good price malaysia chemicals rubber antioxidant 6ppd
good price malaysia chemicals rubber antioxidant 6ppd
good price malaysia chemicals rubber antioxidant 6ppd
good price malaysia chemicals rubber antioxidant 6ppd
good price malaysia chemicals rubber antioxidant 6ppd
  • Does 6PPD ozonation pose environmental risks?
  • 6PPD, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (TP), 6PPD-quinone (6PPDQ), during exposure to gas-phase ozone. Important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of TPs from 6PPD ozonation.
  • Are substituted P-phenylenediamines effective antioxidants?
  • The substituted p-phenylenediamines (PPDs) represent a suite of effective antioxidants broadly applied in rubber industries. However, knowledge of their environmental occurrences and fate remains e...
  • Do PPD antioxidants exist in dust particles?
  • However, knowledge of their environmental occurrences and fate remains extremely limited. Herein, we explored the occurrence of six major PPD antioxidants and one newly defined transformation product in dust particles from different environments, including roads, underground parking lots, vehicles, and houses.
  • Is 6PPD recalcitrant under harsh pyrolysis?
  • This demonstrates the recalcitrant nature of 6PPD under harsh pyrolysis conditions and suggests solvent extraction is necessary for its removal. The TGA curve (Supplementary Fig. 11) of 6PPD shows a maximum degradation at ~300 °C and suggests that some 6PPD in the tires may sublime into the liquid product before the rubber degrades.

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