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Thermal characteristics of lysine tri-isocyanate and its mixture with water

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Title: Thermal characteristics of lysine tri-isocyanate and its mixture with water
Authors: Li, Xin-Rui li@fri.go.jp, Koseki, Hiroshi1, Iwata, Yusaku1
Source: Journal of Hazardous Materials. Apr2007, Vol. 142 Issue 3, p647-652. 6p.
Subjects: Lysine, Isocyanates, Calorimetry, Effect of temperature on chemical kinetics, Chemical reactions, Carbon dioxide, Gas chromatography, Fourier transform infrared spectroscopy, Safety
Abstract: The thermal reactivity of lysine tri-isocyanate (LTI, 2-isocyanatoethyl-2,6-diisocyanato caproylate) and its mixture with 1% water was investigated after the occurrence of a runaway reaction at a plant. By using a sensitive thermal calorimeter, C80, and an adiabatic calorimeter, ARC, an onset reaction of LTI was observed at 70–100°C and it became vigorous at 175–200°C. The reaction is considered as co-polymerization at this stage, which causes a second decomposition reaction at 200°C if the heat generation is accumulated in the vessel. On the other hand, the presence of water can catalyze LTI at much lower onset temperature and lead to a moderate reaction at 50°C since carbamine is produced and in turn it induces decarbonization of the LTI molecule with significant release of CO2 gas which was detected by a gas chromatography and an FT-IR gas analyzer. [Copyright &y& Elsevier]
Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 24462200
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Thermal characteristics of lysine tri-isocyanate and its mixture with water
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  Data: <searchLink fieldCode="AR" term="%22Li%2C+Xin-Rui%22">Li, Xin-Rui</searchLink><i> li@fri.go.jp</i><br /><searchLink fieldCode="AR" term="%22Koseki%2C+Hiroshi%22">Koseki, Hiroshi</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Iwata%2C+Yusaku%22">Iwata, Yusaku</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Hazardous+Materials%22">Journal of Hazardous Materials</searchLink>. Apr2007, Vol. 142 Issue 3, p647-652. 6p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Lysine%22">Lysine</searchLink><br /><searchLink fieldCode="DE" term="%22Isocyanates%22">Isocyanates</searchLink><br /><searchLink fieldCode="DE" term="%22Calorimetry%22">Calorimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Effect+of+temperature+on+chemical+kinetics%22">Effect of temperature on chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+reactions%22">Chemical reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+chromatography%22">Gas chromatography</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+transform+infrared+spectroscopy%22">Fourier transform infrared spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Safety%22">Safety</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The thermal reactivity of lysine tri-isocyanate (LTI, 2-isocyanatoethyl-2,6-diisocyanato caproylate) and its mixture with 1% water was investigated after the occurrence of a runaway reaction at a plant. By using a sensitive thermal calorimeter, C80, and an adiabatic calorimeter, ARC, an onset reaction of LTI was observed at 70–100°C and it became vigorous at 175–200°C. The reaction is considered as co-polymerization at this stage, which causes a second decomposition reaction at 200°C if the heat generation is accumulated in the vessel. On the other hand, the presence of water can catalyze LTI at much lower onset temperature and lead to a moderate reaction at 50°C since carbamine is produced and in turn it induces decarbonization of the LTI molecule with significant release of CO2 gas which was detected by a gas chromatography and an FT-IR gas analyzer. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Hazardous Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=24462200
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jhazmat.2006.06.085
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 647
    Subjects:
      – SubjectFull: Lysine
        Type: general
      – SubjectFull: Isocyanates
        Type: general
      – SubjectFull: Calorimetry
        Type: general
      – SubjectFull: Effect of temperature on chemical kinetics
        Type: general
      – SubjectFull: Chemical reactions
        Type: general
      – SubjectFull: Carbon dioxide
        Type: general
      – SubjectFull: Gas chromatography
        Type: general
      – SubjectFull: Fourier transform infrared spectroscopy
        Type: general
      – SubjectFull: Safety
        Type: general
    Titles:
      – TitleFull: Thermal characteristics of lysine tri-isocyanate and its mixture with water
        Type: main
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          Name:
            NameFull: Li, Xin-Rui
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            NameFull: Koseki, Hiroshi
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            NameFull: Iwata, Yusaku
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            – D: 11
              M: 04
              Text: Apr2007
              Type: published
              Y: 2007
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              Value: 03043894
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              Value: 142
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            – TitleFull: Journal of Hazardous Materials
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