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- diphenylmethane diisocyanat 4,4’-二苯基甲烷二异氰酸酯
- Diphenylmethane would have a two proton peak. 二苯甲烷必定有一个二质子的峰。
- Diphenylmethane diisocyanates (MDI) is an important material used for manufacturing polyurethanes. 摘要二苯甲烷二异氰酸酯(MDI)是重要的聚氨酯原料,市场需求量很大。
- Bis(trichloromethyl) carbonate as the phosgene substitute in the preparation of 4, 4'- diphenylmethane diisocyanate is introduced. 研究了用二(三氯甲基)碳酸酯代替传统的光气进行羰基化反应合成二苯甲烷-4,4’-二异氰酸酯的反应。
- Diphenylmethane (DPM) is a useful chemical material in spice production and an important intermediate in drug and organic synthesis. 二苯基甲烷,通常用于香料工业,同时又是生产染料、医药的重要中间体。
- Using NH?4VO?3 as catalyst and diethyl ether as solvent,benzophenone was obtained quantitatively by the oxidation of diphenylmethane(DPM) with nitric acid. 以w(HNO3)=68%25硝酸做氧化剂,NH4VO3做催化剂,在乙醚溶剂中氧化二苯甲烷得到定量的二苯甲酮(BP)。
- The synthetic methods of diphenylmethane dicarbamic acid esters(MDC ) were reviewed with 31 references. Methylating agent, catalysts that invovlved in the reaction of manufacting MDC were discussed . 综述了二苯甲烷二氨基甲酸酯的合成方法,讨论了合成二苯甲烷二氨基甲酸酯所涉及的甲基化试剂、催化剂。参考文献31篇。
- carbodiimide modified diphenylmethane diisocyanate 碳化二亚胺改性二苯基甲烷二异氰酸酯
- Keywords diphenylmethane diisocyanate;brine;extraction;simulation; 盐水;萃取;模拟;
- Keywords Diphenylmethane Diisocyanate;process;development;market; 二苯基甲烷二异氰酸酯;工艺;进展;市场;
- Keywords Co-MCM-41;catalytic oxidation;diphenylmethane;benzophenone; 介孔材料;催化氧化;二苯甲烷;二苯甲酮;
- Keywords diphenylmethane dicarbamic acid esters;methyl phenyl carbamic;diamino diphenylmethane;formaldehyde; 二苯甲烷二氨基甲酸酯;苯氨基甲酸甲酯;二氨基二苯甲烷;甲醛;
- Keywords clay;montmorillonite;zinc chloride;solid acid catalyst;benzene;benzyl chloride;benzylation;diphenylmethane; 粘土;蒙脱土;氯化锌;固体酸催化剂;苯;苄基氯;烷基化;二苯甲烷;
- Keywords benzhydryl chloride;diphenylmethane;photochemical reaction;pharmic intermediate; 二苯氯甲烷;二苯甲烷;光化学反应;医药中间体;
- Keywords diphenylmethane;phenetole;solid acid;catalytic liquefaction;direct liquefaction of coal; 二苯甲烷;苯乙醚;固体酸;催化液化;煤直接液化;
- Synthesis of 4,4' - Diphenylmethane Diisocyanate Bis(trichloromethly)Carbonate 夏敏, 二苯甲烷-4,4’-二异氰酸酯的非光气合成法
- Keywords microwave irradiation;hydrogen peroxide;green synthesis;diphenylmethane;benzophenone; 微波;过氧化氢;绿色合成;二苯甲烷;二苯甲酮;
- 4,4 - difluorobenzophenone was prepared from 4,4' - diamino - diphenylmethane by diazotization in fluoroboric acid solution and oxidation reaction. 采用4,4’-二氨基二苯甲烷为原料,经过重氮化反应、氧化反应合成4,4’-二氟二苯甲酮。
- Keywords wheat straw oxygen alkaline lignin;modifying;polyglycol;toluene diisocyanate;diphenylmethane diisocyanate;polyurethane; 麦草氧碱木素;改性;聚乙二醇;二异氰酸酯;聚氨酯;
- Keywords star-shaped polystyrene;atom transfer radical polymerization;charge transfer complex;diphenylmethane bismaleimide;styrene; 星状支化聚苯乙烯;原子转移自由基聚合;电荷转移络合物;二苯甲烷双马来酰亚胺;苯乙烯;