The catalytic hydrogenation of palladium chelating resins containing chiralamino acid ligands based on lower crosslinked poly(chloroethyl acrylate ) and someeffects on the rate of hydrogenation were studied.Lot of che...The catalytic hydrogenation of palladium chelating resins containing chiralamino acid ligands based on lower crosslinked poly(chloroethyl acrylate ) and someeffects on the rate of hydrogenation were studied.Lot of chelating resins bearing different ligands have good properties of ion exchange and absorption. Additionally,their metal chelates have the properties ofresolution of optically active racemes and catalysis etc. The connotation are veryprofound.展开更多
The A-B block copolymer of β-chloroethyl glycidyl ether with styrene can be got by the easy method of one-step polymerization. The structure of A-B block copolymer was confirmed by the elementary analysis, turbidity ...The A-B block copolymer of β-chloroethyl glycidyl ether with styrene can be got by the easy method of one-step polymerization. The structure of A-B block copolymer was confirmed by the elementary analysis, turbidity titration, molecular weight measurement, IR-spectra, 13C-NMR, 1H-NMR and DTA investigation of the products. Also , the effects of solvents, reaction time and temperature on the composition, and yield of copolymer have been studied.展开更多
The polymerization of MMA initiated by copper(Ⅱ） chelating resins/CCl4 system was studied.From the kinetic data,the kinetic equation of polymerization can be expressed as Rp=Ke^-56400/RT[MMA]^1.57[CCl4]^m[RESIN-Cu]^...The polymerization of MMA initiated by copper(Ⅱ） chelating resins/CCl4 system was studied.From the kinetic data,the kinetic equation of polymerization can be expressed as Rp=Ke^-56400/RT[MMA]^1.57[CCl4]^m[RESIN-Cu]^0.18 where m:3-4.5,when[CCl4] 0.1-6.93M.The free radical polymerization mechanism is proposed.The primary radicals are formed by the process of complexation-chlorine transformation among the copper(Ⅱ) chelating resin,CCl4 and methacrylate.展开更多
文摘The catalytic hydrogenation of palladium chelating resins containing chiralamino acid ligands based on lower crosslinked poly(chloroethyl acrylate ) and someeffects on the rate of hydrogenation were studied.Lot of chelating resins bearing different ligands have good properties of ion exchange and absorption. Additionally,their metal chelates have the properties ofresolution of optically active racemes and catalysis etc. The connotation are veryprofound.
文摘The A-B block copolymer of β-chloroethyl glycidyl ether with styrene can be got by the easy method of one-step polymerization. The structure of A-B block copolymer was confirmed by the elementary analysis, turbidity titration, molecular weight measurement, IR-spectra, 13C-NMR, 1H-NMR and DTA investigation of the products. Also , the effects of solvents, reaction time and temperature on the composition, and yield of copolymer have been studied.
文摘The polymerization of MMA initiated by copper(Ⅱ） chelating resins/CCl4 system was studied.From the kinetic data,the kinetic equation of polymerization can be expressed as Rp=Ke^-56400/RT[MMA]^1.57[CCl4]^m[RESIN-Cu]^0.18 where m:3-4.5,when[CCl4] 0.1-6.93M.The free radical polymerization mechanism is proposed.The primary radicals are formed by the process of complexation-chlorine transformation among the copper(Ⅱ) chelating resin,CCl4 and methacrylate.
