The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).

红外光谱检测产物是纯度很高的对苯二甲酸二甲酯（DMT）单体和乙二醇。

It is ascertained that the PABA may be N-dimethylated using dimethyl sulfate as a methylation agent.

确定以硫酸二甲酯为N——甲,对对氨苯甲酸PABA进行N——二甲.

In this thesis, the reaction of aldehydes with dimethyl -- dichlorosilane producingdimethylsilyl bis -- enol ethers has been studied.

本文对醛和二甲二氯硅烷反应合二甲硅双烯醇醚进行了研究。

The polyester or copolyester can be converted into dimethyl terephthalate of binary acid and glycol by method of methanolysis.

介绍用甲醇醇法把酯或共酯二元酸二甲酯和二元醇。

Tribenzyl isocyanurate was prepared by reaction of isocyanuric acid with benzyl chloride and with N,N dimethyl formamide(DMF)used as solvent.

采用N，N-二甲甲酰胺作溶，异氰尿酸、苄氯为原料合了异氰尿酸三苄酯。

It has discovered that trace dimethyl glyoxime can sensitivly catalyize the discoloration of dimethyl yelloue by potassium bromate in sulphuric acid.

研究发现，在硫酸介质中，超痕量二甲乙二醛肟能灵敏地加速溴酸钾氧二甲黄褪色的指示反应。

The catalysts and reaction conditions have been studied for esterinterenange between propenyl carbonate and methanol to produce dimethyl carbonate (DMC).

研究了碳酸丙烯酯和甲醇经酯交换制备碳酸二甲酯的催及反应工艺条件。

Citral was synthesized by catalytical rearrangement of dehydrolinalool in toluene solution with the present of molybdenyl acetylacetonate, benzoic acid and dimethyl sulfoxide (DMSO).

摘要采用脱氢芳樟醇为原料，在乙酰丙酮酸钼、苯甲酸、二甲亚砜(DMSO)的甲苯溶液中催重排合柠檬醛，考察了柠檬醛在不同体系中的热敏性。

The separation of three-component system of cyclohexane,cyclo-hexene and benzene by extract rectification with a mixed solvent,comprising hexyl dicyanide and dimethyl acetylamine has been studied.

选用己二腈-二甲乙酰胺组的混合溶，对环己烷、环己烯和苯组的三元体系进行了萃取精馏。