25kg/bag abuja rubber antioxidant 6ppd for tyre/shoes
25kg/bag abuja rubber antioxidant 6ppd for tyre/shoes
25kg/bag abuja rubber antioxidant 6ppd for tyre/shoes
25kg/bag abuja rubber antioxidant 6ppd for tyre/shoes
25kg/bag abuja rubber antioxidant 6ppd for tyre/shoes
  • Are p phenylenediamine (PPD) antioxidants in recycled tire rubber products toxic?
  • Recently, roadway releases of N, N ′-substituted p -phenylenediamine (PPD) antioxidants and their transformation products (TPs) received significant attention due to the highly toxic 6PPD-quinone. However, the occurrence of PPDs and TPs in recycled tire rubber products remains uncharacterized.
  • What solvent is used to remove 6PPD from EOL tires?
  • Through batch extraction analysis and computational calculations, acetone is the best suited solvent for 6PPD removal from EOL tires of those tested. Furthermore, the batch extraction kinetics follow a first-order profile.
  • Does acetone remove 6PPD from waste rubber?
  • A parity plot of the measured extraction efficiency versus the calculated 6PPD solubility (Fig. 2e) corroborates that solubility is a crucial determinant of the solvent’s ability to remove 6PPD from waste rubber and confirms that acetone is one of the best solvents while being inexpensive and non-toxic.
  • Which industrial rubber additives have higher chemical concentrations?
  • Furthermore, we quantified 15 other industrial rubber additives (including bonding agents, vulcanization accelerators, benzotriazole and benzothiazole derivatives, and diphenylamine antioxidants), observing that PPD-derived chemical concentrations were 0.5–6 times higher than these often-studied additives.