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您现在的位置:欢乐时时彩 > 资料 > carbonyl 的搜索结果 共有结果35,当前从第11条到第20条,本次搜索耗时0.1564086
 
Effect of carbonyl group on sorption and transport properties of gases in polymeric membranes
关键字:Effect,carbonyl,group,sorption,transport,properties,gases,polymeric,membranes,
The object of this work was to search for the relationships between the carbonyl group density and gas transport properties in the membrane. The intrinsic gas transport properties: permeation, diffusion, and sorption in a series&n...
http://www.stageastar.com/research/dis_info7429
 
POLY (DIALLYL DIMETHYL AMMONIUM CHLORIDE)SUPPORTED TRIBROMIDE, AS AN EFFICIENT REAGENT FOR ONE-POT α- BROMOACETALIZATION OF CARBONYL COMPOUNDS
关键字:POLY,DIALLYL,DIMETHYL,AMMONIUM,CHLORIDE,SUPPORTED,TRIBROMIDE,EFFICIENT,REAGENT,FOR,ONE,POT,BROMOACETALIZATION,CARBONYL,COMPOUNDS,
The practical significance of poly (diallyldimethylammonium chloride) has increased rapidly since many years.
http://www.stageastar.com/research/dis_info5699
 
POLY (DIALLYL DIMETHYL AMMONIUM CHLORIDE)SUPPORTED TRIBROMIDE, AS AN EFFICIENT REAGENT FOR ONE-POT α- BROMOACETALIZATION OF CARBONYL COMPOUNDS
关键字:POLY,DIALLYL,DIMETHYL,AMMONIUM,CHLORIDE,SUPPORTED,TRIBROMIDE,EFFICIENT,REAGENT,FOR,ONE,POT,BROMOACETALIZATION,CARBONYL,COMPOUNDS,
The practical significance of poly (diallyldimethylammonium chloride) has increased rapidly since many years.
http://www.stageastar.com/research/dis_info5699
 
Precise synthesis of sulfur-containing polymers via cooperative dual organocatalysts with high activity
关键字:Metal-free,carbonyl sulfide,100% alternating degree
Metal-free and controlled synthesis of sulfur-containing polymer is still a big challenge in polymer chemistry. Here, we report a metal-free, living copolymerization of carbonyl sulfide (COS) with epoxides via the cooperative catalysis of organic Lewis pairs including bases (e.g.: phosphazene, amidine, and guanidine) and thioureas as hydrogen-bond donors, afford welldefined poly(monothi...
http://www.stageastar.com/research/sy_info19593
 
An Examination of the Steric and Electronic Effects in the Copolymerization of Carbonyl Sulfide and Styrene Oxide
关键字:Carbonyl Sulfide, Copolymerization,Styrene Oxide
The completely alternating copolymerization of carbonyl sulfide (COS) and styrene oxide was found to occur under mild reaction conditions (0?30 °C and 1.5 MPa) in the presence of (salen)CrCl/onium salt catalyst systems to afford high molecular weight poly(monothiocarbonates) with narrow molecular weight distributions. Ring-opening of styrene oxide was shown to be 88% selective&nb...
http://www.stageastar.com/research/sy_info19383
 
Precise synthesis of sulfur-containing polymers via cooperative dual organocatalysts with high activity
关键字:Metal-free,carbonyl sulfide,100% alternating degree
Metal-free and controlled synthesis of sulfur-containing polymer is still a big challenge in polymer chemistry. Here, we report a metal-free, living copolymerization of carbonyl sulfide (COS) with epoxides via the cooperative catalysis of organic Lewis pairs including bases (e.g.: phosphazene, amidine, and guanidine) and thioureas as hydrogen-bond donors, afford welldefined poly(monothi...
http://www.stageastar.com/research/sy_info19593
 
An Examination of the Steric and Electronic Effects in the Copolymerization of Carbonyl Sulfide and Styrene Oxide
关键字:Carbonyl Sulfide, Copolymerization,Styrene Oxide
The completely alternating copolymerization of carbonyl sulfide (COS) and styrene oxide was found to occur under mild reaction conditions (0?30 °C and 1.5 MPa) in the presence of (salen)CrCl/onium salt catalyst systems to afford high molecular weight poly(monothiocarbonates) with narrow molecular weight distributions. Ring-opening of styrene oxide was shown to be 88% selective&nb...
http://www.stageastar.com/research/sy_info19383
 
Mechanistic Study of Regio-Defects in the Copolymerization of Propylene Oxide/Carbonyl Sulfide Catalyzed by (Salen)CrX Complexes
Small quantities of regio-defects in a regio-/stereoregular polymer weaken its tacticity and properties. This work clarified the origin of the regio-defect in the process of synthesizing poly(monothiocarbonate) through the copolymerization of propylene oxide (PO) and carbonyl sulfide (COS) catalyzed by a (salen)CrCl complex accompanied by bis(triphenylphosphoranylidene)ammonium chloride ([PPN]Cl...
http://www.stageastar.comt//ss/xhzhang/publicationsshow_14166.html
 
14. Phase structure and transition behavior of a liquid crystal 5-{[(4''-heptoxy-4-biphenylyl)oxy]carbonyl}-1-pentyne
The phase structures and transition behaviors of a novel liquid crystal compound containing biphenylyl mesogen, 5-{[(4V-heptoxy-4-biphenylyl) oxy]carbonyl}-1-pentyne (A3EVO7), have been investigated by differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and wide angle X-ray diffraction (WAXD).
http://www.stageastar.comt//ss/jianxingeng/publicationsshow_13905.html
 
8. Liquid Crystal Properties of a Mesogenic Polyacetylene, Poly(11-{[(4''''-heptoxy-4-biphenylyl)carbonyl]oxy}-1-undecyne)
The liquid crystalline properties of a mesogenic poly(1-alkyne) and the corresponding monomer were studied using transmission electron microscopy, X-ray diffraction, polarizing optical microscopy and differential scanning calorimetry.
http://www.stageastar.comt//ss/jianxingeng/publicationsshow_13899.html
 
 
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相关搜索:
OXYCARBONYLclass        aroxycarbonyltriazole        ALKOXYCARBONYLclass        OXYCARBONYL        AZIDOCARBONYL       
benzyloxycarbonylclass        thiocarbonylthio        benzyloxycarbonyl        ALKOXYCARBONYL        OXYCARBONYLclass=lfont5       
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