Acetal reaction

Niobic acid catalysis in Acetal reaction

铌酸催化缩醛反应

A synthetic process for hydroxylamine sulfate using reaction-extraction coupling technology Acetal reaction in separation of 1,3-propanediol ( PDO ) by coupling method of reaction-extraction was studied .

研究了用反应萃取耦合法分离1,3-丙二醇过程中的关键反应-缩醛反应。

Study on the Acetal Reaction with Heterogeneous Supported Heteropoly Acid as Catalysts

固载杂多酸催化缩醛反应的研究

Acetal Reaction in Separation of 1,3-Propanediol by Coupling Method of Reaction-Extraction

反应萃取耦合法分离1,3-丙二醇中缩醛反应的研究

Preparation of Polyvinyl Alcohol / Polyacrylic Acid Pervaporation Membrane Modified by Blending and Acetal Reaction

渗透蒸发膜的研制&聚丙烯酸与聚乙烯醇等共混及其缩醛化

Preparation of para-tertiary butyl phenolic resin by acetal reaction

缩醛法合成对叔丁基酚醛树脂

The effects of light intensity , reaction time and the size of photocatalytic reactor on benzaldehyde acetal reaction was investigated . The results showed that not only benzaldehyde acetal but reduction of benzaldehyde were produced .

考察了光强、反应时间及反应器尺寸对微反应器中苯甲醛的光催化缩醛反应影响，结果表明微反应器中不仅发生苯甲醛缩醛反应，更容易发生苯甲醛的还原反应。

Polyvinyl alcohol sponge were prepared by the acetal reaction , and the introduction of chitin and chitosan to obtain a blend sponge system , study the impaction of the addition of chitin and chitosan on the structure and property .

将聚乙烯醇经缩醛化反应制备聚乙烯醇海绵，并引入甲壳素和壳聚糖制得复合海绵，考察甲壳素和壳聚糖的添加量对结构和性能的影响。

Particularly , the catalyst used in the acetal reaction is innovative method in our thesis . ( 2 ) Using gas chromatography , we analysis the Cyfluthrin and key intermediate . The method is simple and feasible , accurate and reliable and can meet the quality requirements analysis .

其中，缩醛化反应所用催化剂有创新性。（2）用气相色谱对氟氯氰菊酯及关键中间体进行分析，简便可行、准确可靠，能满足产品的质量分析要求。

Usually , methylal was prepared through the reversible acetal chemical reaction by methanol and formaldehyde and a mixture of methylal , methanol and water were obtained .

甲缩醛的制备主要是通过甲醇和甲醛的缩醛可逆化学反应得到，反应后得到甲缩醛和甲醇及水的混合物。

Synthesis of 4 - ( N , N-Dimethylamino ) butanal Diethyl Acetal by Grignard Reaction

格氏反应合成4-（N，N-二甲胺基）丁醛缩二乙醇

The preparation of a polyvinyl acetal by the reaction of polyvinyl alcohol with vanillin is reported . The acetalization is accomplished in a solvent of DMSO with p-toluene sulfonic acid or sulfuric acid as catalysts . The degree of acetalization may attain to 55 % .

以DMSO为溶剂、对甲苯磺酸或浓硫酸作催化剂，由聚乙烯醇和香草醛制备了聚乙烯醇缩香草醛，其缩醛度可达55%。