkane carboxylic acids and alkanols especially such liquids containing up to and including a total of 6 carbon atoms.

首选极地挥发性液体烷基酮，羧酸的烷烃和醇类，尤其是含了这种液体烷基酯的，并包括了6个碳原子。

Polyelectrolyte hydrogels based on n -alkyl methacrylate esters,acrylic acid and acrylamide cross-linked with 4,4′-diazobenzene were prepared.

合成了不同疏水链长的甲基丙烯酸酯、甲基丙烯酰胺及丙烯酸与 4 ，4′-二偶氮苯交联共聚的聚电解质凝胶。

Hydrogels based on n -alkyl methacrylate esters,acrylic acid and acrylamide cross-linked with 4,4′-diazobenzene were preparared.

合成了带不同疏水侧基的甲基丙烯酸酯、甲基丙烯酰胺及丙烯酸与 4，4′二偶氮苯交联共聚的凝胶。

Hydrogels based on n -alkyl methacrylate esters,acrylic acid and acrylamide cross-linked with 4,4′-diazobenzene were preparared,and their deswelling kinetics was studied.

研究了甲基丙烯酸十二烷或丁酯、甲基丙烯酰胺及丙烯酸与4 ，4′-二偶氮苯交联共聚凝胶的消溶胀动力学。

Then the catalysts of high activities were selected to be used in the preparation of mixed dibasic acid dimethyl esters.Mixed dibasic acids are byproducts of hexanedioic acid. In this article DBE were synthesized.

己二酸生产过程中副产大量的混合二元酸，本文选用DBA和甲醇为原料，分别采用磷钨杂多酸、PW_(12)/C和PW_(12)/SiO_2为催化剂，合成了绿色环保高沸DBE。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。