france how much rubber auxiliary agent 6ppd
france how much rubber auxiliary agent 6ppd
france how much rubber auxiliary agent 6ppd
france how much rubber auxiliary agent 6ppd
france how much rubber auxiliary agent 6ppd
  • What is the content of 6PPD in rubber?
  • Typically, the content of 6-PPD in rubber materials ranges from 0.4% to 2% . During its production and use, 6-PPD can be transported to exposed surfaces and enter the environment. These antioxidants are highly reactive to ozone . 6-PPDQ is more stable than 6-PPD.
  • What are the effects of 6PPD & 6ppd-q in air and dust?
  • Evaluating different Impacts of 6PPD and 6PPD-Q in air and dust. The presence of 6PPD and 6PPD-Q contributes to inhalation hazards by releasing particulate matter and volatile organic compounds into the air. Inhalation of these pollutants poses risks to respiratory health and may lead to various respiratory issues upon exposure.
  • What is the difference between 6ppd-q and 6ppd-q?
  • 6PPD-Q exhibits greater stability compared to 6PPD. Hiki et al. (2021) demonstrated this by observing that, at room temperature, the half-life of 6PPD-Q was significantly longer at 33 h compared to 6PPD's half-life of 5 h. Additionally, when exposed to ozone, the unstable 6PPD transforms into the more stable 6PPD-Q.
  • Does 6ppdq occur during ozonation of 6qdi?
  • Consistent with prior findings, 6PPDQ (C 18 H 22 N 2 O 2) was one of the major TPs in 6PPD ozonation (∼1 to 19% yield). Notably, 6PPDQ was not observed during ozonation of 6QDI ( N - (1,3-dimethylbutyl)- N ′-phenyl- p -quinonediimine), indicating that 6PPDQ formation does not proceed through 6QDI or associated 6QDI TPs.