异己二醇合成中试研究

在异己二醇中试试验中,采用均匀设计安排中试试验,验证放大准则,确定放大参数,考查了反应温度、反应压力、催化剂用量等工艺条件的操作稳定性,取得了较好的试验结果,使异己二醇的生产收率可以稳定在90%以上。这证明高压催化加氢合成异己二醇工艺可行,其适宜的工艺条件反应温度为130℃,压力1.5MPa,搅拌转速410r/min,催化剂用量3%。

异己二醇合成中试研究

异己二醇是用途广泛的精细化工产品，在国外已应用于生化工程、建材、农药、涂料、纺织品，用作新型溶剂、偶合剂、乳化剂、稳定剂。它的使用可以使产品质量提升一个等级，国外仅发达国家美国、日本几个少数国家垄断生产技术，异己二醇中试研究成功打破了国外的垄断技术，为纺织、农药、涂料、香料等产品的质量提升有了技术和物质基础。本生产技术是以双丙酮醇为原料，利用高压、

异己二醇合成中试研究

异己二醇是用途广泛的精细化工产品，在国外已应用于生化工程、建材、农药、涂料、纺织品，用作新型溶剂、偶合剂、乳化剂、稳定剂．它的使用可以使产品质量提升一个等级，国外仅发达国家美国、日本几个少数国家垄断生产技术，异己二醇中试研究成功打破了国外的垄断技术，为纺织、农药、涂料、香料等产品的质量提升有了技术和物质基础。若年产500T／a规模生产MPD厂．按售价每吨2．8万元，直接经济效益500万元／年。

异己二醇合成中试研究

内容简介 异己二醇是用途广泛的精细化工产品，在国外已应用于生化工程、建材、农药、涂料、纺织品，用作新型溶剂、偶合剂、乳化剂、稳定剂。它的使用可以使产品质量提升一个等级，国外仅发达国家美国、日本几个少数国家垄断生产技术，异己二醇中试研究成功打破了国外的垄断技术，为纺织、农药、涂料、香料等产品的质量提升有了技术和物质基础。

Research on characterization of thermotropic polyurethane membrane of PDAG/BDO/MDI

Adopting Poly（ethylene glycol） adipate Dilpoly- （ethylene glycol）] adipate polydiglycol adipate glycol （PDAG）, 1,4-butanediol （BDO）, hydroxy silicone oil, methylene diphenyl diisocyanate （MDI） as the raw material, a new polyurethane elastic body can be made through prepolymerization. After measurement of the moisture permeability, adsorption quantity and mechanical properties of the membrane made with the elastic body, we also proofed its formula by infrared spectroscopy. The result showed that the moisture permeability of the membrane, with a certain intelligent thermotropic quality, will increase by 3 to 4 times when the temperature is between 25℃-45℃.

Heterogeneous synthesis of dimethylhexane-1,6-dicarbamate from 1,6-hexanediamine and methyl carbonate in methanol over a CeO_2 catalyst

The efficient synthesis of dimethylhexane-1,6-dicarbamate(HDC)from 1,6-hexanediamine(HDA)and methyl carbonate over a series of heterogeneous catalysts(e.g.,Mg O,Fe2O3,Mo2O3,and Ce O2)was investigated.The reaction pathway was confirmed as an alcoholysis reaction through a series of designed experiments.Under optimized conditions,100%HDA conversion with 83.1%HDCtotaland 16.9%polyurea was obtained using a onestep with high temperature procedure with Ce O2as the catalyst.A new two-step with variable temperature technology was developed based on the reaction pathway to reduce the polyurea yield.Using the proposed method,the HDCtotalyield reached 95.2%,whereas the polyurea yield decreased to 4.8%.The Ce O2catalyst showed high stability and did not exhibit any observable decrease in the HDC yield or any structural changes after four recycling periods.

技术金桥

N，N’-间本撑马来酰亚胺；球型钝化精细镁粉；异己二醇中间试验研究；2，4，6-兰碘-5-氨基间苯二甲酸；高纯锑关键技术及新产品研究开发；钙稳定二氧化锆及其电熔生产方法。