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

红外光谱检测解聚产物是纯度很高的对苯酯（DMT）单体和乙醇。

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

确定以硫酯为N——基化,对对氨基苯PABA进行N——基化.

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

本文对醛和基氯硅烷反应合硅基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.

介绍用醇醇解法把聚酯或共聚酯解聚元酯和元醇。

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-基酰胺作，氰尿、苄氯为原料合了氰尿三苄基酯。

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，在硫介质中，超痕量基乙醛肟能灵敏地加速溴钾氧化基黄褪色的指示反应。

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

研究了碳丙烯酯和醇经酯交换制备碳酯的催化及反应工艺条件。

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，在乙酰丙酮钼、苯、基亚砜(DMSO)的苯液中催化重排合柠檬醛，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.

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