三聚甲醛

树脂催化剂合成三聚甲醛再生方法的研究

A Study of I.E.Catalyst Regenerating Method in the Synthesis of Trioxymethylene

以萘为单体、三聚甲醛为交联剂，可在对甲苯磺酸、浓硫酸或氯磺酸的催化下，在150～160℃下反应得到未交联的缩合多核芳香烃树脂（B－树脂）。

Uncross linked condensed polynuclear aromatics ( COPNA ) resins ( B resins ) were prepared at 150 ℃~ 160 ℃ in the presence of an acid catalyst such as p toluene sulfonic acid , sulfuric acid or chlorosulfonic acid .

在微型高压反应釜中（120ml），考察了酸催化三聚甲醛和甲酸甲酯制备羟基乙酸甲酯的偶联反应，并对酸催化剂中H+的作用进行了研究。

Acid catalyst and H + catalysis in the acid catalysts were studied for synthesis of methyl glycolate via coupling of methyl formate and trioxane in a microform high-pressure autoclave ( 120mL ) .

三聚甲醛萃取&精馏新工艺及过程优化

Simulation and optimization of a new process for trioxane extraction-distillation

反应条件及添加惰性物质对三聚甲醛合成反应的影响

Effects of Reaction Conditions and Adding Inert Substances on the Synthesis of Trioxane

辐照三聚甲醛及其聚合物的介电谱

Dielectric spectra of irradiated trioxane and its polymer

用模型参数推算了常压下水三聚甲醛系统的共沸组成和共沸温度。

The azeotropic temperature and compositions of the trioxane-water system under atmospheric pressure were also predicted .

三聚甲醛的等离子体引发固相开环聚合等离子体引发聚乙烯表面肝素化及其生物相容性

SOLID POLYMERIZATION OF TRIOXYMETHYLENE BY PLASMA INITIATION Polyethylene Surface Heparinization by Plasma Initiation and Its Biocompatibility

甲酸甲酯与三聚甲醛合成乙醇酸甲酯Ⅲ.羰化反应机理的初步探索

Synthesis of methyl glycolate by coupling methyl formate with trioxane ⅲ . Exploration of carbonyl reaction mechanism

采用微波辐射技术，以盐酸作为催化剂，三聚甲醛、苯乙酮、苯胺为原料一步反应合成了β苯胺基苯丙酮。

With hydrochloric acid as the catalyzer , β - aniline phenylacetone was synthesized with aniline , trioxymethylene and acetophenone under microwave irradiation .

在辐照聚合制得的聚三聚甲醛的回转图上，除出现普通聚甲醛的衍射点外，还存在着一些新的衍射斑点。

In the rotation diagram of polytrioxane obtained by γ - irradiation of trioxane there appear some new diffraction spots in addition to that for ordinary polyoxymethylene .

辐照聚甲醛聚合机理、结构与形态的研究&Ⅱ.三聚甲醛单晶辐照引发固相聚合产物的亚微观结构

INVESTIGATION ON THE POLYMERIZATION MECHANISM , STRUCTURE AND MORPHOLOGY OF RADIATION-POLYMERIZED POLYOXYMETHYLENE ⅱ . The Submicroscopic Structure of the Products of Radiation Induced Polymerization in Solid State of Trioxane Single Crystals

甲酸甲酯与三聚甲醛偶联合成乙醇酸甲酯Ⅰ.硫酸催化反应条件优选目的：优选丹参中丹参酮ⅡA的醇提工艺。

Synthesis of methyl glycolate by coupling of methyl formate with trioxane I. Study of optimum reaction conditions with sulphuric acid as catalyst Objective : The extracting procedures of tanshinones ⅱ _A with ethanol .

以均四甲苯为原料，三聚甲醛为交联剂，在质子酸催化作用下合成以亚甲基桥连接的齐聚芳烃化合物，在本工艺条件下主要形成二、三、四聚体。

The aromatic oligomers coupling with methylene bridge , principally di , tri and tetramers , were synthesized from 1,2,4,5 tetramethylbenzene by a protonic acid as the catalyst and with trioxymethylene as the cross linking agent .

结合木质素的基本结构和化学改性，综述了其应用于酚醛树脂、脲醛树脂、三聚氰氨甲醛树脂和聚氨酯胶粘剂等常用木材胶粘剂及环保木材胶粘剂中的现状。

Based on the fundamental structures of lignin and chemical modifications , the main applications of industrial lignin to wood adhesives , together with conventional resins of wood adhesive , including phenol-formaldehyde , urea-formaldehyde , melamine-formaldehyde and polyurethane , as well as environmentally friendly wood adhesive , were reviewed .