甲缩醛

The tower structure is especially applicable to the process of methylal synthesis.

与传统塔型比较，该结构简单、催化剂易装卸，催化剂利用率高，易于建立催化精馏过程的模型和模拟放大，特别适用于甲缩醛合成催化精馏过程。

In this paper, methylal and diethoxymethane were used as end capping agents to improve the thermal stability of the product in molten copolymerization of trioxane with ethylene oxide or with dioxolane.

为此研究了在三聚甲醛与环氧乙烷或三聚甲醛与二氧五环熔融共聚体系中，通过封端剂甲缩醛或二乙氧基甲烷的使用，对热碱稳定的共聚甲醛的收率提高了3％左右。

Is located in the National Health City, National Garden City,"China's first long" hometown - Puyang, located in Puyang City, South County, Technology and Industry for the region is a professional Health and formaldehyde, methylal new series of products, one of the major manufacturers.

濮阳市南乐县森威化工有限公司位于国家卫生城、国家园林城、"中华第一龙"的故乡—濮阳，坐落在濮阳市南乐县技术工业区内，是国内专业生甲醛、新型甲缩醛等系列产品的主要生产厂家之一。

A continuous detecting temperature procedure was used to measure the apparent kinetics data of methylal synthesis reaction inside the original catalyst particle with various diameters.

采用连续测温法，测定不同粒径颗粒催化剂上甲缩醛合成反应的宏观动力学数据，估计了各组份的有效扩散系数，以用于催化剂有效因子的计算。

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.

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 possibility of preparation of methylal from methanol and formaldehyde through slurry catalytic distillation catalyzed by acidic cation exchange resin with large size pores is discussed.

研究了以甲醇和甲醛为原料，以大孔径强酸性阳离子交换树脂为催化剂，通过浆料催化精馏工艺制备甲缩醛的可行性。

The company is committed to the wholesale, retail chemical products, including: industrial toluene, xylene, white oil methanol, ethyl, n-butyl, C ketone, butanone, anti-Whitewater, cyclohexanone, etc. methylal more than 40 kinds of products, the average monthly sales volume over 4000 tons.

本公司主要致力于批发，零售化工产品，包括：工业用甲苯，二甲苯，白电油甲醇，乙酯，丁酯，丙酮，丁酮，防白水，环已酮，甲缩醛等40多种产品，平均月销量达4000多吨。

The invention discloses a method for synthesizing acetyl tributyl citrate, which uses tributyl citrate and acetic anhydride as reaction articles, uses naphthalenesulfonic acid methylal as the catalyst during the ester synthesis process, filtering the catalyst from reacted articles after reaction, water-washing, alkaline-washing, distilling the filtrate to obatin acetyl tributyl citrate.

本发明公开了一种合成乙酰柠檬酸三丁酯的方法，它以柠檬酸三丁酯、乙酸酐为反应物，在酯合成过程中用萘磺酸甲缩醛作催化剂，反应结束后，将催化剂从反应后的物料中过滤出来，滤液经水洗、碱洗、蒸馏获得乙酰柠檬酸三丁酯。

METHODS: Mono-6-O-tosyl-β-CD and mono-6-formyl-β-CD were synthesized separately. Silylatedβ-CD was loaded onto polymer chain of PVA by acetalization to produce PVA containingβ-CD linear high polymer.

分别合成单6-对甲基苯磺酰β-环糊精酯和单6-甲酰基β-环糊精，利用缩醛化反应将醛基化β-环糊精固载到聚乙烯醇大分子链上，合成出聚乙烯醇固载β-环糊精的线性环糊精高分子。

His paper investigated the improvement of spray characteristics and exhaust emissions of diesel engines by reformulating the fuel compounds and physico-chemical parameters.

选择了几种典型的含氧燃料—乙醇、碳酸二甲脂、甲缩醛，测量和分析了它们以不同比例与柴油互溶后燃料的输运参数变化。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。