从氟代甲苯出发,以醋酸为溶剂,采用液相空气氧化法,在钴锰盐和1,1,2,2-四溴乙烷催化体系存在下,合成了氟代苯甲酸,采用升华方法进行精制。
Fluorobenzoic acids were prepared from fluorotoluenes through liquid phase air oxidation with acetic acid as solvent and Co~(2+)-Mn~(2+)-1, 1,2,2-tetrabromoethane as catalyst.
以液态聚硫橡胶、异氟尔酮二异氰酸酯和扩链剂3,6 -二甲硫基-2 ,5 -二甲苯胺为原料,合成了不同硬段质量分数的聚硫硫代聚脲。
A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.
以液态聚硫橡胶、异氟尔酮二异氰酸酯和扩链剂3,6 -二甲硫基-2 ,5 -二甲苯胺为原料,合成了不同硬段质量分数的聚硫硫代聚脲。
A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.
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