The effects of sulfonating agents on time of the sulfonation reaction was studied and the processing conditions were determined .
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Study on the sulfonation reaction of lignin from black liquor of alkali paper-making with bagasse
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The sulfonated polystyrene ( SPS ) has been prepared by sulfonation reaction of the polystyrene which is used as a filtrate reducer for oil well cement slurry .
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The target products were characterized by ' H-NMR 13C-NMR and MS. In addition a one-pot reaction was used in the two steps of sulfonation and nitration which reduced the amount of reagent reaction time and the loss of the intermediate product .
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Design and Art of Experiment Plant for SO 3 Sulfonation Reaction
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After extraction by sodium hydroxide chemical agent named A is used as sulphonating agent for increasing dispersion of nitro humic acid on cement in sulfonation reaction .
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Orthogonal tests are used in oxidative degradation reaction and sulfonation reaction for selecting optimum .
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Studies on the Sulfonation of Hypocrellins at the 13-Position and the Reaction Mechanism
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And when the temperature of sulfonation reaction was50 u2103 the sulfonation degree of products would be higher .
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Study of the sulfonation reaction between heptane and liquid sulphur trioxide
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Research Progress on Sulfonation Reaction Technology
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Sulfonation is an introduction to organic molecules sulfonic ( - SO2H ) of the reaction .
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The optimized conditions of sulfonation reaction of the heavy crude are : the concentration of sulfuric acid 55 % the amount of acid used 1.5 % reaction temperature 15 u2103 reaction time 2 h.
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By using lauric acid stearyl amine and PEG-500 as the starting materials a kind of asymmetric ampholytic dimeric surfactant NSG was synthesized through sulfonation esterification and ester interchange reaction .
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The sulfonated poly aryl ether ketone ketone ( S PEKK ) with various sulfonation degree was prepared by reaction of PEKK with sulfuric acid as sulfonating agent and solvent .
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3 % . In the sulfonation reaction they chose the best qualification : proportion additional method times temperature eg. By making a lots of tests get the gross product of taurine with the yeild of 76 .
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By sulfonation reaction active group of u2013 SO3 - can be introduced to chitosan molecule this offer the possibility of the following biomineralization .
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Application of Molecular Mechanics in study of the Sulfonation Reaction of Naphthalene Derivatives
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The sulfonation reaction on the H-type macroreticular adsorbent
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So it is proved that oxidative degradation reaction is necessary to increase the content of humic acid and sulfonation reaction can increase the cement paste divergence of humic acid .
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Different reagents were attempted for sulfonation reaction and the satisfied results were obtained by using fuming sulphuric acid as sulfonating reagent .
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An experiment plant for sulfonation reaction was designed in this paper . In accordance with the principle of sulfonation the dodecylbenzene was used as the material and SO 3 vaporized from 65 % fuming sulfuric acid as the sulfonating agent and the art conditions were studied also .
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An acid-proof high water-absorbing resin was prepared from acrylamide as monomer K_2S_2O_8 as initiator and N N ' - methylene-bis-acrylamide as crosslinking agent by aqueous solution polymerization and then by sulfonation reaction .
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The optimization of sulfonation reaction process of preparing penetrating agent T
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The Sulfonation Reaction Applied in Electroplating
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Synthesis study on dgla & to optimize the parameters of reduction reaction and sulfonation reaction
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The photo induced sulfonation of hypocrellins is very susceptible to the changes of reaction conditions such as the concentration of oxygen pH value of the solution and polarity of the solvent .
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The degree of sulfonation of SPEEK increases with the enhancement of the reaction temperature and time .
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By sulfonation and fasculation reaction sodium lignin sulfonate was modified as a dispersant ( GCL3S ) of coal water slurry ( CWS ) .
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The results showed that the degree of sulfonation increased with reaction temperature and amount of sulfonating agent increasing Tg and water absorption of SPS enhanced with increasing of sulfonation degree .
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