对苯二胺

The internal and external development of p -aromatic polyamide fiber , particularly poly ( p -phenylene tereph-thalamide) fiber, was introduced from the aspects of fiber varieties, output, properties and advanced composite materials reinforced with this fiber.

介绍了对位芳香族聚酰胺纤维特别是聚对苯二甲酰对苯二胺纤维的国内外发展情况，包括纤维品种、产量、性能和该类纤维作为先进复合材料骨架的发展情况。

Rate constants of carbon dioxide radical anion〓 reacting with 5,5dimethyl-1-pyrroline-N-oxide、1-naphthoquinone and N,N,N,N-tetramethyl 1,4 -phenylene diamine were determined by detecting the changes of radical concentrations with time, and they were 5.5×10〓mol〓Ls〓、4.5×10〓mol〓Ls〓 and 6.7×10〓nol〓Ls〓 respectively.

测定了在含〓的CdS胶体体系中〓与5，5-二甲基-1-吡咯氮氧化物、1-萘醌和N，N，N，N-四甲基对苯二胺正离子自由基反应的速率常数，它们分别为5.5×10〓mol〓Ls〓、4.5×l0〓mol〓Ls〓和6.7×10〓mol〓Ls〓。

Soluble PANt (=0. 49dl/g) in NMP was used tocopolymerize with -COCI terminated low molecular weight poly- to - phenylene terephathalamide. Through elemental analysis the molecular wd...

我们还用聚苯胺（［η］＝0.49dl／g）与－COCI封端的果对苯二甲酰对苯二胺进行嵌段共聚，经过产物的元素分析与计算结果比较，确定出特性黏数为0.49dl／g的聚苯胺平均分子量。

Aramid fiber-wide known as "poly p-phenylene terephthalamide of p-phenylenediamine", the English called Aramid fiber is a new type of high-tech synthetic fiber, with ultra-high strength, high modulus and high temperature, acid-alkali resistance, light weight excellent performance, the strength of steel wire 5-6 times the modulus for the steel wire or glass fiber 2-3 times, toughness is the wire 2 times the weight of the public for the steel wire 1 / 5 of about 560 degrees in the high temperature does not decompose, does not melt.

芳纶纤维全称为"聚对苯二甲酰对苯二胺"，英文名为Aramid fiber 是一种新型高科技合成纤维，具有超高强度、高模量和耐高温、耐酸耐碱、重量轻等优良性能，其强度钢丝的5-6倍，模量为钢丝或玻璃纤维的2-3倍，韧性是钢丝的2倍，而重量公为钢丝的1/5左右，在560度的高温下，不分解，不融化。

RT base(4-aminodiphenylamine),as an important dyestuff intermediate and raw material for 1,4-diaminobenzene antiager, has been widely applied to rubber auxiliary, dye and pharmacy industry.

中文摘要： RT培司，化学名称4―氨基二苯胺，是一种染料中间体，也是生产对苯二胺类防老剂的重要原料，在橡胶助剂、染料、制药等行业得到广泛应用。

A novel epoxy resin was obtained through the condensation reaction of the azomethine and epichlorohydrin in NaOH solution.

通过对羟基苯甲醛双缩对苯二胺席夫碱与环氧氯丙烷在NaOH液中缩合，合成一种新型环氧树脂。

"Half-water-hydrolysis"method is used to modify the preaminolysis of phenylenediamine in"step coupling polymerization". First, dehydrochlorination polycondensation between Si-OH and Si-Cl group during polycondensation reaction is employed instead of dehydration reaction between Si-OH groups before, which avoids the disconnection of Si-N bond destreyed by isolated water and improves the H-bonding template effect of the bridged-phenylenediamine.

探索用&半水水解-脱氯化氢缩聚&法对我组过去提出的&全水水解法&的预胺解法加以改进，经&半水水解&得到的含硅羟基和硅氯基的单体再以脱氯化氢代替脱水的方法减少了极性溶剂存在下游离水断裂梯撑模板的硅-氮键的可能性，有效地提高了对苯二胺梯撑中氢键的模板作用。

Preliminary experiments show that the rate of condensation of sulfanilic acid with 4-[4-(4-Ni-tro-2-sulfostyryl)-3-sulfophenyl-azo]-3-methyl-1-phenyl-5-pyrazolol is slower than those of p-phenylene diamine a...

对氨基苯磺酸和4-[4-(4-硝基-2磺基苯乙烯)-3-磺基苯偶氮]-1-苯-3-甲-5-羟吡唑在稀的氢氧化钠溶液中缩合的速度，较对苯二胺及对氨基苯甲酸为慢。

In the sensitive and simple method, the p-phenylenediamine dihydrochloride was oxided to diazotized products with the reaction of NaNO2 in H2SO4 medium.

色氨酸与重氮化的对苯二胺二盐酸盐在硫酸介质中生成粉红色化合物，该化合物最大吸光值为522nm；摩尔吸光系数为0.89×104L/mol·cm；偶合产物至少稳定存在1h；色氨酸浓度在0.30～12μg/ml范围内遵循朗伯比尔定律。

Kinetics of hydroxyl-terminated polybutadiene/ phenyl isocyanate, bonding agent (BA-5)/PI and antioxidant H/PI were studied in toluene/dimethyl sulphoxide solution. The rate constants and the activation parameters were calculated. The results show that the reactionary rate of these three active hydrogen components decreased in same condition.

分别对端羟基聚丁二烯/苯异氰酸酯，键合剂(BA-5)/PI和防老剂H（N，N'-二苯基对苯二胺）／PI在甲苯／二甲基亚砜混合溶液体系中进行了反应动力学研究，计算了相应体系的反应速率和活化能。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。