Status and Development of Long Chain Dibasic Acid

A new process was recommended of drying calcium phosphate dibasic with a modified Pneumatic conveying dryer to dry the powder materials being easy to lumo.

论述了改进单级气流干燥器以干燥磷酸氢钙的新方法，解决了易粘结物料不便干燥的问题。

Design and Production of 30 kt/ a Feed Grade Calcium Phosphate Dibasic with Two-stage

30kt/a两段中和沉淀法饲钙装置的设计与生产

A new triazene compound is synthesized by nitrogen coupling reaction of the diazonium salt.

通过重氮盐的氮偶联反应，合成三氮烯类新试剂。

Research into the kinetics of photochemical hydrolysis of diazonium salt by QMS method

四极质谱法研究重氮盐光致水解动力学

The Study on Effects of Performance of Diazonium Salt Microcapsules

影响重氮盐微胶囊颗粒性能的因素研究

Methods: Nitrogen coupling reaction of the diazonium salt was applied.

方法：通过重氮盐的氮偶联反应。

Exploration and Experience of Semimicro Experiment on the Diazonium Salt Synthesis& Its Coupling Reaction

半微量重氮盐制备及偶合反应实验研究和体会

Reduction of diazonium salt: 70& 75 ℃, 3 h, 92.5% ( two steps);

重氮盐还原：70~75℃，3h，（两步收率）92.5%；

A method of lamination technology to produce complex material insulating cover suitable for high speed diazo printer is reported, by using nonbasic gloss fibre cloth and unsaturated resin.

报导了采用层敷工艺，使用无碱玻璃纤维布和不饱和树脂研制适于高速晒图机使用的复合材料绝缘机罩的方法。

A method of machining to produce the big bore diameter PTFE sifter of the parts for high speed diazo printer was reported, by using polymer PTFE material.

报道了采用新型高分子材料聚四氟乙烯车削板为原料，机械加工生产高速晒图机的重要部件&大孔径聚四氟乙烯筛板的方法。

National Standard GB/ T 13984-92 "Microphotography Technique-Standard for Visual Density of Diazo and Vesicular Films" clearly defined the values of visual density for diazo print films.

国家标准GB／T13984-92《缩微摄影技术-重氮和微泡胶片视觉密度规范》对重氮拷贝片的视觉密度值做了明确的规定。

N this paper, two unblocking courses of the ether blocked-couplers in negative diazo type film have been studied by GC/ MS analysis.

本文通过GC／MS谱分析研究了重氮负性胶片中醚类封闭偶合剂的解封历程。

A research into hi-speed hi-contrast graphic arts light room duplicating film Technical Principle of Dual Positive-Negative Diazo Duplicating Film

高感高反差印刷制版明室拷贝片的研究异同像混用重氮复制胶片的技术原理

Density Control for Diazo Print Film

重氮拷贝片的密度控制

Technical Principle of Dual Positive-Negative Diazo Duplicating Film

异同像混用重氮复制胶片的技术原理

The influence of the main components of diazo film, such as couplers, diazonium compounds and binders, on the color of the dye image was studied.

本文探讨了重氮片的主要组份&偶合剂、重氮化合物和成膜剂对重氮片颜色的影响。

Some factors affecting the image color of diazo film

影响重氮片影像颜色的因素

Among three possible isomers of the diazo dye, the one with substitution of two β-hydro atoms of naphthalene ring was predicted to be the most possible isomer by analyzing the calculation results.

通过分析计算结果，预测在可能形成的三个双偶氮染料同分异构体中，萘环上两个β氢被取代的双偶氮染料是最可能的生成的异构体。

Diazo dye were prepared by the diazo coupling reactions of aniline and 7-acetamide-4-hydroxy-2-naphthalene-β-( N, N-dimethylaminoethyl) sulfonamide.

通过苯胺与7-乙酰氨基-4-羟基-2-萘-β-（N，N-二甲基氨乙基）磺酰胺的重氮化偶合反应合成了双偶氮染料。

Photosensitive complexes of phenolic resin and diazo resin or diazonium salt

酚醛树脂重氮树脂或重氮盐的感光性复合物