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- W2362199323 abstract "The polyurethane has attracted much more attentions for its various applications.In this study,the reaction kinetics of isophorone diisocyante(IPDI) and polypropylene glycol(PPG) with using organo-tin compounds as catalysts are investigated by chemical titration.The effects of reaction temperature,different catalysts on the reaction rate constant are studied.The experimental results show that the reaction obeys the second-order equation of step-growth polymerization.The rate constants of IPDI and PPG reaction in the presence of dibutyltin dilaurate(DBTDL) catalyst at 50~70℃ are 1.36×10-2~ 6.10×10-2 kg·mol-1·min-1 and are 9.24×10-4 ~4.91×10-3 kg·mol-1·min-1 in the presence of stannous octoate(StOc) catalyst.The activation energy obtained from the result are 69.12 kJ·mol-1and 76.98kJ·mol-1 for DBTDL catalyst and StOc catalyst,respectively.It is concluded that DBTDL catalyst is more suitable for polymerization of IPDI and PPG than that of StOc catalyst." @default.
- W2362199323 created "2016-06-24" @default.
- W2362199323 creator A5014839531 @default.
- W2362199323 date "2011-01-01" @default.
- W2362199323 modified "2023-09-23" @default.
- W2362199323 title "Study on the Polymerization Reaction Kinetics of IPDI/PPG" @default.
- W2362199323 hasPublicationYear "2011" @default.
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