Two series of pour point depressants(PPD) for crude oils were synthesis. One was acrylic acid esters (C\-\{18\} and C\-\{18-30\})-maleic anhydride copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\}...Two series of pour point depressants(PPD) for crude oils were synthesis. One was acrylic acid esters (C\-\{18\} and C\-\{18-30\})-maleic anhydride copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\} amine. The other was a maileic anhydride-alpha-olefins copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\} amine. Adding 100ppm of PPD to Daqing crude oil combined with heat treating resulted a pour point depression of 19 to 22 ℃. When samples 100×10\+\{-6\} were added to Liaohe, Renqiu, Xinjiang, Daqing crude oil, results show that they have very good pour point depressing effects.展开更多
Diphenyl carbonate(DPC) as an important product was used for synthesizing polycarbonate instead of phosgene.To detect the reaction process and products,a gas chromatographic method for analyzing the(related) six compo...Diphenyl carbonate(DPC) as an important product was used for synthesizing polycarbonate instead of phosgene.To detect the reaction process and products,a gas chromatographic method for analyzing the(related) six compounds(methanol,DMC,anisole,MPC,phenol,DPC) during the transesterification of phenol with dimethyl carbonate(DMC) was first proposed and described.All the compounds mentioned above were well separated through a FFAP chromatographic capillary column.A good linear relationship between the(injection) amount versus peak area was observed with the correlation coefficients of 0.996 3,0.994 6,(0.996 9),0.998 1,0.977,0.996 1,and the detection limits of six related compounds were founded to be 0.114,0.171,0.041 0,0.080 4,0.051 9,0.075 8 g/L respectively.展开更多
文摘Two series of pour point depressants(PPD) for crude oils were synthesis. One was acrylic acid esters (C\-\{18\} and C\-\{18-30\})-maleic anhydride copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\} amine. The other was a maileic anhydride-alpha-olefins copolymer aminolysed by successively reacting with C\-\{18\}-C\-\{30\} amine. Adding 100ppm of PPD to Daqing crude oil combined with heat treating resulted a pour point depression of 19 to 22 ℃. When samples 100×10\+\{-6\} were added to Liaohe, Renqiu, Xinjiang, Daqing crude oil, results show that they have very good pour point depressing effects.
文摘Diphenyl carbonate(DPC) as an important product was used for synthesizing polycarbonate instead of phosgene.To detect the reaction process and products,a gas chromatographic method for analyzing the(related) six compounds(methanol,DMC,anisole,MPC,phenol,DPC) during the transesterification of phenol with dimethyl carbonate(DMC) was first proposed and described.All the compounds mentioned above were well separated through a FFAP chromatographic capillary column.A good linear relationship between the(injection) amount versus peak area was observed with the correlation coefficients of 0.996 3,0.994 6,(0.996 9),0.998 1,0.977,0.996 1,and the detection limits of six related compounds were founded to be 0.114,0.171,0.041 0,0.080 4,0.051 9,0.075 8 g/L respectively.
