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紫外被稳定的缩醛均聚物，黑色，中等黏度。UV Stabilized Acetal Homopolymer, Black, Medium Viscosity.

在所有的热塑性塑料中，乙缩醛具有最高的强度和硬度。Acetal is among the strongest and stiffest of all thermoplastics.

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目的改进4-氯丁醛缩醛的合成方法。OBJECTIVE To synthesize 4-chlorobutanal acetal by improved method.

苯酚、二甲苯缩甲醛树脂及硼酸反应生成缩醛树脂。The reaction of phenol, xylene—formaldehyde resin with boric acid gets an acetal resin.

以三聚乙醛和异丁醇为原料，合成了二异丁基乙缩醛。Diisobutyl acetal was synthesized by the condensation of paraldehyde and iso-butyl alcohol.

加工包含1，1，2，2-四甲氧基乙烷和乙二醛二甲缩醛的组合物的方法。Method for processing compositions containing 1,1,2,2-tetramethoxyethane and glyoxal dimethyl acetal.

以单质碘为催化剂，通过丁醛和乙二醇反应合成了丁醛乙二醇缩醛。Butyraldehyde glycol acetal was synthesized from butyraldehyde and glycol by using iodine as catalyst.

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研究了以硫酸氢钠为催化剂，庚醛和乙醇为原料来制备庚醛二乙缩醛。The enanthal diethyl acetal is synthesized catalyzed by sodium bisulfate , with heptaldehyde and ethanol as raw materials.

采用醋酸乙烯酯和乙醛为原料，合成了高效甲醛阻聚剂———聚乙烯醇缩乙醛。A kind of highly effective formaldehyde inhibitor, polyvinyl acetal was prepared from acetic acid, ethylene and acetaldehyde.

本文研究了在离子交换树脂存在下，由糠醛和乙二醇反应制备糠醛缩乙二醇的工艺条件。The synthesis of furfural glycol acetal from furfural and ethylene glycol in the presence of ion exchange resin was investigated.

公司发展简史和共聚甲醛的标准品级以及特殊品级。The Paper introduces the brief developing history of Hoechst Celanese Corp. and its standard & specialty grades of acetal copolymer.

以柠檬醛和1，2-丙二醇为原料，甲基磺酸铜为催化剂，合成了柠檬醛缩1，2-丙二醇。Citral 1,2-propanediol acetal was synthesized using citral and 1,2-propanediol as raw materials and copper methanesulfonate as catalyst.

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本发明涉及各种芳香二酸酯缩醛聚合物及其合成方法。The invention relates to various aromatic diacid ester acetal polymers and a synthesis method of the aromatic diacid ester acetal polymers.

并对作为增韧剂和增粘剂的聚乙烯醇缩醛的缩醛结构对其热稳定性的影响进行了分析。And we also study the acetal structure and its influence of thermal stability of polyvinyl acetal which was used as toughening agent and tackifier.

以环己酮和乙二醇为原料，漆酚缩甲醛钕聚合物为催化剂合成了环己酮乙二醇缩酮。The promotion action of ionic liquid as an accelerant in synthesizing benzaldehyde ethanediol acetal and benzaldehyde propanediol acetal was studied.

以浓硫酸改性煤基活性炭为催化剂，以苯甲醛和乙二醇为原料合成苯甲醛乙二醇缩醛的反应条件进行了研究。Using concentrated H_2SO_4 modified coal based activated carbon as catalyst, benzylaldehyde glycol acetal was synthesized from benzylaldehyde and glycol.

以单质碘为催化剂，通过丁醛和1，2丙二醇反应合成了丁醛1，2丙二醇缩醛。The butyraldehyde 1,2-propanediol acetal is synthesized from the acetalization reaction of butyraldehyde and 1,2-propanediol, and used iodine as catalysis.

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介绍了磷钼酸在乙二醇和庚醛缩合反应中的应用，探讨了乙二醇缩庚醛的合成条件。This paper reports the using of molybdophosphoric acid in synthesizing heptyl aldehyde ethylene acetal and meanwhile probes into the synthesizing conditions.

用无水硫酸铜作催化剂，在微波辐射下催化合成苯甲醛乙二醇缩醛。Benzaldehyde ethylene glycol acetal was directly synthesized from benzaldehyde and ethylene glycol under microwave irradiation with cupric sulfate as catalyst.

方法以4-羟基-6-甲基-2-吡喃酮、N，N-二甲基甲酰胺二甲氧基缩醛为起始原料，经两步反应制得目标化合物。Methods The target compound was synthesized by two steps with 4-hydroxy-6-methyl-2-pyrone and N, N-dimethylformamide dimethyl acetal as the starting materials.