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- phthalic anhydride catalyst 苯酐催化剂
- Cetyl phthalate was prepared from phthalic anhydride and cetyl alcohol as raw materials catalyzed by non-acid catalyst. 以苯酐与十六醇为原料,选用非酸催化剂,在实验室合成了增塑剂邻苯二甲酸双十六烷基酯。
- The research, development situation and technology keys of the catalyst for preparing phthalic anhydride by oxidation of o -xylene were introduced. 介绍了邻二甲苯氧化法制苯酐用催化剂的研究情况、发展概况和开发过程中的技术关键。
- Synthesis of BLP was studied by using PEG 400 as catalyst and phthalic anhydride, butyl alcohol and lauryl alcohol as reactants. 研究了以聚乙二醇400（PEG－400）为催化剂，以邻苯二甲酸酐、正丁醇、月桂醇为原料合成邻苯二甲酸丁基月桂酯（BLP）的试验过程。
- By means of innovation for heat treatment system of phthalic anhydride plant, the costs of production were reduced enormously in the prophase and metaphase of catalyst use. 通过对苯酐装置热处理系统的改造,在催化剂使用的前期、中期大大降低生产成本。
- After dehydration and distillation,the fusel oil is reacted with phthalic anhydride to synthesis phthalic mixed ester by strong acidic canon ion excharge resin as catalyst. 以糖厂、酒精厂副产物杂醇油为原料醇，经脱水及简单蒸馏后，在强酸树脂的催化作用下与邻苯二甲酸酐反应，合成了外观为浅黄色透明的邻苯二甲酸混合酯。
- It is shown that the catalyst SO 2-_4/Zr-HMS possesses the structure of HMS and with the acid strength by -13.75(H_0). The catalytic activity of SO 2-_4/Zr-HMS in the esterification of phthalic anhydride with butanol is higher than that of SO 2-_4/ZrO_2. 结果表明 ;经过一系列处理后制得的 SO2 -4 / Zr-HMS催化剂具备 HMS中孔分子筛的结构特征 ;其酸强度可达 H0 =-1 3 .;75
- Tetrachlorophthalic anhydride was synthesized with phthalic anhydride as raw material, compounded iodine as catalyst by direct separation of crystal from solvent on the basis of solvent method. 在溶剂法基础上,以苯酐为原料,复合碘作催化剂,产品直接结晶分离的方法合成四氯邻苯二甲酸酐。
- Exothermic reaction can be reduced by adding hexahydrophthalic anhydride to the phthalic anhydride. 用六氢化邻苯二酸酐加入到邻苯二酸酐中,可使其放热反应减慢。
- Process for synthesizing dimethyl phthalate(DMP) for phthalic anhydride and methanol has developed. 研究以苯酐、甲醇为原料合成邻苯二甲酸二甲酯的方法。
- EBE monitored control system is an assistant to operator of 2000 TPY phthalic anhydride plant. EBE监视系统是 2 0 0 0t/a苯酐装置操作人员的有力助手
- The reaction adopted strong-acid cation exchange resin catalysed phthalic anhydride and butyl alcohol. 采用强酸性阳离子交换树脂催化邻苯二甲酸酐与正丁醇的酯化反应。
- Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23. 以氯苯和邻苯二甲酸酐为起始原料，经四步工序合成马吲哚，总收率为23．4%25。
- Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23.4%. 以氯苯和邻苯二甲酸酐为起始原料，经四步工序合成马吲哚，总收率为23．4%25。
- A widely used durable synthetic resin derived from glycerol and phthalic anhydride. 醇酸树脂从丙三醇和酞酸酐中提炼出的一种应用范围很广的耐用合成树脂
- The flow sheet and operation in phthalic anhydride plant system after the adding partial condensator were introduced. 介绍了苯酐装置系统中增加部分冷凝器的流程,操作讨论了加部分凝冷器前后的经济效益。
- Alkyd resins were prepared from maleopimaric acid(MPA)which consists of maleic and rosin instead of phthalic anhydride. 采用松香和顺酐反应合成的马来海松酸(MPA)代替苯酐制备醇酸树脂涂料。
- Objective: To study the effects of Phthalic Anhydride on the worker's health Methods: Present survey. 目的：研究邻苯二甲酸酐对工人健康的影响。方法：现况调查。
- Any of a group of chemical compounds formed by a reaction of phthalic anhydride with a phenol,from which certain synthetic dyes are derived. 酞一组化合物之一，由邻苯二甲酸酐和酚反应而成，某些合成染料是由此提取的
- Any of a group of chemical compounds formed by a reaction of phthalic anhydride with a phenol, from which certain synthetic dyes are derived. 酞一组化合物之一，由邻苯二甲酸酐和酚反应而成，某些合成染料是由此提取的
