聚甲醛

The results showed that the optimum preparation conditions of moulding materials were as follows: moler ratio of melamine to formaldehyde 1:2.5, water turbidity of the reaction end point 1:3, content of cellulose 42%~48%, fineness of moulding powder 100~120 mesh.

结果表明，三聚氰胺与甲醛物质的量比为1：2.5、终点控制在水浊度1：3，纤维素用量42%~48%，干燥温度70℃，球磨至100~120目时，制得的模塑料性能良好，符合国家日用级产品相关标准。

Naphthalene monosulfonic acid,which wos synthesized through dripping concentrated sulfate acid into naphthalene,was turned into polyby reacting with forma|dehyde.

浓硫酸滴加到萘中生成β-萘磺酸，在甲醛的作用下合成出聚萘磺酸盐，并对它们的结构性能和作用机理进行了研究。

The p-tert-butyl calix arene (n=4,6,8) were synthesized by p-tert-butyl phenol, formaldehyde aqueous solution as raw materials. Six kinds of calixarene oligomeric surfactants were prepared by etherification of the calix arene with 1,3-propane sultone and 1,4-butane sultone.

以对叔丁基苯酚、甲醛为主要原料合成杯芳烃母体对叔丁基杯芳烃(n=4，6，8)；以1，3-丙烷磺内酯、1，4-丁烷磺内酯为醚化试剂，经Williamson醚化反应，合成出6种杯芳烃基低聚表面活性剂。

Microcapsules loaded with tetradecane as the core material are prepared by in-situ polymerization methods.

研究采用了以三聚氰胺-甲醛为壁材，正十四烷为芯材原位聚合法制备微胶囊相变材料。

From solution polymerization, polymers are tokened using MALDI-TOF-MSand IR spectrum. The structure of polymers are confirmed and obtain 2-28 repeatunits of poly(p-aminobenzaldehyde). The tip of polymer molecule still have one-NH_2 and one -CHO. To a certainty condtion, this polymer can polymerization tocreat even more molecular weight.

对溶液聚合得到的聚合物进行了飞行时间质谱和红外光谱表征，确定了聚合物分子的结构，测得了聚对氨基苯甲醛的2-28个重复单元，且聚合物分子末端还保留有一个-NH_2和一个-CHO，在一定条件下可以进一步缩合生成更高分子量的聚合物。

AB, ABS emulsion ,uric acid resin, phenolic aldehyde resin, urea-formaldehyd e resin, formaldehyde resin, polythene, poly-chloroprene and etc.

塑料树脂 AB、 ABS乳液、尿醛树脂、酚醛树脂、密胶甲醛树脂、聚乙烯、聚氟乙烯等。

The addition reaction with alkaline catalyst was used for the preparation of urea-formaldehyde prepolymer of rose perfume microcapsule.

以脲醛树脂为囊壁的玫瑰香精微胶囊，其囊壁原料脲-甲醛预聚体的制备，采用了碱催化下的加成反应工艺。

A type of novel non-ionic Gemini surfactant was synthesized from dimer which was obtained from nonyl-phenyl and formaldehyde.

以壬基酚和甲醛的二聚体为原料，合成了一种新型结构的非离子双子表面活性剂，总收率为20%。

It is made generally with mixed salt of triethanolamine and ammonium hydroxide, twelve-acid isopropyl alcohol amides, for malde-hyde, polyvinyl chloride, wool oil, spice, pigment and water as raw materials.

一般采用硫酸脂肪醇的乙三醇胺与氢氧化胺的混合盐、十二酸异丙醇酰胺、甲醛、聚氧乙烯、羊毛脂、香料、色料和水作为原料。

Effects of preparation technology of urea-formaldehyde resin modified with melamineon property of plywood were studied.

采用三聚氰胺对脲醛树脂进行改性，探讨了改性脲醛树脂的合成工艺对性能的影响。结果表明：当甲醛与尿素的最终摩尔比达到 1。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。