缩醛化度可由乙醇的浓度来控制。
The degree of acetalation can be controlled by the concentration of alcohol.
目的改进4-氯丁醛缩醛的合成方法。
OBJECTIVE To synthesize 4-chlorobutanal acetal by improved method.
探讨了聚乙烯醇缩醛的粘接强度的影响。
The effect of polyvinyl acetals on its adhesive strength was investigated.
并在此条件下合成了多种环缩醛，收率62。
紫外被稳定的缩醛均聚物，黑色，中等黏度。
在最佳条件下，合成了八个缩醛(酮)化合物。
Eight acetals (Ketals) were synthesized under the optimal conditions.
本文介绍了缩醛化原理及最佳工艺条件的选择。
This article introduces the principle of acetalation and the selection of the optimal technological condition.
本发明还公开包含本文所述的聚缩醛组合物的制品。
Also disclosed are articles of manufacture comprising the polyacetal compositions described herein.
用相转移催化合成了柠檬醛二乙缩醛，提高了产率。
Phase transfer catalyst was used for synthesis of citral diethyl acetal, the yield has increased.
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.
在此反应条件下，丁醛乙二醇缩醛的收率可达71.1%。
Under these conditions, the yield of butyraldehyde glycol acetal is 71.1%.
以离子液体为介质研究了三氯化铟催化的缩醛与缩酮反应。
Acetalization and ketalization reactions catalyzed by indium trichloride using various ionic liquids as media have been investigated in detail.
甲缩醛为无色澄清易挥发可燃液体，有氯仿气味和刺激味。
Methylal is clear colorless volatile flammable liquid, chloroform and pungent odor.
取代苯酚的甲缩醛磷酸盐麻醉镇静药用化合物及制备方法。
The invention discloses a substituted phenol for methylal phosphate anesthetic and sedative drugs and a preparation method thereof.
不过要知道，固体中和平衡时溶液中的单糖是以开链型环状半缩醛占多数。
However, it must be understood that cyclic hemiacetals of those open-chain forms prevail I solids and at equilibrium in solutions.
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.
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.
另外还合成了必需原料2-（2-甲氧基乙氧基）乙醛二乙醇缩醛。
The necessary material of 2-(2-methoethyl) acetaldehyde diethyl acetal was synthesized in addition.
在酸性催化剂下，由葡萄糖和乙二醇经缩醛化反应制备了乙二醇葡糖苷。
Glycol glucoside was prepared from glucose and ethylene glycol in the presence of acid catalyst.
作者发现，在反应中加入适量乙醛代替部分甲醛、可明显提高缩醛胶的性能。
The authors find that the addition of appropriate amount of acetaldehyde to replace a part of formaldehyde distinctly improves the properties of the acetal adhesive.
研究了硫酸铜催化缩醛（酮）的合成条件，考察了硫酸铜催化剂的使用性能；
The synthetic conditions of acetals and ketals catalyzed by copper sulfate were studied.
通过一元羧酸和二乙烯基醚的反应，我们得到了一种新颖的酯缩醛结构分子玻璃。
A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.
实验结果表明：以磷酸钙为主体的催化剂对缩醛裂解反应具有较高的活性和选择性。
The results showed that the catalyst, with calcium phosphate as the main part, is active and selective in the splitting of acetal.
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.
这些化合物能溶于水，并含有游离的半缩醛羟基，所以在碱溶液中能还原银离子和铜离子。
These compounds are soluble in water, and contains the hemiacetal hydroxyl free, so in alkaline solution can reduce silver ions and copper ions.
考察了制备方法、焙烧温度和成型助剂对甲缩醛氧化制甲醛铁钼钴三元催化剂活性的影响。
The influences of preparation method, the calcined temperature and auxiliary forming reagent on the activity of the Fe Mo Co o catalyst for oxidation of methylal to formaldehyde were studied.
催化精馏制备甲缩醛工艺目前国内尚未形成大规模工业化生产，具有一定的开发应用价值。
Catalytic rectification preparation armour acetals technology at present domestic has not been formed mass industrial production, have certain development application value.
将碳纤维织物浸渍-涂层酚醛-缩醛粘结剂树脂，加压固化后制备出碳纤维织物复合材料。
The carbon fabric composites were prepared by dip-coating of the carbon fabric in a phenolic resin and solidified under pressure.
将碳纤维织物浸渍-涂层酚醛-缩醛粘结剂树脂，加压固化后制备出碳纤维织物复合材料。
The carbon fabric composites were prepared by dip-coating of the carbon fabric in a phenolic resin and solidified under pressure.
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