6ppd rubber antioxidant: characteristics, applications, combinations
- Classification:Chemical Auxiliary Agent
- Purity:96.9%
- Type:Rubber additive antioxidant
- Appearance:Amber to Brown Flake
- Quality:Technical
- Application:Used in Tires,Industrial Rubber Products
- Production Capacity:3000 Ton/Year
- Package:25kg/drum
transformation products of tire rubber antioxidant 6ppd in,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. to address these data gaps, gas-phase ozonation of 6ppd was.
6ppd (6ppd or n-(1,3-dimethylbutyl)-n'-phenyl-p-phenylenediamine) is a widely used rubber antioxidant that plays a vital role in the production of rubber products. this article aims to provide an overview of 6ppd, its characteristics, its applications in rubber product manufacturing, potential product combinations, and important considerations for commercial procurement. 1. what is 6ppd? 6ppd.
rubber antioxidant 6ppd for tyre, belt
product name: rubber antioxidant 6ppd cas no.: 793-24-8 mf: c18h24n2 einecs no.: 212-344-0 appearance: dark purple granular.experience our prompt service, reliable delivery, and personalized support, ensuring your needs are met with utmost.
screening p-phenylenediamine antioxidants, their transformation,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. here, we analyzed tire wear particles (twps), recycled rubber doormats, and turf-field crumb rubbers.
transformation products of tire rubber antioxidant 6ppd price
antioxidant at 0.4−2% by weight,33 where it is designed to quickly react with ground-level o 3 to protect rubber elastomers.34,35 such reactions inevitably form other trans-formation products (tps) beyond 6ppdq during the tire rubber lifetime.21,34 for example
(pdf) study on use of lignin based antioxidant in a.researchgate,when kl was combined with 6ppd and skf, each antioxidant was varied from 0 to 2 phr at 0.5 phr.flex-cracking of vulcanizates with kl was 2-5 times faster than those with other antioxidants.
transformation products of tire rubber antioxidant 6ppd price
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. to address these data gaps, gas-phase ozonation of 6ppd was.
sunlight-induced transformation of tire rubber antioxidant n-(1,3,the huge consumption of the tire rubber antioxidant n-(1,3-dimethylbutyl)-n′-phenyl-p-phenylenediamine (6ppd) has resulted in pervasive contamination in aquatic environments. more importantly, the transformation product of 6ppd, i.e., 6ppd-quinone (6ppd-q), is raising increasing concerns due to its high toxicity to aquatic organisms. however, whether and how 6ppd-q can be formed from 6ppd in.
occurrence of p-phenylenediamine antioxidants in human urine
compared with other synthetic phenolic antioxidants, the urinary concentration of 6ppd in this study is much lower than that of 2,4-di-tert-butylphenol (mean 18 ng/ml) in human urine from america (liu and mabury, 2019), but comparable to that of butylated).
first insights into 6ppd-quinone formation from 6ppd photodegradation,p-phenylenediamines (ppds), an important type of rubber antioxidants, have received little study on their environmental fate, particularly for their vital photodegradation process in water environment.accordingly, n-(1,3-dimethylbutyl)-n′-phenyl-1,4-phenylenediamine (6ppd), as a representative of ppds, was investigated experimentally and theoretically for its photodegradation in water.
- 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.
- Is 6PPD a good metabolite?
- Metabolism of PPDs in the human body remains unclear (Zhu et al., 2024). Studies on mice showed that after oral gavage, 6PPD concentrations in mice urine were > 10 times higher than its quinone metabolite (6PPDQ) (Zhao et al., 2023b), indicating the low biotransformation efficiency of 6PPD.
- Can 6PPD be recycled?
- We demonstrate the catalytic upgrade of 6PPD to safe chemicals and the valorization of crumb rubber to aromatics and carbon black using microwave-assisted pyrolysis. Upcycling end-of-life tire waste is complex due to the recalcitrant nature of the toxic legacy additive, 6PPD.
- 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.
