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phosphonium n.【化學】磷(根)。

phosphoprotein

New developments of polycarboxylic acid derivative catalysts , ion exchange resin catalysts , macrocyclic chelating compound catalysts , quaternary phosphonium salt catalysts , heterogeneous hydrotalcite - type catalysts and other catalysts which to be used in ethylene oxide catalytic hydration , and the catalysts of synthesis method of ethylene glycol via preparation and reaction of ethylene carbonate are expounded 闡述了用于環氧乙烷催化水合反應中的多羧酸衍生物催化體系、離子交換樹脂催化體系、大環螯合物催化體系、季?鹽催化體系、多相水滑石型催化體系及其他催化體系近年來的研究進展;同時闡述了用于碳酸亞乙酯法合成乙二醇反應中的催化體系的新進展。

Manufacturer of phase transfer catalysts and organic quaternary ammonium compounds , located in india . other products include quaternary phosphonium compounds , pyridinium salts , and methylating and brominating agents -專業生產氟化苯甲酸系列醫藥中間體,如對氟苯甲酸間氟苯甲酸間溴苯甲酸2 -氯- 4 -氟苯甲酸2 -硝基- 4 -氟苯甲酸3 , 5 -二氟苯甲酸等。