rubber antioxidants and their transformation products
- Classification:Chemical Auxiliary Agent
- Purity:95.9%
- Type:Anti-aging agent
- Appearance:Purple brown to dark brown granules or flakes
- Shelf life:2 Years
- Application:Plastic Auxiliary Agents
- Production Capacity:100 Metric Ton/Metric Tons per Month
- Package:25kg plastic woven bag
new evidence of rubber-derived quinones in water, air for sale,by investigating this phenomenon, we identified a highly toxic quinone transformation product of n-(1,3-dimethylbutyl)-n'-phenyl-p-phenylenediamine (6ppd), a globally ubiquitous tire rubber antioxidant.
phosphite antioxidants mainly include tris (nonylphenyl) phosphate (tnp), tris (1,2,2,6,6-pentamethylpiperidinyl) phosphite (gw-540), and tris (2,4-di-tert-butylphenyl) phosphite (irgafos168). gw-540 is widely used in tires blended with styrene butadiene rubber and polybutadiene rubber.
stage 1 alternatives analysis for 6ppd in tires
6ppd has been widely studied and used in tires as a highly effective antidegradant since the 1960’s. the recent concern regarding 6ppd in tires relates to a newly identified transformation product, 6ppd, and its potential impacts to certain salmonids.
recent progress in the rubber antioxidants Rubber Auxiliary Agent,separately, 4-(dimethyl-butyl amino)diphenylamine (6ppd), another widely used antioxidant in the rubber industry, a recent study reported that the 6ppd (or already converted 6ppd-quinone) released from the tires reacts to form 6ppd-quinone, which is toxic to coho salmon and causes mass coho salmon deaths in the u.s. pacific northwest [59].
rubber antioxidants and chemical 6ppd
phosphite antioxidants mainly include tris (nonylphenyl) phosphate (tnp), tris (1,2,2,6,6-pentamethylpiperidinyl) phosphite (gw-540), and tris (2,4-di-tert-butylphenyl) phosphite (irgafos168). gw-540 is widely used in tires blended with styrene butadiene rubber and polybutadiene rubber.
transformation products of tire rubber antioxidant 6ppd for sale,6ppd, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (tp), 6ppd-quinone (6ppd), during exposure to gas-phase ozone. important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of tps from 6ppd ozonation.
environmental occurrence and toxicity of 6ppd quinone, an
(6ppd) is a chemical added to tires to protect them from oxidative degradation. with good dispensability in sizing material and little effect on vulcanization, It can soften sizing material, so can be used for tires and other kinds of rubber products.
environmental fate of tire-rubber related pollutants 6ppd,To improve tire durability, the antioxidant n-(1,3-dimethylbutyl)-n-phenyl-p-phenylenediamine (6PPD) is used in rubber, but when exposed to oxidants such as ozone (O3), it is converted into toxic 6PPD quinone (6PPD-Q), causing ecological problems.
widely used good price rubber antioxidant ippd
substituted para -phenylenediamine (ppd) antioxidants have been extensively used to retard oxidative degradation of tire rubber and were found to pervade multiple environmental compartments. however, there is a paucity of research on the environmental occurrences of their transformation products.
p-phenylenediamines and p-phenylenediamine quinone,N-(1,3-dimethyl-buty)-N'-phenyl-P-Phenylenediamines (ppds) are widely used in the rubber industry to effectively prevent oxidation of rubber by ozone, inhibit aging of rubber, and improve product application performance and service life (cataldo, 2018, cataldo, 2019, cataldo et al., 2015).
- 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.
- Why are P-phenylenediamines added to tire rubber?
- Rubber-derived tire chemicals (RDCs) are an important source of environmental pollutants in urban cities owing to the increasing demand and global production of private cars. p-phenylenediamines (PPDs), a class of antioxidants, are added to tire rubber to prevent cracking and thermal oxidative degradation and to extend service life .
- Are PPD antioxidants effective in reducing tire wear?
- It is reported that PPD antioxidants have been largely applied in commercial vehicle tire formulations (1–4% by mass). (11,35) Fomba et al. found a larger contribution of tire wear to the atmosphere particulates at a traffic-dominated site (2.0–2.9%) compared to an urban background (1.7–2.1%).
- Are rubber antioxidants toxic?
- Recent advances in the toxicity issue of rubber antioxidant With the increasing popularity of automobiles, tire wear particles, generated from tire material during use on roads, would ultimately enter the eco-system, such as soil, aquatic environment, etc .
