Study on new synthesis of metaldehyde;
四聚乙醛合成新工艺的研究
The yield of metaldehyde could reach 8%~15%.
介绍了用盐酸复合催化剂由乙醛合成四聚乙醛的生产工艺,该工艺反应在-15～5℃下进行,温度升降平稳,易于控制,四聚乙醛得率8%～15%。
Metaldehyde(Ⅰ)is obtained in relatively high yields(15%～20%) by polymerizing with acetaldehyde(Ⅱ) in the presence of compound hydrochloric acid catalyst and under temperature between -15?℃ and 15?℃.
本研究使用盐酸复合催化剂合成四聚乙醛 (Ⅰ )的方法。
Polymerization of acetaldehyde to paraldehyde;
乙醛合成三聚乙醛反应规律的研究
The method to improve the thermal stability of metaldehyde product and the recovery of acetaldehyde from the main by-product paraldehyde were discussed.
讨论了主要副产物三聚乙醛解聚回收乙醛的生产工艺及四聚乙醛产品热稳定性处理方法。
Diisobutyl acetal was synthesized by the condensation of paraldehyde and iso-butyl al- cohol.
以三聚乙醛和异丁醇为原料，合成了二异丁基乙缩醛。
Synthesis of Ethyl Acetate Ane Metaldehyde and N-(α-Hydroxyethyl) Formamide with Acetaldehyde from the Industry Waste Liquid;
工业废液中提取乙醛合成乙酸乙酯及四聚乙醛和N-（α-羟基乙叉基）甲酰胺
Research and Development of POM/PTFE Alloy
聚甲醛与聚四氟乙烯高分子合金的研究与开发
polyvinyl acetal resin
聚乙烯醇缩乙醛树脂
polyvinyl formal wire
聚乙烯醇缩甲醛绝缘线
testing methods for polyvinyl butyral
聚乙烯缩丁醛试验方法
pelyvinyl formal fibre
聚乙烯醇缩甲醛纤维
metaldehyde tablets or sticks for use as fuel
聚乙醛片或棒,用作燃料
polyvinyl butyral cementing agent
聚乙烯醇缩丁醛粘合剂
a polymer of vinyl formaldehyde.
一种甲醛乙烯的聚合物。
Synthesis of Poly Glyoxapentaerythritol Acetal Catalyzed by Tungstemolybdenumic Acid Supported on Silica Gel
硅胶负载钨钼杂多酸催化合成聚缩季戊四醇乙二醛
Ethylene-tetrafluoroethylene ETFE
乙烯-四氟乙烯共聚物
A colorless liquid polymer, C6H12O3, of acetaldehyde, used as a solvent and a sedative.
仲（乙）醛，三聚乙醛一种用作溶剂和镇定剂的无色液体聚合物，C6H12O3
Causes and prevention of polymerization of acetaldehyde in rectifying tower in vinyl acetate plant
醋酸乙烯装置乙醛精馏塔中乙醛聚合原因分析及改造措施
Study on Application of Crotonaldehyde in Adhesives of Poly (Vinyl Acetals);
丁烯醛在聚乙烯醇缩醛胶方面的应用研究
Study on the Factors Affecting Free Formaldehyde in Poly(Vinyl formal) Resin
聚乙烯醇缩醛树脂中残留甲醛含量的影响因素
POLYVINYL ACETAL PAINTS AND AD HESIVES-CALCULATION OF ALDEH YDE AMOUNT AND DETERMINATION OF ACETAL LEVEL
聚乙烯醇缩醛类涂料、粘合剂生产中醛用量的计算及缩醛度的测定
polyvinyl formal high strength wire coating
聚乙烯醇缩甲醛高强度漆包线漆
straw green epoxy polyvinyl butyral enamel
草绿环氧聚乙烯醇丁缩醛磁漆
